darkcomet | 571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e

General

Target

571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Size

349KB
MD5

6d2706ffb3b1c6efd5594e1a2ff787b0
SHA1

b819a1b540b2f21c1ae6fcb7c925a51e445f3b0a
SHA256

571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e
SHA512

968c98c388a3fffe0a8a89f496c9fafb59419440d0f4ae49d5ccb1ceb3f4611c3e6cd327258ba47cfc55d3620aafc62d0b7bc889a1712c63dda227025fa4c653
SSDEEP

6144:wcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37d3I2RwplSZkOiu9PZ/p:wcW7KEZlPzCy37xRPNVR

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

rabdarcrab.no-ip.biz:1604

Mutex

DC_MUTEX-12PKHNW

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
yVkohe6HvLBv
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

Processes:

571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1440 msdcsc.exe

pid	process
1440	msdcsc.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4920-132-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral2/memory/1440-136-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/4920-137-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/1440-138-0x0000000000400000-0x00000000004E8000-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

Processes:

571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

Processes:

571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeSecurityPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeTakeOwnershipPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeLoadDriverPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeSystemProfilePrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeSystemtimePrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeProfSingleProcessPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeIncBasePriorityPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeCreatePagefilePrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeBackupPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeRestorePrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeShutdownPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeDebugPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeSystemEnvironmentPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeChangeNotifyPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeRemoteShutdownPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeUndockPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeManageVolumePrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeImpersonatePrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeCreateGlobalPrivilege	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: 33	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: 34	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: 35	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: 36	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
Token: SeIncreaseQuotaPrivilege	1440	msdcsc.exe
Token: SeSecurityPrivilege	1440	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1440	msdcsc.exe
Token: SeLoadDriverPrivilege	1440	msdcsc.exe
Token: SeSystemProfilePrivilege	1440	msdcsc.exe
Token: SeSystemtimePrivilege	1440	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1440	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1440	msdcsc.exe
Token: SeCreatePagefilePrivilege	1440	msdcsc.exe
Token: SeBackupPrivilege	1440	msdcsc.exe
Token: SeRestorePrivilege	1440	msdcsc.exe
Token: SeShutdownPrivilege	1440	msdcsc.exe
Token: SeDebugPrivilege	1440	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1440	msdcsc.exe
Token: SeChangeNotifyPrivilege	1440	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1440	msdcsc.exe
Token: SeUndockPrivilege	1440	msdcsc.exe
Token: SeManageVolumePrivilege	1440	msdcsc.exe
Token: SeImpersonatePrivilege	1440	msdcsc.exe
Token: SeCreateGlobalPrivilege	1440	msdcsc.exe
Token: 33	1440	msdcsc.exe
Token: 34	1440	msdcsc.exe
Token: 35	1440	msdcsc.exe
Token: 36	1440	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1440 msdcsc.exe

pid	process
1440	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe

description	pid	process	target process
PID 4920 wrote to memory of 1440	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe	msdcsc.exe
PID 4920 wrote to memory of 1440	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe	msdcsc.exe
PID 4920 wrote to memory of 1440	4920	571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe
"C:\Users\Admin\AppData\Local\Temp\571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4920

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1440

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
349KB

MD5
6d2706ffb3b1c6efd5594e1a2ff787b0

SHA1
b819a1b540b2f21c1ae6fcb7c925a51e445f3b0a

SHA256
571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e

SHA512
968c98c388a3fffe0a8a89f496c9fafb59419440d0f4ae49d5ccb1ceb3f4611c3e6cd327258ba47cfc55d3620aafc62d0b7bc889a1712c63dda227025fa4c653

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
349KB

MD5
6d2706ffb3b1c6efd5594e1a2ff787b0

SHA1
b819a1b540b2f21c1ae6fcb7c925a51e445f3b0a

SHA256
571eaac9e5f7789fa2fccea6e04f6c82e5e2cd86246d9cba7ab497e03f424e9e

SHA512
968c98c388a3fffe0a8a89f496c9fafb59419440d0f4ae49d5ccb1ceb3f4611c3e6cd327258ba47cfc55d3620aafc62d0b7bc889a1712c63dda227025fa4c653

Download Submit
memory/1440-133-0x0000000000000000-mapping.dmp

Download
memory/1440-136-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1440-138-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/4920-132-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/4920-137-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads