Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    24-04-2024 10:23

General

  • Target

    2024-04-24_1201f9a90f940a2ec3ca2e14522bd049_cryptolocker.exe

  • Size

    55KB

  • MD5

    1201f9a90f940a2ec3ca2e14522bd049

  • SHA1

    e7cb29d678908b3adfdba6acdcfb4cb584f1b3d0

  • SHA256

    ad29eb33f51cac0dd459f5c5be2448e6af2b158308d5e79817f971c2630bf1b1

  • SHA512

    13f667e5762818ea7d02a50a8142659ed6c847ec0a22f31bd2932c00e1969894e3d2859e50b6e7f40df87762c97ffba4c97deabf609b8c05db6efb6deb3ce6a2

  • SSDEEP

    768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlj:bP9g/xtCS3Dxx04

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 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 UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-24_1201f9a90f940a2ec3ca2e14522bd049_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-24_1201f9a90f940a2ec3ca2e14522bd049_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2204
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:1984

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    55KB

    MD5

    cc0cef6f3d7f768845ac5af0a971e3fe

    SHA1

    0e2d994c6b6d9c3e94637dde2ac5c1920a82e31c

    SHA256

    39f99958c7b16329f32f84f7613e071bec6eda8c17ae613ddbc4918ec0acc0a5

    SHA512

    cbe3f03ba0866bb26f2cedce2f56fd29cb431fb8a0a8b52c5cb560e5f29e3d25201e370645fab1db73dda29f52d1888e79a5bd9fad6449e3343da8276085ee6d

  • memory/1984-17-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/1984-19-0x0000000001BC0000-0x0000000001BC6000-memory.dmp

    Filesize

    24KB

  • memory/2204-0-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/2204-1-0x0000000000390000-0x0000000000396000-memory.dmp

    Filesize

    24KB

  • memory/2204-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2204-9-0x0000000000390000-0x0000000000396000-memory.dmp

    Filesize

    24KB

  • memory/2204-13-0x0000000000530000-0x000000000053E000-memory.dmp

    Filesize

    56KB