Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    19-04-2024 04:10

General

  • Target

    2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe

  • Size

    68KB

  • MD5

    850659d463094b653a5447beae0f6b91

  • SHA1

    cd865a5bf64e8d713bfe0a92c84ceaedd1de6fba

  • SHA256

    3dd59d0cd59eb8aeb9d2e3b047f22749681e45ae0e4018fd04bf068183c2d90c

  • SHA512

    540fc63a0e27f7d8c4c1506fbcb38cdb7797479094c65adaeef0b121f519e9d319f278c2b0e1e97b978fbbbc978d4e88d30384dc7a16d7120fbb84b63d96c3ba

  • SSDEEP

    768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PZ:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAZ

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2036

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\asih.exe

    Filesize

    68KB

    MD5

    862112f14a280b0e04207da658822ce5

    SHA1

    f2e2e5f20482d8f9327bf758b04bd6e19397de36

    SHA256

    0ee2cc3baab880f277727598777e80e91419eb40eaf2cc53b3047eac4c0722e1

    SHA512

    aa6e4a10e601bf8438af94af635cc9f8ab6b97763bd4a079728bf46c3bd7d878769f2dfa8a5a68248ac4cc403e8a27604281971667964bee801afc3af8a4cb49

  • memory/1656-0-0x0000000000440000-0x0000000000446000-memory.dmp

    Filesize

    24KB

  • memory/1656-1-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1656-3-0x0000000000440000-0x0000000000446000-memory.dmp

    Filesize

    24KB

  • memory/1656-2-0x0000000000480000-0x0000000000486000-memory.dmp

    Filesize

    24KB

  • memory/1656-15-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1656-16-0x0000000002220000-0x000000000222F000-memory.dmp

    Filesize

    60KB

  • memory/2036-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2036-19-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2036-26-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2036-27-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB