darkcomet | 22681287fe40149600120243ba97cadc242600d8fb9190adf98efccbf89c064b

Analysis

max time kernel
213s
max time network
248s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01-10-2022 21:44

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General

Target

22681287fe40149600120243ba97cadc242600d8fb9190adf98efccbf89c064b.exe
Size

753KB
MD5

6164b89fb1038bc271cad23b75b8bcda
SHA1

9e8a1becd54a69adc7367e0c98cd33041f5e1ed5
SHA256

22681287fe40149600120243ba97cadc242600d8fb9190adf98efccbf89c064b
SHA512

7766a0c3ea22e7d4a440e9a687c6ee2f0e200035ce54cbd3ebe51dca1714dac74b1409ad7991965072b30f35d8c8ebc9a7f00d2acd8cd1c4f5cef7fa6ef680c1
SSDEEP

12288:K4bUx79HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h:KJZ1xuVVjfFoynPaVBUR8f+kN10EB

Score

10^/10

darkcomet new persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

new

serverexe.no-ip.org:5112

Mutex

DC_MUTEX-79PF79N

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
oYlexrzdlPwE
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	TEST.EXE

Executes dropped EXE 2 IoCs

pid	Process
1708	TEST.EXE
876	msdcsc.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	TEST.EXE
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	22681287fe40149600120243ba97cadc242600d8fb9190adf98efccbf89c064b.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	TEST.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 876 set thread context of 5116	876	msdcsc.exe	82

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	TEST.EXE

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1708	TEST.EXE
Token: SeSecurityPrivilege	1708	TEST.EXE
Token: SeTakeOwnershipPrivilege	1708	TEST.EXE
Token: SeLoadDriverPrivilege	1708	TEST.EXE
Token: SeSystemProfilePrivilege	1708	TEST.EXE
Token: SeSystemtimePrivilege	1708	TEST.EXE
Token: SeProfSingleProcessPrivilege	1708	TEST.EXE
Token: SeIncBasePriorityPrivilege	1708	TEST.EXE
Token: SeCreatePagefilePrivilege	1708	TEST.EXE
Token: SeBackupPrivilege	1708	TEST.EXE
Token: SeRestorePrivilege	1708	TEST.EXE
Token: SeShutdownPrivilege	1708	TEST.EXE
Token: SeDebugPrivilege	1708	TEST.EXE
Token: SeSystemEnvironmentPrivilege	1708	TEST.EXE
Token: SeChangeNotifyPrivilege	1708	TEST.EXE
Token: SeRemoteShutdownPrivilege	1708	TEST.EXE
Token: SeUndockPrivilege	1708	TEST.EXE
Token: SeManageVolumePrivilege	1708	TEST.EXE
Token: SeImpersonatePrivilege	1708	TEST.EXE
Token: SeCreateGlobalPrivilege	1708	TEST.EXE
Token: 33	1708	TEST.EXE
Token: 34	1708	TEST.EXE
Token: 35	1708	TEST.EXE
Token: 36	1708	TEST.EXE
Token: SeIncreaseQuotaPrivilege	876	msdcsc.exe
Token: SeSecurityPrivilege	876	msdcsc.exe
Token: SeTakeOwnershipPrivilege	876	msdcsc.exe
Token: SeLoadDriverPrivilege	876	msdcsc.exe
Token: SeSystemProfilePrivilege	876	msdcsc.exe
Token: SeSystemtimePrivilege	876	msdcsc.exe
Token: SeProfSingleProcessPrivilege	876	msdcsc.exe
Token: SeIncBasePriorityPrivilege	876	msdcsc.exe
Token: SeCreatePagefilePrivilege	876	msdcsc.exe
Token: SeBackupPrivilege	876	msdcsc.exe
Token: SeRestorePrivilege	876	msdcsc.exe
Token: SeShutdownPrivilege	876	msdcsc.exe
Token: SeDebugPrivilege	876	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	876	msdcsc.exe
Token: SeChangeNotifyPrivilege	876	msdcsc.exe
Token: SeRemoteShutdownPrivilege	876	msdcsc.exe
Token: SeUndockPrivilege	876	msdcsc.exe
Token: SeManageVolumePrivilege	876	msdcsc.exe
Token: SeImpersonatePrivilege	876	msdcsc.exe
Token: SeCreateGlobalPrivilege	876	msdcsc.exe
Token: 33	876	msdcsc.exe
Token: 34	876	msdcsc.exe
Token: 35	876	msdcsc.exe
Token: 36	876	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	5116	iexplore.exe
Token: SeSecurityPrivilege	5116	iexplore.exe
Token: SeTakeOwnershipPrivilege	5116	iexplore.exe
Token: SeLoadDriverPrivilege	5116	iexplore.exe
Token: SeSystemProfilePrivilege	5116	iexplore.exe
Token: SeSystemtimePrivilege	5116	iexplore.exe
Token: SeProfSingleProcessPrivilege	5116	iexplore.exe
Token: SeIncBasePriorityPrivilege	5116	iexplore.exe
Token: SeCreatePagefilePrivilege	5116	iexplore.exe
Token: SeBackupPrivilege	5116	iexplore.exe
Token: SeRestorePrivilege	5116	iexplore.exe
Token: SeShutdownPrivilege	5116	iexplore.exe
Token: SeDebugPrivilege	5116	iexplore.exe
Token: SeSystemEnvironmentPrivilege	5116	iexplore.exe
Token: SeChangeNotifyPrivilege	5116	iexplore.exe
Token: SeRemoteShutdownPrivilege	5116	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5116	iexplore.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1776 wrote to memory of 1708	1776	22681287fe40149600120243ba97cadc242600d8fb9190adf98efccbf89c064b.exe	80
PID 1776 wrote to memory of 1708	1776	22681287fe40149600120243ba97cadc242600d8fb9190adf98efccbf89c064b.exe	80
PID 1776 wrote to memory of 1708	1776	22681287fe40149600120243ba97cadc242600d8fb9190adf98efccbf89c064b.exe	80
PID 1708 wrote to memory of 876	1708	TEST.EXE	81
PID 1708 wrote to memory of 876	1708	TEST.EXE	81
PID 1708 wrote to memory of 876	1708	TEST.EXE	81
PID 876 wrote to memory of 5116	876	msdcsc.exe	82
PID 876 wrote to memory of 5116	876	msdcsc.exe	82
PID 876 wrote to memory of 5116	876	msdcsc.exe	82
PID 876 wrote to memory of 5116	876	msdcsc.exe	82
PID 876 wrote to memory of 5116	876	msdcsc.exe	82

C:\Users\Admin\AppData\Local\Temp\22681287fe40149600120243ba97cadc242600d8fb9190adf98efccbf89c064b.exe
"C:\Users\Admin\AppData\Local\Temp\22681287fe40149600120243ba97cadc242600d8fb9190adf98efccbf89c064b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Users\Admin\AppData\Local\Temp\TEST.EXE
  "C:\Users\Admin\AppData\Local\Temp\TEST.EXE"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1708
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:876
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      Adds Run key to start application
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:5116

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
3432fe314b8cb640b283998d08f9c71a

SHA1
d4b6a3c0757dddcb1c4b3798ef1ca60860861d13

SHA256
cdf9667cc91e01e213236ece900c9ff8074b4b0d784b8cd0fb188ecf2b7d7551

SHA512
2aee193cb4b1675248867cc15b03d9d6c429ffa18097493849ec3d06c0ebd0043a7b6869223192226accd11b7717320e024593111af49ebf94d2a16133fde398

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

Filesize
658KB

MD5
3432fe314b8cb640b283998d08f9c71a

SHA1
d4b6a3c0757dddcb1c4b3798ef1ca60860861d13

SHA256
cdf9667cc91e01e213236ece900c9ff8074b4b0d784b8cd0fb188ecf2b7d7551

SHA512
2aee193cb4b1675248867cc15b03d9d6c429ffa18097493849ec3d06c0ebd0043a7b6869223192226accd11b7717320e024593111af49ebf94d2a16133fde398

Download Submit
C:\Users\Admin\AppData\Local\Temp\TEST.EXE

Filesize
658KB

MD5
3432fe314b8cb640b283998d08f9c71a

SHA1
d4b6a3c0757dddcb1c4b3798ef1ca60860861d13

SHA256
cdf9667cc91e01e213236ece900c9ff8074b4b0d784b8cd0fb188ecf2b7d7551

SHA512
2aee193cb4b1675248867cc15b03d9d6c429ffa18097493849ec3d06c0ebd0043a7b6869223192226accd11b7717320e024593111af49ebf94d2a16133fde398

Download Submit
C:\Users\Admin\AppData\Local\Temp\TEST.EXE

Filesize
658KB

MD5
3432fe314b8cb640b283998d08f9c71a

SHA1
d4b6a3c0757dddcb1c4b3798ef1ca60860861d13

SHA256
cdf9667cc91e01e213236ece900c9ff8074b4b0d784b8cd0fb188ecf2b7d7551

SHA512
2aee193cb4b1675248867cc15b03d9d6c429ffa18097493849ec3d06c0ebd0043a7b6869223192226accd11b7717320e024593111af49ebf94d2a16133fde398

Download Submit
memory/876-135-0x0000000000000000-mapping.dmp

Download
memory/1708-132-0x0000000000000000-mapping.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads