darkcomet | 70b3769b7fde9e790cf054af2bac07c84a9659dd49a8bc4e4378bdc30ddd5bd2

Analysis

max time kernel
95s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 09:43

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General

Target

bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe
Size

851KB
MD5

bccda777a8abe59f3e1c1c9774b90e9f
SHA1

1326bd3cf3b7d86000984ad923edfe76ee39336c
SHA256

70b3769b7fde9e790cf054af2bac07c84a9659dd49a8bc4e4378bdc30ddd5bd2
SHA512

99c0a7f1168f59030495f77336fe0fe3892d8f0b08b9ed006496938b5794ba213fc9e2b92e27009aa39d5089b5adbf29886308b990e69e95c74da0984f9311cc
SSDEEP

12288:FnSkLgPc+w5IkKnSSU5cL5TQ+YmKzRLROI9N8iSUUvIRBAzH:xuc1I/SSDlPYRLRVj/UwRizH

Score

10^/10

darkcomet legit discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Legit

glasz.no-ip.org:200

Mutex

DC_MUTEX-7V8VVQ0

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
sUPjlHsZGjFy
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:\\Users\\Admin\\AppData\\Local\\Temp\\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
1796	attrib.exe
4660	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2760	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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	cvtres.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 816 set thread context of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	cvtres.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4700	cvtres.exe
Token: SeSecurityPrivilege	4700	cvtres.exe
Token: SeTakeOwnershipPrivilege	4700	cvtres.exe
Token: SeLoadDriverPrivilege	4700	cvtres.exe
Token: SeSystemProfilePrivilege	4700	cvtres.exe
Token: SeSystemtimePrivilege	4700	cvtres.exe
Token: SeProfSingleProcessPrivilege	4700	cvtres.exe
Token: SeIncBasePriorityPrivilege	4700	cvtres.exe
Token: SeCreatePagefilePrivilege	4700	cvtres.exe
Token: SeBackupPrivilege	4700	cvtres.exe
Token: SeRestorePrivilege	4700	cvtres.exe
Token: SeShutdownPrivilege	4700	cvtres.exe
Token: SeDebugPrivilege	4700	cvtres.exe
Token: SeSystemEnvironmentPrivilege	4700	cvtres.exe
Token: SeChangeNotifyPrivilege	4700	cvtres.exe
Token: SeRemoteShutdownPrivilege	4700	cvtres.exe
Token: SeUndockPrivilege	4700	cvtres.exe
Token: SeManageVolumePrivilege	4700	cvtres.exe
Token: SeImpersonatePrivilege	4700	cvtres.exe
Token: SeCreateGlobalPrivilege	4700	cvtres.exe
Token: 33	4700	cvtres.exe
Token: 34	4700	cvtres.exe
Token: 35	4700	cvtres.exe
Token: 36	4700	cvtres.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 4700	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	82
PID 816 wrote to memory of 772	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	84
PID 816 wrote to memory of 772	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	84
PID 816 wrote to memory of 772	816	bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe	84
PID 4700 wrote to memory of 4676	4700	cvtres.exe	83
PID 4700 wrote to memory of 4676	4700	cvtres.exe	83
PID 4700 wrote to memory of 4676	4700	cvtres.exe	83
PID 4700 wrote to memory of 2464	4700	cvtres.exe	85
PID 4700 wrote to memory of 2464	4700	cvtres.exe	85
PID 4700 wrote to memory of 2464	4700	cvtres.exe	85
PID 4676 wrote to memory of 1796	4676	cmd.exe	88
PID 4676 wrote to memory of 1796	4676	cmd.exe	88
PID 4676 wrote to memory of 1796	4676	cmd.exe	88
PID 2464 wrote to memory of 4660	2464	cmd.exe	89
PID 2464 wrote to memory of 4660	2464	cmd.exe	89
PID 2464 wrote to memory of 4660	2464	cmd.exe	89
PID 4700 wrote to memory of 2760	4700	cvtres.exe	91
PID 4700 wrote to memory of 2760	4700	cvtres.exe	91
PID 4700 wrote to memory of 2760	4700	cvtres.exe	91

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1796	attrib.exe
4660	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bccda777a8abe59f3e1c1c9774b90e9f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:816
- 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:4700
- - 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:4676
  - - 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:1796
- - 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:2464
  - - 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:4660
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2760
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\zUaqC.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:772

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

Query Registry

T1012

System Information Discovery

T1082

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\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\zUaqC.vbs

Filesize
408B

MD5
1dfca4a085536d0351398141ec4ad428

SHA1
8fb8cb61367c01807426c681633d77a086b6980f

SHA256
0be4987a21b264b8ff1f7b926d2204b9e4c6b85e76c311b9b2f923376207aa48

SHA512
5d52ac8355ac97f06860694e467f0b85c0a200d4bc84a50c2a808fbfcecbeda1f0b27af359ded52595ef630c3e4e2d813ce03e6327633d7316fdff8e1dc4d91a

Download Submit
memory/816-0-0x0000000075522000-0x0000000075523000-memory.dmp

Filesize
4KB

Download
memory/816-1-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/816-2-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/816-18-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/4700-3-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/4700-5-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/4700-6-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/4700-7-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/4700-8-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/4700-78-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads