darkcomet | 5d92d079221cc27559e699db67b12bd0ecf9425c722340e1c8717644c5f1cf24

General

Target

JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe
Size

1003KB
MD5

9e503285b627ea4c741a091f08c9bd0a
SHA1

bc0580d85ecb1c1f164d61873f02c0b6806fae77
SHA256

5d92d079221cc27559e699db67b12bd0ecf9425c722340e1c8717644c5f1cf24
SHA512

164c8e3185d20a39335f8afaf47ef9955d57f46c856221096c185fd9cee3e18959c1e19057005b8b29675055167441d99142a108a707aa9d0351f8e7ff9f47c2
SSDEEP

24576:Fjo0HWLwdVWFkFIfP926yG0RL0ZzK1xdg6:FjoeWs+bd2IRK1xdg

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\\drivers\\acpi.exe"	vbc.exe

Drops file in Drivers directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\acpi.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\drivers\acpi.exe	vbc.exe
File opened for modification	C:\Windows\system32\drivers\etc\hosts	vbc.exe
File opened for modification	C:\Windows\SysWOW64\drivers\	vbc.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-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 2 IoCs

pid	Process
3712	vbc.exe
3068	acpi.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-1-5-21-1121399784-3202166597-3503557106-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\GoogleUpdate = "C:\\Windows\\system32\\drivers\\acpi.exe"	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WinUpdtr = "C:\\Users\\Admin\\AppData\\Roaming\\WinUpdtr\\JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe"	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2532 set thread context of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85

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 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	acpi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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
2088	cmd.exe
3048	PING.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	vbc.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3048	PING.EXE

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3712	vbc.exe
Token: SeSecurityPrivilege	3712	vbc.exe
Token: SeTakeOwnershipPrivilege	3712	vbc.exe
Token: SeLoadDriverPrivilege	3712	vbc.exe
Token: SeSystemProfilePrivilege	3712	vbc.exe
Token: SeSystemtimePrivilege	3712	vbc.exe
Token: SeProfSingleProcessPrivilege	3712	vbc.exe
Token: SeIncBasePriorityPrivilege	3712	vbc.exe
Token: SeCreatePagefilePrivilege	3712	vbc.exe
Token: SeBackupPrivilege	3712	vbc.exe
Token: SeRestorePrivilege	3712	vbc.exe
Token: SeShutdownPrivilege	3712	vbc.exe
Token: SeDebugPrivilege	3712	vbc.exe
Token: SeSystemEnvironmentPrivilege	3712	vbc.exe
Token: SeChangeNotifyPrivilege	3712	vbc.exe
Token: SeRemoteShutdownPrivilege	3712	vbc.exe
Token: SeUndockPrivilege	3712	vbc.exe
Token: SeManageVolumePrivilege	3712	vbc.exe
Token: SeImpersonatePrivilege	3712	vbc.exe
Token: SeCreateGlobalPrivilege	3712	vbc.exe
Token: 33	3712	vbc.exe
Token: 34	3712	vbc.exe
Token: 35	3712	vbc.exe
Token: 36	3712	vbc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 2532 wrote to memory of 3712	2532	JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe	85
PID 3712 wrote to memory of 2088	3712	vbc.exe	87
PID 3712 wrote to memory of 2088	3712	vbc.exe	87
PID 3712 wrote to memory of 2088	3712	vbc.exe	87
PID 2088 wrote to memory of 3048	2088	cmd.exe	89
PID 2088 wrote to memory of 3048	2088	cmd.exe	89
PID 2088 wrote to memory of 3048	2088	cmd.exe	89
PID 3712 wrote to memory of 3068	3712	vbc.exe	90
PID 3712 wrote to memory of 3068	3712	vbc.exe	90
PID 3712 wrote to memory of 3068	3712	vbc.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9e503285b627ea4c741a091f08c9bd0a.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in Drivers directory
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3712
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 4 && del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2088
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 4
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:3048
- - C:\Windows\SysWOW64\drivers\acpi.exe
    "C:\Windows\system32\drivers\acpi.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/2532-0-0x00000000752B2000-0x00000000752B3000-memory.dmp

Filesize
4KB

Download
memory/2532-1-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/2532-2-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/2532-20-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/3712-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3712-7-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3712-12-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3712-14-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3712-15-0x0000000000820000-0x0000000000821000-memory.dmp

Filesize
4KB

Download
memory/3712-78-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads