darkcomet | 28c06bd09e2acd56379d16fa8d66ace55ac7dffdc790e5b6d927fb268e849a3e

Analysis

max time kernel
150s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
20/03/2025, 12:15

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General

Target

JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Size

666KB
MD5

82cb757cbb5131d04a810cd570ae057e
SHA1

8e8a66a384c0110e611d752c06d915232b2ecdbc
SHA256

28c06bd09e2acd56379d16fa8d66ace55ac7dffdc790e5b6d927fb268e849a3e
SHA512

bf9acee20ce0671d931d28bee7a613d8e8c7c6ade54adfaf97ab52d37dd8123c452a5395f3281b33ccbfe7505da1de5b2508e6f479a019619f65cfd5d3044217
SSDEEP

12288:ZpwABK90BOe/x9lPAYvxPQVjdsAY2XjWlnlpTMMXG91uhKIXn/61:LwAcu99lPzvxP+Bsz2XjWTRMQckkIXn2

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Attributes

gencode
install
false
offline_keylogger
false
persistence
false

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:\\Windupdt\\winupdate.exe"	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe

Checks BIOS information in registry 2 TTPs 3 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	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-814918696-1585701690-3140955116-1000\Control Panel\International\Geo\Nation	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe

Executes dropped EXE 1 IoCs

pid	Process
4180	winupdate.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-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 6000 set thread context of 5532	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	86

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 4 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_82cb757cbb5131d04a810cd570ae057e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ping.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
5700	ping.exe

Checks processor information in registry 2 TTPs 12 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\ProcessorNameString	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5700	ping.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4180	winupdate.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeSecurityPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeTakeOwnershipPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeLoadDriverPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeSystemProfilePrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeSystemtimePrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeProfSingleProcessPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeIncBasePriorityPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeCreatePagefilePrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeBackupPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeRestorePrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeShutdownPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeDebugPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeSystemEnvironmentPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeChangeNotifyPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeRemoteShutdownPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeUndockPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeManageVolumePrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeImpersonatePrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeCreateGlobalPrivilege	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: 33	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: 34	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: 35	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: 36	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
Token: SeIncreaseQuotaPrivilege	5532	explorer.exe
Token: SeSecurityPrivilege	5532	explorer.exe
Token: SeTakeOwnershipPrivilege	5532	explorer.exe
Token: SeLoadDriverPrivilege	5532	explorer.exe
Token: SeSystemProfilePrivilege	5532	explorer.exe
Token: SeSystemtimePrivilege	5532	explorer.exe
Token: SeProfSingleProcessPrivilege	5532	explorer.exe
Token: SeIncBasePriorityPrivilege	5532	explorer.exe
Token: SeCreatePagefilePrivilege	5532	explorer.exe
Token: SeBackupPrivilege	5532	explorer.exe
Token: SeRestorePrivilege	5532	explorer.exe
Token: SeShutdownPrivilege	5532	explorer.exe
Token: SeDebugPrivilege	5532	explorer.exe
Token: SeSystemEnvironmentPrivilege	5532	explorer.exe
Token: SeChangeNotifyPrivilege	5532	explorer.exe
Token: SeRemoteShutdownPrivilege	5532	explorer.exe
Token: SeUndockPrivilege	5532	explorer.exe
Token: SeManageVolumePrivilege	5532	explorer.exe
Token: SeImpersonatePrivilege	5532	explorer.exe
Token: SeCreateGlobalPrivilege	5532	explorer.exe
Token: 33	5532	explorer.exe
Token: 34	5532	explorer.exe
Token: 35	5532	explorer.exe
Token: 36	5532	explorer.exe
Token: SeIncreaseQuotaPrivilege	4180	winupdate.exe
Token: SeSecurityPrivilege	4180	winupdate.exe
Token: SeTakeOwnershipPrivilege	4180	winupdate.exe
Token: SeLoadDriverPrivilege	4180	winupdate.exe
Token: SeSystemProfilePrivilege	4180	winupdate.exe
Token: SeSystemtimePrivilege	4180	winupdate.exe
Token: SeProfSingleProcessPrivilege	4180	winupdate.exe
Token: SeIncBasePriorityPrivilege	4180	winupdate.exe
Token: SeCreatePagefilePrivilege	4180	winupdate.exe
Token: SeBackupPrivilege	4180	winupdate.exe
Token: SeRestorePrivilege	4180	winupdate.exe
Token: SeShutdownPrivilege	4180	winupdate.exe
Token: SeDebugPrivilege	4180	winupdate.exe
Token: SeSystemEnvironmentPrivilege	4180	winupdate.exe
Token: SeChangeNotifyPrivilege	4180	winupdate.exe
Token: SeRemoteShutdownPrivilege	4180	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4180	winupdate.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 6000 wrote to memory of 5532	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	86
PID 6000 wrote to memory of 5532	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	86
PID 6000 wrote to memory of 5532	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	86
PID 6000 wrote to memory of 5532	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	86
PID 6000 wrote to memory of 5532	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	86
PID 6000 wrote to memory of 4180	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	87
PID 6000 wrote to memory of 4180	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	87
PID 6000 wrote to memory of 4180	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	87
PID 6000 wrote to memory of 5700	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	88
PID 6000 wrote to memory of 5700	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	88
PID 6000 wrote to memory of 5700	6000	JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- 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:6000
- 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:5532
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4180
- C:\Windows\SysWOW64\ping.exe
  ping 127.0.0.1 -n 5 > NUL del "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82cb757cbb5131d04a810cd570ae057e.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Runs ping.exe
  PID:5700

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

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windupdt\winupdate.exe

Filesize
666KB

MD5
82cb757cbb5131d04a810cd570ae057e

SHA1
8e8a66a384c0110e611d752c06d915232b2ecdbc

SHA256
28c06bd09e2acd56379d16fa8d66ace55ac7dffdc790e5b6d927fb268e849a3e

SHA512
bf9acee20ce0671d931d28bee7a613d8e8c7c6ade54adfaf97ab52d37dd8123c452a5395f3281b33ccbfe7505da1de5b2508e6f479a019619f65cfd5d3044217

Download Submit
memory/4180-27-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-29-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-34-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-33-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-32-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-23-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-30-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-24-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-28-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-26-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-25-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-21-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-22-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4180-31-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5532-5-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5532-20-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5532-18-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5532-17-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5532-13-0x0000000003120000-0x0000000003121000-memory.dmp

Filesize
4KB

Download
memory/5532-12-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5532-4-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5532-7-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5532-6-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/6000-19-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/6000-0-0x00000000022A0000-0x00000000022A1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads