Analysis

  • max time kernel
    177s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 05:05

General

  • Target

    13b73cd9ff5ced145c7ccda8ea68eaa7622786c24ed31cc29a7e3ce0c84ae81e.exe

  • Size

    108KB

  • MD5

    2806c5a9457ce1bdca085b39a9f92018

  • SHA1

    1e20cd367d7fe0d3f49178fdd848da31ab5d9626

  • SHA256

    13b73cd9ff5ced145c7ccda8ea68eaa7622786c24ed31cc29a7e3ce0c84ae81e

  • SHA512

    88a3e691d977f8096bea24f7da94aee777636d9efb7a7cbfe0760c6e512a4759be07b9ac80399f1d32f37db280975269c429e6b4bf406d6e39541d9444b7964b

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\13b73cd9ff5ced145c7ccda8ea68eaa7622786c24ed31cc29a7e3ce0c84ae81e.exe
    "C:\Users\Admin\AppData\Local\Temp\13b73cd9ff5ced145c7ccda8ea68eaa7622786c24ed31cc29a7e3ce0c84ae81e.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2728
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:672
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\13b73cd9ff5ced145c7ccda8ea68eaa7622786c24ed31cc29a7e3ce0c84ae81e.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2708
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:3572
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2852
  • 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:3448
  • 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:3112

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    0c8cb2c97cf4a5baba692585638ff1f7

    SHA1

    06b79502e74ef3c86514e24cc63ee9c00f466a14

    SHA256

    3dda7d343d580664a933907365ecbde7f9a375d44e216ed988b35d64b276560c

    SHA512

    759e5fc1a1ddc746e83739b6fcd7a3546574dea2a73a0e0363842c21dbc3c676f05c3a4ef8e3063396fb993ade87acc3e3a2de57bcdc5cb2ef0b5b469a4e0227

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

    MD5

    0c8cb2c97cf4a5baba692585638ff1f7

    SHA1

    06b79502e74ef3c86514e24cc63ee9c00f466a14

    SHA256

    3dda7d343d580664a933907365ecbde7f9a375d44e216ed988b35d64b276560c

    SHA512

    759e5fc1a1ddc746e83739b6fcd7a3546574dea2a73a0e0363842c21dbc3c676f05c3a4ef8e3063396fb993ade87acc3e3a2de57bcdc5cb2ef0b5b469a4e0227