darkcomet | 66590902797120864dbef0899092c139a15a2a0255864538c9af18df8f4881ca

Analysis

max time kernel
94s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15-12-2024 12:31

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General

Target

f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe
Size

493KB
MD5

f402a16676631d77a2dcb8c046991f00
SHA1

48c4f74248ff71dbd31267da4104e9c892882a2c
SHA256

66590902797120864dbef0899092c139a15a2a0255864538c9af18df8f4881ca
SHA512

97c76ff7c67e514e236d61dd48cdf40053e7283fa918c96aee94d132061b6965f9f0977cf097a97170490995390f9b070fd66bf410561df98f91a1a978aaee3e
SSDEEP

12288:X+Xb/LLjHiVISC1ej9IC5Wh6o5SFMX9TLZebk/KH:XWvLjHlSCUtyRZi

Score

10^/10

darkcomet victim discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Victim

kasual.no-ip.org:1604

Mutex

DC_MUTEX-BJY9NCZ

Attributes

InstallPath
bootmgr
gencode
NdSW8lmR1GU4
install
true
offline_keylogger
true
persistence
false
reg_key
bootmgr

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:\\Windows\\system32\\bootmgr"	vbc.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	vbc.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
1544	attrib.exe
1844	attrib.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bootmgr = "C:\\Windows\\system32\\bootmgr"	vbc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\bootmgr	vbc.exe
File opened for modification	C:\Windows\SysWOW64\	vbc.exe
File created	C:\Windows\SysWOW64\bootmgr	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1960 set thread context of 4892	1960	f402a16676631d77a2dcb8c046991f00_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\vbc.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	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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	attrib.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4892	vbc.exe
Token: SeSecurityPrivilege	4892	vbc.exe
Token: SeTakeOwnershipPrivilege	4892	vbc.exe
Token: SeLoadDriverPrivilege	4892	vbc.exe
Token: SeSystemProfilePrivilege	4892	vbc.exe
Token: SeSystemtimePrivilege	4892	vbc.exe
Token: SeProfSingleProcessPrivilege	4892	vbc.exe
Token: SeIncBasePriorityPrivilege	4892	vbc.exe
Token: SeCreatePagefilePrivilege	4892	vbc.exe
Token: SeBackupPrivilege	4892	vbc.exe
Token: SeRestorePrivilege	4892	vbc.exe
Token: SeShutdownPrivilege	4892	vbc.exe
Token: SeDebugPrivilege	4892	vbc.exe
Token: SeSystemEnvironmentPrivilege	4892	vbc.exe
Token: SeChangeNotifyPrivilege	4892	vbc.exe
Token: SeRemoteShutdownPrivilege	4892	vbc.exe
Token: SeUndockPrivilege	4892	vbc.exe
Token: SeManageVolumePrivilege	4892	vbc.exe
Token: SeImpersonatePrivilege	4892	vbc.exe
Token: SeCreateGlobalPrivilege	4892	vbc.exe
Token: 33	4892	vbc.exe
Token: 34	4892	vbc.exe
Token: 35	4892	vbc.exe
Token: 36	4892	vbc.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 1960 wrote to memory of 4892	1960	f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe	82
PID 4892 wrote to memory of 468	4892	vbc.exe	83
PID 4892 wrote to memory of 468	4892	vbc.exe	83
PID 4892 wrote to memory of 468	4892	vbc.exe	83
PID 4892 wrote to memory of 3144	4892	vbc.exe	84
PID 4892 wrote to memory of 3144	4892	vbc.exe	84
PID 4892 wrote to memory of 3144	4892	vbc.exe	84
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 4892 wrote to memory of 4340	4892	vbc.exe	86
PID 3144 wrote to memory of 1544	3144	cmd.exe	88
PID 3144 wrote to memory of 1544	3144	cmd.exe	88
PID 3144 wrote to memory of 1544	3144	cmd.exe	88
PID 468 wrote to memory of 1844	468	cmd.exe	89
PID 468 wrote to memory of 1844	468	cmd.exe	89
PID 468 wrote to memory of 1844	468	cmd.exe	89

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1544	attrib.exe
1844	attrib.exe

C:\Users\Admin\AppData\Local\Temp\f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f402a16676631d77a2dcb8c046991f00_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in Drivers directory
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4892
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:468
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:1844
- - 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:3144
  - - 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:1544
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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:\Windows\SysWOW64\bootmgr

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/1960-1-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/1960-2-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/1960-0-0x0000000074CA2000-0x0000000074CA3000-memory.dmp

Filesize
4KB

Download
memory/1960-39-0x0000000074CA2000-0x0000000074CA3000-memory.dmp

Filesize
4KB

Download
memory/1960-38-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/1960-6-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/4340-13-0x00000000004F0000-0x00000000004F1000-memory.dmp

Filesize
4KB

Download
memory/4892-3-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4892-8-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4892-7-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4892-5-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4892-4-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4892-40-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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