Analysis

  • max time kernel
    163s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    12-02-2022 04:12

General

  • Target

    15cd7a5481499f48ecdd6669b1d91f778a0c122ec9a6abdce347145f060e8c07.exe

  • Size

    36KB

  • MD5

    2799d8c94d56a47f357d5994d0267a84

  • SHA1

    b41132aff85ebc5c7a3b2f9915deb5d7d216f4f3

  • SHA256

    15cd7a5481499f48ecdd6669b1d91f778a0c122ec9a6abdce347145f060e8c07

  • SHA512

    4e8cd7b9ed6cf96a6ae89c069598c5cc2b2a63df61712c1e60174d2ec7c1f2ba4b62a14875621e8d9d6b0952f2c4b4bd537d931c9e64346dd52462fc36b7d93e

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 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\15cd7a5481499f48ecdd6669b1d91f778a0c122ec9a6abdce347145f060e8c07.exe
    "C:\Users\Admin\AppData\Local\Temp\15cd7a5481499f48ecdd6669b1d91f778a0c122ec9a6abdce347145f060e8c07.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3992
    • C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      C:\Users\Admin\AppData\Local\Temp\MicroMedia\MediaCenter.exe
      2⤵
      • Executes dropped EXE
      PID:396
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 & del /q "C:\Users\Admin\AppData\Local\Temp\15cd7a5481499f48ecdd6669b1d91f778a0c122ec9a6abdce347145f060e8c07.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:1596
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1028
  • 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:3964
  • 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:3968

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    ffec2c29711a457edb047e4981b637df

    SHA1

    5aa19290d99c60384a5d379e1e8d9507158ff8fa

    SHA256

    00a4cd3eb4581febcad1a499db17005ea0d05446537f2c5e0d74f2b592a6b86e

    SHA512

    67ad3e9463857c74813c829477ba198e33690a581af68e26b0cd7d1dbbcfaa4dc2bc9812dbb926ee63a558fdc1c481f0bc09ed130c5d507aa1b210ead313ba5f

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

    MD5

    ffec2c29711a457edb047e4981b637df

    SHA1

    5aa19290d99c60384a5d379e1e8d9507158ff8fa

    SHA256

    00a4cd3eb4581febcad1a499db17005ea0d05446537f2c5e0d74f2b592a6b86e

    SHA512

    67ad3e9463857c74813c829477ba198e33690a581af68e26b0cd7d1dbbcfaa4dc2bc9812dbb926ee63a558fdc1c481f0bc09ed130c5d507aa1b210ead313ba5f