Analysis

  • max time kernel
    160s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 11:38

General

  • Target

    03dc0f94b5f7e9fe1eb83c1b090eeb4b39e5634d8ebfb2384e52d52a0624849d.exe

  • Size

    35KB

  • MD5

    d936f7e2d96c4491935ef755b54e291c

  • SHA1

    3571d98d9186aee523125dd6026bac3e3b4bc24b

  • SHA256

    03dc0f94b5f7e9fe1eb83c1b090eeb4b39e5634d8ebfb2384e52d52a0624849d

  • SHA512

    a17a65f2ae9e3bd64bdcccaad2bd70280a20d4710db4540904a85ac3f010c0fdca3591bea0363bd434c950c926bf064b0e026eabae4e81837c937864c0457d02

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

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

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 54 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\03dc0f94b5f7e9fe1eb83c1b090eeb4b39e5634d8ebfb2384e52d52a0624849d.exe
    "C:\Users\Admin\AppData\Local\Temp\03dc0f94b5f7e9fe1eb83c1b090eeb4b39e5634d8ebfb2384e52d52a0624849d.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1760
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:1848
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\03dc0f94b5f7e9fe1eb83c1b090eeb4b39e5634d8ebfb2384e52d52a0624849d.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1800
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:628
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1488
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:4072
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:3712

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    MD5

    dc1cb10ff1009f63b6a9f0986ef9eb13

    SHA1

    e435b144dabce4029611b0ba04a3b48b658ad632

    SHA256

    46bb1fc12637d1b714c87ccdffd66b848d4b376b0047bba78f2c737f6f5a8035

    SHA512

    3ea67b2e954e35d9217f2b5257c2a79470c2bdc9ab69f3775227605c3ddcda8d6f9751aec75279245bad8056034509aed385e561a846867eff28f448f228e6e9

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    MD5

    dc1cb10ff1009f63b6a9f0986ef9eb13

    SHA1

    e435b144dabce4029611b0ba04a3b48b658ad632

    SHA256

    46bb1fc12637d1b714c87ccdffd66b848d4b376b0047bba78f2c737f6f5a8035

    SHA512

    3ea67b2e954e35d9217f2b5257c2a79470c2bdc9ab69f3775227605c3ddcda8d6f9751aec75279245bad8056034509aed385e561a846867eff28f448f228e6e9