darkcomet | 294bb46e7190523031b0ae138c6b094766c1171fde3c773d4da335e715b3eb7e

Analysis

max time kernel
150s
max time network
111s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15/08/2024, 08:21

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General

Target
99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Size 760KB
Sample240815-j828dstbma
SHA256 294bb46e7190523031b0ae138c6b094766c1171fde3c773d4da335e715b3eb7e
MD5 99878ebac98f91386d153a3ef61caefd
SHA1 141a7b5c4cb74a6aa8e0a8c48041fba7472f0c56
SHA512 d4fb0a0e5bb26834abaafdd6ed4e37796f8fc150a2e6e50a6b1d4ad14a279db91ce2b7bf3dc00c43bf12302fc8c8093bc15def48312f2dbafc2f176d26442fd0
SSDEEP 12288:D3OpvTE4a76S/Ddon/m09bbYlIaaMcE2YGhq3vo1RnfAvIESJgoE26yc/RpsvvZ:7Ow4aWNn/m09fKIaaBEtWq3A1Ov8Jgb2
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

dxd300.publicvm.com:1604

Mutex

DC_MUTEX-4AF785U

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
xXNuPQBDMML7
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

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"	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
4448	attrib.exe
5036	attrib.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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3424	notepad.exe

Executes dropped EXE 1 IoCs

pid	Process
3184	msdcsc.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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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 8 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	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.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\	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3184	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeSecurityPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeSystemtimePrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeBackupPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeRestorePrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeShutdownPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeDebugPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeUndockPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeManageVolumePrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeImpersonatePrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: 33	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: 34	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: 35	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: 36	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3184	msdcsc.exe
Token: SeSecurityPrivilege	3184	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3184	msdcsc.exe
Token: SeLoadDriverPrivilege	3184	msdcsc.exe
Token: SeSystemProfilePrivilege	3184	msdcsc.exe
Token: SeSystemtimePrivilege	3184	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3184	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3184	msdcsc.exe
Token: SeCreatePagefilePrivilege	3184	msdcsc.exe
Token: SeBackupPrivilege	3184	msdcsc.exe
Token: SeRestorePrivilege	3184	msdcsc.exe
Token: SeShutdownPrivilege	3184	msdcsc.exe
Token: SeDebugPrivilege	3184	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3184	msdcsc.exe
Token: SeChangeNotifyPrivilege	3184	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3184	msdcsc.exe
Token: SeUndockPrivilege	3184	msdcsc.exe
Token: SeManageVolumePrivilege	3184	msdcsc.exe
Token: SeImpersonatePrivilege	3184	msdcsc.exe
Token: SeCreateGlobalPrivilege	3184	msdcsc.exe
Token: 33	3184	msdcsc.exe
Token: 34	3184	msdcsc.exe
Token: 35	3184	msdcsc.exe
Token: 36	3184	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3184	msdcsc.exe

Suspicious use of WriteProcessMemory 54 IoCs

description	pid	Process	procid_target
PID 728 wrote to memory of 1924	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	84
PID 728 wrote to memory of 1924	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	84
PID 728 wrote to memory of 1924	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	84
PID 728 wrote to memory of 2672	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	86
PID 728 wrote to memory of 2672	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	86
PID 728 wrote to memory of 2672	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	86
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 728 wrote to memory of 3424	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	87
PID 1924 wrote to memory of 4448	1924	cmd.exe	89
PID 1924 wrote to memory of 4448	1924	cmd.exe	89
PID 1924 wrote to memory of 4448	1924	cmd.exe	89
PID 2672 wrote to memory of 5036	2672	cmd.exe	90
PID 2672 wrote to memory of 5036	2672	cmd.exe	90
PID 2672 wrote to memory of 5036	2672	cmd.exe	90
PID 728 wrote to memory of 3184	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	91
PID 728 wrote to memory of 3184	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	91
PID 728 wrote to memory of 3184	728	99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe	91
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92
PID 3184 wrote to memory of 4048	3184	msdcsc.exe	92

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4448	attrib.exe
5036	attrib.exe

C:\Users\Admin\AppData\Local\Temp\99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1924
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\99878ebac98f91386d153a3ef61caefd_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:4448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:5036
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3424
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3184
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4048

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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

msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 760KB
SHA256 294bb46e7190523031b0ae138c6b094766c1171fde3c773d4da335e715b3eb7e
MD5 99878ebac98f91386d153a3ef61caefd
SHA1 141a7b5c4cb74a6aa8e0a8c48041fba7472f0c56
SHA512 d4fb0a0e5bb26834abaafdd6ed4e37796f8fc150a2e6e50a6b1d4ad14a279db91ce2b7bf3dc00c43bf12302fc8c8093bc15def48312f2dbafc2f176d26442fd0
SSDEEP 12288:D3OpvTE4a76S/Ddon/m09bbYlIaaMcE2YGhq3vo1RnfAvIESJgoE26yc/RpsvvZ:7Ow4aWNn/m09fKIaaBEtWq3A1Ov8Jgb2
MD5 SHA1 SHA512 SSDEEP

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memory/728-0-0x00000000007D0000-0x00000000007D1000-memory.dmp

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memory/728-64-0x0000000000400000-0x00000000004CD000-memory.dmp

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memory/3184-66-0x0000000000400000-0x00000000004CD000-memory.dmp

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memory/3184-68-0x0000000000400000-0x00000000004CD000-memory.dmp

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memory/3424-4-0x0000000001170000-0x0000000001171000-memory.dmp

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memory/4048-63-0x0000000000850000-0x0000000000851000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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