darkcomet | e490d74d2ae5e9b84e7a341b47472da7b241daf92e64da760d9206043c411d45

Analysis

max time kernel
149s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08/10/2024, 04:24

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General

Target

1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Size

869KB
MD5

1f8ed890e0080167696df9f4d8a153a4
SHA1

6aaf29cbf84b75f28d316503bc8034d4e0f6abc6
SHA256

e490d74d2ae5e9b84e7a341b47472da7b241daf92e64da760d9206043c411d45
SHA512

992e897e20e6cc222aa810b972175efdad94b59a5140b805ae1e98b4fc9c8d03c68d52cecb7f483433c4898ff51ba7d1d76e27e18d069f445f909d94725dca05
SSDEEP

24576:G0QRWoJEfg0oChGdJQbjPbNW5tYeP+GF4h7uVkAg37:RQRV2o3MPY5Axh7uU

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
MSDCSC\msdcsc.exe
gencode
kcNNnp9VkE2N
install
true
offline_keylogger
true
persistence
false
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

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:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe"	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
5068	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe"	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5068 set thread context of 4588	5068	msdcsc.exe	87

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	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeSecurityPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeBackupPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeRestorePrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeShutdownPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeDebugPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeUndockPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: 33	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: 34	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: 35	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: 36	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	5068	msdcsc.exe
Token: SeSecurityPrivilege	5068	msdcsc.exe
Token: SeTakeOwnershipPrivilege	5068	msdcsc.exe
Token: SeLoadDriverPrivilege	5068	msdcsc.exe
Token: SeSystemProfilePrivilege	5068	msdcsc.exe
Token: SeSystemtimePrivilege	5068	msdcsc.exe
Token: SeProfSingleProcessPrivilege	5068	msdcsc.exe
Token: SeIncBasePriorityPrivilege	5068	msdcsc.exe
Token: SeCreatePagefilePrivilege	5068	msdcsc.exe
Token: SeBackupPrivilege	5068	msdcsc.exe
Token: SeRestorePrivilege	5068	msdcsc.exe
Token: SeShutdownPrivilege	5068	msdcsc.exe
Token: SeDebugPrivilege	5068	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	5068	msdcsc.exe
Token: SeChangeNotifyPrivilege	5068	msdcsc.exe
Token: SeRemoteShutdownPrivilege	5068	msdcsc.exe
Token: SeUndockPrivilege	5068	msdcsc.exe
Token: SeManageVolumePrivilege	5068	msdcsc.exe
Token: SeImpersonatePrivilege	5068	msdcsc.exe
Token: SeCreateGlobalPrivilege	5068	msdcsc.exe
Token: 33	5068	msdcsc.exe
Token: 34	5068	msdcsc.exe
Token: 35	5068	msdcsc.exe
Token: 36	5068	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	4588	iexplore.exe
Token: SeSecurityPrivilege	4588	iexplore.exe
Token: SeTakeOwnershipPrivilege	4588	iexplore.exe
Token: SeLoadDriverPrivilege	4588	iexplore.exe
Token: SeSystemProfilePrivilege	4588	iexplore.exe
Token: SeSystemtimePrivilege	4588	iexplore.exe
Token: SeProfSingleProcessPrivilege	4588	iexplore.exe
Token: SeIncBasePriorityPrivilege	4588	iexplore.exe
Token: SeCreatePagefilePrivilege	4588	iexplore.exe
Token: SeBackupPrivilege	4588	iexplore.exe
Token: SeRestorePrivilege	4588	iexplore.exe
Token: SeShutdownPrivilege	4588	iexplore.exe
Token: SeDebugPrivilege	4588	iexplore.exe
Token: SeSystemEnvironmentPrivilege	4588	iexplore.exe
Token: SeChangeNotifyPrivilege	4588	iexplore.exe
Token: SeRemoteShutdownPrivilege	4588	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4588	iexplore.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3720 wrote to memory of 5068	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe	86
PID 3720 wrote to memory of 5068	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe	86
PID 3720 wrote to memory of 5068	3720	1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe	86
PID 5068 wrote to memory of 4588	5068	msdcsc.exe	87
PID 5068 wrote to memory of 4588	5068	msdcsc.exe	87
PID 5068 wrote to memory of 4588	5068	msdcsc.exe	87
PID 5068 wrote to memory of 4588	5068	msdcsc.exe	87
PID 5068 wrote to memory of 4588	5068	msdcsc.exe	87

C:\Users\Admin\AppData\Local\Temp\1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1f8ed890e0080167696df9f4d8a153a4_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3720
- C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
  "C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5068
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4588

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:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe

Filesize
869KB

MD5
1f8ed890e0080167696df9f4d8a153a4

SHA1
6aaf29cbf84b75f28d316503bc8034d4e0f6abc6

SHA256
e490d74d2ae5e9b84e7a341b47472da7b241daf92e64da760d9206043c411d45

SHA512
992e897e20e6cc222aa810b972175efdad94b59a5140b805ae1e98b4fc9c8d03c68d52cecb7f483433c4898ff51ba7d1d76e27e18d069f445f909d94725dca05

Download Submit
memory/3720-0-0x0000000002380000-0x0000000002381000-memory.dmp

Filesize
4KB

Download
memory/3720-13-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/4588-15-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/5068-14-0x0000000002720000-0x0000000002721000-memory.dmp

Filesize
4KB

Download
memory/5068-16-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads