Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07-03-2024 00:31

General

  • Target

    2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe

  • Size

    116KB

  • MD5

    2a34b004bed2b0c4c34981e72904124c

  • SHA1

    bbe554205c7de5012f09eb491296ce514c0ecde2

  • SHA256

    305accffa7f3c6fd1d086b85be4adfd476a9e4df57ec19825936f367aca24ac1

  • SHA512

    bee8e1fe55883c7e8e77c77a4f30cae67f90737f4aff46a0126df1db3730ef6957f7b30a6836a442ae1f7cd194e1bb382482035862d473ee2867c08f7558ffbb

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjCGYQbN/PKwNgerar/xw:T6a+rdOOtEvwDpjLzP

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\2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2164
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2972

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    116KB

    MD5

    8e433114c394d233054742d1c2577c4d

    SHA1

    a765c9ab437e03dba8380f354a83921f56e67f9b

    SHA256

    8e1743a3f3643f6c558b23f76e1c3c412860206d7047b6fac3217e9fd80b6bd1

    SHA512

    824d0c65ffa5b4b2cf56d246ae866f7339d94ade7360f040bb8b702e66402d8a839c1fd819663611b5fef1fd993c72e76bec14a5a28acf69c346a36b0dae7ddb

  • memory/2164-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2164-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/2164-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2164-3-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2164-14-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2972-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2972-18-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/2972-20-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2972-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB