Analysis

  • max time kernel
    143s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    12-02-2022 05:20

General

  • Target

    1303a5e8c40e398eb6d5bd1cad2f7a31fa0ac052c520db0e59d0bf73d3f70906.exe

  • Size

    216KB

  • MD5

    8c8d92397e5d19d85d32268c9f28c7dc

  • SHA1

    a0f4c4835cf136965acbd517b4353c7f7f2f652d

  • SHA256

    1303a5e8c40e398eb6d5bd1cad2f7a31fa0ac052c520db0e59d0bf73d3f70906

  • SHA512

    a6aa8e556bff5c25b864d3d4bfc9e63ca9c2b303de57f55334b152ba87e0711813d155457cc437bbd1c05ba2f4709c698bfa394fdd9d959ff9554213c2c457bd

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 4 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 8 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • 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\1303a5e8c40e398eb6d5bd1cad2f7a31fa0ac052c520db0e59d0bf73d3f70906.exe
    "C:\Users\Admin\AppData\Local\Temp\1303a5e8c40e398eb6d5bd1cad2f7a31fa0ac052c520db0e59d0bf73d3f70906.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2528
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:2328
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\1303a5e8c40e398eb6d5bd1cad2f7a31fa0ac052c520db0e59d0bf73d3f70906.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3080
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:4024
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:4856
  • 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:1472

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    1bfafef14b0ff4cceff82c200044aa9c

    SHA1

    a74c35bacd2091f5b8afe372642f89db3f8919ce

    SHA256

    8a6fbf818e9d4f0cc1dd94c8e991df065f612c0af9471907d380768d0ac7e2a5

    SHA512

    b0541909c300112c344b0162d482b0c953d38c2da6d9147bc764145e8a8fcf0b8b21ded1ed4912ea200739cc68262ee499c02c16a68e74fd72a19d758ec32410

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

    MD5

    1bfafef14b0ff4cceff82c200044aa9c

    SHA1

    a74c35bacd2091f5b8afe372642f89db3f8919ce

    SHA256

    8a6fbf818e9d4f0cc1dd94c8e991df065f612c0af9471907d380768d0ac7e2a5

    SHA512

    b0541909c300112c344b0162d482b0c953d38c2da6d9147bc764145e8a8fcf0b8b21ded1ed4912ea200739cc68262ee499c02c16a68e74fd72a19d758ec32410

  • memory/2328-136-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/2528-135-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/4856-132-0x00000257AFD30000-0x00000257AFD40000-memory.dmp

    Filesize

    64KB

  • memory/4856-133-0x00000257AFD90000-0x00000257AFDA0000-memory.dmp

    Filesize

    64KB

  • memory/4856-134-0x00000257B2A80000-0x00000257B2A84000-memory.dmp

    Filesize

    16KB