darkcomet | 8c34ded6a1094a5de77491faf90251a8f397c0ce26fa50b116b6b08e76126e92

Analysis

max time kernel
150s
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
03/01/2025, 06:02

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General

Target
JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Size 660KB
Sample250103-grw9psvmgn
SHA256 8c34ded6a1094a5de77491faf90251a8f397c0ce26fa50b116b6b08e76126e92
MD5 6aa88ef80a9697880030311b05628d60
SHA1 7f1e09260ebc3cf88e5f64c13ab745621ed190f4
SHA512 6edd5117b15bb810db9140bd02f010d75ca7bb1c618c7df8fe5aacf11436f38075e4109133db5959f7fb740d65f2ecbaf122b6f01bb27c8e69a556b8a998048f
SSDEEP 12288:UXhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkMh/fy452Uf:CnAw2WWeFcfbP9VPSPMTSPL/rWvzq4Jv
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

teststudio.no-ip.org:1604

Mutex

DC_MUTEX-0ZEL9QS

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
CbiUN4cNhiJo
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
Darkcomet family
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:\\MSDCSC\\msdcsc.exe"	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.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
628	attrib.exe
1028	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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe

Executes dropped EXE 1 IoCs

pid	Process
3948	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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\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 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	JaffaCakes118_6aa88ef80a9697880030311b05628d60.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\	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeSecurityPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeTakeOwnershipPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeLoadDriverPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeSystemProfilePrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeSystemtimePrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeProfSingleProcessPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeIncBasePriorityPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeCreatePagefilePrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeBackupPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeRestorePrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeShutdownPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeDebugPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeSystemEnvironmentPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeChangeNotifyPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeRemoteShutdownPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeUndockPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeManageVolumePrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeImpersonatePrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeCreateGlobalPrivilege	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: 33	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: 34	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: 35	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: 36	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
Token: SeIncreaseQuotaPrivilege	3948	msdcsc.exe
Token: SeSecurityPrivilege	3948	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3948	msdcsc.exe
Token: SeLoadDriverPrivilege	3948	msdcsc.exe
Token: SeSystemProfilePrivilege	3948	msdcsc.exe
Token: SeSystemtimePrivilege	3948	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3948	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3948	msdcsc.exe
Token: SeCreatePagefilePrivilege	3948	msdcsc.exe
Token: SeBackupPrivilege	3948	msdcsc.exe
Token: SeRestorePrivilege	3948	msdcsc.exe
Token: SeShutdownPrivilege	3948	msdcsc.exe
Token: SeDebugPrivilege	3948	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3948	msdcsc.exe
Token: SeChangeNotifyPrivilege	3948	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3948	msdcsc.exe
Token: SeUndockPrivilege	3948	msdcsc.exe
Token: SeManageVolumePrivilege	3948	msdcsc.exe
Token: SeImpersonatePrivilege	3948	msdcsc.exe
Token: SeCreateGlobalPrivilege	3948	msdcsc.exe
Token: 33	3948	msdcsc.exe
Token: 34	3948	msdcsc.exe
Token: 35	3948	msdcsc.exe
Token: 36	3948	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3948	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 936	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe	82
PID 2364 wrote to memory of 936	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe	82
PID 2364 wrote to memory of 936	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe	82
PID 2364 wrote to memory of 2016	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe	84
PID 2364 wrote to memory of 2016	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe	84
PID 2364 wrote to memory of 2016	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe	84
PID 2016 wrote to memory of 628	2016	cmd.exe	86
PID 2016 wrote to memory of 628	2016	cmd.exe	86
PID 2016 wrote to memory of 628	2016	cmd.exe	86
PID 936 wrote to memory of 1028	936	cmd.exe	87
PID 936 wrote to memory of 1028	936	cmd.exe	87
PID 936 wrote to memory of 1028	936	cmd.exe	87
PID 2364 wrote to memory of 3948	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe	88
PID 2364 wrote to memory of 3948	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe	88
PID 2364 wrote to memory of 3948	2364	JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe	88
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89
PID 3948 wrote to memory of 1700	3948	msdcsc.exe	89

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
628	attrib.exe
1028	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6aa88ef80a9697880030311b05628d60.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:2364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:936
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6aa88ef80a9697880030311b05628d60.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1028
- 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:2016
- - 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:628
- C:\MSDCSC\msdcsc.exe
  "C:\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3948
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1700

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

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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msdcsc.exe

Path C:\MSDCSC\msdcsc.exe
Size 660KB
SHA256 8c34ded6a1094a5de77491faf90251a8f397c0ce26fa50b116b6b08e76126e92
MD5 6aa88ef80a9697880030311b05628d60
SHA1 7f1e09260ebc3cf88e5f64c13ab745621ed190f4
SHA512 6edd5117b15bb810db9140bd02f010d75ca7bb1c618c7df8fe5aacf11436f38075e4109133db5959f7fb740d65f2ecbaf122b6f01bb27c8e69a556b8a998048f
SSDEEP 12288:UXhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkMh/fy452Uf:CnAw2WWeFcfbP9VPSPMTSPL/rWvzq4Jv
MD5 SHA1 SHA512 SSDEEP

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memory/1700-64-0x0000000000EC0000-0x0000000000EC1000-memory.dmp

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memory/2364-0-0x0000000002250000-0x0000000002251000-memory.dmp

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memory/2364-63-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-70-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-71-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-66-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-67-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-68-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-69-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-62-0x0000000002030000-0x0000000002031000-memory.dmp

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memory/3948-65-0x0000000002030000-0x0000000002031000-memory.dmp

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memory/3948-72-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-73-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-74-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-75-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-76-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-77-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-78-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3948-79-0x0000000000400000-0x00000000004B5000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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