darkcomet | c6fda4c45f1df9cbcc6054256dbe73fd89a332fc8ff8552347c46a6dc364da97

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-12-2024 01:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe
Size

737KB
MD5

df59496ce9d9eba8bfc447c066650a04
SHA1

845003070ae7d41c5770dc7805f9d880ed525f56
SHA256

c6fda4c45f1df9cbcc6054256dbe73fd89a332fc8ff8552347c46a6dc364da97
SHA512

eb39eefadcdb7856c4bd44cc9079c1d84093e4fc6fb3ef94a7438d24b5d3b7eaba6c5b6a8a2c81ca3ea79493e3809d611b76add347b72447935040ddbecf066b
SSDEEP

12288:sJmHQJV+Q9zFIs9i3s7Q6jcIaVCc+ZfSpCzrxXUd42/RhSGnfMPxvCVEwVZCJg:sJm+zOsg3snE4c+ZfSp0rxXO42pAcK5e

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

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

Executes dropped EXE 1 IoCs

pid	Process
2580	winupdate.exe

Loads dropped DLL 1 IoCs

pid	Process
2812	vbc.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-1-5-21-3063565911-2056067323-3330884624-1000\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 created	C:\Windows\SysWOW64\Windupdt\winupdate.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\winupdate.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2676 set thread context of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30

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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df59496ce9d9eba8bfc447c066650a04_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

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

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1092	PING.EXE

Checks processor information in registry 2 TTPs 4 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	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 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1092	PING.EXE

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2812	vbc.exe
Token: SeSecurityPrivilege	2812	vbc.exe
Token: SeTakeOwnershipPrivilege	2812	vbc.exe
Token: SeLoadDriverPrivilege	2812	vbc.exe
Token: SeSystemProfilePrivilege	2812	vbc.exe
Token: SeSystemtimePrivilege	2812	vbc.exe
Token: SeProfSingleProcessPrivilege	2812	vbc.exe
Token: SeIncBasePriorityPrivilege	2812	vbc.exe
Token: SeCreatePagefilePrivilege	2812	vbc.exe
Token: SeBackupPrivilege	2812	vbc.exe
Token: SeRestorePrivilege	2812	vbc.exe
Token: SeShutdownPrivilege	2812	vbc.exe
Token: SeDebugPrivilege	2812	vbc.exe
Token: SeSystemEnvironmentPrivilege	2812	vbc.exe
Token: SeChangeNotifyPrivilege	2812	vbc.exe
Token: SeRemoteShutdownPrivilege	2812	vbc.exe
Token: SeUndockPrivilege	2812	vbc.exe
Token: SeManageVolumePrivilege	2812	vbc.exe
Token: SeImpersonatePrivilege	2812	vbc.exe
Token: SeCreateGlobalPrivilege	2812	vbc.exe
Token: 33	2812	vbc.exe
Token: 34	2812	vbc.exe
Token: 35	2812	vbc.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2676 wrote to memory of 2812	2676	df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe	30
PID 2812 wrote to memory of 2580	2812	vbc.exe	31
PID 2812 wrote to memory of 2580	2812	vbc.exe	31
PID 2812 wrote to memory of 2580	2812	vbc.exe	31
PID 2812 wrote to memory of 2580	2812	vbc.exe	31
PID 2812 wrote to memory of 2580	2812	vbc.exe	31
PID 2812 wrote to memory of 2580	2812	vbc.exe	31
PID 2812 wrote to memory of 2580	2812	vbc.exe	31
PID 2812 wrote to memory of 2124	2812	vbc.exe	33
PID 2812 wrote to memory of 2124	2812	vbc.exe	33
PID 2812 wrote to memory of 2124	2812	vbc.exe	33
PID 2812 wrote to memory of 2124	2812	vbc.exe	33
PID 2124 wrote to memory of 1092	2124	cmd.exe	35
PID 2124 wrote to memory of 1092	2124	cmd.exe	35
PID 2124 wrote to memory of 1092	2124	cmd.exe	35
PID 2124 wrote to memory of 1092	2124	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\df59496ce9d9eba8bfc447c066650a04_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2676
- 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
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Windows\SysWOW64\Windupdt\winupdate.exe
    "C:\Windows\system32\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2580
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2124
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 2
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:1092

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

Remote System Discovery

T1018

System Information Discovery

T1082

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat

Filesize
88B

MD5
11491174307d3a99e5edd729b3b1ff46

SHA1
744a9594fc8475b2c04096a32e3857815ffdd904

SHA256
dd71402bd0ec44d23af6658268190eb241b5bc8393c61176abc2c06d9a13d666

SHA512
b77d6cf0e446b34dd5c22ec8fb8e0f1db52f78773723c4aa88d1a05b6abfaee5a9aafabf328096bc87d4f9c5b83c9dea7f9a6038cc15105ad3f25efaa175ff0e

Download Submit
\Windows\SysWOW64\Windupdt\winupdate.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2676-21-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2676-1-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2676-2-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2676-0-0x0000000074D91000-0x0000000074D92000-memory.dmp

Filesize
4KB

Download
memory/2812-11-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-5-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-20-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-19-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-7-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-4-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-22-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-25-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-24-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-23-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2812-3-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2812-45-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads