Malware Analysis Report

2024-08-06 19:34

Sample ID 240518-tf93msbd3v
Target VirusShare_f00eebcf45aa28251dabff693cb87db0
SHA256 0f4a0735bd83b54dc178a0777fab05e566d9e310c7e9b27477fffcde9e16ead0
Tags
darkcomet 0207tltk 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 Overview

score
10/10

SHA256

0f4a0735bd83b54dc178a0777fab05e566d9e310c7e9b27477fffcde9e16ead0

Threat Level: Known bad

The file VirusShare_f00eebcf45aa28251dabff693cb87db0 was found to be: Known bad.

Malicious Activity Summary

darkcomet 0207tltk persistence rat trojan

Darkcomet

Adds Run key to start application

Suspicious use of SetThreadContext

Enumerates physical storage devices

Unsigned PE

Modifies registry class

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-05-18 16:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-18 16:01

Reported

2024-05-18 16:01

Platform

win10-20240404-en

Max time kernel

9s

Max time network

5s

Command Line

"C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe"

Signatures

Darkcomet

trojan rat darkcomet

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Windows\CurrentVersion\Run\LabelRouge = "C:\\Users\\Admin\\AppData\\Roaming\\LabelRouge.exe" C:\Windows\SysWOW64\WScript.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 5000 set thread context of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeChangeNotifyPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeImpersonatePrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: SeCreateGlobalPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: 34 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: 35 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A
Token: 36 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5000 wrote to memory of 4620 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\SysWOW64\cmd.exe
PID 5000 wrote to memory of 4620 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\SysWOW64\cmd.exe
PID 5000 wrote to memory of 4620 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\SysWOW64\cmd.exe
PID 5000 wrote to memory of 3960 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\SysWOW64\WScript.exe
PID 5000 wrote to memory of 3960 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\SysWOW64\WScript.exe
PID 5000 wrote to memory of 3960 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\SysWOW64\WScript.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 5000 wrote to memory of 3868 N/A C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

Processes

C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe

"C:\Users\Admin\AppData\Local\Temp\VirusShare_f00eebcf45aa28251dabff693cb87db0.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /C cd C:\Users\Admin\AppData\Roaming\ &&ren *.zgy *.exe && exit

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\MTemp104.vbs"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

Network

Country Destination Domain Proto
FR 87.98.160.242:1515 tcp

Files

memory/5000-0-0x0000000073611000-0x0000000073612000-memory.dmp

memory/5000-1-0x0000000073610000-0x0000000073BC0000-memory.dmp

memory/5000-2-0x0000000073610000-0x0000000073BC0000-memory.dmp

C:\Users\Admin\AppData\Roaming\LabelRouge.zgy

MD5 f00eebcf45aa28251dabff693cb87db0
SHA1 21c73fc96842f12af0eb2e159434a6d89894a3ea
SHA256 0f4a0735bd83b54dc178a0777fab05e566d9e310c7e9b27477fffcde9e16ead0
SHA512 e0c0a292027791a97362e98c78ded5c4990d53b386581e1652977382e25cdb2907b8b417810e920493c1fe6910a326915175ad019c845cc54bd54a04d8b224bf

C:\Users\Admin\AppData\Local\Temp\MTemp104.vbs

MD5 5b49b07da8f8d67d912637219fed686c
SHA1 b9c74fb41c58cf0ccedf592964d3830be94ba91f
SHA256 c9d11bae2d34f6da5ce6085fbf9cfc20e73f4d56917e9e334fa73b602729950a
SHA512 a4d008c6444a8b683724af6e328ddd12c7bc0627562d48cb1c8697a04a99ff23ddc971d1cb51e7d52cca7c8193ca21feec97ade1d12434f56017e13a751fe0fa

memory/3868-9-0x0000000000400000-0x00000000004B2000-memory.dmp

memory/3868-10-0x0000000000400000-0x00000000004B2000-memory.dmp

memory/3868-11-0x0000000000400000-0x00000000004B2000-memory.dmp

memory/3868-12-0x0000000000400000-0x00000000004B2000-memory.dmp

memory/3868-13-0x0000000000400000-0x00000000004B2000-memory.dmp

memory/3868-14-0x0000000000400000-0x00000000004B2000-memory.dmp