darkcomet | efd4b3fc882f39cf90b38e28f5a8d6d95f3e2e63bf89e2b863912ee661f87f5f

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13/10/2024, 05:27

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General

Target

3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Size

658KB
MD5

3e0cdb9d798be6ebd89f550ef06f290a
SHA1

03aaa24bdf12565cb30811600efa2f0b3c5c36ef
SHA256

efd4b3fc882f39cf90b38e28f5a8d6d95f3e2e63bf89e2b863912ee661f87f5f
SHA512

cb4b45efb27324bee29e8c77ed71712b133657c65d786976d66d96ab6d967e62ae3823b0af575a3591e3fcb27c9bc4607143a0790a6ba576965af4d2923eacf7
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/ha:KZ1xuVVjfFoynPaVBUR8f+kN10EB0

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

vanicanetwork.no-ip.org:3132

Mutex

DC_MUTEX-HGCNN8A

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
xTykv6eYHaaD
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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	3e0cdb9d798be6ebd89f550ef06f290a_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
3736	attrib.exe
2224	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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3108	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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	3e0cdb9d798be6ebd89f550ef06f290a_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 7 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	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3108	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeSecurityPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeBackupPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeRestorePrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeShutdownPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeDebugPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeUndockPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: 33	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: 34	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: 35	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: 36	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3108	msdcsc.exe
Token: SeSecurityPrivilege	3108	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3108	msdcsc.exe
Token: SeLoadDriverPrivilege	3108	msdcsc.exe
Token: SeSystemProfilePrivilege	3108	msdcsc.exe
Token: SeSystemtimePrivilege	3108	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3108	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3108	msdcsc.exe
Token: SeCreatePagefilePrivilege	3108	msdcsc.exe
Token: SeBackupPrivilege	3108	msdcsc.exe
Token: SeRestorePrivilege	3108	msdcsc.exe
Token: SeShutdownPrivilege	3108	msdcsc.exe
Token: SeDebugPrivilege	3108	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3108	msdcsc.exe
Token: SeChangeNotifyPrivilege	3108	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3108	msdcsc.exe
Token: SeUndockPrivilege	3108	msdcsc.exe
Token: SeManageVolumePrivilege	3108	msdcsc.exe
Token: SeImpersonatePrivilege	3108	msdcsc.exe
Token: SeCreateGlobalPrivilege	3108	msdcsc.exe
Token: 33	3108	msdcsc.exe
Token: 34	3108	msdcsc.exe
Token: 35	3108	msdcsc.exe
Token: 36	3108	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3108	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 760	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe	83
PID 2372 wrote to memory of 760	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe	83
PID 2372 wrote to memory of 760	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe	83
PID 2372 wrote to memory of 4784	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe	84
PID 2372 wrote to memory of 4784	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe	84
PID 2372 wrote to memory of 4784	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe	84
PID 760 wrote to memory of 2224	760	cmd.exe	88
PID 760 wrote to memory of 2224	760	cmd.exe	88
PID 760 wrote to memory of 2224	760	cmd.exe	88
PID 4784 wrote to memory of 3736	4784	cmd.exe	89
PID 4784 wrote to memory of 3736	4784	cmd.exe	89
PID 4784 wrote to memory of 3736	4784	cmd.exe	89
PID 2372 wrote to memory of 3108	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe	91
PID 2372 wrote to memory of 3108	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe	91
PID 2372 wrote to memory of 3108	2372	3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe	91
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92
PID 3108 wrote to memory of 2708	3108	msdcsc.exe	92

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2224	attrib.exe
3736	attrib.exe

C:\Users\Admin\AppData\Local\Temp\3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3e0cdb9d798be6ebd89f550ef06f290a_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:2372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:760
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\3e0cdb9d798be6ebd89f550ef06f290a_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2224
- 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:4784
- - 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:3736
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3108
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2708

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

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

Filesize
658KB

MD5
3e0cdb9d798be6ebd89f550ef06f290a

SHA1
03aaa24bdf12565cb30811600efa2f0b3c5c36ef

SHA256
efd4b3fc882f39cf90b38e28f5a8d6d95f3e2e63bf89e2b863912ee661f87f5f

SHA512
cb4b45efb27324bee29e8c77ed71712b133657c65d786976d66d96ab6d967e62ae3823b0af575a3591e3fcb27c9bc4607143a0790a6ba576965af4d2923eacf7

Download Submit
memory/2372-63-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2372-0-0x00000000006E0000-0x00000000006E1000-memory.dmp

Filesize
4KB

Download
memory/2708-62-0x00000000006C0000-0x00000000006C1000-memory.dmp

Filesize
4KB

Download
memory/3108-67-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-70-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-65-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-66-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-61-0x00000000022C0000-0x00000000022C1000-memory.dmp

Filesize
4KB

Download
memory/3108-68-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-69-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-64-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-71-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-72-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-73-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-74-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-75-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-76-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3108-77-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads