darkcomet | 3d3ddbe28d0b0b39a5c64a9cd062593f056a3c9a608073646dfc5e1dd55a7356

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24/09/2024, 10:55

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General

Target
f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Size 661KB
Sample240924-m1drlssarn
SHA256 3d3ddbe28d0b0b39a5c64a9cd062593f056a3c9a608073646dfc5e1dd55a7356
MD5 f37c39d23241d810bf574afd63d1475a
SHA1 f9017197fc5726f345f0d2398d42dfbe5e61339d
SHA512 acf8047755df03a4924e25cda00a09050ed1227bf57353e924d01912108efa46d5b91b68ef27a80764332c88e1b08c8ff4568a4c25f0aff7b0f0dccfd047054c
SSDEEP 12288:pXhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkwh/:VnAw2WWeFcfbP9VPSPMTSPL/rWvzq4Jd
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:1604

Mutex

DC_MUTEX-RQ9D7DQ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
TdbyFJMD6RSA
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

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"	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.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
1552	attrib.exe
212	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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
228	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-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\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 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
228	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeSecurityPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeBackupPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeRestorePrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeShutdownPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeDebugPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeUndockPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: 33	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: 34	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: 35	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: 36	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	228	msdcsc.exe
Token: SeSecurityPrivilege	228	msdcsc.exe
Token: SeTakeOwnershipPrivilege	228	msdcsc.exe
Token: SeLoadDriverPrivilege	228	msdcsc.exe
Token: SeSystemProfilePrivilege	228	msdcsc.exe
Token: SeSystemtimePrivilege	228	msdcsc.exe
Token: SeProfSingleProcessPrivilege	228	msdcsc.exe
Token: SeIncBasePriorityPrivilege	228	msdcsc.exe
Token: SeCreatePagefilePrivilege	228	msdcsc.exe
Token: SeBackupPrivilege	228	msdcsc.exe
Token: SeRestorePrivilege	228	msdcsc.exe
Token: SeShutdownPrivilege	228	msdcsc.exe
Token: SeDebugPrivilege	228	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	228	msdcsc.exe
Token: SeChangeNotifyPrivilege	228	msdcsc.exe
Token: SeRemoteShutdownPrivilege	228	msdcsc.exe
Token: SeUndockPrivilege	228	msdcsc.exe
Token: SeManageVolumePrivilege	228	msdcsc.exe
Token: SeImpersonatePrivilege	228	msdcsc.exe
Token: SeCreateGlobalPrivilege	228	msdcsc.exe
Token: 33	228	msdcsc.exe
Token: 34	228	msdcsc.exe
Token: 35	228	msdcsc.exe
Token: 36	228	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
228	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 3528	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	87
PID 2648 wrote to memory of 3528	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	87
PID 2648 wrote to memory of 3528	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	87
PID 2648 wrote to memory of 4420	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	89
PID 2648 wrote to memory of 4420	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	89
PID 2648 wrote to memory of 4420	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	89
PID 2648 wrote to memory of 228	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	90
PID 2648 wrote to memory of 228	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	90
PID 2648 wrote to memory of 228	2648	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	90
PID 3528 wrote to memory of 1552	3528	cmd.exe	92
PID 3528 wrote to memory of 1552	3528	cmd.exe	92
PID 3528 wrote to memory of 1552	3528	cmd.exe	92
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 228 wrote to memory of 2552	228	msdcsc.exe	93
PID 4420 wrote to memory of 212	4420	cmd.exe	94
PID 4420 wrote to memory of 212	4420	cmd.exe	94
PID 4420 wrote to memory of 212	4420	cmd.exe	94

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1552	attrib.exe
212	attrib.exe

C:\Users\Admin\AppData\Local\Temp\f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f37c39d23241d810bf574afd63d1475a_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:2648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3528
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1552
- 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:4420
- - 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:212
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:228
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2552

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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Downloads

msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 661KB
SHA256 3d3ddbe28d0b0b39a5c64a9cd062593f056a3c9a608073646dfc5e1dd55a7356
MD5 f37c39d23241d810bf574afd63d1475a
SHA1 f9017197fc5726f345f0d2398d42dfbe5e61339d
SHA512 acf8047755df03a4924e25cda00a09050ed1227bf57353e924d01912108efa46d5b91b68ef27a80764332c88e1b08c8ff4568a4c25f0aff7b0f0dccfd047054c
SSDEEP 12288:pXhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkwh/:VnAw2WWeFcfbP9VPSPMTSPL/rWvzq4Jd
MD5 SHA1 SHA512 SSDEEP

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memory/228-14-0x00000000009B0000-0x00000000009B1000-memory.dmp

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memory/228-16-0x00000000009B0000-0x00000000009B1000-memory.dmp

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memory/228-17-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/2552-15-0x00000000012E0000-0x00000000012E1000-memory.dmp

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memory/2648-0-0x0000000000AA0000-0x0000000000AA1000-memory.dmp

Download

memory/2648-13-0x0000000000400000-0x00000000004B5000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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