Analysis

  • max time kernel
    169s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 04:10

General

  • Target

    15e4ec3f213d152bc1d7e1b567f1105b7d7f37f6f449bfc73a5f2b19cdd09f2c.exe

  • Size

    150KB

  • MD5

    c4b9a7152e0d13ce95f1cab95d929810

  • SHA1

    ea0b504be889b3b08ee6f041aaa50189b987b7e4

  • SHA256

    15e4ec3f213d152bc1d7e1b567f1105b7d7f37f6f449bfc73a5f2b19cdd09f2c

  • SHA512

    e5050468097a2cd2d61ce94f90a387241273210931fccb2d2463796948bfdf029b4e0e030d9e9a38acdf24e1f3ce62ea5eaf54d2ac2e2f79d578fa36546a1eec

Malware Config

Signatures

  • Sakula

    Sakula is a remote access trojan with various capabilities.

  • Sakula Payload 2 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 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 50 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\15e4ec3f213d152bc1d7e1b567f1105b7d7f37f6f449bfc73a5f2b19cdd09f2c.exe
    "C:\Users\Admin\AppData\Local\Temp\15e4ec3f213d152bc1d7e1b567f1105b7d7f37f6f449bfc73a5f2b19cdd09f2c.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2116
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:932
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\15e4ec3f213d152bc1d7e1b567f1105b7d7f37f6f449bfc73a5f2b19cdd09f2c.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:544
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2108
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1636
  • 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:2648
  • 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:2504

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    MD5

    4a7dda95ff9966376eb6920ab5d01a2d

    SHA1

    263f2a5d54bc0a150b38257c1717e3075970f068

    SHA256

    bb9daa591fad75b56c706fc4af053a354b2538a80ed5e94798ae9e713c3616c0

    SHA512

    3e9c58acf67f767f4b694fb86af642aa1e1122a17fe8c392a12c28d75d747af9dcead67a0f9396ed56411989c30da3a2274a3ca6ebefb0d78a420ab6e90803be

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

    MD5

    4a7dda95ff9966376eb6920ab5d01a2d

    SHA1

    263f2a5d54bc0a150b38257c1717e3075970f068

    SHA256

    bb9daa591fad75b56c706fc4af053a354b2538a80ed5e94798ae9e713c3616c0

    SHA512

    3e9c58acf67f767f4b694fb86af642aa1e1122a17fe8c392a12c28d75d747af9dcead67a0f9396ed56411989c30da3a2274a3ca6ebefb0d78a420ab6e90803be