darkcomet | 50eead865b8c7f1340eed849b3b4cedaa1285e1d2e398f88b79de416b94b5ddd

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16-04-2024 11:08

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General

Target

f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Size

658KB
MD5

f35cec3eacc50d65da694d4a78915a23
SHA1

c9e64bf495a16056b9b4d84b13e7cf662580f0d2
SHA256

50eead865b8c7f1340eed849b3b4cedaa1285e1d2e398f88b79de416b94b5ddd
SHA512

a2bf10ac563130d2eaaf7f28b6b9d3ff4add702fe475fa2d54c66f64afd1d0dabe2b8c7522c28d4f1b1a34df46dd43b194bcefd2350fd244635761de889d20b5
SSDEEP

12288:S9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLd9Ek5C/hU:+Z1xuVVjfFoynPaVBUR8f+kN1PEBq

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

ersg2013.zapto.org:28

Mutex

DC_MUTEX-GY2H3ER

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
52QzXvZVaWLU
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

Processes:

f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\MSDCSC\\msdcsc.exe"	f35cec3eacc50d65da694d4a78915a23_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:

f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
2312	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

msdcsc.exef35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeSecurityPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeBackupPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeRestorePrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeShutdownPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeDebugPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeUndockPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: 33	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: 34	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: 35	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: 36	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2312	msdcsc.exe
Token: SeSecurityPrivilege	2312	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2312	msdcsc.exe
Token: SeLoadDriverPrivilege	2312	msdcsc.exe
Token: SeSystemProfilePrivilege	2312	msdcsc.exe
Token: SeSystemtimePrivilege	2312	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2312	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2312	msdcsc.exe
Token: SeCreatePagefilePrivilege	2312	msdcsc.exe
Token: SeBackupPrivilege	2312	msdcsc.exe
Token: SeRestorePrivilege	2312	msdcsc.exe
Token: SeShutdownPrivilege	2312	msdcsc.exe
Token: SeDebugPrivilege	2312	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2312	msdcsc.exe
Token: SeChangeNotifyPrivilege	2312	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2312	msdcsc.exe
Token: SeUndockPrivilege	2312	msdcsc.exe
Token: SeManageVolumePrivilege	2312	msdcsc.exe
Token: SeImpersonatePrivilege	2312	msdcsc.exe
Token: SeCreateGlobalPrivilege	2312	msdcsc.exe
Token: 33	2312	msdcsc.exe
Token: 34	2312	msdcsc.exe
Token: 35	2312	msdcsc.exe
Token: 36	2312	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
2312	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe

description	pid	Process	procid_target
PID 1944 wrote to memory of 2312	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe	86
PID 1944 wrote to memory of 2312	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe	86
PID 1944 wrote to memory of 2312	1944	f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f35cec3eacc50d65da694d4a78915a23_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944
- C:\MSDCSC\msdcsc.exe
  "C:\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2312

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
f35cec3eacc50d65da694d4a78915a23

SHA1
c9e64bf495a16056b9b4d84b13e7cf662580f0d2

SHA256
50eead865b8c7f1340eed849b3b4cedaa1285e1d2e398f88b79de416b94b5ddd

SHA512
a2bf10ac563130d2eaaf7f28b6b9d3ff4add702fe475fa2d54c66f64afd1d0dabe2b8c7522c28d4f1b1a34df46dd43b194bcefd2350fd244635761de889d20b5

Download Submit
memory/1944-14-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1944-0-0x00000000023C0000-0x00000000023C1000-memory.dmp

Filesize
4KB

Download
memory/2312-19-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-17-0x0000000002130000-0x0000000002131000-memory.dmp

Filesize
4KB

Download
memory/2312-18-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-13-0x0000000002130000-0x0000000002131000-memory.dmp

Filesize
4KB

Download
memory/2312-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-22-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-27-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-29-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download