darkcomet | 26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96

General

Target

26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Size

500KB
MD5

cb33d7a4fc859295229b02ae68616319
SHA1

cf50c142931029523b9d9e324007ddc76854ce1a
SHA256

26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96
SHA512

82d0bf6aa5ded0e508a9c8e899fd1e21a117a4123d900a65c30244de2de3cccaa8304dcb288df75da256e29becd83d0f4ad7c828c2f1b3aef53167f962cbc695
SSDEEP

12288:8enj9tNRgj7lKLVajxrzBViuU+EoSK5VmuZvYmbV:jfaBKaRljX5VmIQI

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

millanman.no-ip.org:200

Mutex

DC_MUTEX-1K6MQ48

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
lBPaol2uFc1q
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:

26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.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"	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe

Executes dropped EXE 2 IoCs

Processes:

msdcsc.exemsdcsc.exe

pid process

3764 msdcsc.exe
408 msdcsc.exe

pid	process
3764	msdcsc.exe
408	msdcsc.exe

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3292-134-0x0000000000400000-0x0000000000530000-memory.dmp	upx
behavioral2/memory/3292-135-0x0000000000400000-0x0000000000530000-memory.dmp	upx
behavioral2/memory/220-137-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/220-138-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/220-139-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/220-140-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/220-141-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3292-142-0x0000000000400000-0x0000000000530000-memory.dmp	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral2/memory/3764-148-0x0000000000400000-0x0000000000530000-memory.dmp	upx
behavioral2/memory/220-149-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3764-154-0x0000000000400000-0x0000000000530000-memory.dmp	upx
behavioral2/memory/408-155-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/408-156-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral2/memory/408-158-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/408-159-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/408-160-0x0000000000400000-0x00000000004B7000-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:

26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exemsdcsc.exe

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\\Documents\\MSDCSC\\msdcsc.exe"	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exemsdcsc.exe

description	pid	process	target process
PID 3292 set thread context of 220	3292	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
PID 3764 set thread context of 408	3764	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:

26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeSecurityPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeTakeOwnershipPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeLoadDriverPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeSystemProfilePrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeSystemtimePrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeProfSingleProcessPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeIncBasePriorityPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeCreatePagefilePrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeBackupPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeRestorePrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeShutdownPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeDebugPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeSystemEnvironmentPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeChangeNotifyPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeRemoteShutdownPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeUndockPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeManageVolumePrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeImpersonatePrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeCreateGlobalPrivilege	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: 33	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: 34	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: 35	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: 36	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
Token: SeIncreaseQuotaPrivilege	408	msdcsc.exe
Token: SeSecurityPrivilege	408	msdcsc.exe
Token: SeTakeOwnershipPrivilege	408	msdcsc.exe
Token: SeLoadDriverPrivilege	408	msdcsc.exe
Token: SeSystemProfilePrivilege	408	msdcsc.exe
Token: SeSystemtimePrivilege	408	msdcsc.exe
Token: SeProfSingleProcessPrivilege	408	msdcsc.exe
Token: SeIncBasePriorityPrivilege	408	msdcsc.exe
Token: SeCreatePagefilePrivilege	408	msdcsc.exe
Token: SeBackupPrivilege	408	msdcsc.exe
Token: SeRestorePrivilege	408	msdcsc.exe
Token: SeShutdownPrivilege	408	msdcsc.exe
Token: SeDebugPrivilege	408	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	408	msdcsc.exe
Token: SeChangeNotifyPrivilege	408	msdcsc.exe
Token: SeRemoteShutdownPrivilege	408	msdcsc.exe
Token: SeUndockPrivilege	408	msdcsc.exe
Token: SeManageVolumePrivilege	408	msdcsc.exe
Token: SeImpersonatePrivilege	408	msdcsc.exe
Token: SeCreateGlobalPrivilege	408	msdcsc.exe
Token: 33	408	msdcsc.exe
Token: 34	408	msdcsc.exe
Token: 35	408	msdcsc.exe
Token: 36	408	msdcsc.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exemsdcsc.exemsdcsc.exe

pid process

3292 26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
3764 msdcsc.exe
408 msdcsc.exe

pid	process
3292	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
3764	msdcsc.exe
408	msdcsc.exe

Suspicious use of WriteProcessMemory 41 IoCs

Processes:

26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exemsdcsc.exemsdcsc.exe

description	pid	process	target process
PID 3292 wrote to memory of 220	3292	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
PID 3292 wrote to memory of 220	3292	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
PID 3292 wrote to memory of 220	3292	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
PID 3292 wrote to memory of 220	3292	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
PID 3292 wrote to memory of 220	3292	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
PID 3292 wrote to memory of 220	3292	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
PID 3292 wrote to memory of 220	3292	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
PID 3292 wrote to memory of 220	3292	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
PID 220 wrote to memory of 3764	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	msdcsc.exe
PID 220 wrote to memory of 3764	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	msdcsc.exe
PID 220 wrote to memory of 3764	220	26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe	msdcsc.exe
PID 3764 wrote to memory of 408	3764	msdcsc.exe	msdcsc.exe
PID 3764 wrote to memory of 408	3764	msdcsc.exe	msdcsc.exe
PID 3764 wrote to memory of 408	3764	msdcsc.exe	msdcsc.exe
PID 3764 wrote to memory of 408	3764	msdcsc.exe	msdcsc.exe
PID 3764 wrote to memory of 408	3764	msdcsc.exe	msdcsc.exe
PID 3764 wrote to memory of 408	3764	msdcsc.exe	msdcsc.exe
PID 3764 wrote to memory of 408	3764	msdcsc.exe	msdcsc.exe
PID 3764 wrote to memory of 408	3764	msdcsc.exe	msdcsc.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe
PID 408 wrote to memory of 3484	408	msdcsc.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
"C:\Users\Admin\AppData\Local\Temp\26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3292

C:\Users\Admin\AppData\Local\Temp\26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe
"C:\Users\Admin\AppData\Local\Temp\26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96.exe"
2⤵
- 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:220

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3764

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:408

C:\Windows\SysWOW64\notepad.exe
notepad
5⤵
PID:3484

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
500KB

MD5
cb33d7a4fc859295229b02ae68616319

SHA1
cf50c142931029523b9d9e324007ddc76854ce1a

SHA256
26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96

SHA512
82d0bf6aa5ded0e508a9c8e899fd1e21a117a4123d900a65c30244de2de3cccaa8304dcb288df75da256e29becd83d0f4ad7c828c2f1b3aef53167f962cbc695

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
500KB

MD5
cb33d7a4fc859295229b02ae68616319

SHA1
cf50c142931029523b9d9e324007ddc76854ce1a

SHA256
26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96

SHA512
82d0bf6aa5ded0e508a9c8e899fd1e21a117a4123d900a65c30244de2de3cccaa8304dcb288df75da256e29becd83d0f4ad7c828c2f1b3aef53167f962cbc695

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
500KB

MD5
cb33d7a4fc859295229b02ae68616319

SHA1
cf50c142931029523b9d9e324007ddc76854ce1a

SHA256
26b3f94f9365165f82b1ee005a0edd82d2a17736c51929d112b2bc93eda83d96

SHA512
82d0bf6aa5ded0e508a9c8e899fd1e21a117a4123d900a65c30244de2de3cccaa8304dcb288df75da256e29becd83d0f4ad7c828c2f1b3aef53167f962cbc695

Download Submit
memory/220-139-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/220-140-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/220-141-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/220-138-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/220-137-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/220-136-0x0000000000000000-mapping.dmp

Download
memory/220-149-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/408-155-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/408-160-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/408-159-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/408-158-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/408-150-0x0000000000000000-mapping.dmp

Download
memory/408-156-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3292-142-0x0000000000400000-0x0000000000530000-memory.dmp

Filesize
1.2MB

Download
memory/3292-135-0x0000000000400000-0x0000000000530000-memory.dmp

Filesize
1.2MB

Download
memory/3292-134-0x0000000000400000-0x0000000000530000-memory.dmp

Filesize
1.2MB

Download
memory/3484-157-0x0000000000000000-mapping.dmp

Download
memory/3764-154-0x0000000000400000-0x0000000000530000-memory.dmp

Filesize
1.2MB

Download
memory/3764-148-0x0000000000400000-0x0000000000530000-memory.dmp

Filesize
1.2MB

Download
memory/3764-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads