Analysis

  • max time kernel
    174s
  • max time network
    186s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 04:06

General

  • Target

    1607b5975709659fad363ab0c13a6556308954dbc181ea92cc6e1bd6ed1c0bb6.exe

  • Size

    150KB

  • MD5

    fdd7a04de79987d35a699b3a6bbd68c1

  • SHA1

    b110ae8b155233cb019f86c7f7555b6669209b62

  • SHA256

    1607b5975709659fad363ab0c13a6556308954dbc181ea92cc6e1bd6ed1c0bb6

  • SHA512

    12b7c93e7d7e41f83f9312a9abdd45e4e57dd20119675fd8aca65263257c52658f89f2d07d6f2ef448f3fe8019710822fa6aba308086009d363cc28cdaf5b300

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\1607b5975709659fad363ab0c13a6556308954dbc181ea92cc6e1bd6ed1c0bb6.exe
    "C:\Users\Admin\AppData\Local\Temp\1607b5975709659fad363ab0c13a6556308954dbc181ea92cc6e1bd6ed1c0bb6.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1804
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3680
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\1607b5975709659fad363ab0c13a6556308954dbc181ea92cc6e1bd6ed1c0bb6.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3976
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:332
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3384
  • 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:1948
  • 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:620

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    163337c851c402ded57e90be712c1729

    SHA1

    7708e614d1a9ab80be32f47fbf7bc97887f60f51

    SHA256

    14b0787562f23c08b7f79c11d22824806efe665ad23a919452cea2229ec874b0

    SHA512

    751ba0e3165e49d9e7c0330d752640fa8ed76209c736df0de9886a33a377ffe882d67db9498f5b793fd9d1e2ec959b033f1ce527fb30a855ed8ad61a7897b937

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

    MD5

    163337c851c402ded57e90be712c1729

    SHA1

    7708e614d1a9ab80be32f47fbf7bc97887f60f51

    SHA256

    14b0787562f23c08b7f79c11d22824806efe665ad23a919452cea2229ec874b0

    SHA512

    751ba0e3165e49d9e7c0330d752640fa8ed76209c736df0de9886a33a377ffe882d67db9498f5b793fd9d1e2ec959b033f1ce527fb30a855ed8ad61a7897b937