Analysis

  • max time kernel
    147s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/07/2024, 18:12

General

  • Target
    476756d791fcc5f26b7a57f6fca1d37057bbdd14ae13d5361b3c3d54319ad455.exe
  • Size 10.6MB
  • Sample240722-ws9zhs1bpl
  • SHA256 476756d791fcc5f26b7a57f6fca1d37057bbdd14ae13d5361b3c3d54319ad455
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cobaltstrike

C2
  • http://172.16.100.220:80/iVUI

Attributes
  • user_agent

    User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Trident/4.0)

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 20 IoCs
  • Detects Pyinstaller 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\476756d791fcc5f26b7a57f6fca1d37057bbdd14ae13d5361b3c3d54319ad455.exe
    "C:\Users\Admin\AppData\Local\Temp\476756d791fcc5f26b7a57f6fca1d37057bbdd14ae13d5361b3c3d54319ad455.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5004
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\imageEncoding.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\imageEncoding.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4492
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\imageEncoding.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\imageEncoding.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2972
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c "ver"
          4⤵
            PID:708

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          encodedImage.png

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\encodedImage.png
          • Size 7KB
          • SHA256 e4cfa752914737959eb0bd4d4e9b1a13a7aff801550b4bf971177ad9d8fe6232
          • MD5 SHA1 SHA512 SSDEEP

          imageEncoding.exe

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\imageEncoding.exe
          • Size 10.5MB
          • SHA256 cd73f29ef4dbac54ee33731aaa53426f137f4bb84790676d711558f1d3d4af35
          • MD5 SHA1 SHA512 SSDEEP

          _imaging.cp39-win_amd64.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\PIL\_imaging.cp39-win_amd64.pyd
          • Size 2.3MB
          • SHA256 5d6b6eea9d32d6006ed4d99c47c246ebe6f972ed9ccc7cc8735313ae6f6c1095
          • MD5 SHA1 SHA512 SSDEEP

          VCRUNTIME140.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\VCRUNTIME140.dll
          • Size 94KB
          • SHA256 ded5adaa94341e6c62aea03845762591666381dca30eb7c17261dd154121b83e
          • MD5 SHA1 SHA512 SSDEEP

          _asyncio.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\_asyncio.pyd
          • Size 64KB
          • SHA256 6241f72162099095f111819fd5b9b2a0995ed7cf45ca08f1d0134ab7b3fe601a
          • MD5 SHA1 SHA512 SSDEEP

          _bz2.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\_bz2.pyd
          • Size 84KB
          • SHA256 cd04ebe932b2cb2fd7f01c25412bddd77b476fa47d0aff69a04a27d3bfe4b37b
          • MD5 SHA1 SHA512 SSDEEP

          _ctypes.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\_ctypes.pyd
          • Size 124KB
          • SHA256 11daef02afe45d9f3987bab5c2b6ef75b2b6f6f79704c45675d532f090f14b8b
          • MD5 SHA1 SHA512 SSDEEP

          _decimal.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\_decimal.pyd
          • Size 265KB
          • SHA256 67a47d85cc1a21069610c85da64fc031231d43af7876dfc48361c57d88efee0b
          • MD5 SHA1 SHA512 SSDEEP

          _elementtree.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\_elementtree.pyd
          • Size 186KB
          • SHA256 16525f0e09ab725b68e190aa5e8cf918b100f0f2d174742495bfbe20c2826bd8
          • MD5 SHA1 SHA512 SSDEEP

          _lzma.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\_lzma.pyd
          • Size 159KB
          • SHA256 4213fbb6936ad3eac1e1ba28f10e15719176bc3a59ff01ddc6828dd7eee52132
          • MD5 SHA1 SHA512 SSDEEP

          _overlapped.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\_overlapped.pyd
          • Size 45KB
          • SHA256 42c7a03bffe76eafdee596f6b4c3ff950ff8808a31d194932c2bf48fdfc7f7c2
          • MD5 SHA1 SHA512 SSDEEP

          _queue.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\_queue.pyd
          • Size 29KB
          • SHA256 95e1c419e08d8ab229b8c64d51fd301cd9d75a659dfc05e75b0317ca0a4f22e3
          • MD5 SHA1 SHA512 SSDEEP

          _socket.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\_socket.pyd
          • Size 78KB
          • SHA256 a611e9b4f4e5fe67e945b771d79cf15c48441ecfa11ce186cec9bf233dc20c0d
          • MD5 SHA1 SHA512 SSDEEP

          _ssl.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\_ssl.pyd
          • Size 152KB
          • SHA256 d7610dd6be63aada4fe1895b64bbac961840257c6988e1f68bbf3d8e486b5a45
          • MD5 SHA1 SHA512 SSDEEP

          base_library.zip

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\base_library.zip
          • Size 1014KB
          • SHA256 49c99ea00f60dd60b58a47220e925343928973f50213b8660b1fba2626e8c948
          • MD5 SHA1 SHA512 SSDEEP

          libcrypto-1_1.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\libcrypto-1_1.dll
          • Size 3.3MB
          • SHA256 9c0a0a11629cced6a064932e95a0158ee936739d75a56338702fed97cb0bad55
          • MD5 SHA1 SHA512 SSDEEP

          libffi-7.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\libffi-7.dll
          • Size 32KB
          • SHA256 f60dd9f2fcbd495674dfc1555effb710eb081fc7d4cae5fa58c438ab50405081
          • MD5 SHA1 SHA512 SSDEEP

          libssl-1_1.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\libssl-1_1.dll
          • Size 682KB
          • SHA256 ed1c8769f5096afd000fc730a37b11177fcf90890345071ab7fbceac684d571f
          • MD5 SHA1 SHA512 SSDEEP

          pyexpat.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\pyexpat.pyd
          • Size 200KB
          • SHA256 9e90ade54232d61d106b182326085fc843c8b48b363733865abe40652d78614c
          • MD5 SHA1 SHA512 SSDEEP

          python39.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\python39.dll
          • Size 4.3MB
          • SHA256 f4609ec3bbcc74ed9257e3440ec15adf3061f7162a89e4e9a370e1c2273370a1
          • MD5 SHA1 SHA512 SSDEEP

          select.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\select.pyd
          • Size 28KB
          • SHA256 cd31f9f557d57a6909186940eafe483c37de9a7251e604644a747c7ec26b7823
          • MD5 SHA1 SHA512 SSDEEP

          ucrtbase.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI44922\ucrtbase.dll
          • Size 977KB
          • SHA256 d804ea40eacfc22a5e029b66d6d4f83d81f76a7ead80313b33839253f90af6b7
          • MD5 SHA1 SHA512 SSDEEP

          memory/2972-129-0x00000217F8F90000-0x00000217F8F91000-memory.dmp