Analysis

  • max time kernel
    183s
  • max time network
    195s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 05:36

General

  • Target

    1235f0d35686b31972ebb629be918bcb4f2178e3c896825dd65fc5d6325b15dc.exe

  • Size

    92KB

  • MD5

    1bf526548688d71ac26e41d91d89f8c1

  • SHA1

    128b5b2fde6377c26a60da99e0a7bcb5ba8def60

  • SHA256

    1235f0d35686b31972ebb629be918bcb4f2178e3c896825dd65fc5d6325b15dc

  • SHA512

    c80d0b529a5dae39f913fa19892b6e9fb3073405704cb4d81326b3a8d8ba01ef040259fcd378b62ff69cc79a5c612c5c48cd0e422cf10c896af380ed5e81f8a2

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 52 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\1235f0d35686b31972ebb629be918bcb4f2178e3c896825dd65fc5d6325b15dc.exe
    "C:\Users\Admin\AppData\Local\Temp\1235f0d35686b31972ebb629be918bcb4f2178e3c896825dd65fc5d6325b15dc.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1268
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3212
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\1235f0d35686b31972ebb629be918bcb4f2178e3c896825dd65fc5d6325b15dc.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2356
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2912
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1920
  • 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:1360
  • 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:3580

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    eb86fdc47663c30e2923bec61daa4321

    SHA1

    b93669de23f1c71b38c67c85b4619031b8a0697e

    SHA256

    92bf1ac9a6771afc661921d277f214a220247580a381f7783d52b929bccceab6

    SHA512

    1755021f9aaa1dc6f109f4b9df6821b45d9b8277750b910335e1b73d87cc48e99a1e152fe5346d6a43d4e055fe53fd9e6d6a16241b52e9417a3db1422478af76

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

    MD5

    eb86fdc47663c30e2923bec61daa4321

    SHA1

    b93669de23f1c71b38c67c85b4619031b8a0697e

    SHA256

    92bf1ac9a6771afc661921d277f214a220247580a381f7783d52b929bccceab6

    SHA512

    1755021f9aaa1dc6f109f4b9df6821b45d9b8277750b910335e1b73d87cc48e99a1e152fe5346d6a43d4e055fe53fd9e6d6a16241b52e9417a3db1422478af76