Analysis

  • max time kernel
    159s
  • max time network
    179s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    26-06-2022 07:44

General

  • Target

    d9c650fdcc961cfb86baaff737d8c7bd.exe

  • Size

    1000KB

  • MD5

    d9c650fdcc961cfb86baaff737d8c7bd

  • SHA1

    0a5d1730dbd7c2d925c88bf1bd3c726ba6f62e2d

  • SHA256

    79103532395036c14b755d90f9cacfdec6b588f1b031a7cba936c1b9d2ef3b51

  • SHA512

    bc735fe469f91fc2ee5fd5aa1ad11141b115f1c04c466f8cfcd8b192c137a3d24927f1d2dcd3edd5f237f17e1cdfa417e3d8c02a2865fbbe5185743f17ccdd6f

Malware Config

Extracted

Family

arkei

Botnet

Default

Extracted

Family

recordbreaker

C2

http://193.106.191.146/

http://185.215.113.89/

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • RecordBreaker

    RecordBreaker is an information stealer capable of downloading and executing secondary payloads written in C++.

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d9c650fdcc961cfb86baaff737d8c7bd.exe
    "C:\Users\Admin\AppData\Local\Temp\d9c650fdcc961cfb86baaff737d8c7bd.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:916
    • C:\Users\Admin\AppData\Local\Temp\sdame.exe
      "C:\Users\Admin\AppData\Local\Temp\sdame.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1604
      • C:\Users\Admin\AppData\Local\Temp\sdame.exe
        "C:\Users\Admin\AppData\Local\Temp\sdame.exe"
        3⤵
        • Executes dropped EXE
        PID:4196
    • C:\Users\Admin\AppData\Local\Temp\d9c650fdcc961cfb86baaff737d8c7bd.exe
      "C:\Users\Admin\AppData\Local\Temp\d9c650fdcc961cfb86baaff737d8c7bd.exe"
      2⤵
        PID:5048

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\sdame.exe

      Filesize

      556KB

      MD5

      75cd6ae901a6583211a13c768b901718

      SHA1

      ee6bd9c0443e5337d39764fa254209726469f6d8

      SHA256

      944e64b81f23985c0defc1a683806d93d5c13b131d5fa970b5124ee9634d1df0

      SHA512

      dd7a218595b092e2c46d2f8e40428dab8b83adf164ea4e520192df280f23ce7aaf248a2e0045cef8f05263bc69be94f898c096cc8c77ee7911384a3480fe4ee5

    • C:\Users\Admin\AppData\Local\Temp\sdame.exe

      Filesize

      556KB

      MD5

      75cd6ae901a6583211a13c768b901718

      SHA1

      ee6bd9c0443e5337d39764fa254209726469f6d8

      SHA256

      944e64b81f23985c0defc1a683806d93d5c13b131d5fa970b5124ee9634d1df0

      SHA512

      dd7a218595b092e2c46d2f8e40428dab8b83adf164ea4e520192df280f23ce7aaf248a2e0045cef8f05263bc69be94f898c096cc8c77ee7911384a3480fe4ee5

    • C:\Users\Admin\AppData\Local\Temp\sdame.exe

      Filesize

      556KB

      MD5

      75cd6ae901a6583211a13c768b901718

      SHA1

      ee6bd9c0443e5337d39764fa254209726469f6d8

      SHA256

      944e64b81f23985c0defc1a683806d93d5c13b131d5fa970b5124ee9634d1df0

      SHA512

      dd7a218595b092e2c46d2f8e40428dab8b83adf164ea4e520192df280f23ce7aaf248a2e0045cef8f05263bc69be94f898c096cc8c77ee7911384a3480fe4ee5

    • memory/916-137-0x00000000034D0000-0x00000000034D7000-memory.dmp

      Filesize

      28KB

    • memory/1604-132-0x0000000000000000-mapping.dmp

    • memory/4196-139-0x0000000000000000-mapping.dmp

    • memory/4196-141-0x0000000000400000-0x000000000043D000-memory.dmp

      Filesize

      244KB

    • memory/4196-143-0x0000000000400000-0x000000000043D000-memory.dmp

      Filesize

      244KB

    • memory/5048-138-0x0000000000000000-mapping.dmp

    • memory/5048-142-0x0000000000400000-0x0000000000412000-memory.dmp

      Filesize

      72KB