darkcomet | e5e69a6982bda014dc72e4f790a2548f6f9f171bd35233c1665447cfcb96b288

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2025, 20:26

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General

Target

JaffaCakes118_9805732917b4f66d8aaa64f4a90f352d.exe
Size

1.1MB
MD5

9805732917b4f66d8aaa64f4a90f352d
SHA1

c040a489a44ba1fe1d20ad30033b190703983241
SHA256

e5e69a6982bda014dc72e4f790a2548f6f9f171bd35233c1665447cfcb96b288
SHA512

c474a2826ce77d21116fa86b9211bfed256379ff01ffcc7b33f0645fe618f08ccc7bb3ad93d44cf8bd7c871b948deb3fc948777c48549045e1b76d4011c63643
SSDEEP

24576:7FE//Tct4bOsjItd3vCveCXERUAQJGAuKZLjvBWJVaTE:RSVjIr3vnCXERUZJbuKhjvB2aTE

Score

10^/10

darkcomet guest16 defense_evasion discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

vertexking.no-ip.org:999

Mutex

DC_MUTEX-LQMAH1E

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
5TwUP1XxSqk2
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

rc4.plain

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:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	uncrypted.exe

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2136	attrib.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3920955164-3782810283-1225622749-1000\Control Panel\International\Geo\Nation	JaffaCakes118_9805732917b4f66d8aaa64f4a90f352d.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3920955164-3782810283-1225622749-1000\Control Panel\International\Geo\Nation	uncrypted.exe

Executes dropped EXE 2 IoCs

pid	Process
3920	uncrypted.exe
4484	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-1-5-21-3920955164-3782810283-1225622749-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	uncrypted.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/2544-20-0x0000000000400000-0x00000000004DF000-memory.dmp	autoit_exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	uncrypted.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	uncrypted.exe
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	uncrypted.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2544-0-0x0000000000400000-0x00000000004DF000-memory.dmp	upx
behavioral2/memory/2544-20-0x0000000000400000-0x00000000004DF000-memory.dmp	upx

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 6 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	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9805732917b4f66d8aaa64f4a90f352d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uncrypted.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
4484	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3920	uncrypted.exe
Token: SeSecurityPrivilege	3920	uncrypted.exe
Token: SeTakeOwnershipPrivilege	3920	uncrypted.exe
Token: SeLoadDriverPrivilege	3920	uncrypted.exe
Token: SeSystemProfilePrivilege	3920	uncrypted.exe
Token: SeSystemtimePrivilege	3920	uncrypted.exe
Token: SeProfSingleProcessPrivilege	3920	uncrypted.exe
Token: SeIncBasePriorityPrivilege	3920	uncrypted.exe
Token: SeCreatePagefilePrivilege	3920	uncrypted.exe
Token: SeBackupPrivilege	3920	uncrypted.exe
Token: SeRestorePrivilege	3920	uncrypted.exe
Token: SeShutdownPrivilege	3920	uncrypted.exe
Token: SeDebugPrivilege	3920	uncrypted.exe
Token: SeSystemEnvironmentPrivilege	3920	uncrypted.exe
Token: SeChangeNotifyPrivilege	3920	uncrypted.exe
Token: SeRemoteShutdownPrivilege	3920	uncrypted.exe
Token: SeUndockPrivilege	3920	uncrypted.exe
Token: SeManageVolumePrivilege	3920	uncrypted.exe
Token: SeImpersonatePrivilege	3920	uncrypted.exe
Token: SeCreateGlobalPrivilege	3920	uncrypted.exe
Token: 33	3920	uncrypted.exe
Token: 34	3920	uncrypted.exe
Token: 35	3920	uncrypted.exe
Token: 36	3920	uncrypted.exe
Token: SeIncreaseQuotaPrivilege	4484	msdcsc.exe
Token: SeSecurityPrivilege	4484	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4484	msdcsc.exe
Token: SeLoadDriverPrivilege	4484	msdcsc.exe
Token: SeSystemProfilePrivilege	4484	msdcsc.exe
Token: SeSystemtimePrivilege	4484	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4484	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4484	msdcsc.exe
Token: SeCreatePagefilePrivilege	4484	msdcsc.exe
Token: SeBackupPrivilege	4484	msdcsc.exe
Token: SeRestorePrivilege	4484	msdcsc.exe
Token: SeShutdownPrivilege	4484	msdcsc.exe
Token: SeDebugPrivilege	4484	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4484	msdcsc.exe
Token: SeChangeNotifyPrivilege	4484	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4484	msdcsc.exe
Token: SeUndockPrivilege	4484	msdcsc.exe
Token: SeManageVolumePrivilege	4484	msdcsc.exe
Token: SeImpersonatePrivilege	4484	msdcsc.exe
Token: SeCreateGlobalPrivilege	4484	msdcsc.exe
Token: 33	4484	msdcsc.exe
Token: 34	4484	msdcsc.exe
Token: 35	4484	msdcsc.exe
Token: 36	4484	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4484	msdcsc.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 3920	2544	JaffaCakes118_9805732917b4f66d8aaa64f4a90f352d.exe	87
PID 2544 wrote to memory of 3920	2544	JaffaCakes118_9805732917b4f66d8aaa64f4a90f352d.exe	87
PID 2544 wrote to memory of 3920	2544	JaffaCakes118_9805732917b4f66d8aaa64f4a90f352d.exe	87
PID 3920 wrote to memory of 4956	3920	uncrypted.exe	92
PID 3920 wrote to memory of 4956	3920	uncrypted.exe	92
PID 3920 wrote to memory of 4956	3920	uncrypted.exe	92
PID 3920 wrote to memory of 4484	3920	uncrypted.exe	94
PID 3920 wrote to memory of 4484	3920	uncrypted.exe	94
PID 3920 wrote to memory of 4484	3920	uncrypted.exe	94
PID 4956 wrote to memory of 2136	4956	cmd.exe	97
PID 4956 wrote to memory of 2136	4956	cmd.exe	97
PID 4956 wrote to memory of 2136	4956	cmd.exe	97
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96
PID 4484 wrote to memory of 4764	4484	msdcsc.exe	96

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2136	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9805732917b4f66d8aaa64f4a90f352d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9805732917b4f66d8aaa64f4a90f352d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Users\Admin\AppData\Local\Temp\uncrypted.exe
  "C:\Users\Admin\AppData\Local\Temp\uncrypted.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3920
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4956
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2136
- - C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
    "C:\Windows\system32\MSDCSC\msdcsc.exe"
    3⤵
    - 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:4484
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:4764

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Windows\system32\MSDCSC\msdcsc.exe
1⤵
PID:4904

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\AppData\Local\Temp\aut6E2B.tmp

Filesize
673KB

MD5
3fe0ca1449993f6a22ad86a0cdfe4051

SHA1
259dda1ceb354c458e08c576d5a686de443705c7

SHA256
9dac566b2fb9b13843854efbb662642c8427e698dbc2d2ded4bbb3b7089bcf09

SHA512
798a3e1123204ba17e66f577522f1dd877b533c8a6ee997c0f21a1d47633c0e5ad1fffc6be78056a195ab904bc6f25cbd47973d8b521d123c19a2e3b97fe3978

Download Submit
C:\Users\Admin\AppData\Local\Temp\uncrypted.exe

Filesize
673KB

MD5
d2922511968925268f1f47351db07054

SHA1
96ca2c1acdcc624e3efcf95b39779afccf560fe1

SHA256
c0effd1232400ed858c00c79df95d64175fe4ceea6f0acbe25b6a7285cb5c7e8

SHA512
64e76e5322ea7170330ae6e025d6c44c4375c25b71e76fe2936f184e2419eeda1cac6b8edffc3252e4bfa3c82fbc2d4410b2044fd0dab525a65adcea7b43da22

Download Submit
memory/2544-20-0x0000000000400000-0x00000000004DF000-memory.dmp

Filesize
892KB

Download
memory/2544-0-0x0000000000400000-0x00000000004DF000-memory.dmp

Filesize
892KB

Download
memory/3920-35-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/3920-21-0x0000000002850000-0x0000000002851000-memory.dmp

Filesize
4KB

Download
memory/4484-44-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-42-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-37-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-38-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-39-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-40-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-41-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-36-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-43-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-49-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-45-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-46-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-47-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4484-48-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4764-34-0x0000000001030000-0x0000000001031000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads