Analysis

  • max time kernel
    160s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 09:41

General

  • Target

    094a46a0e3054265adcc4b7a1c4543b1652fcfb29f2aead26ee33acf94931102.exe

  • Size

    60KB

  • MD5

    c38a957dc4f8152b98d5e4081a875e7e

  • SHA1

    4e91fea2b481d441f09fcec5def389b7069f1f14

  • SHA256

    094a46a0e3054265adcc4b7a1c4543b1652fcfb29f2aead26ee33acf94931102

  • SHA512

    e1a415cf7928396731442b4224f724f8ecf83be1934e5e5a4236ff3d3e7ca5e2aa0aa31320b8600d897b4997606d342fc1148ee6a4f18e9cdb84d7181b02f814

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • 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 51 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\094a46a0e3054265adcc4b7a1c4543b1652fcfb29f2aead26ee33acf94931102.exe
    "C:\Users\Admin\AppData\Local\Temp\094a46a0e3054265adcc4b7a1c4543b1652fcfb29f2aead26ee33acf94931102.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1484
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:760
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\094a46a0e3054265adcc4b7a1c4543b1652fcfb29f2aead26ee33acf94931102.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3088
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:404
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3724
  • 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:2148
  • 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:3308

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    fc6aca86c5c3492d3c4d689598a86521

    SHA1

    932a48dd30eebcb451afec8102d805693899a904

    SHA256

    6c36bffd085dd599abfa59032464160b26699e141021dd888e9e14bf7e75ec6b

    SHA512

    c30b17222126f5f4d5e4c2b295f5fdec1675705002fe34ad817d6020fe38b188f123ddb837580135e7f2a8709ef4ee6c999398535ff70a4bfdab2c3f11d9959f

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

    fc6aca86c5c3492d3c4d689598a86521

    SHA1

    932a48dd30eebcb451afec8102d805693899a904

    SHA256

    6c36bffd085dd599abfa59032464160b26699e141021dd888e9e14bf7e75ec6b

    SHA512

    c30b17222126f5f4d5e4c2b295f5fdec1675705002fe34ad817d6020fe38b188f123ddb837580135e7f2a8709ef4ee6c999398535ff70a4bfdab2c3f11d9959f