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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/01/2024, 02:22

General

  • Target

    2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe

  • Size

    56KB

  • MD5

    06c864b764d59b4b4f05d39fc7171b2e

  • SHA1

    74afbdf27f7108ed0ed136810a78dd708be237df

  • SHA256

    309151278f65310dfe4156c365285fc4b7dc34dcf712f76e761dccd8d59a1526

  • SHA512

    9ca00be67a3b6250968eda23aaf084aa27faecab261fa6c7c20e40ebb84f88d3c2e469b5b1b006011b33cdfb87d9ffc2df72f70b1f01d74d63193df6d37417fa

  • SSDEEP

    768:zQz7yVEhs9+syJP6ntOOtEvwDpjFeV0ZOfcpLzbO:zj+soPSMOtEvwDpj4yzbO

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 6 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1604
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:224

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    477e073411aace68923bbd6307aaf11a

    SHA1

    1928f71a969eb4ee4d71d9696e1a6e4fe7934948

    SHA256

    05a02238519914ab5fd3f6112ee6e6c51b110a573f0784e4f6084d020e061a7c

    SHA512

    7aa42db0267d79f7023f3a4250223d403a48ddc7c4e262ce2fa1094ae0a45c253d420aa87e676197f95b562cd6ff88dcd777480ad6688948b0508177509f2f9c

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

    Filesize

    56KB

    MD5

    78473c3606232bdb7ba29c1e75254d17

    SHA1

    b38153659d16b265bc60bd9b4cab200910abf04c

    SHA256

    dfba0deb925e32d254580af4f5bcfd106b5826ff49bf3b13f93e8e3afcc8a511

    SHA512

    9493cd0b0f97506f9eb69b3e9a9bf5e47542e83e1309fe97e28ba7adb593114102741464ceb5601c2b807fed80d3689fe87adb72ab990416c40eb620ad91773c

  • memory/224-20-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/224-26-0x00000000021E0000-0x00000000021E6000-memory.dmp

    Filesize

    24KB

  • memory/224-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/224-55-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1604-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1604-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1604-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1604-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1604-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB