Analysis

  • max time kernel
    154s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 09:46

General

  • Target

    091751c441f73ec452289edc4f8996d03ffa836df68db13e369b460c3af06f79.exe

  • Size

    80KB

  • MD5

    4ebe8c3822c2bffd4a8bdbbc29c6754d

  • SHA1

    d6f50eabc1794031d89f5f080a16ca6d30ee60e1

  • SHA256

    091751c441f73ec452289edc4f8996d03ffa836df68db13e369b460c3af06f79

  • SHA512

    e011ab23839d44b587bed12d5c8a1dcd4ddc1bcbf4fbd0c15a82310529cf927f28a5c009dde02dabe26eb8d28e11e055d3cdb648638f56fec01cf012b516ea4c

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 53 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\091751c441f73ec452289edc4f8996d03ffa836df68db13e369b460c3af06f79.exe
    "C:\Users\Admin\AppData\Local\Temp\091751c441f73ec452289edc4f8996d03ffa836df68db13e369b460c3af06f79.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1016
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:2224
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\091751c441f73ec452289edc4f8996d03ffa836df68db13e369b460c3af06f79.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3856
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:556
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:4044
  • 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:2988
  • 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:2604

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    788b3f5274f4b7639e10fa548b7790da

    SHA1

    36b9cae85977598d9e71605b272ff10fe78c18c4

    SHA256

    240f0fec2c779110a41a4872cb6a2c95322210a2fdb5b2b8b564468befe3b6d0

    SHA512

    4f385bb776adf0056728e3d3432a05d8c6aa11cd8bd595f1e4a2f4939a747113b3603cf24f8a73d49721536e8d96658fef892e07cf2ec04b761dacf5ffae3e9a

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

    788b3f5274f4b7639e10fa548b7790da

    SHA1

    36b9cae85977598d9e71605b272ff10fe78c18c4

    SHA256

    240f0fec2c779110a41a4872cb6a2c95322210a2fdb5b2b8b564468befe3b6d0

    SHA512

    4f385bb776adf0056728e3d3432a05d8c6aa11cd8bd595f1e4a2f4939a747113b3603cf24f8a73d49721536e8d96658fef892e07cf2ec04b761dacf5ffae3e9a