darkcomet | 3d3ddbe28d0b0b39a5c64a9cd062593f056a3c9a608073646dfc5e1dd55a7356

Analysis

max time kernel
150s
max time network
113s
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 12:20

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General

Target

f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Size

661KB
MD5

f37c39d23241d810bf574afd63d1475a
SHA1

f9017197fc5726f345f0d2398d42dfbe5e61339d
SHA256

3d3ddbe28d0b0b39a5c64a9cd062593f056a3c9a608073646dfc5e1dd55a7356
SHA512

acf8047755df03a4924e25cda00a09050ed1227bf57353e924d01912108efa46d5b91b68ef27a80764332c88e1b08c8ff4568a4c25f0aff7b0f0dccfd047054c
SSDEEP

12288:pXhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkwh/:VnAw2WWeFcfbP9VPSPMTSPL/rWvzq4Jd

Score

10^/10

darkcomet guest16 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

Processes:

f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe

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 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Processes:

msdcsc.exe

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

Processes:

attrib.exeattrib.exe

pid	Process
4580	attrib.exe
2612	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

Processes:

f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
4420	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exemsdcsc.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid	Process
4420	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeSecurityPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeBackupPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeRestorePrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeShutdownPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeDebugPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeUndockPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: 33	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: 34	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: 35	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: 36	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4420	msdcsc.exe
Token: SeSecurityPrivilege	4420	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4420	msdcsc.exe
Token: SeLoadDriverPrivilege	4420	msdcsc.exe
Token: SeSystemProfilePrivilege	4420	msdcsc.exe
Token: SeSystemtimePrivilege	4420	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4420	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4420	msdcsc.exe
Token: SeCreatePagefilePrivilege	4420	msdcsc.exe
Token: SeBackupPrivilege	4420	msdcsc.exe
Token: SeRestorePrivilege	4420	msdcsc.exe
Token: SeShutdownPrivilege	4420	msdcsc.exe
Token: SeDebugPrivilege	4420	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4420	msdcsc.exe
Token: SeChangeNotifyPrivilege	4420	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4420	msdcsc.exe
Token: SeUndockPrivilege	4420	msdcsc.exe
Token: SeManageVolumePrivilege	4420	msdcsc.exe
Token: SeImpersonatePrivilege	4420	msdcsc.exe
Token: SeCreateGlobalPrivilege	4420	msdcsc.exe
Token: 33	4420	msdcsc.exe
Token: 34	4420	msdcsc.exe
Token: 35	4420	msdcsc.exe
Token: 36	4420	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
4420	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

f37c39d23241d810bf574afd63d1475a_JaffaCakes118.execmd.exemsdcsc.execmd.exe

description	pid	Process	procid_target
PID 3232 wrote to memory of 4484	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	92
PID 3232 wrote to memory of 4484	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	92
PID 3232 wrote to memory of 4484	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	92
PID 3232 wrote to memory of 2548	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	94
PID 3232 wrote to memory of 2548	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	94
PID 3232 wrote to memory of 2548	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	94
PID 3232 wrote to memory of 4420	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	96
PID 3232 wrote to memory of 4420	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	96
PID 3232 wrote to memory of 4420	3232	f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe	96
PID 4484 wrote to memory of 4580	4484	cmd.exe	98
PID 4484 wrote to memory of 4580	4484	cmd.exe	98
PID 4484 wrote to memory of 4580	4484	cmd.exe	98
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 4420 wrote to memory of 1844	4420	msdcsc.exe	97
PID 2548 wrote to memory of 2612	2548	cmd.exe	99
PID 2548 wrote to memory of 2612	2548	cmd.exe	99
PID 2548 wrote to memory of 2612	2548	cmd.exe	99

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
4580	attrib.exe
2612	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
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4484
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\f37c39d23241d810bf574afd63d1475a_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4580
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2548
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2612
- 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
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4420
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:1844

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

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

Filesize
661KB

MD5
f37c39d23241d810bf574afd63d1475a

SHA1
f9017197fc5726f345f0d2398d42dfbe5e61339d

SHA256
3d3ddbe28d0b0b39a5c64a9cd062593f056a3c9a608073646dfc5e1dd55a7356

SHA512
acf8047755df03a4924e25cda00a09050ed1227bf57353e924d01912108efa46d5b91b68ef27a80764332c88e1b08c8ff4568a4c25f0aff7b0f0dccfd047054c

Download Submit
memory/1844-15-0x0000000001380000-0x0000000001381000-memory.dmp

Filesize
4KB

Download
memory/3232-0-0x0000000000690000-0x0000000000691000-memory.dmp

Filesize
4KB

Download
memory/3232-13-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4420-14-0x00000000007D0000-0x00000000007D1000-memory.dmp

Filesize
4KB

Download
memory/4420-16-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4420-29-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download