darkcomet | 66254aea3cdef64b2742b9e33553ab42de2009c5d1368f9a3fe601af5b415e32

General

Target

8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe
Size

924KB
MD5

8a7b28ececd740ba77ed7ac264793865
SHA1

c7c3b55424a654613bb6d4f32c1ebbc87ac839c6
SHA256

66254aea3cdef64b2742b9e33553ab42de2009c5d1368f9a3fe601af5b415e32
SHA512

8499dc97eac611ee8a56927bdf009df51b85309cd3979f8c1848778d883da6bbfa7d5bdb921bc31e578837d266cacbf480e4bde7b3a3232832442138addf7d95
SSDEEP

24576:Dxdt37sx7y5DZh1b4q9ayM5HEP3hjD7WQoa:DLtLdKt163Zq

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

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

Processes:

8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

pid process

3512 8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

Loads dropped DLL 4 IoCs

Processes:

8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

pid	process
3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe
3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe
3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe
3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.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

Processes:

8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hWCxxwCmfmRrdtwzrQtYIEsNEtISBBoaCYkygxjnOCysLIfBZf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe"	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

description pid process target process

PID 3512 set thread context of 5084 3512 8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1748 5084 WerFault.exe vbc.exe

description	pid	process	target process
PID 3512 set thread context of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe

pid	pid_target	process	target process
1748	5084	WerFault.exe	vbc.exe

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

Processes:

8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

description	pid	process	target process
PID 956 wrote to memory of 3512	956	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe
PID 956 wrote to memory of 3512	956	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe
PID 956 wrote to memory of 3512	956	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe
PID 3512 wrote to memory of 5084	3512	8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:956
- C:\Users\Admin\Documents\8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe
  "C:\Users\Admin\Documents\8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3512
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    3⤵
    PID:5084
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5084 -s 12
      4⤵
      Program crash
      PID:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5084 -ip 5084
1⤵
PID:2432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe.log

Filesize
319B

MD5
600936e187ce94453648a9245b2b42a5

SHA1
3349e5da3f713259244a2cbcb4a9dca777f637ed

SHA256
1493eb1dc75a64eb2eb06bc9eb2c864b78fc4a2c674108d5183ac7824013ff2d

SHA512
d41203f93ed77430dc570e82dc713f09d21942d75d1f9c3c84135421550ac2fa3845b7e46df70d2c57fe97d3a88e43c672771bb8b6433c44584c4e64646c1964

Download Submit
C:\Users\Admin\Documents\8a7b28ececd740ba77ed7ac264793865_JaffaCakes118.exe

Filesize
924KB

MD5
8a7b28ececd740ba77ed7ac264793865

SHA1
c7c3b55424a654613bb6d4f32c1ebbc87ac839c6

SHA256
66254aea3cdef64b2742b9e33553ab42de2009c5d1368f9a3fe601af5b415e32

SHA512
8499dc97eac611ee8a56927bdf009df51b85309cd3979f8c1848778d883da6bbfa7d5bdb921bc31e578837d266cacbf480e4bde7b3a3232832442138addf7d95

Download Submit
C:\Users\Admin\Documents\aclui.dll

Filesize
17KB

MD5
e99f74ae594c1b373fa0d34193dce208

SHA1
3933f949724a6702e0038295287a39c53592b11e

SHA256
1dbb3b418bd78abb49d583f2b9cea6b20fe9fece0a59c118ddf104a672e29ebd

SHA512
355a2a3955e0f50b0c41a24589b9283892689faa61aea6360a1b762f5f2f58166c579b37dc0b003e716c1dc760f1931b73faf6fa3e2b21f8571dbdf5ee37c030

Download Submit
memory/956-0-0x0000000075512000-0x0000000075513000-memory.dmp

Filesize
4KB

Download
memory/956-1-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/956-2-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/956-17-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/3512-16-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/3512-18-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/3512-21-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/3512-40-0x0000000075510000-0x0000000075AC1000-memory.dmp

Filesize
5.7MB

Download
memory/5084-38-0x0000000013140000-0x00000000131F6000-memory.dmp

Filesize
728KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads