darkcomet | fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8

General

Target

fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Size

690KB
MD5

8c3d9ce08799aa0c07ceb6b50f626d28
SHA1

3d82bce6926365c9c19cb5bad5a2c8e155b6a171
SHA256

fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8
SHA512

5e39cb5728c39930871cef521c7656ee491f26e60cc8243b7665da501dd2a8a1e40245198011a23daacefa771e51e1f99d6914e60564fdec488483ebbb6acf21

Score

10^/10

darkcomet sazan persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

seximamun.duckdns.org:1604

Mutex

DC_MUTEX-CGHFZD9

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
PaiZlau2UT6i
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:

fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.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"	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3488 msdcsc.exe

pid	process
3488	msdcsc.exe

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:

fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exemsdcsc.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 3488 set thread context of 3220 3488 msdcsc.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 3488 set thread context of 3220	3488	msdcsc.exe	iexplore.exe

Modifies registry class 1 IoCs

Processes:

fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeSecurityPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeTakeOwnershipPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeLoadDriverPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeSystemProfilePrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeSystemtimePrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeProfSingleProcessPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeIncBasePriorityPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeCreatePagefilePrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeBackupPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeRestorePrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeShutdownPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeDebugPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeSystemEnvironmentPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeChangeNotifyPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeRemoteShutdownPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeUndockPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeManageVolumePrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeImpersonatePrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeCreateGlobalPrivilege	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: 33	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: 34	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: 35	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: 36	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
Token: SeIncreaseQuotaPrivilege	3488	msdcsc.exe
Token: SeSecurityPrivilege	3488	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3488	msdcsc.exe
Token: SeLoadDriverPrivilege	3488	msdcsc.exe
Token: SeSystemProfilePrivilege	3488	msdcsc.exe
Token: SeSystemtimePrivilege	3488	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3488	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3488	msdcsc.exe
Token: SeCreatePagefilePrivilege	3488	msdcsc.exe
Token: SeBackupPrivilege	3488	msdcsc.exe
Token: SeRestorePrivilege	3488	msdcsc.exe
Token: SeShutdownPrivilege	3488	msdcsc.exe
Token: SeDebugPrivilege	3488	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3488	msdcsc.exe
Token: SeChangeNotifyPrivilege	3488	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3488	msdcsc.exe
Token: SeUndockPrivilege	3488	msdcsc.exe
Token: SeManageVolumePrivilege	3488	msdcsc.exe
Token: SeImpersonatePrivilege	3488	msdcsc.exe
Token: SeCreateGlobalPrivilege	3488	msdcsc.exe
Token: 33	3488	msdcsc.exe
Token: 34	3488	msdcsc.exe
Token: 35	3488	msdcsc.exe
Token: 36	3488	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	3220	iexplore.exe
Token: SeSecurityPrivilege	3220	iexplore.exe
Token: SeTakeOwnershipPrivilege	3220	iexplore.exe
Token: SeLoadDriverPrivilege	3220	iexplore.exe
Token: SeSystemProfilePrivilege	3220	iexplore.exe
Token: SeSystemtimePrivilege	3220	iexplore.exe
Token: SeProfSingleProcessPrivilege	3220	iexplore.exe
Token: SeIncBasePriorityPrivilege	3220	iexplore.exe
Token: SeCreatePagefilePrivilege	3220	iexplore.exe
Token: SeBackupPrivilege	3220	iexplore.exe
Token: SeRestorePrivilege	3220	iexplore.exe
Token: SeShutdownPrivilege	3220	iexplore.exe
Token: SeDebugPrivilege	3220	iexplore.exe
Token: SeSystemEnvironmentPrivilege	3220	iexplore.exe
Token: SeChangeNotifyPrivilege	3220	iexplore.exe
Token: SeRemoteShutdownPrivilege	3220	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

3220 iexplore.exe

pid	process
3220	iexplore.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exemsdcsc.exe

description	pid	process	target process
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3036	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	notepad.exe
PID 4848 wrote to memory of 3488	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	msdcsc.exe
PID 4848 wrote to memory of 3488	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	msdcsc.exe
PID 4848 wrote to memory of 3488	4848	fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe	msdcsc.exe
PID 3488 wrote to memory of 3220	3488	msdcsc.exe	iexplore.exe
PID 3488 wrote to memory of 3220	3488	msdcsc.exe	iexplore.exe
PID 3488 wrote to memory of 3220	3488	msdcsc.exe	iexplore.exe
PID 3488 wrote to memory of 3220	3488	msdcsc.exe	iexplore.exe
PID 3488 wrote to memory of 3220	3488	msdcsc.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.exe
"C:\Users\Admin\AppData\Local\Temp\fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8.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:4848

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
PID:3036

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 SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3488

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3220

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
690KB

MD5
8c3d9ce08799aa0c07ceb6b50f626d28

SHA1
3d82bce6926365c9c19cb5bad5a2c8e155b6a171

SHA256
fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8

SHA512
5e39cb5728c39930871cef521c7656ee491f26e60cc8243b7665da501dd2a8a1e40245198011a23daacefa771e51e1f99d6914e60564fdec488483ebbb6acf21

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
8c3d9ce08799aa0c07ceb6b50f626d28

SHA1
3d82bce6926365c9c19cb5bad5a2c8e155b6a171

SHA256
fc90b85e15d5d314d4a0c4a7f73e7eff48390720ad8b3c25de51b82296d97ff8

SHA512
5e39cb5728c39930871cef521c7656ee491f26e60cc8243b7665da501dd2a8a1e40245198011a23daacefa771e51e1f99d6914e60564fdec488483ebbb6acf21

Download Submit
memory/3036-130-0x0000000000000000-mapping.dmp

Download
memory/3488-131-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads