darkcomet | ac4c799664c65e33c1cb19c183faadba788c0d299b9647c4b890e388fe3202b5

Analysis

max time kernel
140s
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
22/10/2024, 02:20

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General

Target

6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe
Size

1.7MB
MD5

6873cbc43eb2744035978b4ab6c748a0
SHA1

f1a444ed188e974d4c4ada2754a672e986a74557
SHA256

ac4c799664c65e33c1cb19c183faadba788c0d299b9647c4b890e388fe3202b5
SHA512

5fa49323134c66549db5fc75c87ae8a6a3a69235d3175ebddc5bbc78fe6264bcb38a713a60f011201415cd72fb93f9257a3f866e29d3a73de43d94a772dbb6b1
SSDEEP

24576:3e/OhglHQEgBM4RsioUYpbNejT1C6H+e6UGwji:3yO45i/o6HLjji

Score

10^/10

darkcomet discovery evasion persistence rat trojan

Malware Config

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"	vbc.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
2852	attrib.exe
4860	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
632	msdcsc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3212 set thread context of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe

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	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Modifies registry class 1 IoCs

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

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3616	vbc.exe
Token: SeSecurityPrivilege	3616	vbc.exe
Token: SeTakeOwnershipPrivilege	3616	vbc.exe
Token: SeLoadDriverPrivilege	3616	vbc.exe
Token: SeSystemProfilePrivilege	3616	vbc.exe
Token: SeSystemtimePrivilege	3616	vbc.exe
Token: SeProfSingleProcessPrivilege	3616	vbc.exe
Token: SeIncBasePriorityPrivilege	3616	vbc.exe
Token: SeCreatePagefilePrivilege	3616	vbc.exe
Token: SeBackupPrivilege	3616	vbc.exe
Token: SeRestorePrivilege	3616	vbc.exe
Token: SeShutdownPrivilege	3616	vbc.exe
Token: SeDebugPrivilege	3616	vbc.exe
Token: SeSystemEnvironmentPrivilege	3616	vbc.exe
Token: SeChangeNotifyPrivilege	3616	vbc.exe
Token: SeRemoteShutdownPrivilege	3616	vbc.exe
Token: SeUndockPrivilege	3616	vbc.exe
Token: SeManageVolumePrivilege	3616	vbc.exe
Token: SeImpersonatePrivilege	3616	vbc.exe
Token: SeCreateGlobalPrivilege	3616	vbc.exe
Token: 33	3616	vbc.exe
Token: 34	3616	vbc.exe
Token: 35	3616	vbc.exe
Token: 36	3616	vbc.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3212 wrote to memory of 3616	3212	6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe	84
PID 3616 wrote to memory of 3076	3616	vbc.exe	85
PID 3616 wrote to memory of 3076	3616	vbc.exe	85
PID 3616 wrote to memory of 3076	3616	vbc.exe	85
PID 3616 wrote to memory of 2052	3616	vbc.exe	87
PID 3616 wrote to memory of 2052	3616	vbc.exe	87
PID 3616 wrote to memory of 2052	3616	vbc.exe	87
PID 3076 wrote to memory of 4860	3076	cmd.exe	90
PID 3076 wrote to memory of 4860	3076	cmd.exe	90
PID 3076 wrote to memory of 4860	3076	cmd.exe	90
PID 2052 wrote to memory of 2852	2052	cmd.exe	91
PID 2052 wrote to memory of 2852	2052	cmd.exe	91
PID 2052 wrote to memory of 2852	2052	cmd.exe	91
PID 3616 wrote to memory of 632	3616	vbc.exe	92
PID 3616 wrote to memory of 632	3616	vbc.exe	92
PID 3616 wrote to memory of 632	3616	vbc.exe	92

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4860	attrib.exe
2852	attrib.exe

C:\Users\Admin\AppData\Local\Temp\6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6873cbc43eb2744035978b4ab6c748a0_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3212
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3616
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3076
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:4860
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2052
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2852
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

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
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/3212-0-0x0000000074A92000-0x0000000074A93000-memory.dmp

Filesize
4KB

Download
memory/3212-1-0x0000000074A90000-0x0000000075041000-memory.dmp

Filesize
5.7MB

Download
memory/3212-2-0x0000000074A90000-0x0000000075041000-memory.dmp

Filesize
5.7MB

Download
memory/3212-13-0x0000000074A90000-0x0000000075041000-memory.dmp

Filesize
5.7MB

Download
memory/3616-3-0x0000000000400000-0x0000000000505000-memory.dmp

Filesize
1.0MB

Download
memory/3616-4-0x0000000000400000-0x0000000000505000-memory.dmp

Filesize
1.0MB

Download
memory/3616-6-0x0000000000400000-0x0000000000505000-memory.dmp

Filesize
1.0MB

Download
memory/3616-7-0x0000000000400000-0x0000000000505000-memory.dmp

Filesize
1.0MB

Download
memory/3616-8-0x0000000000400000-0x0000000000505000-memory.dmp

Filesize
1.0MB

Download
memory/3616-69-0x0000000000400000-0x0000000000505000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads