Analysis

  • max time kernel
    164s
  • max time network
    170s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 11:21

General

  • Target

    049d6a8cfc2386a8fa9e0986e31e6ac9e443174b4a6f2269487782cbee5cc328.exe

  • Size

    92KB

  • MD5

    746f822b859f21f6b3d80cd9aebb8376

  • SHA1

    d5d063e2e254e1b35d34968c51875c49cf335ce1

  • SHA256

    049d6a8cfc2386a8fa9e0986e31e6ac9e443174b4a6f2269487782cbee5cc328

  • SHA512

    fe16574eba615cf04830f1f5055061674b680feb376e85d9fc30305d4dc11ef65991b0b5f4eb95940fd34ec7816b567ed4b4798e2394ea5867074512a1c46674

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 2 IoCs
  • 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 54 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\049d6a8cfc2386a8fa9e0986e31e6ac9e443174b4a6f2269487782cbee5cc328.exe
    "C:\Users\Admin\AppData\Local\Temp\049d6a8cfc2386a8fa9e0986e31e6ac9e443174b4a6f2269487782cbee5cc328.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:3688
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\049d6a8cfc2386a8fa9e0986e31e6ac9e443174b4a6f2269487782cbee5cc328.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2680
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2788
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3824
  • 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:3412
  • 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:3148

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    MD5

    1a4b408400fd3cc4255114cd33b70b20

    SHA1

    66aee63e9143539b7862797018bbec6fee26f819

    SHA256

    dfb6b703aaf8dfd8a3925ea5beb60969dcc691f73cb0d23321fb4b261f7a678f

    SHA512

    9562f50b9e3312c34f82046f1d62475af53e5bb55f01934b156ad3688589b26c18d24df3fe2666022dab38265ce66c7ee9e14e31485fe0754577d254c519e93a

  • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
    MD5

    1a4b408400fd3cc4255114cd33b70b20

    SHA1

    66aee63e9143539b7862797018bbec6fee26f819

    SHA256

    dfb6b703aaf8dfd8a3925ea5beb60969dcc691f73cb0d23321fb4b261f7a678f

    SHA512

    9562f50b9e3312c34f82046f1d62475af53e5bb55f01934b156ad3688589b26c18d24df3fe2666022dab38265ce66c7ee9e14e31485fe0754577d254c519e93a