Overview

overview

10

Static

static

10

JaffaCakes...68.exe

windows7-x64

10

JaffaCakes...68.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    16-02-2025 02:54

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General

  • Target

    JaffaCakes118_fed30a16e3b1dbda2f4d15b2aae34168.exe

  • Size

    714KB

  • MD5

    fed30a16e3b1dbda2f4d15b2aae34168

  • SHA1

    604e8a9aa82f44bf55775916094d0d18e8282751

  • SHA256

    eda2e447c8bc5d389b98c20385112b9f054b56343731c9b103e7528788a29f46

  • SHA512

    4b5043f502a0d002a226d95c1f14f6e66e9e9bfaf080683621467612a479c7bf624d258d5a57e70ccd84157a78242dc1cb46817bc1203b6c5bf4ca2d4fc49295

  • SSDEEP

    12288:qaAchpWsuVTv7ItY8XljyypHP7cOLBev03hlULsmWZ++09ZcKDVsgdW:rAEENIq8XwyVPQclDq/+WnpsSW

Score
10/10
darkcometguest16defense_evasiondiscoverypersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

192.168.1.100:1604

Mutex

DC_MUTEX-0PH35V6

Attributes
  • InstallPath

    Windupdt\winupdate.exe

  • gencode

    =lr$etRb$*1C

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    winupdater

rc4.plain

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    trojanratdarkcomet
  • Darkcomet family
    darkcomet
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Modifies firewall policy service 3 TTPs 3 IoCs
    defense_evasion
  • Modifies security service 2 TTPs 1 IoCs
    defense_evasion
  • Windows security bypass 2 TTPs 1 IoCs
    defense_evasiontrojan
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Windows security modification 2 TTPs 1 IoCs
    defense_evasiontrojan
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

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

    Adversaries may check for Internet connectivity on compromised systems.

    discovery
  • Checks processor information in registry 2 TTPs 8 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fed30a16e3b1dbda2f4d15b2aae34168.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fed30a16e3b1dbda2f4d15b2aae34168.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Adds Run key to start application
    • 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:2016
    • C:\Windupdt\winupdate.exe
      "C:\Windupdt\winupdate.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1488
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat" "
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2252
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Defense Evasion

Impair Defenses

3
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

2
T1562.001

Modify Registry

6
T1112

Credential Access

Discovery

Query Registry

3
T1012

Remote System Discovery

1
T1018

System Information Discovery

4
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

Replay Monitor

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Downloads

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

    119B

    MD5

    bcfc62e042294d2127e2aa5d246b7f7f

    SHA1

    bc5de31d0300058496b2b9a5bb3346f2c9b3b620

    SHA256

    c3d92dd7d5a434bfa1102a476bf01dffaa8b3f87e44aa29edf0524a4f1ff9a30

    SHA512

    97bdaa1c6bf5e59fd8f0652f5f27c7ee304980a5f0c74a98455afad1e50b4466ba7ec2c6a27826ebaaa55941e686baf5b8f6b1fb514df4a51a573f1af29decba

    Download Submit

  • \Windupdt\winupdate.exe
    Filesize

    714KB

    MD5

    fed30a16e3b1dbda2f4d15b2aae34168

    SHA1

    604e8a9aa82f44bf55775916094d0d18e8282751

    SHA256

    eda2e447c8bc5d389b98c20385112b9f054b56343731c9b103e7528788a29f46

    SHA512

    4b5043f502a0d002a226d95c1f14f6e66e9e9bfaf080683621467612a479c7bf624d258d5a57e70ccd84157a78242dc1cb46817bc1203b6c5bf4ca2d4fc49295

    Download Submit

  • memory/1488-22-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

    Download

  • memory/1488-24-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

    Download

  • memory/1488-26-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

    Download

  • memory/1488-28-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

    Download

  • memory/1488-30-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

    Download

  • memory/1488-32-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

    Download

  • memory/1488-34-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

    Download

  • memory/2016-0-0x00000000003F0000-0x00000000003F1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2016-20-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

    Download