darkcomet | ecda5d76046ddaac6fb95ed2244c214a9054bad3c96a0c43766f45b73226b5b4

General

Target

ecda5d76046ddaac6fb95ed2244c214a9054bad3c96a0c43766f45b73226b5b4.exe
Size

748KB
MD5

54be4a8bb0a89e70428bcaf866d9ec27
SHA1

cd8082c20accf6d04be713310572471c471dde25
SHA256

ecda5d76046ddaac6fb95ed2244c214a9054bad3c96a0c43766f45b73226b5b4
SHA512

e18be110796fb6e2a4751342d4f1916d8e317c1b1497d2f0966e21643eccc44a287d22da06c8ee0baf64b474843ab506e3075bc04c5f178fa76dd3f759071f97
SSDEEP

12288:EdTYVn4UghggZKHnxniLDGqEf37oFZV0tWaIpgKCTebPEVBxkVkCkTCxtBd:EScgdxiL5Ef37aV0tWaigK+uEVLVCk0d

Score

10^/10

darkcomet toontown membership generator persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Toontown Membership Generator

C2

powermaniac.no-ip.org:100

Mutex

DC_MUTEX-PD9KZXK

Attributes

gencode
HkjBUXctdV6u
install
false
offline_keylogger
true
persistence
false

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Executes dropped EXE 2 IoCs

pid	Process
4456	winini.exe
832	cvtres.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/832-139-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/832-142-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/832-144-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/832-146-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/832-147-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/832-148-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/832-149-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	ecda5d76046ddaac6fb95ed2244c214a9054bad3c96a0c43766f45b73226b5b4.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\eviL swodniW = "C:\\Users\\Admin\\AppData\\Local\\Temp\\winini.exe"	winini.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4456 set thread context of 832	4456	winini.exe	83

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	4456	winini.exe
Token: SeIncreaseQuotaPrivilege	832	cvtres.exe
Token: SeSecurityPrivilege	832	cvtres.exe
Token: SeTakeOwnershipPrivilege	832	cvtres.exe
Token: SeLoadDriverPrivilege	832	cvtres.exe
Token: SeSystemProfilePrivilege	832	cvtres.exe
Token: SeSystemtimePrivilege	832	cvtres.exe
Token: SeProfSingleProcessPrivilege	832	cvtres.exe
Token: SeIncBasePriorityPrivilege	832	cvtres.exe
Token: SeCreatePagefilePrivilege	832	cvtres.exe
Token: SeBackupPrivilege	832	cvtres.exe
Token: SeRestorePrivilege	832	cvtres.exe
Token: SeShutdownPrivilege	832	cvtres.exe
Token: SeDebugPrivilege	832	cvtres.exe
Token: SeSystemEnvironmentPrivilege	832	cvtres.exe
Token: SeChangeNotifyPrivilege	832	cvtres.exe
Token: SeRemoteShutdownPrivilege	832	cvtres.exe
Token: SeUndockPrivilege	832	cvtres.exe
Token: SeManageVolumePrivilege	832	cvtres.exe
Token: SeImpersonatePrivilege	832	cvtres.exe
Token: SeCreateGlobalPrivilege	832	cvtres.exe
Token: 33	832	cvtres.exe
Token: 34	832	cvtres.exe
Token: 35	832	cvtres.exe
Token: 36	832	cvtres.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
832	cvtres.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5076 wrote to memory of 4456	5076	ecda5d76046ddaac6fb95ed2244c214a9054bad3c96a0c43766f45b73226b5b4.exe	82
PID 5076 wrote to memory of 4456	5076	ecda5d76046ddaac6fb95ed2244c214a9054bad3c96a0c43766f45b73226b5b4.exe	82
PID 5076 wrote to memory of 4456	5076	ecda5d76046ddaac6fb95ed2244c214a9054bad3c96a0c43766f45b73226b5b4.exe	82
PID 4456 wrote to memory of 832	4456	winini.exe	83
PID 4456 wrote to memory of 832	4456	winini.exe	83
PID 4456 wrote to memory of 832	4456	winini.exe	83
PID 4456 wrote to memory of 832	4456	winini.exe	83
PID 4456 wrote to memory of 832	4456	winini.exe	83
PID 4456 wrote to memory of 832	4456	winini.exe	83
PID 4456 wrote to memory of 832	4456	winini.exe	83
PID 4456 wrote to memory of 832	4456	winini.exe	83

C:\Users\Admin\AppData\Local\Temp\ecda5d76046ddaac6fb95ed2244c214a9054bad3c96a0c43766f45b73226b5b4.exe
"C:\Users\Admin\AppData\Local\Temp\ecda5d76046ddaac6fb95ed2244c214a9054bad3c96a0c43766f45b73226b5b4.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5076
- C:\Users\Admin\AppData\Local\Temp\winini.exe
  "C:\Users\Admin\AppData\Local\Temp\winini.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4456
- - C:\Users\Admin\AppData\Local\Temp\cvtres.exe
    C:\Users\Admin\AppData\Local\Temp\cvtres.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:832

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\cvtres.exe

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

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

Filesize
484KB

MD5
909f9eac8216be8d6dada7ebea2faa56

SHA1
3aeb04c2e8e944208cb989d0f133974df2e63d7f

SHA256
9b92674fb23307cc0077fc2442cfc0b9e7d6b18a90102b656a15f0681369fb6b

SHA512
9c674c3066d3dcdf6897318b1a6d92a250a599ae5bb282b6bef5d524f6871f4b647a4527fdfe690b0ceb91cbf80b03733d97e1a45a9c557ce0cc1e7da36524ac

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

Filesize
484KB

MD5
909f9eac8216be8d6dada7ebea2faa56

SHA1
3aeb04c2e8e944208cb989d0f133974df2e63d7f

SHA256
9b92674fb23307cc0077fc2442cfc0b9e7d6b18a90102b656a15f0681369fb6b

SHA512
9c674c3066d3dcdf6897318b1a6d92a250a599ae5bb282b6bef5d524f6871f4b647a4527fdfe690b0ceb91cbf80b03733d97e1a45a9c557ce0cc1e7da36524ac

Download Submit
memory/832-144-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/832-138-0x0000000000000000-mapping.dmp

Download
memory/832-139-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/832-142-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/832-146-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/832-147-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/832-148-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/832-149-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4456-137-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/4456-133-0x0000000000000000-mapping.dmp

Download
memory/4456-143-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/5076-136-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/5076-132-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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