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Windows Analysis Report
J4o8OaYTEF.dll

Overview

General Information

Sample name:	J4o8OaYTEF.dll (renamed file extension from exe to dll, renamed because original name is a hash value)
Original sample name:	66a1616bf55914961e9e6512633310dc823a19d601f5ec1daf3a561031f6425c.exe
Analysis ID:	1542741
MD5:	7e4e55e9929a9ec7dbd924b916c5c549
SHA1:	b78ffcba1a36d4262be8b6d9270bb4d42ff3c0a1
SHA256:	66a1616bf55914961e9e6512633310dc823a19d601f5ec1daf3a561031f6425c
Tags:	20-25-126-96exeuser-JAMESWT_MHT
Infos:

Detection

CobaltStrike, Metasploit

Score:	92
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Found malware configuration

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected CobaltStrike

Yara detected Metasploit Payload

AI detected suspicious sample

C2 URLs / IPs found in malware configuration

Found direct / indirect Syscall (likely to bypass EDR)

Checks if the current process is being debugged

Creates a process in suspended mode (likely to inject code)

Detected potential crypto function

May sleep (evasive loops) to hinder dynamic analysis

PE file contains more sections than normal

PE file contains sections with non-standard names

Program does not show much activity (idle)

Registers a DLL

Sample execution stops while process was sleeping (likely an evasion)

Uses code obfuscation techniques (call, push, ret)

Yara signature match

Classification

Process Tree

System is w10x64

loaddll64.exe (PID: 6632 cmdline: loaddll64.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll" MD5: 763455F9DCB24DFEECC2B9D9F8D46D52)

conhost.exe (PID: 6488 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 0D698AF330FD17BEE3BF90011D49251D)

cmd.exe (PID: 5192 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll",#1 MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE)

rundll32.exe (PID: 4300 cmdline: rundll32.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll",#1 MD5: EF3179D498793BF4234F708D3BE28633)

regsvr32.exe (PID: 3032 cmdline: regsvr32.exe /s C:\Users\user\Desktop\J4o8OaYTEF.dll MD5: B0C2FA35D14A9FAD919E99D9D75E1B9E)

rundll32.exe (PID: 5904 cmdline: rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllGetClassObject MD5: EF3179D498793BF4234F708D3BE28633)

rundll32.exe (PID: 5648 cmdline: rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllMain MD5: EF3179D498793BF4234F708D3BE28633)

rundll32.exe (PID: 2252 cmdline: rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllRegisterServer MD5: EF3179D498793BF4234F708D3BE28633)

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
Cobalt Strike, CobaltStrike	Cobalt Strike is a paid penetration testing product that allows an attacker to deploy an agent named 'Beacon' on the victim machine. Beacon includes a wealth of functionality to the attacker, including, but not limited to command execution, key logging, file transfer, SOCKS proxying, privilege escalation, mimikatz, port scanning and lateral movement. Beacon is in-memory/file-less, in that it consists of stageless or multi-stage shellcode that once loaded by exploiting a vulnerability or executing a shellcode loader, will reflectively load itself into the memory of a process without touching the disk. It supports C2 and staging over HTTP, HTTPS, DNS, SMB named pipes as well as forward and reverse TCP; Beacons can be daisy-chained. Cobalt Strike comes with a toolkit for developing shellcode loaders, called Artifact Kit.The Beacon implant has become popular amongst targeted attackers and criminal users as it is well written, stable, and highly customizable.	APT 29 APT32 APT41 AQUATIC PANDA Anunak Cobalt Codoso CopyKittens DarkHydrus Earth Baxia FIN6 FIN7 Leviathan Mustang Panda Shell Crew Stone Panda TianWu UNC1878 UNC2452 Winnti Umbrella	http://blog.morphisec.com/new-global-attack-on-point-of-sale-systems http://blog.nsfocus.net/murenshark http://stillu.cc/assets/slides/2023-08-Unmasking%20CamoFei.pdf http://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/bluebottle-banks-targeted-africa http://www.secureworks.com/research/threat-profiles/gold-drake	https://malpedia.caad.fkie.fraunhofer.de/details/win.cobalt_strike

Malware Configuration

Threatname: CobaltStrike

{"C2Server": "http://20.25.126.96:443/whI5", "User Agent": "User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; BOIE9;ENUS)\r\n"}

Threatname: Metasploit

{"Headers": "User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; BOIE9;ENUS)\r\n", "Type": "Metasploit Download", "URL": "http://20.25.126.96/whI5"}

Yara Signatures

Memory Dumps

Source	Rule	Description	Author	Strings
00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp	JoeSecurity_MetasploitPayload_3	Yara detected Metasploit Payload	Joe Security
00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp	JoeSecurity_CobaltStrike_3	Yara detected CobaltStrike	Joe Security
00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp	Windows_Trojan_Metasploit_7bc0f998	Identifies the API address lookup function leverage by metasploit shellcode	unknown	0x11:$a1: 48 31 D2 65 48 8B 52 60 48 8B 52 18 48 8B 52 20 48 8B 72 50 48 0F B7 4A 4A 4D 31 C9 48 31 C0 AC 3C 61
00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp	Windows_Trojan_Metasploit_c9773203	Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families.	unknown	0x7d:$a: 48 31 C0 AC 41 C1 C9 0D 41 01 C1 38 E0 75 F1 4C 03 4C 24 08 45 39 D1
00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp	JoeSecurity_MetasploitPayload_3	Yara detected Metasploit Payload	Joe Security
00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp	JoeSecurity_CobaltStrike_3	Yara detected CobaltStrike	Joe Security
00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp	Windows_Trojan_Metasploit_7bc0f998	Identifies the API address lookup function leverage by metasploit shellcode	unknown	0x11:$a1: 48 31 D2 65 48 8B 52 60 48 8B 52 18 48 8B 52 20 48 8B 72 50 48 0F B7 4A 4A 4D 31 C9 48 31 C0 AC 3C 61
00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp	Windows_Trojan_Metasploit_c9773203	Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families.	unknown	0x7d:$a: 48 31 C0 AC 41 C1 C9 0D 41 01 C1 38 E0 75 F1 4C 03 4C 24 08 45 39 D1
00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp	JoeSecurity_MetasploitPayload_3	Yara detected Metasploit Payload	Joe Security
00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp	JoeSecurity_CobaltStrike_3	Yara detected CobaltStrike	Joe Security
00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp	Windows_Trojan_Metasploit_7bc0f998	Identifies the API address lookup function leverage by metasploit shellcode	unknown	0x11:$a1: 48 31 D2 65 48 8B 52 60 48 8B 52 18 48 8B 52 20 48 8B 72 50 48 0F B7 4A 4A 4D 31 C9 48 31 C0 AC 3C 61
00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp	Windows_Trojan_Metasploit_c9773203	Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families.	unknown	0x7d:$a: 48 31 C0 AC 41 C1 C9 0D 41 01 C1 38 E0 75 F1 4C 03 4C 24 08 45 39 D1
00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp	JoeSecurity_MetasploitPayload_3	Yara detected Metasploit Payload	Joe Security
00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp	JoeSecurity_CobaltStrike_3	Yara detected CobaltStrike	Joe Security
00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp	Windows_Trojan_Metasploit_7bc0f998	Identifies the API address lookup function leverage by metasploit shellcode	unknown	0x11:$a1: 48 31 D2 65 48 8B 52 60 48 8B 52 18 48 8B 52 20 48 8B 72 50 48 0F B7 4A 4A 4D 31 C9 48 31 C0 AC 3C 61
00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp	Windows_Trojan_Metasploit_c9773203	Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families.	unknown	0x7d:$a: 48 31 C0 AC 41 C1 C9 0D 41 01 C1 38 E0 75 F1 4C 03 4C 24 08 45 39 D1
00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp	JoeSecurity_MetasploitPayload_3	Yara detected Metasploit Payload	Joe Security
00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp	JoeSecurity_CobaltStrike_3	Yara detected CobaltStrike	Joe Security
00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp	Windows_Trojan_Metasploit_7bc0f998	Identifies the API address lookup function leverage by metasploit shellcode	unknown	0x11:$a1: 48 31 D2 65 48 8B 52 60 48 8B 52 18 48 8B 52 20 48 8B 72 50 48 0F B7 4A 4A 4D 31 C9 48 31 C0 AC 3C 61
00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp	Windows_Trojan_Metasploit_c9773203	Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families.	unknown	0x7d:$a: 48 31 C0 AC 41 C1 C9 0D 41 01 C1 38 E0 75 F1 4C 03 4C 24 08 45 39 D1
Click to see the 15 entries

Sigma Signatures

⊘No Sigma rule has matched

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Found malware configuration

Source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp	Malware Configuration Extractor: CobaltStrike {"C2Server": "http://20.25.126.96:443/whI5", "User Agent": "User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; BOIE9;ENUS)\r\n"}
Source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp	Malware Configuration Extractor: Metasploit {"Headers": "User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; BOIE9;ENUS)\r\n", "Type": "Metasploit Download", "URL": "http://20.25.126.96/whI5"}

Multi AV Scanner detection for submitted file

Source: J4o8OaYTEF.dll

ReversingLabs: Detection: 55%

AI detected suspicious sample

Source: Submited Sample

Integrated Neural Analysis Model: Matched 99.2% probability

Source: J4o8OaYTEF.dll

Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT

Networking

C2 URLs / IPs found in malware configuration

Source: Malware configuration extractor	URLs: http://20.25.126.96:443/whI5
Source: Malware configuration extractor	URLs: http://20.25.126.96/whI5

System Summary

Malicious sample detected (through community Yara rule)

Source: 00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Identifies the API address lookup function leverage by metasploit shellcode Author: unknown
Source: 00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families. Author: unknown
Source: 00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Identifies the API address lookup function leverage by metasploit shellcode Author: unknown
Source: 00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families. Author: unknown
Source: 00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Identifies the API address lookup function leverage by metasploit shellcode Author: unknown
Source: 00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families. Author: unknown
Source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Identifies the API address lookup function leverage by metasploit shellcode Author: unknown
Source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families. Author: unknown
Source: 00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Identifies the API address lookup function leverage by metasploit shellcode Author: unknown
Source: 00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families. Author: unknown

Source: C:\Windows\System32\loaddll64.exe	Code function: 0_2_000002093EAE010C	0_2_000002093EAE010C
Source: C:\Windows\System32\rundll32.exe	Code function: 4_2_000002004A24010C	4_2_000002004A24010C
Source: C:\Windows\System32\rundll32.exe	Code function: 5_2_0000024745F8010C	5_2_0000024745F8010C
Source: C:\Windows\System32\rundll32.exe	Code function: 7_2_000001B58F98010C	7_2_000001B58F98010C
Source: C:\Windows\System32\rundll32.exe	Code function: 8_2_000001B9F252010C	8_2_000001B9F252010C

Source: J4o8OaYTEF.dll

Static PE information: Number of sections : 11 > 10

Source: 00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Windows_Trojan_Metasploit_7bc0f998 os = windows, severity = x86, description = Identifies the API address lookup function leverage by metasploit shellcode, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = fdb5c665503f07b2fc1ed7e4e688295e1222a500bfb68418661db60c8e75e835, id = 7bc0f998-7014-4883-8a56-d5ee00c15aed, last_modified = 2021-08-23
Source: 00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Windows_Trojan_Metasploit_c9773203 os = windows, severity = x86, description = Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., creation_date = 2021-04-07, scan_context = file, memory, reference = https://github.com/rapid7/metasploit-framework/blob/04e8752b9b74cbaad7cb0ea6129c90e3172580a2/external/source/shellcode/windows/x64/src/block/block_api.asm, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = afde93eeb14b4d0c182f475a22430f101394938868741ffa06445e478b6ece36, id = c9773203-6d1e-4246-a1e0-314217e0207a, last_modified = 2021-08-23
Source: 00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Windows_Trojan_Metasploit_7bc0f998 os = windows, severity = x86, description = Identifies the API address lookup function leverage by metasploit shellcode, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = fdb5c665503f07b2fc1ed7e4e688295e1222a500bfb68418661db60c8e75e835, id = 7bc0f998-7014-4883-8a56-d5ee00c15aed, last_modified = 2021-08-23
Source: 00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Windows_Trojan_Metasploit_c9773203 os = windows, severity = x86, description = Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., creation_date = 2021-04-07, scan_context = file, memory, reference = https://github.com/rapid7/metasploit-framework/blob/04e8752b9b74cbaad7cb0ea6129c90e3172580a2/external/source/shellcode/windows/x64/src/block/block_api.asm, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = afde93eeb14b4d0c182f475a22430f101394938868741ffa06445e478b6ece36, id = c9773203-6d1e-4246-a1e0-314217e0207a, last_modified = 2021-08-23
Source: 00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Windows_Trojan_Metasploit_7bc0f998 os = windows, severity = x86, description = Identifies the API address lookup function leverage by metasploit shellcode, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = fdb5c665503f07b2fc1ed7e4e688295e1222a500bfb68418661db60c8e75e835, id = 7bc0f998-7014-4883-8a56-d5ee00c15aed, last_modified = 2021-08-23
Source: 00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Windows_Trojan_Metasploit_c9773203 os = windows, severity = x86, description = Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., creation_date = 2021-04-07, scan_context = file, memory, reference = https://github.com/rapid7/metasploit-framework/blob/04e8752b9b74cbaad7cb0ea6129c90e3172580a2/external/source/shellcode/windows/x64/src/block/block_api.asm, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = afde93eeb14b4d0c182f475a22430f101394938868741ffa06445e478b6ece36, id = c9773203-6d1e-4246-a1e0-314217e0207a, last_modified = 2021-08-23
Source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Windows_Trojan_Metasploit_7bc0f998 os = windows, severity = x86, description = Identifies the API address lookup function leverage by metasploit shellcode, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = fdb5c665503f07b2fc1ed7e4e688295e1222a500bfb68418661db60c8e75e835, id = 7bc0f998-7014-4883-8a56-d5ee00c15aed, last_modified = 2021-08-23
Source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Windows_Trojan_Metasploit_c9773203 os = windows, severity = x86, description = Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., creation_date = 2021-04-07, scan_context = file, memory, reference = https://github.com/rapid7/metasploit-framework/blob/04e8752b9b74cbaad7cb0ea6129c90e3172580a2/external/source/shellcode/windows/x64/src/block/block_api.asm, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = afde93eeb14b4d0c182f475a22430f101394938868741ffa06445e478b6ece36, id = c9773203-6d1e-4246-a1e0-314217e0207a, last_modified = 2021-08-23
Source: 00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Windows_Trojan_Metasploit_7bc0f998 os = windows, severity = x86, description = Identifies the API address lookup function leverage by metasploit shellcode, creation_date = 2021-03-23, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = fdb5c665503f07b2fc1ed7e4e688295e1222a500bfb68418661db60c8e75e835, id = 7bc0f998-7014-4883-8a56-d5ee00c15aed, last_modified = 2021-08-23
Source: 00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY	Matched rule: Windows_Trojan_Metasploit_c9773203 os = windows, severity = x86, description = Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., creation_date = 2021-04-07, scan_context = file, memory, reference = https://github.com/rapid7/metasploit-framework/blob/04e8752b9b74cbaad7cb0ea6129c90e3172580a2/external/source/shellcode/windows/x64/src/block/block_api.asm, license = Elastic License v2, threat_name = Windows.Trojan.Metasploit, fingerprint = afde93eeb14b4d0c182f475a22430f101394938868741ffa06445e478b6ece36, id = c9773203-6d1e-4246-a1e0-314217e0207a, last_modified = 2021-08-23

Source: classification engine

Classification label: mal92.troj.evad.winDLL@14/0@0/0

Source: C:\Windows\System32\conhost.exe

Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:6488:120:WilError_03

Source: J4o8OaYTEF.dll

Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ

Source: C:\Windows\System32\loaddll64.exe

Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers

Jump to behavior

Source: C:\Windows\System32\cmd.exe

Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll",#1

Source: J4o8OaYTEF.dll

ReversingLabs: Detection: 55%

Source: unknown	Process created: C:\Windows\System32\loaddll64.exe loaddll64.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll"
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll",#1
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe /s C:\Users\user\Desktop\J4o8OaYTEF.dll
Source: C:\Windows\System32\cmd.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll",#1
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllGetClassObject
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllMain
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllRegisterServer
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll",#1	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe /s C:\Users\user\Desktop\J4o8OaYTEF.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllGetClassObject	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllMain	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllRegisterServer	Jump to behavior
Source: C:\Windows\System32\cmd.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll",#1	Jump to behavior

Source: C:\Windows\System32\loaddll64.exe	Section loaded: apphelp.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: wininet.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: iertutil.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: sspicli.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: windows.storage.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: wldp.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: profapi.dll	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Section loaded: kernel.appcore.dll	Jump to behavior
Source: C:\Windows\System32\regsvr32.exe	Section loaded: apphelp.dll	Jump to behavior
Source: C:\Windows\System32\regsvr32.exe	Section loaded: aclayers.dll	Jump to behavior
Source: C:\Windows\System32\regsvr32.exe	Section loaded: sfc.dll	Jump to behavior
Source: C:\Windows\System32\regsvr32.exe	Section loaded: sfc_os.dll	Jump to behavior
Source: C:\Windows\System32\regsvr32.exe	Section loaded: kernel.appcore.dll	Jump to behavior
Source: C:\Windows\System32\regsvr32.exe	Section loaded: uxtheme.dll	Jump to behavior

Source: C:\Windows\System32\loaddll64.exe

Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{0358b920-0ac7-461f-98f4-58e32cd89148}\InProcServer32

Jump to behavior

Source: J4o8OaYTEF.dll

Static PE information: Image base 0x2fbac0000 > 0x60000000

Source: J4o8OaYTEF.dll

Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT

Source: J4o8OaYTEF.dll

Static PE information: section name: .xdata

Source: C:\Windows\System32\loaddll64.exe

Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe /s C:\Users\user\Desktop\J4o8OaYTEF.dll

Source: C:\Windows\System32\loaddll64.exe	Code function: 0_2_000002093EAE012B push eax; ret	0_2_000002093EAE0387
Source: C:\Windows\System32\loaddll64.exe	Code function: 0_2_000002093EAE010C push eax; ret	0_2_000002093EAE0387
Source: C:\Windows\System32\rundll32.exe	Code function: 4_2_000002004A24010C push eax; ret	4_2_000002004A240387
Source: C:\Windows\System32\rundll32.exe	Code function: 4_2_000002004A24012B push eax; ret	4_2_000002004A240387
Source: C:\Windows\System32\rundll32.exe	Code function: 5_2_0000024745F8012B push eax; ret	5_2_0000024745F80387
Source: C:\Windows\System32\rundll32.exe	Code function: 5_2_0000024745F8010C push eax; ret	5_2_0000024745F80387
Source: C:\Windows\System32\rundll32.exe	Code function: 7_2_000001B58F98012B push eax; ret	7_2_000001B58F980387
Source: C:\Windows\System32\rundll32.exe	Code function: 7_2_000001B58F98010C push eax; ret	7_2_000001B58F980387
Source: C:\Windows\System32\rundll32.exe	Code function: 8_2_000001B9F252012B push eax; ret	8_2_000001B9F2520387
Source: C:\Windows\System32\rundll32.exe	Code function: 8_2_000001B9F252010C push eax; ret	8_2_000001B9F2520387

Source: C:\Windows\System32\rundll32.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Windows\System32\rundll32.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Windows\System32\rundll32.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior
Source: C:\Windows\System32\rundll32.exe	Process information set: NOOPENFILEERRORBOX	Jump to behavior

Source: C:\Windows\System32\loaddll64.exe TID: 6112

Thread sleep time: -120000s >= -30000s

Jump to behavior

Source: all processes

Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected

Source: C:\Windows\System32\conhost.exe

Last function: Thread delayed

Source: C:\Windows\System32\loaddll64.exe

Thread delayed: delay time: 120000

Jump to behavior

Source: C:\Windows\System32\regsvr32.exe

Process queried: DebugPort

Jump to behavior

Source: all processes

Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected

HIPS / PFW / Operating System Protection Evasion

Found direct / indirect Syscall (likely to bypass EDR)

Source: C:\Windows\System32\loaddll64.exe	NtCreateThreadEx: Indirect: 0x7FFBC3131492	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	NtMapViewOfSection: Indirect: 0x7FFBC31319E4	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	NtProtectVirtualMemory: Indirect: 0x7FFBC3131449	Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	NtCreateThreadEx: Indirect: 0x7FFBC3132701	Jump to behavior

Source: C:\Windows\System32\cmd.exe

Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll",#1

Jump to behavior

Remote Access Functionality

Yara detected CobaltStrike

Source: Yara match	File source: 00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match	File source: 00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match	File source: 00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match	File source: 00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY

Yara detected Metasploit Payload

Source: Yara match	File source: 00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match	File source: 00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match	File source: 00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match	File source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match	File source: 00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp, type: MEMORY

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	1 DLL Side-Loading	11 Process Injection	1 Regsvr32	OS Credential Dumping	1 Security Software Discovery	Remote Services	1 Archive Collected Data	1 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	1 Abuse Elevation Control Mechanism	1 Rundll32	LSASS Memory	21 Virtualization/Sandbox Evasion	Remote Desktop Protocol	Data from Removable Media	1 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	1 DLL Side-Loading	21 Virtualization/Sandbox Evasion	Security Account Manager	1 System Information Discovery	SMB/Windows Admin Shares	Data from Network Shared Drive	Steganography	Automated Exfiltration	Data Encrypted for Impact
Employee Names	Virtual Private Server	Local Accounts	Cron	Login Hook	Login Hook	11 Process Injection	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	Protocol Impersonation	Traffic Duplication	Data Destruction
Gather Victim Network Information	Server	Cloud Accounts	Launchd	Network Logon Script	Network Logon Script	1 Abuse Elevation Control Mechanism	LSA Secrets	Internet Connection Discovery	SSH	Keylogging	Fallback Channels	Scheduled Transfer	Data Encrypted for Impact
Domain Properties	Botnet	Replication Through Removable Media	Scheduled Task	RC Scripts	RC Scripts	1 DLL Side-Loading	Cached Domain Credentials	Wi-Fi Discovery	VNC	GUI Input Capture	Multiband Communication	Data Transfer Size Limits	Service Stop
DNS	Web Services	External Remote Services	Systemd Timers	Startup Items	Startup Items	1 Obfuscated Files or Information	DCSync	Remote System Discovery	Windows Remote Management	Web Portal Capture	Commonly Used Port	Exfiltration Over C2 Channel	Inhibit System Recovery

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Is Windows Process
Number of created Registry Values
Number of created Files
Visual Basic
Delphi
Java
.Net C# or VB.NET
C, C++ or other language
Is malicious
Internet

Source	Detection	Scanner	Label	Link
J4o8OaYTEF.dll	55%	ReversingLabs	Win64.Trojan.CobaltStrike

Name	Malicious	Antivirus Detection	Reputation
http://20.25.126.96:443/whI5	true		unknown
http://20.25.126.96/whI5	true		unknown

World Map of Contacted IPs

⊘No contacted IP infos

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1542741
Start date and time:	2024-10-26 09:10:08 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 28s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	default.jbs
Analysis system description:	Windows 10 x64 22H2 with Office Professional Plus 2019, Chrome 117, Firefox 118, Adobe Reader DC 23, Java 8 Update 381, 7zip 23.01
Number of analysed new started processes analysed:	14
Number of new started drivers analysed:	0
Number of existing processes analysed:	0
Number of existing drivers analysed:	0
Number of injected processes analysed:	0
Technologies:	HCA enabled EGA enabled AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Sample name:	J4o8OaYTEF.dll (renamed file extension from exe to dll, renamed because original name is a hash value)
Original Sample Name:	66a1616bf55914961e9e6512633310dc823a19d601f5ec1daf3a561031f6425c.exe
Detection:	MAL
Classification:	mal92.troj.evad.winDLL@14/0@0/0
EGA Information:	Failed
HCA Information:	Failed

Warnings

Exclude process from analysis (whitelisted): MpCmdRun.exe, dllhost.exe, WMIADAP.exe, SIHClient.exe, conhost.exe
Excluded domains from analysis (whitelisted): ocsp.digicert.com, slscr.update.microsoft.com, otelrules.azureedge.net, ctldl.windowsupdate.com, fe3cr.delivery.mp.microsoft.com
Execution Graph export aborted for target loaddll64.exe, PID 6632 because there are no executed function
Execution Graph export aborted for target rundll32.exe, PID 2252 because there are no executed function
Execution Graph export aborted for target rundll32.exe, PID 4300 because there are no executed function
Execution Graph export aborted for target rundll32.exe, PID 5648 because there are no executed function
Execution Graph export aborted for target rundll32.exe, PID 5904 because there are no executed function
Not all processes where analyzed, report is missing behavior information
VT rate limit hit for: J4o8OaYTEF.dll

Simulations

Behavior and APIs

Time	Type	Description
03:11:31	API Interceptor	1x Sleep call for process: loaddll64.exe modified

File type:	PE32+ executable (DLL) (console) x86-64 (stripped to external PDB), for MS Windows
Entropy (8bit):	5.419329901604067
TrID:	Win64 Dynamic Link Library (generic) (102004/3) 86.43% Win64 Executable (generic) (12005/4) 10.17% Generic Win/DOS Executable (2004/3) 1.70% DOS Executable Generic (2002/1) 1.70% Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.01%
File name:	J4o8OaYTEF.dll
File size:	19'968 bytes
MD5:	7e4e55e9929a9ec7dbd924b916c5c549
SHA1:	b78ffcba1a36d4262be8b6d9270bb4d42ff3c0a1
SHA256:	66a1616bf55914961e9e6512633310dc823a19d601f5ec1daf3a561031f6425c
SHA512:	42eea5375256f5c228d74c4df30fe2c6b2a25336a85db97b1bed2da3f75a9cc9dabe38ea4b4e62f64112851b3814281f42c4a5872834b661c58c5d615937bb7e
SSDEEP:	384:CUOYE/qGUvjxu4TQE6Bkuq3eTi05SPS/oUY:C7ZIjw4EESkQTNeXU
TLSH:	4992C81BAB5256DEC65EC03885E61B31FCB2F86101917A1B92F8DF332F205A1672E785
File Content Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..d...-..g..........."...+.(...J..."..0.....................................................`... ............................

File Icon


Icon Hash:	7ae282899bbab082

Static PE Info

General

Entrypoint:	0x2fbac1330
Entrypoint Section:	.text
Digitally signed:	false
Imagebase:	0x2fbac0000
Subsystem:	windows cui
Image File Characteristics:	EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, LARGE_ADDRESS_AWARE, DEBUG_STRIPPED, DLL
DLL Characteristics:	HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT
Time Stamp:	0x6718D22D [Wed Oct 23 10:38:37 2024 UTC]
TLS Callbacks:	0xfbac2840, 0x2, 0xfbac2810, 0x2
CLR (.Net) Version:
OS Version Major:	4
OS Version Minor:	0
File Version Major:	4
File Version Minor:	0
Subsystem Version Major:	4
Subsystem Version Minor:	0
Import Hash:	9cf851642951f0857c3906e25c9d014e

Entrypoint Preview

Instruction
dec eax
mov eax, dword ptr [00003F09h]
mov dword ptr [eax], 00000000h
jmp 00007FF9FC853BC3h
nop word ptr [eax+eax+00000000h]
nop dword ptr [eax]
dec eax
mov edx, ecx
dec eax
lea ecx, dword ptr [00006CA6h]
jmp 00007FF9FC855F36h
nop
dec eax
lea ecx, dword ptr [00000009h]
jmp 00007FF9FC853D19h
nop dword ptr [eax+00h]
ret
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
dec eax
jmp ecx
dec eax
arpl word ptr [00002CA6h], ax
test eax, eax
jle 00007FF9FC853D58h
cmp dword ptr [00002C9Fh], 00000000h
jle 00007FF9FC853D4Fh
dec eax
mov edx, dword ptr [0000ADFAh]
dec eax
mov dword ptr [ecx+eax], edx
dec eax
mov edx, dword ptr [0000ADF7h]
dec eax
arpl word ptr [00002C84h], ax
dec eax
mov dword ptr [ecx+eax], edx
ret
push ebp
push edi
push esi
push ebx
dec eax
sub esp, 00000088h
dec eax
arpl dx, ax
dec eax
mov edi, ecx
xor ecx, ecx
dec esp
mov ebp, eax
mov edx, eax
dec eax
mov dword ptr [esp+68h], ecx
xor ecx, ecx
dec eax
mov ebx, eax
dec eax
mov dword ptr [esp+70h], eax
call 00007FF9FC85427Fh
dec eax
mov esi, eax
dec eax
mov ecx, eax
call 00007FF9FC8542C0h
dec eax
mov ecx, esi
dec eax
mov dword ptr [esp+68h], eax
call 00007FF9FC854B28h

Data Directories

Name	Virtual Address	Virtual Size	Is in Section
IMAGE_DIRECTORY_ENTRY_EXPORT	0xb000	0xaa	.edata
IMAGE_DIRECTORY_ENTRY_IMPORT	0xc000	0x53c	.idata
IMAGE_DIRECTORY_ENTRY_RESOURCE	0x0	0x0
IMAGE_DIRECTORY_ENTRY_EXCEPTION	0x6000	0x3f0	.pdata
IMAGE_DIRECTORY_ENTRY_SECURITY	0x0	0x0
IMAGE_DIRECTORY_ENTRY_BASERELOC	0xf000	0x60	.reloc
IMAGE_DIRECTORY_ENTRY_DEBUG	0x0	0x0
IMAGE_DIRECTORY_ENTRY_COPYRIGHT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_GLOBALPTR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_TLS	0x5040	0x28	.rdata
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG	0x0	0x0
IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_IAT	0xc170	0x130	.idata
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT	0x0	0x0
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR	0x0	0x0
IMAGE_DIRECTORY_ENTRY_RESERVED	0x0	0x0

Sections

Name	Virtual Address	Virtual Size	Raw Size	MD5	Xored PE	ZLIB Complexity	File Type	Entropy	Characteristics
.text	0x1000	0x27f8	0x2800	c5605f0a82980869d3107f50da9d5687	False	0.52197265625	data	6.142409666518344	IMAGE_SCN_CNT_CODE, IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
.data	0x4000	0x4b0	0x600	ea52084343af0cf99f504698cdee102c	False	0.6673177083333334	dBase III DBT, version number 0, next free block index 1, 1st item "\376\243>{@\310\340\204>\005\321\246\242\373@\|\217\267\274V\211\262P\021\316\177oj\005G\335\265\013q\036\336\246jz+1\215\320\013@,J\312\023Q\011HLR\357\253vj\016\027\0362\301\266zh\026L\021J\200\3743,\031BS\017\317\270zf\026H\005_\343\237ZAZ\024\020O\225\354Dm\024IQ\010\335\354]PZ\033\020N\225\354DK-\033"	5.973576322127741	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
.rdata	0x5000	0x5d0	0x600	5b0fe6edfdaaaac2452a5b468120f47d	False	0.220703125	data	3.892316314815055	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
.pdata	0x6000	0x3f0	0x400	0397aa8d04714d2b227f9c360d166a32	False	0.4931640625	data	4.083264214480549	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
.xdata	0x7000	0x28c	0x400	f58e7de9ce662e0420b554924b20c6ca	False	0.251953125	data	2.6819281875170105	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
.bss	0x8000	0x2090	0x0	d41d8cd98f00b204e9800998ecf8427e	False	0	empty	0.0	IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
.edata	0xb000	0xaa	0x200	21a7c9af819f1d9ec6e5e3271034b416	False	0.271484375	data	1.8735047175023938	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
.idata	0xc000	0x53c	0x600	08b1bd49f6d3c900f8a5d4bbd21bb6d0	False	0.3411458333333333	data	3.5062610946159185	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
.CRT	0xd000	0x58	0x200	ac1b9e6966abdac8444c5c8061d6ee9b	False	0.05859375	data	0.2493249518039166	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
.tls	0xe000	0x10	0x200	bf619eac0cdf3f68d496ea9344137e8b	False	0.02734375	data	0.0	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
.reloc	0xf000	0x60	0x200	091317a82d61503c0eb448f317d30082	False	0.203125	data	1.0719998208393533	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ

Imports

DLL	Import
KERNEL32.dll	DeleteCriticalSection, EnterCriticalSection, GetCurrentProcess, GetLastError, GetModuleFileNameA, GetModuleHandleA, GetProcAddress, InitializeCriticalSection, LeaveCriticalSection, Sleep, TlsGetValue, VirtualProtect, VirtualQuery, WaitForSingleObject
msvcrt.dll	__iob_func, _amsg_exit, _initterm, _lock, _unlock, abort, calloc, fclose, fopen, fread, free, fwrite, malloc, mbstowcs, memcmp, rand, realloc, strlen, strncmp, vfprintf, wcsncat, wcsncpy

Exports

Name	Ordinal	Address
DllGetClassObject	1	0x2fbac2711
DllMain	2	0x2fbac26a7
DllRegisterServer	3	0x2fbac270b
DllUnregisterServer	4	0x2fbac270e
StartW	5	0x2fbac271a

Target ID:	0
Start time:	03:11:22
Start date:	26/10/2024
Path:	C:\Windows\System32\loaddll64.exe
Wow64 process (32bit):	false
Commandline:	loaddll64.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll"
Imagebase:	0x7ff67ecc0000
File size:	165'888 bytes
MD5 hash:	763455F9DCB24DFEECC2B9D9F8D46D52
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Yara matches:	Rule: JoeSecurity_MetasploitPayload_3, Description: Yara detected Metasploit Payload, Source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, Author: Joe Security Rule: JoeSecurity_CobaltStrike_3, Description: Yara detected CobaltStrike, Source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, Author: Joe Security Rule: Windows_Trojan_Metasploit_7bc0f998, Description: Identifies the API address lookup function leverage by metasploit shellcode, Source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, Author: unknown Rule: Windows_Trojan_Metasploit_c9773203, Description: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., Source: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, Author: unknown
Reputation:	high
Has exited:	true

Show Windows behavior

Target ID:	1
Start time:	03:11:22
Start date:	26/10/2024
Path:	C:\Windows\System32\conhost.exe
Wow64 process (32bit):	false
Commandline:	C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Imagebase:	0x7ff6ee680000
File size:	862'208 bytes
MD5 hash:	0D698AF330FD17BEE3BF90011D49251D
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high
Has exited:	true

Show Windows behavior

Target ID:	2
Start time:	03:11:22
Start date:	26/10/2024
Path:	C:\Windows\System32\cmd.exe
Wow64 process (32bit):	false
Commandline:	cmd.exe /C rundll32.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll",#1
Imagebase:	0x7ff7bff30000
File size:	289'792 bytes
MD5 hash:	8A2122E8162DBEF04694B9C3E0B6CDEE
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high
Has exited:	true

Show Windows behavior

Target ID:	3
Start time:	03:11:22
Start date:	26/10/2024
Path:	C:\Windows\System32\regsvr32.exe
Wow64 process (32bit):	false
Commandline:	regsvr32.exe /s C:\Users\user\Desktop\J4o8OaYTEF.dll
Imagebase:	0x7ff612910000
File size:	25'088 bytes
MD5 hash:	B0C2FA35D14A9FAD919E99D9D75E1B9E
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high
Has exited:	true

Show Windows behavior

Target ID:	4
Start time:	03:11:22
Start date:	26/10/2024
Path:	C:\Windows\System32\rundll32.exe
Wow64 process (32bit):	false
Commandline:	rundll32.exe "C:\Users\user\Desktop\J4o8OaYTEF.dll",#1
Imagebase:	0x7ff7c6410000
File size:	71'680 bytes
MD5 hash:	EF3179D498793BF4234F708D3BE28633
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Yara matches:	Rule: JoeSecurity_MetasploitPayload_3, Description: Yara detected Metasploit Payload, Source: 00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp, Author: Joe Security Rule: JoeSecurity_CobaltStrike_3, Description: Yara detected CobaltStrike, Source: 00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp, Author: Joe Security Rule: Windows_Trojan_Metasploit_7bc0f998, Description: Identifies the API address lookup function leverage by metasploit shellcode, Source: 00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp, Author: unknown Rule: Windows_Trojan_Metasploit_c9773203, Description: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., Source: 00000004.00000002.1577384616.000002004A240000.00000020.10000000.00040000.00000000.sdmp, Author: unknown
Reputation:	high
Has exited:	true

Show Windows behavior

Target ID:	5
Start time:	03:11:22
Start date:	26/10/2024
Path:	C:\Windows\System32\rundll32.exe
Wow64 process (32bit):	false
Commandline:	rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllGetClassObject
Imagebase:	0x7ff7c6410000
File size:	71'680 bytes
MD5 hash:	EF3179D498793BF4234F708D3BE28633
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Yara matches:	Rule: JoeSecurity_MetasploitPayload_3, Description: Yara detected Metasploit Payload, Source: 00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp, Author: Joe Security Rule: JoeSecurity_CobaltStrike_3, Description: Yara detected CobaltStrike, Source: 00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp, Author: Joe Security Rule: Windows_Trojan_Metasploit_7bc0f998, Description: Identifies the API address lookup function leverage by metasploit shellcode, Source: 00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp, Author: unknown Rule: Windows_Trojan_Metasploit_c9773203, Description: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., Source: 00000005.00000002.1577505421.0000024745F80000.00000020.10000000.00040000.00000000.sdmp, Author: unknown
Reputation:	high
Has exited:	true

Show Windows behavior

Target ID:	7
Start time:	03:11:25
Start date:	26/10/2024
Path:	C:\Windows\System32\rundll32.exe
Wow64 process (32bit):	false
Commandline:	rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllMain
Imagebase:	0x7ff7c6410000
File size:	71'680 bytes
MD5 hash:	EF3179D498793BF4234F708D3BE28633
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Yara matches:	Rule: JoeSecurity_MetasploitPayload_3, Description: Yara detected Metasploit Payload, Source: 00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp, Author: Joe Security Rule: JoeSecurity_CobaltStrike_3, Description: Yara detected CobaltStrike, Source: 00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp, Author: Joe Security Rule: Windows_Trojan_Metasploit_7bc0f998, Description: Identifies the API address lookup function leverage by metasploit shellcode, Source: 00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp, Author: unknown Rule: Windows_Trojan_Metasploit_c9773203, Description: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., Source: 00000007.00000002.1607164972.000001B58F980000.00000020.10000000.00040000.00000000.sdmp, Author: unknown
Reputation:	high
Has exited:	true

Show Windows behavior

Target ID:	8
Start time:	03:11:28
Start date:	26/10/2024
Path:	C:\Windows\System32\rundll32.exe
Wow64 process (32bit):	false
Commandline:	rundll32.exe C:\Users\user\Desktop\J4o8OaYTEF.dll,DllRegisterServer
Imagebase:	0x7ff7c6410000
File size:	71'680 bytes
MD5 hash:	EF3179D498793BF4234F708D3BE28633
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Yara matches:	Rule: JoeSecurity_MetasploitPayload_3, Description: Yara detected Metasploit Payload, Source: 00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp, Author: Joe Security Rule: JoeSecurity_CobaltStrike_3, Description: Yara detected CobaltStrike, Source: 00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp, Author: Joe Security Rule: Windows_Trojan_Metasploit_7bc0f998, Description: Identifies the API address lookup function leverage by metasploit shellcode, Source: 00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp, Author: unknown Rule: Windows_Trojan_Metasploit_c9773203, Description: Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families., Source: 00000008.00000002.1637233000.000001B9F2520000.00000020.10000000.00040000.00000000.sdmp, Author: unknown
Reputation:	high
Has exited:	true

Show Windows behavior

Function 000002093EAE010C Relevance: 2.8, Strings: 2, Instructions: 280COMMON

Download Yara Rule

Strings

27=m, xrefs: 000002093EAE031F
W, xrefs: 000002093EAE028B

Memory Dump Source

Source File: 00000000.00000002.1668627333.000002093EAE0000.00000020.10000000.00040000.00000000.sdmp, Offset: 000002093EAE0000, based on PE: false

Joe Sandbox IDA Plugin

Snapshot File: hcaresult_0_2_2093eae0000_loaddll64.jbxd

Yara matches

Similarity

API ID:
String ID: 27=m$W
API String ID: 0-2916630125
Opcode ID: f5cb3880ff0792f688ea9f5c770e835238eb481945a26bf560124749925291aa
Instruction ID: bfa4332e99a67a2bb5fdbd87ab9fb1b997fb38aab7fdfc2f09841ae0d823a11c
Opcode Fuzzy Hash: f5cb3880ff0792f688ea9f5c770e835238eb481945a26bf560124749925291aa
Instruction Fuzzy Hash: 88819F202187961BE7298BA898D936A7BD9EBD2314F2841DDF197C71C3C6108C83DB96

Description:	Adversaries may execute their own malicious payloads by side-loading DLLs. Similar to DLL Search Order Hijacking , side-loading involves hijacking which DLL a program loads. But rather than just planting the DLL within the search order of a program then waiting for the victim application to be invoked, adversaries may directly side-load their payloads by planting then invoking a legitimate application that executes their payload(s).
Tactics:	Defense Evasion, Persistence, Privilege Escalation
Data Sources:	File: File Creation, File: File Modification, Module: Module Load, Process: Process Creation
Platforms:	Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may inject code into processes in order to evade process-based defenses as well as possibly elevate privileges. Process injection is a method of executing arbitrary code in the address space of a separate live process. Running code in the context of another process may allow access to the process's memory, system/network resources, and possibly elevated privileges. Execution via process injection may also evade detection from security products since the execution is masked under a legitimate process.
Tactics:	Defense Evasion, Privilege Escalation
Data Sources:	File: File Metadata, File: File Modification, Module: Module Load, Process: OS API Execution, Process: Process Access, Process: Process Metadata, Process: Process Modification
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may circumvent mechanisms designed to control elevate privileges to gain higher-level permissions. Most modern systems contain native elevation control mechanisms that are intended to limit privileges that a user can perform on a machine. Authorization has to be granted to specific users in order to perform tasks that can be considered of higher risk. An adversary can perform several methods to take advantage of built-in control mechanisms in order to escalate privileges on a system.
Tactics:	Defense Evasion, Privilege Escalation
Data Sources:	Command: Command Execution, File: File Metadata, File: File Modification, Process: OS API Execution, Process: Process Creation, Process: Process Metadata, User Account: User Account Modification, Windows Registry: Windows Registry Key Modification
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Office 365, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may abuse Regsvr32.exe to proxy execution of malicious code. Regsvr32.exe is a command-line program used to register and unregister object linking and embedding controls, including dynamic link libraries (DLLs), on Windows systems. The Regsvr32.exe binary may also be signed by Microsoft.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, Module: Module Load, Network Traffic: Network Connection Creation, Process: Process Creation
Platforms:	Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may abuse rundll32.exe to proxy execution of malicious code. Using rundll32.exe, vice executing directly (i.e. Shared Modules ), may avoid triggering security tools that may not monitor execution of the rundll32.exe process because of allowlists or false positives from normal operations. Rundll32.exe is commonly associated with executing DLL payloads (ex: `rundll32.exe {DLLname, DLLfunction}` ).
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Metadata, Module: Module Load, Process: Process Creation
Platforms:	Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ various means to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions of the implant. They may also search for VME artifacts before dropping secondary or additional payloads. Adversaries may use the information learned from [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497) during automated discovery to shape follow-on behaviors.
Tactics:	Defense Evasion, Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. This is common behavior that can be used across different platforms and the network to evade defenses.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Module: Module Load, Process: OS API Execution, Process: Process Creation, Script: Script Execution, WMI: WMI Creation, Windows Registry: Windows Registry Key Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Firewall: Firewall Enumeration, Firewall: Firewall Metadata, Process: OS API Execution, Process: Process Creation
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	IaaS, Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may compress and/or encrypt data that is collected prior to exfiltration. Compressing the data can help to obfuscate the collected data and minimize the amount of data sent over the network. Encryption can be used to hide information that is being exfiltrated from detection or make exfiltration less conspicuous upon inspection by a defender.
Tactics:	Collection
Data Sources:	Command: Command Execution, File: File Creation, Process: Process Creation, Script: Script Execution
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Windows Analysis Report J4o8OaYTEF.dll

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Threat Intel

Malware Configuration

Threatname: CobaltStrike

Threatname: Metasploit

Yara Signatures

Memory Dumps

Sigma Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Compliance

Networking

System Summary

Data Obfuscation

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Anti Debugging

HIPS / PFW / Operating System Protection Evasion

Remote Access Functionality

Mitre Att&ck Matrix

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Unpacked PE Files

Domains

URLs

Domains and IPs

Contacted Domains

Contacted URLs

World Map of Contacted IPs

General Information

Warnings

Simulations

Behavior and APIs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

File Icon

Static PE Info

General

Entrypoint Preview

Data Directories

Sections

Imports

Exports

Network Behavior

Statistics

CPU Usage

Memory Usage

High Level Behavior Distribution

back

Behavior

System Behavior

Analysis Process: loaddll64.exePID: 6632, Parent PID: 4084

General

Chronological Activities

Analysis Process: conhost.exePID: 6488, Parent PID: 6632

Windows Analysis Report
J4o8OaYTEF.dll