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Linux Analysis Report
RQG7u9IH4a.elf

Overview

General Information

Sample name:	RQG7u9IH4a.elf renamed because original name is a hash value
Original sample name:	e09f6bd400ba7ce4232be37e75338cb7086feff5be9d29e40014cff4b2d7e4d4.elf
Analysis ID:	1520718
MD5:	d06e8b6af389d64a19ffaafe99642500
SHA1:	19738f5b9909c32e02c55aae6f9e45f82707ee81
SHA256:	e09f6bd400ba7ce4232be37e75338cb7086feff5be9d29e40014cff4b2d7e4d4
Tags:	45-124-64-27elfuser-JAMESWT_MHT
Infos:

Detection

ConnectBack

Score:	80
Range:	0 - 100
Whitelisted:	false

Signatures

Found malware configuration

Multi AV Scanner detection for submitted file

Yara detected ConnectBack

Connects to many ports of the same IP (likely port scanning)

Machine Learning detection for dropped file

Sample deletes itself

Spawns processes using file descriptor names (likely to hide the executable path or fileless malware)

Detected TCP or UDP traffic on non-standard ports

Sample has stripped symbol table

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

Writes ELF files to disk

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1520718
Start date and time:	2024-09-27 19:12:09 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 34s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	defaultlinuxfilecookbook.jbs
Analysis system description:	Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:	default
Sample name:	RQG7u9IH4a.elf renamed because original name is a hash value
Original Sample Name:	e09f6bd400ba7ce4232be37e75338cb7086feff5be9d29e40014cff4b2d7e4d4.elf
Detection:	MAL
Classification:	mal80.troj.evad.linELF@0/1@0/0

Warnings

VT rate limit hit for: RQG7u9IH4a.elf

Runtime Messages

Command:	/tmp/RQG7u9IH4a.elf
PID:	6240
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	[kworker/8:AkZFaLl]
Standard Error:

Process Tree

system is lnxubuntu20

RQG7u9IH4a.elf (PID: 6240, Parent: 6164, MD5: d06e8b6af389d64a19ffaafe99642500) Arguments: /tmp/RQG7u9IH4a.elf

RQG7u9IH4a.elf New Fork (PID: 6245, Parent: 6240)

3 (PID: 6245, Parent: 6240, MD5: 428a5618b90e0d98b96205ce2b40bf14) Arguments: [kworker/8:AkZFaLl]

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
ConnectBack	ConnectBack malware is a type of malicious software designed to establish unauthorized connections from an infected system to a remote server. Once a victim's device is compromised, ConnectBack creates a covert channel for communication, allowing the attacker to remotely control and gather sensitive information from the compromised system.	No Attribution	https://labs.sucuri.net/signatures/malwares/pl-backdoor-connectback-001/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.connectback

Yara Signatures

Memory Dumps

Source	Rule	Description	Author	Strings
6245.1.0000000000400000.0000000000401000.rwx.sdmp	JoeSecurity_ConnectBack	Yara detected ConnectBack	Joe Security

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: 6245.1.0000000000400000.0000000000401000.rwx.sdmp

Malware Configuration Extractor: ConnectBack {"C2": "45.124.64.27:47159"}

Multi AV Scanner detection for submitted file

Source: RQG7u9IH4a.elf

ReversingLabs: Detection: 18%

Machine Learning detection for dropped file

Source: /memfd: (deleted)

Joe Sandbox ML: detected

Networking

Connects to many ports of the same IP (likely port scanning)

Source: global traffic

TCP traffic: 45.124.64.27 ports 47159,1,4,5,7,9

Source: global traffic

TCP traffic: 192.168.2.23:44276 -> 45.124.64.27:47159

Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic	TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80

Source: unknown	TCP traffic detected without corresponding DNS query: 45.124.64.27
Source: unknown	TCP traffic detected without corresponding DNS query: 45.124.64.27
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 45.124.64.27
Source: unknown	TCP traffic detected without corresponding DNS query: 45.124.64.27
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal80.troj.evad.linELF@0/1@0/0

