darkcomet | 776d7d11b5d27b5b3a713f3839fd7128e05fa6a9134fa2fed9b2928e59852322

Analysis

max time kernel
94s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04/01/2025, 18:31

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General

Target

JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe
Size

797KB
MD5

7b2c058c92c0bfcdc36f6eb6bcd0f66b
SHA1

c7eb1f8c37df44d4f5560f1734dafdd12ed6477e
SHA256

776d7d11b5d27b5b3a713f3839fd7128e05fa6a9134fa2fed9b2928e59852322
SHA512

328816178c32125b73c01d03bd9670ae703e3a35c11c53e0ebbe43a9739b14ba2e77fa26be0cf215add3e2766035342253d668cb5b3f3012a172c18e60e8bec4
SSDEEP

12288:QQLcijICEZ+6vFkqeXGvyxngsm/CEUCR264lGYxtFYB6dsqvPMySJR2SePaG1vhW:ZcfZxFTKn8/+CR26gGYxUYFvPMygGBW

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

imdaco.no-ip.org:1604

Mutex

DC_MUTEX-L9KM9Y7

Attributes

InstallPath
MSDCS\Rundll32.exe
gencode
LJp33LCadVtB
install
true
offline_keylogger
true
persistence
true
reg_key
Rundll32

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:\\MSDCS\\Rundll32.exe"	csc.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
216	attrib.exe
4132	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
1412	Rundll32.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rundll32 = "C:\\MSDCS\\Rundll32.exe"	csc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3852 set thread context of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.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	Rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
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

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1732	csc.exe
Token: SeSecurityPrivilege	1732	csc.exe
Token: SeTakeOwnershipPrivilege	1732	csc.exe
Token: SeLoadDriverPrivilege	1732	csc.exe
Token: SeSystemProfilePrivilege	1732	csc.exe
Token: SeSystemtimePrivilege	1732	csc.exe
Token: SeProfSingleProcessPrivilege	1732	csc.exe
Token: SeIncBasePriorityPrivilege	1732	csc.exe
Token: SeCreatePagefilePrivilege	1732	csc.exe
Token: SeBackupPrivilege	1732	csc.exe
Token: SeRestorePrivilege	1732	csc.exe
Token: SeShutdownPrivilege	1732	csc.exe
Token: SeDebugPrivilege	1732	csc.exe
Token: SeSystemEnvironmentPrivilege	1732	csc.exe
Token: SeChangeNotifyPrivilege	1732	csc.exe
Token: SeRemoteShutdownPrivilege	1732	csc.exe
Token: SeUndockPrivilege	1732	csc.exe
Token: SeManageVolumePrivilege	1732	csc.exe
Token: SeImpersonatePrivilege	1732	csc.exe
Token: SeCreateGlobalPrivilege	1732	csc.exe
Token: 33	1732	csc.exe
Token: 34	1732	csc.exe
Token: 35	1732	csc.exe
Token: 36	1732	csc.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 3852 wrote to memory of 1732	3852	JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe	83
PID 1732 wrote to memory of 3164	1732	csc.exe	84
PID 1732 wrote to memory of 3164	1732	csc.exe	84
PID 1732 wrote to memory of 3164	1732	csc.exe	84
PID 1732 wrote to memory of 2140	1732	csc.exe	85
PID 1732 wrote to memory of 2140	1732	csc.exe	85
PID 1732 wrote to memory of 2140	1732	csc.exe	85
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 1732 wrote to memory of 2160	1732	csc.exe	87
PID 3164 wrote to memory of 216	3164	cmd.exe	89
PID 3164 wrote to memory of 216	3164	cmd.exe	89
PID 3164 wrote to memory of 216	3164	cmd.exe	89
PID 2140 wrote to memory of 4132	2140	cmd.exe	90
PID 2140 wrote to memory of 4132	2140	cmd.exe	90
PID 2140 wrote to memory of 4132	2140	cmd.exe	90
PID 1732 wrote to memory of 1412	1732	csc.exe	91
PID 1732 wrote to memory of 1412	1732	csc.exe	91
PID 1732 wrote to memory of 1412	1732	csc.exe	91

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
216	attrib.exe
4132	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b2c058c92c0bfcdc36f6eb6bcd0f66b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3852
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1732
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3164
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:216
- - 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:2140
  - - 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:4132
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2160
- - C:\MSDCS\Rundll32.exe
    "C:\MSDCS\Rundll32.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1412

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:\MSDCS\Rundll32.exe

Filesize
78KB

MD5
2b9482eb5d3af71029277e18f6c656c0

SHA1
d594dc39c6e5f8fbd145d8970e096dc1d9b4a7f1

SHA256
1be7a63415f03400065f2beb2ca991c8b0b914bd41310cf9dd93c5e1fc0ed072

SHA512
46abaf2e57e498dd60352f76b484825eff7ebdd89cf512ba046d229d5d24a34e5f67c48a1d59551e0b49603a1ffee2ffbc124eef0042ddf3fe7fae423b4af0a8

Download Submit
memory/1732-3-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1732-4-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1732-6-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1732-7-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1732-8-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1732-48-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2160-13-0x0000000000F90000-0x0000000000F91000-memory.dmp

Filesize
4KB

Download
memory/3852-0-0x0000000074932000-0x0000000074933000-memory.dmp

Filesize
4KB

Download
memory/3852-1-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3852-2-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3852-9-0x0000000074930000-0x0000000074EE1000-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