Analysis

  • max time kernel
    69s
  • max time network
    71s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    12-11-2024 19:48

General

  • Target

    aaa.exe

  • Size

    229KB

  • MD5

    0b7b5b3a185a737bc8fde7fba7bb9e32

  • SHA1

    1031e26d6884fcc411a69332f897d9f2e1cb9bd8

  • SHA256

    54eafd742f090b4beb346283bf9568451918a7123573f24a5df5730fe14d356f

  • SHA512

    180678c18eb374fa69526baa48cc317bb55873f2380254c97ad97b6137f4e9dfb2214a26b04c2a3588068e979b8f2d142330b77ea5cba1a743e5450eeff3fa21

  • SSDEEP

    6144:9loZM+rIkd8g+EtXHkv/iD4kl0h+8D/0wVA+Pv+AEb8e1mGi:foZtL+EP8kl0h+8D/0wVA+Pv+dM

Score
10/10

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Umbral family
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aaa.exe
    "C:\Users\Admin\AppData\Local\Temp\aaa.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3100
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4788
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\New Text Document.txt
    1⤵
      PID:3784

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2272-0-0x00007FFC09333000-0x00007FFC09335000-memory.dmp

      Filesize

      8KB

    • memory/2272-1-0x000002A4649E0000-0x000002A464A20000-memory.dmp

      Filesize

      256KB

    • memory/2272-2-0x00007FFC09330000-0x00007FFC09DF2000-memory.dmp

      Filesize

      10.8MB

    • memory/2272-4-0x00007FFC09330000-0x00007FFC09DF2000-memory.dmp

      Filesize

      10.8MB

    • memory/4788-7-0x0000015FD8C30000-0x0000015FD8C31000-memory.dmp

      Filesize

      4KB

    • memory/4788-5-0x0000015FD8C30000-0x0000015FD8C31000-memory.dmp

      Filesize

      4KB

    • memory/4788-6-0x0000015FD8C30000-0x0000015FD8C31000-memory.dmp

      Filesize

      4KB

    • memory/4788-15-0x0000015FD8C30000-0x0000015FD8C31000-memory.dmp

      Filesize

      4KB

    • memory/4788-17-0x0000015FD8C30000-0x0000015FD8C31000-memory.dmp

      Filesize

      4KB

    • memory/4788-16-0x0000015FD8C30000-0x0000015FD8C31000-memory.dmp

      Filesize

      4KB

    • memory/4788-14-0x0000015FD8C30000-0x0000015FD8C31000-memory.dmp

      Filesize

      4KB

    • memory/4788-13-0x0000015FD8C30000-0x0000015FD8C31000-memory.dmp

      Filesize

      4KB

    • memory/4788-12-0x0000015FD8C30000-0x0000015FD8C31000-memory.dmp

      Filesize

      4KB

    • memory/4788-11-0x0000015FD8C30000-0x0000015FD8C31000-memory.dmp

      Filesize

      4KB