Source: ELF file section

Submission: RQG7u9IH4a.elf

Source: /tmp/RQG7u9IH4a.elf (PID: 6240)

File written: /memfd: (deleted)

Jump to dropped file

Hooking and other Techniques for Hiding and Protection

Sample deletes itself

Source: /tmp/RQG7u9IH4a.elf (PID: 6240)

File: /tmp/RQG7u9IH4a.elf

Jump to behavior

Spawns processes using file descriptor names (likely to hide the executable path or fileless malware)

Source: /tmp/RQG7u9IH4a.elf (PID: 6245)

Executable: /proc/self/fd/3 -> [kworker/8:AkZFaLl]

Jump to behavior

Malware Analysis System Evasion

Spawns processes using file descriptor names (likely to hide the executable path or fileless malware)

Source: /tmp/RQG7u9IH4a.elf (PID: 6245)

Executable: /proc/self/fd/3 -> [kworker/8:AkZFaLl]

Jump to behavior

Stealing of Sensitive Information

Yara detected ConnectBack

Source: Yara match

File source: 6245.1.0000000000400000.0000000000401000.rwx.sdmp, type: MEMORY

Remote Access Functionality

Yara detected ConnectBack

Source: Yara match

File source: 6245.1.0000000000400000.0000000000401000.rwx.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	Path Interception	Path Interception	1 Hide Artifacts	OS Credential Dumping	System Service Discovery	Remote Services	Data from Local System	1 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	1 File Deletion	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Non-Standard Port	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	Obfuscated Files or Information	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	1 Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact

Malware Configuration

Threatname: ConnectBack

{"C2": "45.124.64.27:47159"}

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
RQG7u9IH4a.elf	18%	ReversingLabs	Win32.Trojan.Generic

Dropped Files

Source	Detection	Scanner	Label	Link
/memfd: (deleted)	100%	Joe Sandbox ML
/memfd: (deleted)	50%	ReversingLabs	Linux.Backdoor.Meterpreter

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

World Map of Contacted IPs

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public IPs

IP	Domain	Country	ASN	ASN Name	Malicious
45.124.64.27	unknown	Hong Kong	36351	SOFTLAYERUS	true
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
109.202.202.202	kpLwzBouH4.elf	Get hash	malicious	Unknown	Browse	ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
91.189.91.43	flow.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Linux.Siggen.8107.19273.21368.elf	Get hash	malicious	Unknown	Browse
	pl.arm6.elf	Get hash	malicious	Gafgyt	Browse
	pl.mpsl.elf	Get hash	malicious	Gafgyt	Browse
	pl.arm4.elf	Get hash	malicious	Gafgyt	Browse
	x86.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.CVE-2021-4034-T.6244.4007.elf	Get hash	malicious	Unknown	Browse
	mipsel.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	arm61.elf	Get hash	malicious	Gafgyt, Mirai	Browse
91.189.91.42	flow.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Linux.Siggen.8107.19273.21368.elf	Get hash	malicious	Unknown	Browse
	pl.arm6.elf	Get hash	malicious	Gafgyt	Browse
	pl.mpsl.elf	Get hash	malicious	Gafgyt	Browse
	pl.arm4.elf	Get hash	malicious	Gafgyt	Browse
	x86.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.CVE-2021-4034-T.6244.4007.elf	Get hash	malicious	Unknown	Browse
	mipsel.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	arm61.elf	Get hash	malicious	Gafgyt, Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	flow.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.Linux.Siggen.8107.19273.21368.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	pl.arm6.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	pl.mpsl.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	pl.arm4.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	http://beonlineboo.com	Get hash	malicious	Unknown	Browse	185.125.189.223
	i586.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.ELF.CVE-2021-4034-T.6244.4007.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
CANONICAL-ASGB	flow.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.Linux.Siggen.8107.19273.21368.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	pl.arm6.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	pl.mpsl.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	pl.arm4.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	http://beonlineboo.com	Get hash	malicious	Unknown	Browse	185.125.189.223
	i586.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.ELF.CVE-2021-4034-T.6244.4007.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
INIT7CH	flow.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	SecuriteInfo.com.Linux.Siggen.8107.19273.21368.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	pl.arm6.elf	Get hash	malicious	Gafgyt	Browse	109.202.202.202
	pl.mpsl.elf	Get hash	malicious	Gafgyt	Browse	109.202.202.202
	pl.arm4.elf	Get hash	malicious	Gafgyt	Browse	109.202.202.202
	x86.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	SecuriteInfo.com.ELF.CVE-2021-4034-T.6244.4007.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	mipsel.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	arm61.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
SOFTLAYERUS	https://uhcdenal.com/	Get hash	malicious	Unknown	Browse	52.116.53.155
	z65orderrequest.bat.exe	Get hash	malicious	GuLoader, Remcos	Browse	43.226.229.233
	SecuriteInfo.com.Linux.Siggen.9999.1529.24643.elf	Get hash	malicious	Unknown	Browse	169.63.50.112
	http://pub-d64d63bc9b0049929bfeb3afd89bfb4d.r2.dev/file.html	Get hash	malicious	HTMLPhisher	Browse	169.55.190.245
	Awb_Shipping_Documents_BL_Invoice_Packinglist_0000000000000000000000pdf.exe	Get hash	malicious	Remcos, GuLoader	Browse	172.111.137.137
	http://pub-d64d63bc9b0049929bfeb3afd89bfb4d.r2.dev/file.html	Get hash	malicious	HTMLPhisher	Browse	169.55.190.245
	SecuriteInfo.com.Linux.Siggen.9999.32167.12194.elf	Get hash	malicious	Unknown	Browse	70.87.118.83
	SecuriteInfo.com.Linux.Siggen.9999.11593.30273.elf	Get hash	malicious	Unknown	Browse	173.192.57.8
	http://17ebook.com	Get hash	malicious	Unknown	Browse	52.116.53.155
	https://bankllist.us	Get hash	malicious	Unknown	Browse	52.116.53.150

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/memfd: (deleted)

Download File

Process:	/tmp/RQG7u9IH4a.elf
File Type:	ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, no section header
Category:	dropped
Size (bytes):	295
Entropy (8bit):	5.309859275769177
Encrypted:	false
SSDEEP:	6:BnX//In8/r1aklZRRzvO2+vVo1LvqeR552m1yKcyBHKRec:BvwncrQ6T6nVoBvvRn2m1Byec
MD5:	428A5618B90E0D98B96205CE2B40BF14
SHA1:	A14953444955B6049D402BB5445D25A9EA794C9A
SHA-256:	D75994684D5BC04028DCA45E93E58F716E06F69F173CF4AB47F9C68D5436A247
SHA-512:	11FAF46CC55E07B01A36B1F57BEBF5D8EAA740A1F4D96DF197672985D73AAEA05C7F9CC9C110E785703DC4B986AFC056BBD53382F960AAD29AA2AA81E49C319A
Malicious:	true
Antivirus:	Antivirus: Joe Sandbox ML, Detection: 100% Antivirus: ReversingLabs, Detection: 50%
Reputation:	low
Preview:	.ELF..............>.....x.@.....@...................@.8...........................@.......@.....'.......................H1.H......H......H..a.L...H1X'H-..............0.}A`..;......F...&.K.........`..I..y.Z.?.1..{V....[.J..... ..d...Hs.../.T.`.....I..^.P..I.S..&..6.`..I.`.n...HrT<..L...

Static File Info

General

File type:	ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, Go BuildID=dVWbo_pAVcVsrKUMrkUE/EqRjtXx7CGIFRuBWWLnb/tfTDuGvBVS2n_i2CYGkD/vWGbYUxMNx08ySmiDjaL, stripped
Entropy (8bit):	6.007053691078284
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 49.77% ELF Executable and Linkable format (generic) (4004/1) 49.46% Lumena CEL bitmap (63/63) 0.78%
File name:	RQG7u9IH4a.elf
File size:	1'437'696 bytes
MD5:	d06e8b6af389d64a19ffaafe99642500
SHA1:	19738f5b9909c32e02c55aae6f9e45f82707ee81
SHA256:	e09f6bd400ba7ce4232be37e75338cb7086feff5be9d29e40014cff4b2d7e4d4
SHA512:	76a4e173a991f1ad6cfb060181f8c7c485a698b2735314cc38175c180463984cca1f5039ba1bdf8e4d9a53c91ead369b13c227f5208e77e7cb4704d8cd30610a
SSDEEP:	24576:mf4/zgPJrtFrb/TbvO90dL3BmAFd4A64nsfJvOW/iB5l3geEoWvBzP9CD1P:mf4/zMJvrb/TbvO90dL3BmAFd4A64nsS
TLSH:	2D653A47BC9091A6C1AA9232896692D27B707C580F3063D33B51B7FD2F36BE85E75318
File Content Preview:	.ELF..............>.......E.....@...................@.8...@.............@.......@.@.....@.@...............................................@.......@.....d.......d.................................@.......@.....%.......%.................................J....

Static ELF Info

ELF header
Class:	ELF64
Data:	2's complement, little endian
Version:	1 (current)
Machine:	Advanced Micro Devices X86-64
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x45f2a0
Flags:	0x0
ELF Header Size:	64
Program Header Offset:	64
Program Header Size:	56
Number of Program Headers:	7
Section Header Offset:	456
Section Header Size:	64
Number of Section Headers:	14
Header String Table Index:	3

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.text	PROGBITS	0x401000	0x1000	0x9e225	0x0	0x6	AX	32
.rodata	PROGBITS	0x4a0000	0xa0000	0x3ec3f	0x0	0x2	A	32
.shstrtab	STRTAB	0x0	0xdec40	0xa5	0x0	0x0		1
.typelink	PROGBITS	0x4ded00	0xded00	0x5dc	0x0	0x2	A	32
.itablink	PROGBITS	0x4df2e0	0xdf2e0	0xc0	0x0	0x2	A	32
.gosymtab	PROGBITS	0x4df3a0	0xdf3a0	0x0	0x0	0x2	A	1
.gopclntab	PROGBITS	0x4df3a0	0xdf3a0	0x637f8	0x0	0x2	A	32
.go.buildinfo	PROGBITS	0x543000	0x143000	0x130	0x0	0x3	WA	16
.noptrdata	PROGBITS	0x543140	0x143140	0x136a0	0x0	0x3	WA	32
.data	PROGBITS	0x5567e0	0x1567e0	0x7cf0	0x0	0x3	WA	32
.bss	NOBITS	0x55e4e0	0x15e4e0	0x2f1c0	0x0	0x3	WA	32
.noptrbss	NOBITS	0x58d6a0	0x18d6a0	0x5208	0x0	0x3	WA	32
.note.go.buildid	NOTE	0x400f9c	0xf9c	0x64	0x0	0x2	A	4

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
PHDR	0x40	0x400040	0x400040	0x188	0x188	1.5944	0x4	R	0x1000
NOTE	0xf9c	0x400f9c	0x400f9c	0x64	0x64	5.2723	0x4	R	0x4	.note.go.buildid
LOAD	0x0	0x400000	0x400000	0x9f225	0x9f225	6.1381	0x5	R E	0x1000	.text .note.go.buildid
LOAD	0xa0000	0x4a0000	0x4a0000	0xa2b98	0xa2b98	5.4130	0x4	R	0x1000	.rodata .typelink .itablink .gosymtab .gopclntab
LOAD	0x143000	0x543000	0x543000	0x1b4e0	0x4f8a8	4.7297	0x6	RW	0x1000	.go.buildinfo .noptrdata .data .bss .noptrbss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x8
LOOS+5041580	0x0	0x0	0x0	0x0	0x0	0.0000	0x2a00		0x8

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Sep 27, 2024 19:12:54.267345905 CEST	44276	47159	192.168.2.23	45.124.64.27
Sep 27, 2024 19:12:54.272650957 CEST	47159	44276	45.124.64.27	192.168.2.23
Sep 27, 2024 19:12:54.272717953 CEST	44276	47159	192.168.2.23	45.124.64.27
Sep 27, 2024 19:12:55.976108074 CEST	43928	443	192.168.2.23	91.189.91.42
Sep 27, 2024 19:12:56.283092976 CEST	47159	44276	45.124.64.27	192.168.2.23
Sep 27, 2024 19:12:56.283729076 CEST	44276	47159	192.168.2.23	45.124.64.27
Sep 27, 2024 19:12:56.542745113 CEST	44276	47159	192.168.2.23	45.124.64.27
Sep 27, 2024 19:12:56.547836065 CEST	47159	44276	45.124.64.27	192.168.2.23
Sep 27, 2024 19:13:01.351156950 CEST	42836	443	192.168.2.23	91.189.91.43
Sep 27, 2024 19:13:02.630997896 CEST	42516	80	192.168.2.23	109.202.202.202
Sep 27, 2024 19:13:16.453036070 CEST	43928	443	192.168.2.23	91.189.91.42
Sep 27, 2024 19:13:28.739269972 CEST	42836	443	192.168.2.23	91.189.91.43
Sep 27, 2024 19:13:32.834789991 CEST	42516	80	192.168.2.23	109.202.202.202
Sep 27, 2024 19:13:57.407285929 CEST	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: RQG7u9IH4a.elf PID: 6240, Parent PID: 6164

General

Start time (UTC):	17:12:53
Start date (UTC):	27/09/2024
Path:	/tmp/RQG7u9IH4a.elf
Arguments:	/tmp/RQG7u9IH4a.elf
File size:	1437696 bytes
MD5 hash:	d06e8b6af389d64a19ffaafe99642500

Chronological Activities

Analysis Process: RQG7u9IH4a.elf PID: 6245, Parent PID: 6240

General

Start time (UTC):	17:12:53
Start date (UTC):	27/09/2024
Path:	/tmp/RQG7u9IH4a.elf
Arguments:	-
File size:	1437696 bytes
MD5 hash:	d06e8b6af389d64a19ffaafe99642500

Chronological Activities

Analysis Process: 3 PID: 6245, Parent PID: 6240

General

Start time (UTC):	17:12:53
Start date (UTC):	27/09/2024
Path:	/proc/self/fd/3
Arguments:	[kworker/8:AkZFaLl]
File size:	295 bytes
MD5 hash:	428a5618b90e0d98b96205ce2b40bf14

Description:	Adversaries may attempt to hide artifacts associated with their behaviors to evade detection. Operating systems may have features to hide various artifacts, such as important system files and administrative task execution, to avoid disrupting user work environments and prevent users from changing files or features on the system. Adversaries may abuse these features to hide artifacts such as files, directories, user accounts, or other system activity to evade detection.
Tactics:	Defense Evasion
Data Sources:	Application Log: Application Log Content, Command: Command Execution, File: File Creation, File: File Metadata, File: File Modification, Firmware: Firmware Modification, Process: OS API Execution, Process: Process Creation, Script: Script Execution, Service: Service Creation, User Account: User Account Creation, User Account: User Account Metadata, Windows Registry: Windows Registry Key Modification
Platforms:	Linux, macOS, Office 365, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete files left behind by the actions of their intrusion activity. Malware, tools, or other non-native files dropped or created on a system by an adversary (ex: Ingress Tool Transfer ) may leave traces to indicate to what was done within a network and how. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Deletion
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 a protocol and port pairing that are typically not associated. For example, HTTPS over port 8088or port 587as opposed to the traditional port 443. Adversaries may make changes to the standard port used by a protocol to bypass filtering or muddle analysis/parsing of network data.
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

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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Linux Analysis Report RQG7u9IH4a.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Malware Configuration

Threatname: ConnectBack

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

/memfd: (deleted)

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: RQG7u9IH4a.elf PID: 6240, Parent PID: 6164

General

Chronological Activities

Analysis Process: RQG7u9IH4a.elf PID: 6245, Parent PID: 6240

General

Chronological Activities

Analysis Process: 3 PID: 6245, Parent PID: 6240

General

Chronological Activities

Linux Analysis Report
RQG7u9IH4a.elf