darkcomet | 29435b65a13bdb90de14cb350d8b1738c228821ea42cd19f9b2fa6f735cec28b

Analysis

max time kernel
94s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-12-2024 12:41

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General

Target

d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe
Size

881KB
MD5

d9ab6001ab538cf499d2617b8440e3ed
SHA1

f211dca5c14dfe1652f35ebbdb6e14eb52a4da7f
SHA256

29435b65a13bdb90de14cb350d8b1738c228821ea42cd19f9b2fa6f735cec28b
SHA512

d0343ea218acb60bff2ab6bb9d081056a5f03c9c54e746e34dcdd038d6c58bcf817cf69fb96fc4d15d0002589ff4b5161e7b35a723c9a132026a228ac311927f
SSDEEP

24576:5RQkTf4do2SmLV/pYiENV3a7dnE6/ZG5wCOPe:gkTgrVJpxENFa7NE80OCOPe

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

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\\Windupdt\\winupdate.exe"	vbc.exe

Executes dropped EXE 1 IoCs

pid	Process
3620	winupdate.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 388 set thread context of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82

System Location Discovery: System Language Discovery 1 TTPs 5 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	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2092	PING.EXE
2312	cmd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2092	PING.EXE

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4832	vbc.exe
Token: SeSecurityPrivilege	4832	vbc.exe
Token: SeTakeOwnershipPrivilege	4832	vbc.exe
Token: SeLoadDriverPrivilege	4832	vbc.exe
Token: SeSystemProfilePrivilege	4832	vbc.exe
Token: SeSystemtimePrivilege	4832	vbc.exe
Token: SeProfSingleProcessPrivilege	4832	vbc.exe
Token: SeIncBasePriorityPrivilege	4832	vbc.exe
Token: SeCreatePagefilePrivilege	4832	vbc.exe
Token: SeBackupPrivilege	4832	vbc.exe
Token: SeRestorePrivilege	4832	vbc.exe
Token: SeShutdownPrivilege	4832	vbc.exe
Token: SeDebugPrivilege	4832	vbc.exe
Token: SeSystemEnvironmentPrivilege	4832	vbc.exe
Token: SeChangeNotifyPrivilege	4832	vbc.exe
Token: SeRemoteShutdownPrivilege	4832	vbc.exe
Token: SeUndockPrivilege	4832	vbc.exe
Token: SeManageVolumePrivilege	4832	vbc.exe
Token: SeImpersonatePrivilege	4832	vbc.exe
Token: SeCreateGlobalPrivilege	4832	vbc.exe
Token: 33	4832	vbc.exe
Token: 34	4832	vbc.exe
Token: 35	4832	vbc.exe
Token: 36	4832	vbc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 388 wrote to memory of 4832	388	d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe	82
PID 4832 wrote to memory of 3620	4832	vbc.exe	83
PID 4832 wrote to memory of 3620	4832	vbc.exe	83
PID 4832 wrote to memory of 3620	4832	vbc.exe	83
PID 4832 wrote to memory of 2312	4832	vbc.exe	85
PID 4832 wrote to memory of 2312	4832	vbc.exe	85
PID 4832 wrote to memory of 2312	4832	vbc.exe	85
PID 2312 wrote to memory of 2092	2312	cmd.exe	87
PID 2312 wrote to memory of 2092	2312	cmd.exe	87
PID 2312 wrote to memory of 2092	2312	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d9ab6001ab538cf499d2617b8440e3ed_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:388
- 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
  - 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:4832
- - C:\Windows\SysWOW64\Windupdt\winupdate.exe
    "C:\Windows\system32\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3620
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2312
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 5
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2092

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

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\Windupdt\winupdate.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/388-39-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-19-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-10-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-13-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-12-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-11-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-14-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-15-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-17-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-16-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-18-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-24-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-27-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-49-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-48-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-59-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-54-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-53-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-45-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-43-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-37-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-76-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/388-41-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-40-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-38-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-0-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-50-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-36-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-9-0x0000000075CC0000-0x0000000075CC1000-memory.dmp

Filesize
4KB

Download
memory/388-35-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-34-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-32-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-31-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-30-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-26-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-25-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-23-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-21-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-47-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-46-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-44-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-20-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-42-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-33-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-29-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-28-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/388-22-0x00000000009F0000-0x0000000000ABC000-memory.dmp

Filesize
816KB

Download
memory/4832-58-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download
memory/4832-74-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/4832-72-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download
memory/4832-60-0x0000000075CA0000-0x0000000075D90000-memory.dmp

Filesize
960KB

Download
memory/4832-56-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download
memory/4832-55-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads