darkcomet | 6fda0fd3839b1877b2a675d09ec1438734131c881a5e2c00a18b487f18fae100

Analysis

max time kernel
148s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
24/03/2025, 02:38

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General

Target

JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Size

664KB
MD5

8854848a600589da4c3f738a8958ee62
SHA1

b47f082d3938fb97008518e8d1aedf12c34cac32
SHA256

6fda0fd3839b1877b2a675d09ec1438734131c881a5e2c00a18b487f18fae100
SHA512

9a1d0b4d395fd51081e47065e51e1555d7cbf08c2885b72d33594fa5f4ce2727bba0a5e66628d18733a3da9fae37d2dcf90eb8b8dd6fdc0d974adcb51886eb9e
SSDEEP

12288:F9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqRKyh:jAQ6Zx9cxTmOrucTIEFSpOGzh

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:1604

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
Windupdt\winupdate.exe
gencode
s�=04$chbreo
install
true
offline_keylogger
false
persistence
true
reg_key
winupdater

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:\\Windows\\system32\\Windupdt\\winupdate.exe"	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3218366390-1258052702-4267193707-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe"	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3218366390-1258052702-4267193707-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe"	notepad.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Windupdt\winupdate.exe	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\winupdate.exe	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\winupdate.exe	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3244 set thread context of 2640	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	87

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_8854848a600589da4c3f738a8958ee62.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Checks processor information in registry 2 TTPs 8 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeSecurityPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeTakeOwnershipPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeLoadDriverPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeSystemProfilePrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeSystemtimePrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeProfSingleProcessPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeIncBasePriorityPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeCreatePagefilePrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeBackupPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeRestorePrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeShutdownPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeDebugPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeSystemEnvironmentPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeChangeNotifyPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeRemoteShutdownPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeUndockPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeManageVolumePrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeImpersonatePrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeCreateGlobalPrivilege	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: 33	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: 34	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: 35	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: 36	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
Token: SeIncreaseQuotaPrivilege	2640	explorer.exe
Token: SeSecurityPrivilege	2640	explorer.exe
Token: SeTakeOwnershipPrivilege	2640	explorer.exe
Token: SeLoadDriverPrivilege	2640	explorer.exe
Token: SeSystemProfilePrivilege	2640	explorer.exe
Token: SeSystemtimePrivilege	2640	explorer.exe
Token: SeProfSingleProcessPrivilege	2640	explorer.exe
Token: SeIncBasePriorityPrivilege	2640	explorer.exe
Token: SeCreatePagefilePrivilege	2640	explorer.exe
Token: SeBackupPrivilege	2640	explorer.exe
Token: SeRestorePrivilege	2640	explorer.exe
Token: SeShutdownPrivilege	2640	explorer.exe
Token: SeDebugPrivilege	2640	explorer.exe
Token: SeSystemEnvironmentPrivilege	2640	explorer.exe
Token: SeChangeNotifyPrivilege	2640	explorer.exe
Token: SeRemoteShutdownPrivilege	2640	explorer.exe
Token: SeUndockPrivilege	2640	explorer.exe
Token: SeManageVolumePrivilege	2640	explorer.exe
Token: SeImpersonatePrivilege	2640	explorer.exe
Token: SeCreateGlobalPrivilege	2640	explorer.exe
Token: 33	2640	explorer.exe
Token: 34	2640	explorer.exe
Token: 35	2640	explorer.exe
Token: 36	2640	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 1828	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	86
PID 3244 wrote to memory of 2640	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	87
PID 3244 wrote to memory of 2640	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	87
PID 3244 wrote to memory of 2640	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	87
PID 3244 wrote to memory of 2640	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	87
PID 3244 wrote to memory of 2640	3244	JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8854848a600589da4c3f738a8958ee62.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3244
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:1828
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Checks BIOS information in registry
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2640

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\Demo.txt

Filesize
671B

MD5
fdda412125473a423d8717100c017467

SHA1
5f8fd28a02d3e2666c5722fcddcfa42d293f6f21

SHA256
61f72d568285ecf85fa3c76f573f81cc0dd171b1aaf90a1e8d055125fe94ea9b

SHA512
3e7a59b93e058d1457c21dc7e3af6528f7fadb52f689f278e750b5c4d2aa814caba55b17527c33d67e958f289561507ee0086699a2220dee72a2871f88846e44

Download Submit
C:\Users\Admin\AppData\Local\Temp\eula.1031.txt

Filesize
8B

MD5
9c2e0f7e7d68872e307cb8f9f08f2a42

SHA1
e675da7ea97a95aeaf2316f2a775ea4a359abe59

SHA256
288b26f98f4af04169e26b980357bbaf08412d645ed2403ae242f00a5c753ea7

SHA512
3bee37ad7f30a5cd48f686852b590c117ea6cd4e7e24db66c9f7ed9d30ca31f1896533c83eb4d3130cc6f213407e180aa38e58f53f4541d8f4f78a531e994b4d

Download Submit
C:\Windows\SysWOW64\Windupdt\winupdate.exe

Filesize
664KB

MD5
8854848a600589da4c3f738a8958ee62

SHA1
b47f082d3938fb97008518e8d1aedf12c34cac32

SHA256
6fda0fd3839b1877b2a675d09ec1438734131c881a5e2c00a18b487f18fae100

SHA512
9a1d0b4d395fd51081e47065e51e1555d7cbf08c2885b72d33594fa5f4ce2727bba0a5e66628d18733a3da9fae37d2dcf90eb8b8dd6fdc0d974adcb51886eb9e

Download Submit
memory/1828-5-0x0000000000C00000-0x0000000000C01000-memory.dmp

Filesize
4KB

Download
memory/2640-14-0x0000000013140000-0x00000000131FA000-memory.dmp

Filesize
744KB

Download
memory/2640-11-0x0000000013140000-0x00000000131FA000-memory.dmp

Filesize
744KB

Download
memory/2640-10-0x0000000013140000-0x00000000131FA000-memory.dmp

Filesize
744KB

Download
memory/2640-9-0x0000000013140000-0x00000000131FA000-memory.dmp

Filesize
744KB

Download
memory/2640-18-0x0000000013140000-0x00000000131FA000-memory.dmp

Filesize
744KB

Download
memory/2640-17-0x0000000013140000-0x00000000131FA000-memory.dmp

Filesize
744KB

Download
memory/2640-19-0x0000000001760000-0x0000000001761000-memory.dmp

Filesize
4KB

Download
memory/2640-20-0x0000000013140000-0x00000000131FA000-memory.dmp

Filesize
744KB

Download
memory/3244-0-0x0000000013140000-0x00000000131FA000-memory.dmp

Filesize
744KB

Download
memory/3244-3-0x0000000002370000-0x0000000002371000-memory.dmp

Filesize
4KB

Download
memory/3244-16-0x0000000013140000-0x00000000131FA000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads