Malware Analysis Report

2024-10-19 08:01

Sample ID 240416-b9jtfagc6t
Target f269ccb519476724082fd3d4383d5ca6_JaffaCakes118
SHA256 e56800ef1346a3a28f31c466eb1d31655a127c7cb81647bb7697558e7a879ed2
Tags
darkcomet persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

e56800ef1346a3a28f31c466eb1d31655a127c7cb81647bb7697558e7a879ed2

Threat Level: Known bad

The file f269ccb519476724082fd3d4383d5ca6_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

darkcomet persistence rat trojan

Darkcomet

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Suspicious use of SetThreadContext

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-16 01:50

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-16 01:50

Reported

2024-04-16 01:53

Platform

win7-20240221-en

Max time kernel

4s

Max time network

3s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\winini.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Live = "C:\\Users\\Admin\\AppData\\Local\\Temp\\hostcv.exe" C:\Users\Admin\AppData\Local\Temp\hostcv.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3068 set thread context of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2224 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\hostcv.exe
PID 2224 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\hostcv.exe
PID 2224 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\hostcv.exe
PID 2224 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\hostcv.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 3068 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\hostcv.exe

"C:\Users\Admin\AppData\Local\Temp\hostcv.exe"

C:\Users\Admin\AppData\Local\Temp\winini.exe

C:\Users\Admin\AppData\Local\Temp\winini.exe

Network

N/A

Files

memory/2224-0-0x0000000074A80000-0x000000007502B000-memory.dmp

memory/2224-1-0x0000000074A80000-0x000000007502B000-memory.dmp

memory/2224-2-0x00000000022C0000-0x0000000002300000-memory.dmp

\Users\Admin\AppData\Local\Temp\hostcv.exe

MD5 771c6ba0050a51ca574d2e316468720b
SHA1 6fc9f25f8f6fd2295e394fbbac529c5ed6a80459
SHA256 5bcce062586bf4f2be50b18110cb25f413f2f2049f505f1aed7f588951826900
SHA512 bbcbf93ae4ef4a08798c4f68b58267885a3db147d442ee5df449aa723d83d4e6004b901c28d55a463c74c072390b13434fccd198049cd93fc05af097f853fb64

memory/3068-13-0x0000000074A80000-0x000000007502B000-memory.dmp

memory/3068-14-0x00000000001C0000-0x0000000000200000-memory.dmp

memory/3068-15-0x0000000074A80000-0x000000007502B000-memory.dmp

\Users\Admin\AppData\Local\Temp\winini.exe

MD5 ed797d8dc2c92401985d162e42ffa450
SHA1 0f02fc517c7facc4baefde4fe9467fb6488ebabe
SHA256 b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e
SHA512 e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

memory/2680-20-0x0000000013140000-0x000000001320F000-memory.dmp

memory/2680-21-0x0000000013140000-0x000000001320F000-memory.dmp

memory/2224-22-0x0000000074A80000-0x000000007502B000-memory.dmp

memory/2680-23-0x0000000013140000-0x000000001320F000-memory.dmp

memory/2680-25-0x0000000013140000-0x000000001320F000-memory.dmp

memory/2680-24-0x0000000013140000-0x000000001320F000-memory.dmp

memory/2680-26-0x0000000013140000-0x000000001320F000-memory.dmp

memory/2680-27-0x0000000013140000-0x000000001320F000-memory.dmp

memory/2680-28-0x0000000013140000-0x000000001320F000-memory.dmp

memory/2680-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2680-31-0x0000000013140000-0x000000001320F000-memory.dmp

memory/3068-37-0x0000000074A80000-0x000000007502B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-16 01:50

Reported

2024-04-16 01:50

Platform

win10v2004-20240412-en

Max time kernel

3s

Max time network

5s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\winini.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Live = "C:\\Users\\Admin\\AppData\\Local\\Temp\\hostcv.exe" C:\Users\Admin\AppData\Local\Temp\hostcv.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2480 set thread context of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\winini.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 844 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\hostcv.exe
PID 844 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\hostcv.exe
PID 844 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\hostcv.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe
PID 2480 wrote to memory of 4880 N/A C:\Users\Admin\AppData\Local\Temp\hostcv.exe C:\Users\Admin\AppData\Local\Temp\winini.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f269ccb519476724082fd3d4383d5ca6_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\hostcv.exe

"C:\Users\Admin\AppData\Local\Temp\hostcv.exe"

C:\Users\Admin\AppData\Local\Temp\winini.exe

C:\Users\Admin\AppData\Local\Temp\winini.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4880 -ip 4880

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4880 -s 12

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp

Files

memory/844-0-0x0000000074D80000-0x0000000075331000-memory.dmp

memory/844-1-0x00000000018A0000-0x00000000018B0000-memory.dmp

memory/844-2-0x0000000074D80000-0x0000000075331000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\hostcv.exe

MD5 771c6ba0050a51ca574d2e316468720b
SHA1 6fc9f25f8f6fd2295e394fbbac529c5ed6a80459
SHA256 5bcce062586bf4f2be50b18110cb25f413f2f2049f505f1aed7f588951826900
SHA512 bbcbf93ae4ef4a08798c4f68b58267885a3db147d442ee5df449aa723d83d4e6004b901c28d55a463c74c072390b13434fccd198049cd93fc05af097f853fb64

memory/2480-16-0x0000000074D80000-0x0000000075331000-memory.dmp

memory/844-15-0x0000000074D80000-0x0000000075331000-memory.dmp

memory/2480-18-0x00000000012B0000-0x00000000012C0000-memory.dmp

memory/2480-21-0x0000000074D80000-0x0000000075331000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\winini.exe

MD5 e118330b4629b12368d91b9df6488be0
SHA1 ce90218c7e3b90df2a3409ec253048bb6472c2fd
SHA256 3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9
SHA512 ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

memory/4880-20-0x0000000013140000-0x000000001320F000-memory.dmp

memory/2480-24-0x0000000074D80000-0x0000000075331000-memory.dmp