Analysis

  • max time kernel
    159s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 05:05

General

  • Target

    13ad622d34ea039a978daf635827835df8cce01ab3b6d6982864ee9a0f1b2b78.exe

  • Size

    92KB

  • MD5

    eb4750a948dceff0ee03021cb066f202

  • SHA1

    19f48ccbc06a11987f96b0584764cfb8cea37d63

  • SHA256

    13ad622d34ea039a978daf635827835df8cce01ab3b6d6982864ee9a0f1b2b78

  • SHA512

    ede2d1a812700a9def0ab1e5c97ceaa7f3ec1968e0ecb12206baa51c8a5972dbdf68a755dd52715b7db037169aa9ae121a6584f3bcd46e58aef7cf92f1a57f6c

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 4 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 31 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\13ad622d34ea039a978daf635827835df8cce01ab3b6d6982864ee9a0f1b2b78.exe
    "C:\Users\Admin\AppData\Local\Temp\13ad622d34ea039a978daf635827835df8cce01ab3b6d6982864ee9a0f1b2b78.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3796
    • 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\13ad622d34ea039a978daf635827835df8cce01ab3b6d6982864ee9a0f1b2b78.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4036
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1932
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3888
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3980
  • 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:3492
  • 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:2468

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    c8de4bc0945b3c8ffd09bf764f96cc51

    SHA1

    1d2a7ee6a78d52ec6505c6507ec3283bd9aba101

    SHA256

    15b70ff940838cc6b0a82e8702c10c690c3ef562525b04ff9a74e4e3c540d061

    SHA512

    d208921e21b070e5d745370896c62498a5b1fb0429c9da30d90cc646d3845c196a0fc84fce22d45e77944c8e0025936fa92cf1294e242739372eceb3cf6416e5

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

    MD5

    c8de4bc0945b3c8ffd09bf764f96cc51

    SHA1

    1d2a7ee6a78d52ec6505c6507ec3283bd9aba101

    SHA256

    15b70ff940838cc6b0a82e8702c10c690c3ef562525b04ff9a74e4e3c540d061

    SHA512

    d208921e21b070e5d745370896c62498a5b1fb0429c9da30d90cc646d3845c196a0fc84fce22d45e77944c8e0025936fa92cf1294e242739372eceb3cf6416e5