Resubmissions

23-02-2023 13:58

230223-q979csga63 10

23-02-2023 13:58

230223-q91vaaga59 3

30-01-2023 00:58

230130-bbgw7adb9t 10

15-01-2023 07:31

230115-jcmg3abg69 10

15-01-2023 07:28

230115-jarn1aff51 3

15-01-2023 01:34

230115-by7fcscb6w 10

Analysis

  • max time kernel
    502s
  • max time network
    559s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-es
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-eslocale:es-esos:windows10-2004-x64systemwindows
  • submitted
    15-01-2023 01:34

General

  • Target

    working_attack.7z

  • Size

    925KB

  • MD5

    79c2ac9fb282708c97b2622b1dcf8428

  • SHA1

    bbfeb1b3a9379ca5fd894b8c5afa0b95f5eef1b7

  • SHA256

    db8eb8347ed084c3ee3707ad032743e350157abcaf2817e5f15777b20c554b7f

  • SHA512

    2334c5568ec148985245936d8301e8677b0d6b9809943f1c705ab80572be150d598525df205b8902f8739322f1faa42eb52087048cf57164311002a8e32d2f5f

  • SSDEEP

    24576:y7zYd9xdNsC/TbVTUGTL/g5zXCXPukSSw1hSD6xTBeJw6HXss5:ezY3bWYTUkhhSSuhS0G3s8

Score
10/10

Malware Config

Signatures

  • UAC bypass 3 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Kills process with taskkill 1 IoCs
  • Modifies registry class 36 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\working_attack.7z
    1⤵
    • Modifies registry class
    PID:4276
  • C:\Windows\system32\OpenWith.exe
    C:\Windows\system32\OpenWith.exe -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:5108
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x330 0x244
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3740
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2588
    • C:\Program Files\7-Zip\7zG.exe
      "C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\Desktop\working_attack\" -spe -an -ai#7zMap7305:84:7zEvent15511
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:2200
    • C:\Users\Admin\Desktop\working_attack\45.exe
      "C:\Users\Admin\Desktop\working_attack\45.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4664
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
        2⤵
        • UAC bypass
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4984
        • C:\Windows\SysWOW64\taskkill.exe
          "taskkill.exe" /im chrome.exe /f
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:4340

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Privilege Escalation

    Bypass User Account Control

    1
    T1088

    Defense Evasion

    Bypass User Account Control

    1
    T1088

    Disabling Security Tools

    1
    T1089

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    1
    T1005

    Command and Control

    Web Service

    1
    T1102

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\Desktop\working_attack\45.exe
      Filesize

      872KB

      MD5

      c56b5f0201a3b3de53e561fe76912bfd

      SHA1

      2a4062e10a5de813f5688221dbeb3f3ff33eb417

      SHA256

      237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

      SHA512

      195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

    • C:\Users\Admin\Desktop\working_attack\S.a3x
      Filesize

      1.5MB

      MD5

      536073c3748e4eb7bbee303547b7227d

      SHA1

      4397b1d855e799f4d38467a848cda2273c1c6c73

      SHA256

      8e289b8dfc7e4994d808ef79a88adb513365177604fe587f6efa812f284e21a3

      SHA512

      3b1e1c853c362770a4ddcc4c7b3b932f9adf9db006bf649266a1b0c9c6c7b0afb7f0cd5687f672ed58908c9af8b56a830888b6f30defb97297cbde8de18f7651

    • memory/4340-148-0x0000000000000000-mapping.dmp
    • memory/4984-141-0x00000000064F0000-0x0000000006566000-memory.dmp
      Filesize

      472KB

    • memory/4984-143-0x0000000007130000-0x000000000714E000-memory.dmp
      Filesize

      120KB

    • memory/4984-138-0x0000000005910000-0x00000000059A2000-memory.dmp
      Filesize

      584KB

    • memory/4984-139-0x0000000005890000-0x00000000058F6000-memory.dmp
      Filesize

      408KB

    • memory/4984-140-0x0000000007170000-0x0000000007332000-memory.dmp
      Filesize

      1.8MB

    • memory/4984-135-0x0000000001200000-0x00000000012A6000-memory.dmp
      Filesize

      664KB

    • memory/4984-142-0x0000000007870000-0x0000000007D9C000-memory.dmp
      Filesize

      5.2MB

    • memory/4984-137-0x0000000005DC0000-0x0000000006364000-memory.dmp
      Filesize

      5.6MB

    • memory/4984-144-0x00000000076E0000-0x00000000077E2000-memory.dmp
      Filesize

      1.0MB

    • memory/4984-145-0x00000000080A0000-0x00000000080B2000-memory.dmp
      Filesize

      72KB

    • memory/4984-146-0x0000000008100000-0x000000000813C000-memory.dmp
      Filesize

      240KB

    • memory/4984-147-0x00000000084C0000-0x00000000084E0000-memory.dmp
      Filesize

      128KB

    • memory/4984-134-0x0000000000000000-mapping.dmp
    • memory/4984-149-0x0000000008560000-0x00000000085B0000-memory.dmp
      Filesize

      320KB