Analysis

  • max time kernel
    151s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 08:32

General

  • Target

    0ae8ebf489320c31495d36d0bb5c22ae27a175aeb1e7619e677e682f288f2cef.exe

  • Size

    89KB

  • MD5

    0e28f089c4b3a35f557b2451c7dfa51f

  • SHA1

    ecd8b322635e4f05408085d7f987d1342c97f39a

  • SHA256

    0ae8ebf489320c31495d36d0bb5c22ae27a175aeb1e7619e677e682f288f2cef

  • SHA512

    deaea20b44d9be8f6d998691d686a5a885c728acfa2948b08599e3a31dcf24aab0ae14c093de5f8078bc6a27cce9f1bc91b25faec6f077061989f0b75758b5ef

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.

  • Modifies data under HKEY_USERS 49 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\0ae8ebf489320c31495d36d0bb5c22ae27a175aeb1e7619e677e682f288f2cef.exe
    "C:\Users\Admin\AppData\Local\Temp\0ae8ebf489320c31495d36d0bb5c22ae27a175aeb1e7619e677e682f288f2cef.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3640
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:452
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\0ae8ebf489320c31495d36d0bb5c22ae27a175aeb1e7619e677e682f288f2cef.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1828
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1904
  • 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:516
  • 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:3580

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    8f51a6a4285edd13111e76227cccf059

    SHA1

    15b15591b741904d86176abdb79e16848df5943b

    SHA256

    bedd34b1d2d1809a5b0056790c58b7fe63e631f906271bb155b994068577fc9c

    SHA512

    44617abf435486be9975fd728759fe4d80251a79940e89059abaadbaeac04c2a60169c656783bd3eb517becf6ec14f8ef7c9c4f71b0bee2d36c46cc654002b8d

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

    8f51a6a4285edd13111e76227cccf059

    SHA1

    15b15591b741904d86176abdb79e16848df5943b

    SHA256

    bedd34b1d2d1809a5b0056790c58b7fe63e631f906271bb155b994068577fc9c

    SHA512

    44617abf435486be9975fd728759fe4d80251a79940e89059abaadbaeac04c2a60169c656783bd3eb517becf6ec14f8ef7c9c4f71b0bee2d36c46cc654002b8d