darkcomet | c37f15a3cfe8fd09c43d542117b650d202a86cd95b0dec645c943f8a8ed5208e

Analysis

max time kernel
149s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-12-2024 06:57

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General

Target

e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe
Size

808KB
MD5

e5379715dd0f4de193007edcd19852dd
SHA1

489920ca30cc192d100f7c0fe96933ff0760ba11
SHA256

c37f15a3cfe8fd09c43d542117b650d202a86cd95b0dec645c943f8a8ed5208e
SHA512

16f952c5ada2f2c2085b5e89bd61b95b9258f4b503618c37d1f91724a4d6bfddfc468fa3b58a987b28bd19218b2747a0bdb5d06a16c2c1a78dca74b21a4dea9b
SSDEEP

24576:VQ2JWUJsF1zwstoajoZ3pbst90tmTnF9Tx:ruFSsHjk5bK7XTx

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

piwas12.no-ip.org:1604

Mutex

DC_MUTEX-VRNRLEB

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
gZnZNxWUT9Vy
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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:\\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
2496	attrib.exe
4024	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
4876	msdcsc.exe

Adds Run key to start application 2 TTPs 2 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\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe"	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe
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 3556 set thread context of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82

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 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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.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 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1104	cvtres.exe
Token: SeSecurityPrivilege	1104	cvtres.exe
Token: SeTakeOwnershipPrivilege	1104	cvtres.exe
Token: SeLoadDriverPrivilege	1104	cvtres.exe
Token: SeSystemProfilePrivilege	1104	cvtres.exe
Token: SeSystemtimePrivilege	1104	cvtres.exe
Token: SeProfSingleProcessPrivilege	1104	cvtres.exe
Token: SeIncBasePriorityPrivilege	1104	cvtres.exe
Token: SeCreatePagefilePrivilege	1104	cvtres.exe
Token: SeBackupPrivilege	1104	cvtres.exe
Token: SeRestorePrivilege	1104	cvtres.exe
Token: SeShutdownPrivilege	1104	cvtres.exe
Token: SeDebugPrivilege	1104	cvtres.exe
Token: SeSystemEnvironmentPrivilege	1104	cvtres.exe
Token: SeChangeNotifyPrivilege	1104	cvtres.exe
Token: SeRemoteShutdownPrivilege	1104	cvtres.exe
Token: SeUndockPrivilege	1104	cvtres.exe
Token: SeManageVolumePrivilege	1104	cvtres.exe
Token: SeImpersonatePrivilege	1104	cvtres.exe
Token: SeCreateGlobalPrivilege	1104	cvtres.exe
Token: 33	1104	cvtres.exe
Token: 34	1104	cvtres.exe
Token: 35	1104	cvtres.exe
Token: 36	1104	cvtres.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 3556 wrote to memory of 1104	3556	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	82
PID 1104 wrote to memory of 2928	1104	cvtres.exe	83
PID 1104 wrote to memory of 2928	1104	cvtres.exe	83
PID 1104 wrote to memory of 2928	1104	cvtres.exe	83
PID 1104 wrote to memory of 752	1104	cvtres.exe	84
PID 1104 wrote to memory of 752	1104	cvtres.exe	84
PID 1104 wrote to memory of 752	1104	cvtres.exe	84
PID 752 wrote to memory of 2496	752	cmd.exe	87
PID 752 wrote to memory of 2496	752	cmd.exe	87
PID 752 wrote to memory of 2496	752	cmd.exe	87
PID 2928 wrote to memory of 4024	2928	cmd.exe	88
PID 2928 wrote to memory of 4024	2928	cmd.exe	88
PID 2928 wrote to memory of 4024	2928	cmd.exe	88
PID 1104 wrote to memory of 4876	1104	cvtres.exe	89
PID 1104 wrote to memory of 4876	1104	cvtres.exe	89
PID 1104 wrote to memory of 4876	1104	cvtres.exe	89

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2496	attrib.exe
4024	attrib.exe

C:\Users\Admin\AppData\Local\Temp\e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3556
- 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:1104
- - 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:2928
  - - 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:4024
- - 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:752
  - - 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:2496
- - 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:4876

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/1104-7-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/1104-4-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/1104-5-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/1104-6-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/1104-8-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/1104-69-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/3556-2-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/3556-0-0x0000000075162000-0x0000000075163000-memory.dmp

Filesize
4KB

Download
memory/3556-1-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/3556-71-0x0000000075162000-0x0000000075163000-memory.dmp

Filesize
4KB

Download
memory/3556-72-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/3556-73-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads