Malware Analysis Report

2024-08-06 18:55

Sample ID 240620-tlfqzszhjk
Target 079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118
SHA256 01d6d2083ce395daa54ef71fcd535b288b76a834351df7228a133bb214460812
Tags
darkcomet persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

01d6d2083ce395daa54ef71fcd535b288b76a834351df7228a133bb214460812

Threat Level: Known bad

The file 079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

darkcomet persistence rat trojan

Darkcomet family

Darkcomet

Modifies WinLogon for persistence

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-20 16:08

Signatures

Darkcomet family

darkcomet

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 16:08

Reported

2024-06-20 16:11

Platform

win7-20240611-en

Max time kernel

63s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: 33 N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: 34 N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: 35 N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe"

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 humtum.no-ip.info udp

Files

memory/1096-0-0x0000000000260000-0x0000000000261000-memory.dmp

\Users\Admin\Documents\MSDCSC\msdcsc.exe

MD5 079717f4ad89d2a562d581a7d96ec2c1
SHA1 c9febbe1f779fb402a29e85b8954279d09253b4e
SHA256 01d6d2083ce395daa54ef71fcd535b288b76a834351df7228a133bb214460812
SHA512 2713447dc599f7b2afe954a28598dc641c9c2db0ba7edb86e1dc48adacaee7daec563af8fee0e9e42df7585f4a8dff31ea574e27ef11dbcc2b641a27f2e9f096

memory/1096-11-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/1672-12-0x0000000000370000-0x0000000000371000-memory.dmp

memory/1672-13-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/1672-14-0x0000000000400000-0x00000000004C3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 16:08

Reported

2024-06-20 16:11

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe"

Signatures

Darkcomet

trojan rat darkcomet

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: 34 N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: 35 N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeSystemtimePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeUndockPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: 33 N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: 34 N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: 35 N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A
Token: 36 N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\Documents\MSDCSC\msdcsc.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\079717f4ad89d2a562d581a7d96ec2c1_JaffaCakes118.exe"

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp
US 8.8.8.8:53 humtum.no-ip.info udp

Files

memory/1384-0-0x0000000002290000-0x0000000002291000-memory.dmp

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

MD5 079717f4ad89d2a562d581a7d96ec2c1
SHA1 c9febbe1f779fb402a29e85b8954279d09253b4e
SHA256 01d6d2083ce395daa54ef71fcd535b288b76a834351df7228a133bb214460812
SHA512 2713447dc599f7b2afe954a28598dc641c9c2db0ba7edb86e1dc48adacaee7daec563af8fee0e9e42df7585f4a8dff31ea574e27ef11dbcc2b641a27f2e9f096

memory/1384-13-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-14-0x0000000002180000-0x0000000002181000-memory.dmp

memory/2360-15-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-16-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-17-0x0000000002180000-0x0000000002181000-memory.dmp

memory/2360-18-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-19-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-20-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-21-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-22-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-23-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-24-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-25-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-26-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-27-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-28-0x0000000000400000-0x00000000004C3000-memory.dmp

memory/2360-29-0x0000000000400000-0x00000000004C3000-memory.dmp