darkcomet | d71f66fa4e06e143007d504194bc96750044f2c4c12e3686e7758bea4764dbf9

Analysis

max time kernel
137s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-11-2024 02:15

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General

Target

892457023564bf407be05bdf7891e929_JaffaCakes118.exe
Size

1.1MB
MD5

892457023564bf407be05bdf7891e929
SHA1

b0c23dba1302e3d59f3caee7e80eb2b579c78dfd
SHA256

d71f66fa4e06e143007d504194bc96750044f2c4c12e3686e7758bea4764dbf9
SHA512

7f2e02ef498f57635281bedf48d9c32ab84445ae00d45a405a322fd11d1a148268f9eafee31b71a4519602cab3f989d5c353ace91e67890557a731171f4811ea
SSDEEP

12288:qOAxSAZG9JeapEZpzwWCs81+i6fXFeyivRphf2mppgg3+b3L/EGJmP+9OzLTIeJ8:qO6gJMQg18eBEan5qt1g

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

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Testing = "C:\\ProgramData\\Svg64.exe"	892457023564bf407be05bdf7891e929_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	vbc.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3652 set thread context of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 1040 set thread context of 4144	1040	vbc.exe	88

System Location Discovery: System Language Discovery 1 TTPs 2 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	892457023564bf407be05bdf7891e929_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Checks processor information in registry 2 TTPs 7 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	vbc.exe

Enumerates system info in registry 2 TTPs 4 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	vbc.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings	vbc.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
3764	WINWORD.EXE
3764	WINWORD.EXE

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1040	vbc.exe
Token: SeSecurityPrivilege	1040	vbc.exe
Token: SeTakeOwnershipPrivilege	1040	vbc.exe
Token: SeLoadDriverPrivilege	1040	vbc.exe
Token: SeSystemProfilePrivilege	1040	vbc.exe
Token: SeSystemtimePrivilege	1040	vbc.exe
Token: SeProfSingleProcessPrivilege	1040	vbc.exe
Token: SeIncBasePriorityPrivilege	1040	vbc.exe
Token: SeCreatePagefilePrivilege	1040	vbc.exe
Token: SeBackupPrivilege	1040	vbc.exe
Token: SeRestorePrivilege	1040	vbc.exe
Token: SeShutdownPrivilege	1040	vbc.exe
Token: SeDebugPrivilege	1040	vbc.exe
Token: SeSystemEnvironmentPrivilege	1040	vbc.exe
Token: SeChangeNotifyPrivilege	1040	vbc.exe
Token: SeRemoteShutdownPrivilege	1040	vbc.exe
Token: SeUndockPrivilege	1040	vbc.exe
Token: SeManageVolumePrivilege	1040	vbc.exe
Token: SeImpersonatePrivilege	1040	vbc.exe
Token: SeCreateGlobalPrivilege	1040	vbc.exe
Token: 33	1040	vbc.exe
Token: 34	1040	vbc.exe
Token: 35	1040	vbc.exe
Token: 36	1040	vbc.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
3764	WINWORD.EXE
3764	WINWORD.EXE
3764	WINWORD.EXE
3764	WINWORD.EXE
3764	WINWORD.EXE
3764	WINWORD.EXE
3764	WINWORD.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 3652 wrote to memory of 1040	3652	892457023564bf407be05bdf7891e929_JaffaCakes118.exe	84
PID 1040 wrote to memory of 3764	1040	vbc.exe	86
PID 1040 wrote to memory of 3764	1040	vbc.exe	86
PID 1040 wrote to memory of 4144	1040	vbc.exe	88
PID 1040 wrote to memory of 4144	1040	vbc.exe	88
PID 1040 wrote to memory of 4144	1040	vbc.exe	88
PID 1040 wrote to memory of 4144	1040	vbc.exe	88
PID 1040 wrote to memory of 4144	1040	vbc.exe	88

C:\Users\Admin\AppData\Local\Temp\892457023564bf407be05bdf7891e929_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\892457023564bf407be05bdf7891e929_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3652
- 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
  - Checks BIOS information in registry
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1040
- - C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\AESTHETIC PRICE LIST 2011.DOC" /o ""
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious use of SetWindowsHookEx
    PID:3764
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:4144

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

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\AESTHETIC PRICE LIST 2011.DOC

Filesize
19KB

MD5
e9be3a1a96662a958910c44f0b957496

SHA1
b5041253f94aebbf9b6b301e1128665c1bf5f223

SHA256
a739fb1caff2b7b52ea7b340562609a7e601a94c0218ee0c955776eb526dc5a8

SHA512
25b13e08aa38bb3a571ac334f32c64d3dd18b4ffba4aebb91ce88faae2fd3aada443da302b7f71e35cae544eb52aff90f4affa1fb1b1dcc45a6ce20e59da6075

Download Submit
C:\Users\Admin\AppData\Local\Temp\TCDC04E.tmp\sist02.xsl

Filesize
245KB

MD5
f883b260a8d67082ea895c14bf56dd56

SHA1
7954565c1f243d46ad3b1e2f1baf3281451fc14b

SHA256
ef4835db41a485b56c2ef0ff7094bc2350460573a686182bc45fd6613480e353

SHA512
d95924a499f32d9b4d9a7d298502181f9e9048c21dbe0496fa3c3279b263d6f7d594b859111a99b1a53bd248ee69b867d7b1768c42e1e40934e0b990f0ce051e

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\UProof\CUSTOM.DIC

Filesize
16B

MD5
d29962abc88624befc0135579ae485ec

SHA1
e40a6458296ec6a2427bcb280572d023a9862b31

SHA256
a91a702aab9b8dd722843d3d208a21bcfa6556dfc64e2ded63975de4511eb866

SHA512
4311e87d8d5559248d4174908817a4ddc917bf7378114435cf12da8ccb7a1542c851812afbaf7dc106771bdb2e2d05f52e7d0c50d110fc7fffe4395592492c2f

Download Submit
memory/1040-8-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1040-3-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1040-5-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1040-11-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1040-10-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1040-4-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1040-51-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/3652-0-0x0000000074752000-0x0000000074753000-memory.dmp

Filesize
4KB

Download
memory/3652-9-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/3652-2-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/3652-1-0x0000000074750000-0x0000000074D01000-memory.dmp

Filesize
5.7MB

Download
memory/3764-35-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-46-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-28-0x00007FFC7FA10000-0x00007FFC7FA20000-memory.dmp

Filesize
64KB

Download
memory/3764-31-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-30-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-29-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-25-0x00007FFC7FA10000-0x00007FFC7FA20000-memory.dmp

Filesize
64KB

Download
memory/3764-34-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-36-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-37-0x00007FFC7D0B0000-0x00007FFC7D0C0000-memory.dmp

Filesize
64KB

Download
memory/3764-33-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-32-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-39-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-41-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-44-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-27-0x00007FFC7FA10000-0x00007FFC7FA20000-memory.dmp

Filesize
64KB

Download
memory/3764-45-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-23-0x00007FFC7FA10000-0x00007FFC7FA20000-memory.dmp

Filesize
64KB

Download
memory/3764-24-0x00007FFCBFA2D000-0x00007FFCBFA2E000-memory.dmp

Filesize
4KB

Download
memory/3764-43-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-42-0x00007FFC7D0B0000-0x00007FFC7D0C0000-memory.dmp

Filesize
64KB

Download
memory/3764-40-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-38-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-26-0x00007FFC7FA10000-0x00007FFC7FA20000-memory.dmp

Filesize
64KB

Download
memory/3764-79-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-80-0x00007FFCBFA2D000-0x00007FFCBFA2E000-memory.dmp

Filesize
4KB

Download
memory/3764-81-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/3764-84-0x00007FFCBF990000-0x00007FFCBFB85000-memory.dmp

Filesize
2.0MB

Download
memory/4144-47-0x0000000000400000-0x000000000051F000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads