Resubmissions

26-10-2023 15:49

231026-s9ggraee74 10

11-10-2023 12:16

231011-pfymdseg4t 7

Analysis

  • max time kernel
    125s
  • max time network
    131s
  • platform
    windows10-1703_x64
  • resource
    win10-20231023-en
  • resource tags

    arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system
  • submitted
    26-10-2023 15:49

General

  • Target

    454bd68088f17718527b300134cae3eed1c7db3ba7ed9e08d291ef7729229a79.exe

  • Size

    615KB

  • MD5

    dbf727e1effc3631ae634d95a0d88bf3

  • SHA1

    c02d2a18eca78b91b4c4e9e7a45c8d17c8c5bbca

  • SHA256

    454bd68088f17718527b300134cae3eed1c7db3ba7ed9e08d291ef7729229a79

  • SHA512

    24e0da5f90659aa21038e7728169b014a9ca897aaefe2140b75b680955ddd9de74dc320948c4cc743ccbf27f3713879e21a7e5c23f54c32cc0f8ae790cb9fc68

  • SSDEEP

    12288:8yqE9N0R/YPT7arwRhacn1J0zxzWnMZfgspsa:nlERAP6sRh/1UxiApZ

Malware Config

Extracted

Family

bunnyloader

C2

http://37.139.129.145/Bunny/StealerLogs/BunnyLogs_

Signatures

  • BunnyLoader

    BunnyLoader is a loader family written in C++.

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Gathers system information 1 TTPs 1 IoCs

    Runs systeminfo.exe.

  • Suspicious use of AdjustPrivilegeToken 42 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\454bd68088f17718527b300134cae3eed1c7db3ba7ed9e08d291ef7729229a79.exe
    "C:\Users\Admin\AppData\Local\Temp\454bd68088f17718527b300134cae3eed1c7db3ba7ed9e08d291ef7729229a79.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1152
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c wmic /namespace:\\root\SecurityCenter2 path AntiVirusProduct get displayName /value
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2904
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic /namespace:\\root\SecurityCenter2 path AntiVirusProduct get displayName /value
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4760
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c systeminfo | findstr /B /C:"OS Name"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3052
      • C:\Windows\SysWOW64\systeminfo.exe
        systeminfo
        3⤵
        • Gathers system information
        PID:2476
      • C:\Windows\SysWOW64\findstr.exe
        findstr /B /C:"OS Name"
        3⤵
          PID:1092

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1152-0-0x0000000000D20000-0x0000000000E98000-memory.dmp

      Filesize

      1.5MB

    • memory/1152-3-0x0000000000D20000-0x0000000000E98000-memory.dmp

      Filesize

      1.5MB

    • memory/1152-5-0x0000000000D20000-0x0000000000E98000-memory.dmp

      Filesize

      1.5MB