darkcomet | 176948cbfcd805e730c0b68c186ff952b77b880fe58fff3687e9d841269fe0a4

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
26/02/2025, 12:56

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General

Target

JaffaCakes118_261888bc3e3b1b2c4d3882c6e34f0e03.exe
Size

675KB
MD5

261888bc3e3b1b2c4d3882c6e34f0e03
SHA1

6b02fe137ad42738cbe596bf01042673f9e64f01
SHA256

176948cbfcd805e730c0b68c186ff952b77b880fe58fff3687e9d841269fe0a4
SHA512

59e74e3b41897faf3b997be0ae8c1e770fdfc31842e6324304a971c2cd77768a341b261c2ef1d5e1862c2b072942817782de91f8379e95fb01496391ef2a42fb
SSDEEP

12288:X4JcW7KEZlPzCy37EDnnLbP38s0nnTiriVPW:XqKiRzC0SLbURerwPW

Score

10^/10

darkcomet sieunannhan discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Sieunannhan

vudesign.no-ip.org:999

127.0.0.1:999

192.168.1.2:999

113.166.14.123:999

Mutex

DC_MUTEX-TCCZYLM

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
ULrh37QQmkDy
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

rc4.plain

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

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\\Documents\\MSDCSC\\msdcsc.exe"	CUA E NE.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-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	JaffaCakes118_261888bc3e3b1b2c4d3882c6e34f0e03.exe
Key value queried	\REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	CUA E NE.EXE

Executes dropped EXE 2 IoCs

pid	Process
3792	CUA E NE.EXE
1808	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	CUA E NE.EXE

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023c1b-4.dat	upx
behavioral2/memory/3792-12-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/1808-75-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/3792-77-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/1808-78-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/1808-82-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/1808-84-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/1808-86-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/1808-88-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/1808-91-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/1808-93-0x0000000000400000-0x00000000004E8000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_261888bc3e3b1b2c4d3882c6e34f0e03.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CUA E NE.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Modifies registry class 1 IoCs

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1808	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3792	CUA E NE.EXE
Token: SeSecurityPrivilege	3792	CUA E NE.EXE
Token: SeTakeOwnershipPrivilege	3792	CUA E NE.EXE
Token: SeLoadDriverPrivilege	3792	CUA E NE.EXE
Token: SeSystemProfilePrivilege	3792	CUA E NE.EXE
Token: SeSystemtimePrivilege	3792	CUA E NE.EXE
Token: SeProfSingleProcessPrivilege	3792	CUA E NE.EXE
Token: SeIncBasePriorityPrivilege	3792	CUA E NE.EXE
Token: SeCreatePagefilePrivilege	3792	CUA E NE.EXE
Token: SeBackupPrivilege	3792	CUA E NE.EXE
Token: SeRestorePrivilege	3792	CUA E NE.EXE
Token: SeShutdownPrivilege	3792	CUA E NE.EXE
Token: SeDebugPrivilege	3792	CUA E NE.EXE
Token: SeSystemEnvironmentPrivilege	3792	CUA E NE.EXE
Token: SeChangeNotifyPrivilege	3792	CUA E NE.EXE
Token: SeRemoteShutdownPrivilege	3792	CUA E NE.EXE
Token: SeUndockPrivilege	3792	CUA E NE.EXE
Token: SeManageVolumePrivilege	3792	CUA E NE.EXE
Token: SeImpersonatePrivilege	3792	CUA E NE.EXE
Token: SeCreateGlobalPrivilege	3792	CUA E NE.EXE
Token: 33	3792	CUA E NE.EXE
Token: 34	3792	CUA E NE.EXE
Token: 35	3792	CUA E NE.EXE
Token: 36	3792	CUA E NE.EXE
Token: SeIncreaseQuotaPrivilege	1808	msdcsc.exe
Token: SeSecurityPrivilege	1808	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1808	msdcsc.exe
Token: SeLoadDriverPrivilege	1808	msdcsc.exe
Token: SeSystemProfilePrivilege	1808	msdcsc.exe
Token: SeSystemtimePrivilege	1808	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1808	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1808	msdcsc.exe
Token: SeCreatePagefilePrivilege	1808	msdcsc.exe
Token: SeBackupPrivilege	1808	msdcsc.exe
Token: SeRestorePrivilege	1808	msdcsc.exe
Token: SeShutdownPrivilege	1808	msdcsc.exe
Token: SeDebugPrivilege	1808	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1808	msdcsc.exe
Token: SeChangeNotifyPrivilege	1808	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1808	msdcsc.exe
Token: SeUndockPrivilege	1808	msdcsc.exe
Token: SeManageVolumePrivilege	1808	msdcsc.exe
Token: SeImpersonatePrivilege	1808	msdcsc.exe
Token: SeCreateGlobalPrivilege	1808	msdcsc.exe
Token: 33	1808	msdcsc.exe
Token: 34	1808	msdcsc.exe
Token: 35	1808	msdcsc.exe
Token: 36	1808	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1808	msdcsc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 3792	3108	JaffaCakes118_261888bc3e3b1b2c4d3882c6e34f0e03.exe	86
PID 3108 wrote to memory of 3792	3108	JaffaCakes118_261888bc3e3b1b2c4d3882c6e34f0e03.exe	86
PID 3108 wrote to memory of 3792	3108	JaffaCakes118_261888bc3e3b1b2c4d3882c6e34f0e03.exe	86
PID 3792 wrote to memory of 1808	3792	CUA E NE.EXE	89
PID 3792 wrote to memory of 1808	3792	CUA E NE.EXE	89
PID 3792 wrote to memory of 1808	3792	CUA E NE.EXE	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_261888bc3e3b1b2c4d3882c6e34f0e03.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_261888bc3e3b1b2c4d3882c6e34f0e03.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3108
- C:\Users\Admin\AppData\Local\Temp\CUA E NE.EXE
  "C:\Users\Admin\AppData\Local\Temp\CUA E NE.EXE"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3792
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CUA E NE.EXE

Filesize
349KB

MD5
f8d2db4e92dc519e3de9ae6e45dad82a

SHA1
7185b1ef3b3d2ba4b9fda16fb733289373356254

SHA256
5d8a7b068832213b4db815171f5fbcd580b38a022860e3417149f4b1fe03794f

SHA512
d328a5a72681dcdb9b212d681656d6704a92cbf64c9ed37227a129823ceb07d0c643043dc6a1f2e65988d691dcd13fd8bc28ecb3881e49bd2b7a98cefd25d751

Download Submit
memory/1808-78-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1808-75-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1808-76-0x00000000009A0000-0x00000000009A1000-memory.dmp

Filesize
4KB

Download
memory/1808-80-0x00000000009A0000-0x00000000009A1000-memory.dmp

Filesize
4KB

Download
memory/1808-82-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1808-84-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1808-86-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1808-88-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1808-91-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1808-93-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/3792-13-0x0000000002410000-0x0000000002411000-memory.dmp

Filesize
4KB

Download
memory/3792-77-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/3792-12-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads