Analysis

  • max time kernel
    155s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 06:04

General

  • Target

    10f92fc82c4e205ae9a07b49793825556e82a131e1e0b8f55fa9e66f061f5b8f.exe

  • Size

    92KB

  • MD5

    19b96b1f196c372be09c209cf92d6ec8

  • SHA1

    813f23b80e8b04d60f3c762f6fdafc0cdf6b4b86

  • SHA256

    10f92fc82c4e205ae9a07b49793825556e82a131e1e0b8f55fa9e66f061f5b8f

  • SHA512

    02643f120608c0b33c7d875cb7aaa3d00ade547d6286e09f9c78f125167f0c2d23881ecbb0a4889f4c841febe6e387202eceb445fd3fd8b832353e477ceba5f9

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 2 IoCs
  • suricata: ET MALWARE SUSPICIOUS UA (iexplore)

    suricata: ET MALWARE SUSPICIOUS UA (iexplore)

  • suricata: ET MALWARE Sakula/Mivast RAT CnC Beacon 1

    suricata: ET MALWARE Sakula/Mivast RAT CnC Beacon 1

  • 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 50 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\10f92fc82c4e205ae9a07b49793825556e82a131e1e0b8f55fa9e66f061f5b8f.exe
    "C:\Users\Admin\AppData\Local\Temp\10f92fc82c4e205ae9a07b49793825556e82a131e1e0b8f55fa9e66f061f5b8f.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:528
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\10f92fc82c4e205ae9a07b49793825556e82a131e1e0b8f55fa9e66f061f5b8f.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1308
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2928
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:860
  • 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:3980
  • 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:1588

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    25e101a7c0703b4b57e2c1057a0b3330

    SHA1

    d5cb55f542a26420512cd2bb5199e78367080381

    SHA256

    ba6f3250cd902db27c70ed043589b95f2f67e24b72c735165e60acb6ba3a0db4

    SHA512

    c35948eb42f90ab3c3b403406db4143cfaaecb0ae8caf28d8a440f72e5e920f6200fa8354fec01c5f395f6fae631f7051c9ad3b1da23e541fa14c40f387f2b1c

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

    MD5

    25e101a7c0703b4b57e2c1057a0b3330

    SHA1

    d5cb55f542a26420512cd2bb5199e78367080381

    SHA256

    ba6f3250cd902db27c70ed043589b95f2f67e24b72c735165e60acb6ba3a0db4

    SHA512

    c35948eb42f90ab3c3b403406db4143cfaaecb0ae8caf28d8a440f72e5e920f6200fa8354fec01c5f395f6fae631f7051c9ad3b1da23e541fa14c40f387f2b1c