darkcomet | 4154bf6a7d5e70d9aa7a02bef28bee9210d3e471eedbb08de8483c6874e2730b

Analysis

max time kernel
140s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16/10/2024, 16:02

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General

Target

4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe
Size

808KB
MD5

4dbbec1d181f1e8a146fc15a2de845c0
SHA1

1e45513f89802d5fd9d017e01642c8d742f5cb90
SHA256

4154bf6a7d5e70d9aa7a02bef28bee9210d3e471eedbb08de8483c6874e2730b
SHA512

e5c9a066626a8f7927a6328fb63ca64cafed8bb4b4548f171ef98445f4f51b9953978d4506e4ca45a4e5dc49cf84379f098c7f334a9c1fbf429d20b4b7830e88
SSDEEP

12288:xLRX082vL7tZiF2Mq6CoRKTpi00Mued45cChs/8W5livkT2y95o0MsE:xLu82vL7mDGTpih6xChsHl5DH+

Score

10^/10

darkcomet victime discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Victime

frgtgd.zapto.org:1604

Mutex

DC_MUTEX-7VL74L1

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
PwejF4xZjG4H
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"	cvtres.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
2692	attrib.exe
1348	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
1032	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	cvtres.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3312 set thread context of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.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 8 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	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	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\	cvtres.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	116	cvtres.exe
Token: SeSecurityPrivilege	116	cvtres.exe
Token: SeTakeOwnershipPrivilege	116	cvtres.exe
Token: SeLoadDriverPrivilege	116	cvtres.exe
Token: SeSystemProfilePrivilege	116	cvtres.exe
Token: SeSystemtimePrivilege	116	cvtres.exe
Token: SeProfSingleProcessPrivilege	116	cvtres.exe
Token: SeIncBasePriorityPrivilege	116	cvtres.exe
Token: SeCreatePagefilePrivilege	116	cvtres.exe
Token: SeBackupPrivilege	116	cvtres.exe
Token: SeRestorePrivilege	116	cvtres.exe
Token: SeShutdownPrivilege	116	cvtres.exe
Token: SeDebugPrivilege	116	cvtres.exe
Token: SeSystemEnvironmentPrivilege	116	cvtres.exe
Token: SeChangeNotifyPrivilege	116	cvtres.exe
Token: SeRemoteShutdownPrivilege	116	cvtres.exe
Token: SeUndockPrivilege	116	cvtres.exe
Token: SeManageVolumePrivilege	116	cvtres.exe
Token: SeImpersonatePrivilege	116	cvtres.exe
Token: SeCreateGlobalPrivilege	116	cvtres.exe
Token: 33	116	cvtres.exe
Token: 34	116	cvtres.exe
Token: 35	116	cvtres.exe
Token: 36	116	cvtres.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 3312 wrote to memory of 116	3312	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	87
PID 116 wrote to memory of 4232	116	cvtres.exe	88
PID 116 wrote to memory of 4232	116	cvtres.exe	88
PID 116 wrote to memory of 4232	116	cvtres.exe	88
PID 116 wrote to memory of 2332	116	cvtres.exe	90
PID 116 wrote to memory of 2332	116	cvtres.exe	90
PID 116 wrote to memory of 2332	116	cvtres.exe	90
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 116 wrote to memory of 5100	116	cvtres.exe	91
PID 4232 wrote to memory of 2692	4232	cmd.exe	93
PID 4232 wrote to memory of 2692	4232	cmd.exe	93
PID 4232 wrote to memory of 2692	4232	cmd.exe	93
PID 2332 wrote to memory of 1348	2332	cmd.exe	94
PID 2332 wrote to memory of 1348	2332	cmd.exe	94
PID 2332 wrote to memory of 1348	2332	cmd.exe	94
PID 116 wrote to memory of 1032	116	cvtres.exe	95
PID 116 wrote to memory of 1032	116	cvtres.exe	95
PID 116 wrote to memory of 1032	116	cvtres.exe	95

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2692	attrib.exe
1348	attrib.exe

C:\Users\Admin\AppData\Local\Temp\4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.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:116
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4232
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2692
- - 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:2332
  - - 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:1348
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5100
- - 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:1032

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

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
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
memory/116-3-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/116-4-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/116-6-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/116-7-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/116-9-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/116-71-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3312-0-0x0000000074BF2000-0x0000000074BF3000-memory.dmp

Filesize
4KB

Download
memory/3312-1-0x0000000074BF0000-0x00000000751A1000-memory.dmp

Filesize
5.7MB

Download
memory/3312-2-0x0000000074BF0000-0x00000000751A1000-memory.dmp

Filesize
5.7MB

Download
memory/3312-8-0x0000000074BF0000-0x00000000751A1000-memory.dmp

Filesize
5.7MB

Download
memory/5100-12-0x0000000000ED0000-0x0000000000ED1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads