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Overview

overview

8

Static

static

3

b1d21cd235...18.exe

windows7-x64

8

b1d21cd235...18.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/08/2024, 02:41

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General

  • Target

    b1d21cd2355e86e9faf57813ecea878c_JaffaCakes118.exe

  • Size

    100KB

  • MD5

    b1d21cd2355e86e9faf57813ecea878c

  • SHA1

    7bbd8887e3b53d77f996bfcf3dd14ce21b94de75

  • SHA256

    1aa3b7fe811397e80b1fc6638a4402006b1cbc27cf35a9f3cc7a55852dc88885

  • SHA512

    c45ff562ffcbe31ad597f697522e18d2dbc26a2deb61749ea603bbf5c99d905642a8496a8d4b521c4b83124bdc34b921e43e450f98fa9cfee721818c83880c21

  • SSDEEP

    1536:HXdBxXv40AYdVhGH58LHTVCGTee7oVt7SdJmptcyHEVh3j:HXd/Xvzfhq587U/SdQtcyHErj

Score
8/10
discoverypersistence

Malware Config

Signatures

  • Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs
    persistence
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

    discovery
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b1d21cd2355e86e9faf57813ecea878c_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b1d21cd2355e86e9faf57813ecea878c_JaffaCakes118.exe"
    1⤵
    • Server Software Component: Terminal Services DLL
    • Checks computer location settings
    • Loads dropped DLL
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4016
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B1D21C~1.EXE > nul
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3016
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    PID:5008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\240653765_s.dll
    Filesize

    79KB

    MD5

    f6242b5201a95a9e3dca82dc642df90f

    SHA1

    d9e3d2f10526bb7ba7361a00f687b7d4d68ae6e5

    SHA256

    e53d18c8cb7d272ddd8eada91dcd6a0ca56f2858854b97835af28f3ac13509be

    SHA512

    c9cfb59c6739b88ab39060693c681974b9ef96710934b6c6819938819e772e9c9e94ee45e943eab50b49514a8acac97ab23197e0e285da10b3f8b20db41bf3de

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