darkcomet | 4154bf6a7d5e70d9aa7a02bef28bee9210d3e471eedbb08de8483c6874e2730b

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
2572	attrib.exe
2620	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
1684	msdcsc.exe

Loads dropped DLL 1 IoCs

pid	Process
2188	cvtres.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-1-5-21-312935884-697965778-3955649944-1000\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 1716 set thread context of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28

Drops file in Windows directory 2 IoCs

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

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2188	cvtres.exe
Token: SeSecurityPrivilege	2188	cvtres.exe
Token: SeTakeOwnershipPrivilege	2188	cvtres.exe
Token: SeLoadDriverPrivilege	2188	cvtres.exe
Token: SeSystemProfilePrivilege	2188	cvtres.exe
Token: SeSystemtimePrivilege	2188	cvtres.exe
Token: SeProfSingleProcessPrivilege	2188	cvtres.exe
Token: SeIncBasePriorityPrivilege	2188	cvtres.exe
Token: SeCreatePagefilePrivilege	2188	cvtres.exe
Token: SeBackupPrivilege	2188	cvtres.exe
Token: SeRestorePrivilege	2188	cvtres.exe
Token: SeShutdownPrivilege	2188	cvtres.exe
Token: SeDebugPrivilege	2188	cvtres.exe
Token: SeSystemEnvironmentPrivilege	2188	cvtres.exe
Token: SeChangeNotifyPrivilege	2188	cvtres.exe
Token: SeRemoteShutdownPrivilege	2188	cvtres.exe
Token: SeUndockPrivilege	2188	cvtres.exe
Token: SeManageVolumePrivilege	2188	cvtres.exe
Token: SeImpersonatePrivilege	2188	cvtres.exe
Token: SeCreateGlobalPrivilege	2188	cvtres.exe
Token: 33	2188	cvtres.exe
Token: 34	2188	cvtres.exe
Token: 35	2188	cvtres.exe

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 1716 wrote to memory of 2188	1716	4dbbec1d181f1e8a146fc15a2de845c0_JaffaCakes118.exe	28
PID 2188 wrote to memory of 2232	2188	cvtres.exe	29
PID 2188 wrote to memory of 2232	2188	cvtres.exe	29
PID 2188 wrote to memory of 2232	2188	cvtres.exe	29
PID 2188 wrote to memory of 2232	2188	cvtres.exe	29
PID 2188 wrote to memory of 2804	2188	cvtres.exe	30
PID 2188 wrote to memory of 2804	2188	cvtres.exe	30
PID 2188 wrote to memory of 2804	2188	cvtres.exe	30
PID 2188 wrote to memory of 2804	2188	cvtres.exe	30
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2188 wrote to memory of 2788	2188	cvtres.exe	31
PID 2232 wrote to memory of 2620	2232	cmd.exe	35
PID 2232 wrote to memory of 2620	2232	cmd.exe	35
PID 2232 wrote to memory of 2620	2232	cmd.exe	35
PID 2232 wrote to memory of 2620	2232	cmd.exe	35
PID 2804 wrote to memory of 2572	2804	cmd.exe	34
PID 2804 wrote to memory of 2572	2804	cmd.exe	34
PID 2804 wrote to memory of 2572	2804	cmd.exe	34
PID 2804 wrote to memory of 2572	2804	cmd.exe	34
PID 2188 wrote to memory of 1684	2188	cvtres.exe	36
PID 2188 wrote to memory of 1684	2188	cvtres.exe	36
PID 2188 wrote to memory of 1684	2188	cvtres.exe	36
PID 2188 wrote to memory of 1684	2188	cvtres.exe	36

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2620	attrib.exe
2572	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:1716
- 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
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2188
- - 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:2232
  - - 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:2620
- - 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:2804
  - - 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:2572
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2788
- - 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:1684

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

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

Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Download Submit
memory/1716-0-0x00000000745B1000-0x00000000745B2000-memory.dmp

Filesize
4KB

Download
memory/1716-1-0x00000000745B0000-0x0000000074B5B000-memory.dmp

Filesize
5.7MB

Download
memory/1716-2-0x00000000745B0000-0x0000000074B5B000-memory.dmp

Filesize
5.7MB

Download
memory/1716-22-0x00000000745B0000-0x0000000074B5B000-memory.dmp

Filesize
5.7MB

Download
memory/2188-19-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-11-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-10-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-9-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-7-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-5-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2188-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-15-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-48-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2188-3-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2788-42-0x00000000003E0000-0x0000000000410000-memory.dmp

Filesize
192KB

Download
memory/2788-41-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/2788-27-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2788-51-0x00000000003E0000-0x0000000000410000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads