darkcomet | f6e90bc9e9a52188f5867cab5f98c215e64bdb10ec2776ef1367e1d0f914d70e

General

Target

91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Size

363KB
MD5

91db0e5f1bdc9c34b637e1486af2ba20
SHA1

4c074d5aff5729d91d727ece6d69468bb0856907
SHA256

f6e90bc9e9a52188f5867cab5f98c215e64bdb10ec2776ef1367e1d0f914d70e
SHA512

227a3be706b2690e549407cad8f4259e1f235db751b83888cfa14fa0a500a4f78182694bab5a1781b4c7107e83531778a748896f3478286b64483ea7910f8286
SSDEEP

6144:zw7mFvX4PWlLnTb2mpF4jb6dnUCL/AFKWkkeLJvEZhURqPmha/sV56e5t+R3IIh2:MkvYILnTtpG/2JzLpyhfekWEIIhII

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

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

Processes:

91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe

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"	91db0e5f1bdc9c34b637e1486af2ba20_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

Processes:

91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3440 msdcsc.exe

pid	process
3440	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\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 2 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

Processes:

91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exemsdcsc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Modifies registry class 1 IoCs

Processes:

91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeSecurityPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeBackupPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeRestorePrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeShutdownPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeDebugPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeUndockPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: 33	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: 34	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: 35	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: 36	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3440	msdcsc.exe
Token: SeSecurityPrivilege	3440	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3440	msdcsc.exe
Token: SeLoadDriverPrivilege	3440	msdcsc.exe
Token: SeSystemProfilePrivilege	3440	msdcsc.exe
Token: SeSystemtimePrivilege	3440	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3440	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3440	msdcsc.exe
Token: SeCreatePagefilePrivilege	3440	msdcsc.exe
Token: SeBackupPrivilege	3440	msdcsc.exe
Token: SeRestorePrivilege	3440	msdcsc.exe
Token: SeShutdownPrivilege	3440	msdcsc.exe
Token: SeDebugPrivilege	3440	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3440	msdcsc.exe
Token: SeChangeNotifyPrivilege	3440	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3440	msdcsc.exe
Token: SeUndockPrivilege	3440	msdcsc.exe
Token: SeManageVolumePrivilege	3440	msdcsc.exe
Token: SeImpersonatePrivilege	3440	msdcsc.exe
Token: SeCreateGlobalPrivilege	3440	msdcsc.exe
Token: 33	3440	msdcsc.exe
Token: 34	3440	msdcsc.exe
Token: 35	3440	msdcsc.exe
Token: 36	3440	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

3440 msdcsc.exe

pid	process
3440	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe

description	pid	process	target process
PID 4120 wrote to memory of 3440	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe	msdcsc.exe
PID 4120 wrote to memory of 3440	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe	msdcsc.exe
PID 4120 wrote to memory of 3440	4120	91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\91db0e5f1bdc9c34b637e1486af2ba20_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- 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:4120
- 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 use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
363KB

MD5
91db0e5f1bdc9c34b637e1486af2ba20

SHA1
4c074d5aff5729d91d727ece6d69468bb0856907

SHA256
f6e90bc9e9a52188f5867cab5f98c215e64bdb10ec2776ef1367e1d0f914d70e

SHA512
227a3be706b2690e549407cad8f4259e1f235db751b83888cfa14fa0a500a4f78182694bab5a1781b4c7107e83531778a748896f3478286b64483ea7910f8286

Download Submit
memory/3440-71-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-80-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-70-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-65-0x0000000000720000-0x0000000000721000-memory.dmp

Filesize
4KB

Download
memory/3440-66-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-67-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-68-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-69-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-79-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-78-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-73-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-72-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-74-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-75-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-76-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/3440-77-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/4120-1-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/4120-64-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download
memory/4120-0-0x0000000000400000-0x00000000004F7000-memory.dmp

Filesize
988KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads