Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    14-02-2024 15:31

General

  • Target

    2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe

  • Size

    85KB

  • MD5

    c403314e60ff1c2d76dffcd6feed72db

  • SHA1

    997174c2b795217d4ba2667eaddbbe763b2f51ab

  • SHA256

    d5e93a60ff3e1dffbd6d0a05b5cac1c6f46a4b906b0c18d1f57d0fd097d05b22

  • SHA512

    bf2119048dd9bab0adfc4df8c64120e992a514ba231cfa46f237a49bb905683cd719a33959c8b3000301a21fe866b52a75f276176fcb84e594746e2c007acd30

  • SSDEEP

    768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtISET:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgC

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\asih.exe
    "C:\Users\Admin\AppData\Local\Temp\asih.exe"
    1⤵
    • Executes dropped EXE
    PID:2832
  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2312

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    86KB

    MD5

    a3753a7abdbefea837970d886312aefd

    SHA1

    642ef7e08eab3fee379ebc0f11db3ba0f3b04924

    SHA256

    7aba2e5e9c849fc5855999bec9b58050db46a31ff9e21511ea880a612d5b9f45

    SHA512

    c6ddc3f9f46f79a7bbb254103974f7d53f9177367d87c9be78109cc826fe5ea27b75708c44519836ecb21c8397ceddfa4452842e4b9e855bb567a7571937da99

  • memory/2312-15-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2312-5-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/2312-2-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/2312-1-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/2312-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2832-25-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2832-18-0x00000000004B0000-0x00000000004B6000-memory.dmp

    Filesize

    24KB

  • memory/2832-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2832-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB