Analysis

  • max time kernel
    178s
  • max time network
    193s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 06:08

General

  • Target

    10bb67775da653b356b0211e7782f3d69681dddf32b15d94dd4e2c3ca3f72772.exe

  • Size

    150KB

  • MD5

    42e548bdfe2261d0afd7ddbad9f24ccb

  • SHA1

    eab40e3b7ea2c84ca0760dd7aed4b2df568e42ac

  • SHA256

    10bb67775da653b356b0211e7782f3d69681dddf32b15d94dd4e2c3ca3f72772

  • SHA512

    3cfbde40ebe300a2f78efcb781bc99c47111499296a119ae239a66ab992ccb85c6f9fb4b5e6668a24e494268621a237b9f14cffe67f358ee81ededec774ea613

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 53 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\10bb67775da653b356b0211e7782f3d69681dddf32b15d94dd4e2c3ca3f72772.exe
    "C:\Users\Admin\AppData\Local\Temp\10bb67775da653b356b0211e7782f3d69681dddf32b15d94dd4e2c3ca3f72772.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3744
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3412
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\10bb67775da653b356b0211e7782f3d69681dddf32b15d94dd4e2c3ca3f72772.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3408
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3040
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3960
  • 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:3452
  • 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:1304

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    881de153d829fe58396f2f54a479cf53

    SHA1

    f27cf6e9c1cf286d00616077948f7388cf7950de

    SHA256

    15f6a1c96e642b48e7232b256b7075c35e15e18756b05fc0ae931b653bc370a1

    SHA512

    e1ff03bc87cd89855b538c8b3800822203eda8d7b854917330969b5b9d5e96be3283251e3bf58c875b10c0c30bdcaf6b6b46ce4f190e6870717d70a3a6867021

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

    MD5

    881de153d829fe58396f2f54a479cf53

    SHA1

    f27cf6e9c1cf286d00616077948f7388cf7950de

    SHA256

    15f6a1c96e642b48e7232b256b7075c35e15e18756b05fc0ae931b653bc370a1

    SHA512

    e1ff03bc87cd89855b538c8b3800822203eda8d7b854917330969b5b9d5e96be3283251e3bf58c875b10c0c30bdcaf6b6b46ce4f190e6870717d70a3a6867021