Analysis

  • max time kernel
    160s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 05:32

General

  • Target

    126b6dade7cc36fe7950401114ef4918e3ff5a53c01e17d78473b957b6d8bb8c.exe

  • Size

    35KB

  • MD5

    a945a7f18bfe9dc4ac24793d204fba36

  • SHA1

    ae81172090d6ea5f824c137547125cf054cf549e

  • SHA256

    126b6dade7cc36fe7950401114ef4918e3ff5a53c01e17d78473b957b6d8bb8c

  • SHA512

    723d3505b385a0ae5d74b50a25f4e74343fe0f1bfbd169c49a4dc56ae923d06d6abb8274d06433bc0336f182ce46551017e56c5c0125b74bf9d9ea5561371d72

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 55 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\126b6dade7cc36fe7950401114ef4918e3ff5a53c01e17d78473b957b6d8bb8c.exe
    "C:\Users\Admin\AppData\Local\Temp\126b6dade7cc36fe7950401114ef4918e3ff5a53c01e17d78473b957b6d8bb8c.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2136
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:540
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\126b6dade7cc36fe7950401114ef4918e3ff5a53c01e17d78473b957b6d8bb8c.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1520
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3896
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2184
  • 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:1612
  • 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:876

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    efc833925f7a0f4ccff5ceb3f5b5ff5f

    SHA1

    18624dd48fed484027d940bf98c328209bce515c

    SHA256

    ed295d0f5cffb4b68c45a6d10e9cb101e7f23d19356b00c6e1d3a1134f4e5798

    SHA512

    9acf26ccb91756bc56f4e8cc4067c1af6b201e2c9d63c19bbc9c94613390b9101d9933037de80db4659d93e23de173b2b16ceac0f064a368641d5674fbc17c48

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

    MD5

    efc833925f7a0f4ccff5ceb3f5b5ff5f

    SHA1

    18624dd48fed484027d940bf98c328209bce515c

    SHA256

    ed295d0f5cffb4b68c45a6d10e9cb101e7f23d19356b00c6e1d3a1134f4e5798

    SHA512

    9acf26ccb91756bc56f4e8cc4067c1af6b201e2c9d63c19bbc9c94613390b9101d9933037de80db4659d93e23de173b2b16ceac0f064a368641d5674fbc17c48