darkcomet | b41f5d22552ebb322c71f0eeb7d50092076cf2909aad2b7600b62c2189faf6a5

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-10-2024 18:22

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General

Target

703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Size

758KB
MD5

703d925fc6a6f241142e8f1bb4b6fc32
SHA1

fc13ff6c6850e2899279b88c50a3f0171b78c40a
SHA256

b41f5d22552ebb322c71f0eeb7d50092076cf2909aad2b7600b62c2189faf6a5
SHA512

836c5970ce4f62ca201141a38188c072779d154845b5ac11ea4b3b0cb7ced7634d2f6755623a4f3dfb58a641bdff0c146b07d5f3755bdecc1b9e9f860a1c7c38
SSDEEP

12288:uXhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkMh/fy452U2:wnAw2WWeFcfbP9VPSPMTSPL/rWvzq4Jm

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

213.140.194.52:1604

Mutex

DC_MUTEX-0WX3EPZ

Attributes

InstallPath
update\msdcsc.exe
gencode
MutLvZKoeehX
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:\\update\\msdcsc.exe"	703d925fc6a6f241142e8f1bb4b6fc32_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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2128	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\update\\msdcsc.exe"	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeSecurityPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeSystemtimePrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeBackupPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeRestorePrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeShutdownPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeDebugPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeUndockPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeManageVolumePrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeImpersonatePrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: 33	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: 34	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: 35	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: 36	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2128	msdcsc.exe
Token: SeSecurityPrivilege	2128	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2128	msdcsc.exe
Token: SeLoadDriverPrivilege	2128	msdcsc.exe
Token: SeSystemProfilePrivilege	2128	msdcsc.exe
Token: SeSystemtimePrivilege	2128	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2128	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2128	msdcsc.exe
Token: SeCreatePagefilePrivilege	2128	msdcsc.exe
Token: SeBackupPrivilege	2128	msdcsc.exe
Token: SeRestorePrivilege	2128	msdcsc.exe
Token: SeShutdownPrivilege	2128	msdcsc.exe
Token: SeDebugPrivilege	2128	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2128	msdcsc.exe
Token: SeChangeNotifyPrivilege	2128	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2128	msdcsc.exe
Token: SeUndockPrivilege	2128	msdcsc.exe
Token: SeManageVolumePrivilege	2128	msdcsc.exe
Token: SeImpersonatePrivilege	2128	msdcsc.exe
Token: SeCreateGlobalPrivilege	2128	msdcsc.exe
Token: 33	2128	msdcsc.exe
Token: 34	2128	msdcsc.exe
Token: 35	2128	msdcsc.exe
Token: 36	2128	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2128	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5108 wrote to memory of 2128	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe	85
PID 5108 wrote to memory of 2128	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe	85
PID 5108 wrote to memory of 2128	5108	703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\703d925fc6a6f241142e8f1bb4b6fc32_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\703d925fc6a6f241142e8f1bb4b6fc32_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:5108
- C:\update\msdcsc.exe
  "C:\update\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2128

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:\update\msdcsc.exe

Filesize
758KB

MD5
703d925fc6a6f241142e8f1bb4b6fc32

SHA1
fc13ff6c6850e2899279b88c50a3f0171b78c40a

SHA256
b41f5d22552ebb322c71f0eeb7d50092076cf2909aad2b7600b62c2189faf6a5

SHA512
836c5970ce4f62ca201141a38188c072779d154845b5ac11ea4b3b0cb7ced7634d2f6755623a4f3dfb58a641bdff0c146b07d5f3755bdecc1b9e9f860a1c7c38

Download Submit
memory/2128-14-0x0000000002290000-0x0000000002291000-memory.dmp

Filesize
4KB

Download
memory/2128-16-0x0000000002290000-0x0000000002291000-memory.dmp

Filesize
4KB

Download
memory/2128-15-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/2128-18-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/5108-0-0x0000000002280000-0x0000000002281000-memory.dmp

Filesize
4KB

Download
memory/5108-12-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads