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Windows
Analysis Report
CFV20240600121.exe
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
Yara detected AntiVM3
Yara detected FormBook
.NET source code contains potential unpacker
AI detected suspicious sample
Adds a directory exclusion to Windows Defender
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if the current process is being debugged
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Drops PE files
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found inlined nop instructions (likely shell or obfuscated code)
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
PE / OLE file has an invalid certificate
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicious Add Scheduled Task Parent
Sigma detected: Suspicious Schtasks From Env Var Folder
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- CFV20240600121.exe (PID: 5640 cmdline:
"C:\Users\ user\Deskt op\CFV2024 0600121.ex e" MD5: 8874212365EF57AEEE15045F9EC684EB) - powershell.exe (PID: 6500 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\Des ktop\CFV20 240600121. exe" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 5444 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 6752 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" Add-MpPref erence -Ex clusionPat h "C:\User s\user\App Data\Roami ng\BPSHhDG mARC.exe" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 4124 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WmiPrvSE.exe (PID: 6096 cmdline:
C:\Windows \system32\ wbem\wmipr vse.exe -s ecured -Em bedding MD5: 60FF40CFD7FB8FE41EE4FE9AE5FE1C51) - schtasks.exe (PID: 1288 cmdline:
"C:\Window s\System32 \schtasks. exe" /Crea te /TN "Up dates\BPSH hDGmARC" / XML "C:\Us ers\user\A ppData\Loc al\Temp\tm pA2C.tmp" MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 2520 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - CFV20240600121.exe (PID: 4292 cmdline:
"C:\Users\ user\Deskt op\CFV2024 0600121.ex e" MD5: 8874212365EF57AEEE15045F9EC684EB) - CFV20240600121.exe (PID: 2556 cmdline:
"C:\Users\ user\Deskt op\CFV2024 0600121.ex e" MD5: 8874212365EF57AEEE15045F9EC684EB) - CFV20240600121.exe (PID: 7056 cmdline:
"C:\Users\ user\Deskt op\CFV2024 0600121.ex e" MD5: 8874212365EF57AEEE15045F9EC684EB) - CFV20240600121.exe (PID: 3664 cmdline:
"C:\Users\ user\Deskt op\CFV2024 0600121.ex e" MD5: 8874212365EF57AEEE15045F9EC684EB) - RLaIKKYKtFdTMrMFejOcvZaAxPi.exe (PID: 6164 cmdline:
"C:\Progra m Files (x 86)\KPlcap iOrpuwNxaw UeHxBymACK MrfoOvZxUC vZHioLsbnU \RLaIKKYKt FdTMrMFejO cvZaAxPi.e xe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - write.exe (PID: 7540 cmdline:
"C:\Window s\SysWOW64 \write.exe " MD5: 3D6FDBA2878656FA9ECB81F6ECE45703) - RLaIKKYKtFdTMrMFejOcvZaAxPi.exe (PID: 2608 cmdline:
"C:\Progra m Files (x 86)\KPlcap iOrpuwNxaw UeHxBymACK MrfoOvZxUC vZHioLsbnU \RLaIKKYKt FdTMrMFejO cvZaAxPi.e xe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - firefox.exe (PID: 7812 cmdline:
"C:\Progra m Files\Mo zilla Fire fox\Firefo x.exe" MD5: C86B1BE9ED6496FE0E0CBE73F81D8045) - BPSHhDGmARC.exe (PID: 1288 cmdline:
C:\Users\u ser\AppDat a\Roaming\ BPSHhDGmAR C.exe MD5: 8874212365EF57AEEE15045F9EC684EB) - schtasks.exe (PID: 7296 cmdline:
"C:\Window s\System32 \schtasks. exe" /Crea te /TN "Up dates\BPSH hDGmARC" / XML "C:\Us ers\user\A ppData\Loc al\Temp\tm p25A3.tmp" MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 7304 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - BPSHhDGmARC.exe (PID: 7356 cmdline:
"C:\Users\ user\AppDa ta\Roaming \BPSHhDGmA RC.exe" MD5: 8874212365EF57AEEE15045F9EC684EB) - BPSHhDGmARC.exe (PID: 7368 cmdline:
"C:\Users\ user\AppDa ta\Roaming \BPSHhDGmA RC.exe" MD5: 8874212365EF57AEEE15045F9EC684EB)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Formbook, Formbo | FormBook contains a unique crypter RunPE that has unique behavioral patterns subject to detection. It was initially called "Babushka Crypter" by Insidemalware. |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Click to see the 13 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
|
System Summary |
---|
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Persistence and Installation Behavior |
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Source: | Author: Joe Security: |
Timestamp: | 06/10/24-10:21:25.134241 |
SID: | 2855465 |
Source Port: | 51374 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:21:39.107622 |
SID: | 2855465 |
Source Port: | 51378 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:24:15.334767 |
SID: | 2855465 |
Source Port: | 51422 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:20:47.394016 |
SID: | 2855465 |
Source Port: | 49717 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:23:47.463476 |
SID: | 2855465 |
Source Port: | 51414 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:23:33.648907 |
SID: | 2855465 |
Source Port: | 51410 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:21:11.241457 |
SID: | 2855465 |
Source Port: | 51370 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:21:52.948385 |
SID: | 2855465 |
Source Port: | 51382 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:22:07.327341 |
SID: | 2855465 |
Source Port: | 51386 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:23:19.260037 |
SID: | 2855465 |
Source Port: | 51406 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:22:21.730111 |
SID: | 2855465 |
Source Port: | 51390 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:22:36.059394 |
SID: | 2855465 |
Source Port: | 51394 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:24:01.195678 |
SID: | 2855465 |
Source Port: | 51418 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:22:51.257192 |
SID: | 2855465 |
Source Port: | 51398 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 06/10/24-10:23:05.760710 |
SID: | 2855465 |
Source Port: | 51402 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira URL Cloud: |
Source: | ReversingLabs: |
Source: | ReversingLabs: | |||
Source: | Virustotal: | Perma Link |
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Source: | Joe Sandbox ML: |
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Source: | Code function: | 0_2_0A13EF37 | |
Source: | Code function: | 13_2_0723E19F |
Networking |
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