Analysis

  • max time kernel
    138s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-10-2023 11:14

General

  • Target

    NEAS.2023-09-06_e4492675da60f70488d6d000bf349af7_cryptolocker_JC.exe

  • Size

    29KB

  • MD5

    e4492675da60f70488d6d000bf349af7

  • SHA1

    266a34016ed39bb24a67bbe720e585589ee3a843

  • SHA256

    0006dd7155118f6af481cbb9ba89f84b91b2197f8780611a8a2f4ed0e5a0c600

  • SHA512

    6a8b129fc5ad5927f5fd7f8391f1db214329617313edc79437fd10271661cf20ade198c47d91ecf1bd34b2c5b9b8f6519ab3ba5f2e88721362c93a862dc1f3f4

  • SSDEEP

    384:v0VkMq01bJ3wtEwPS8HLEh+Jagz+3be+26Rsn1rCcOQtOOtEvwDpjqIGRS/Vb9hk:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4zI

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-06_e4492675da60f70488d6d000bf349af7_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-06_e4492675da60f70488d6d000bf349af7_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:3832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    29KB

    MD5

    242a9f1175fffbf83a98fed9cd5504ff

    SHA1

    18c6504a360981412f8f85c9f40c86aa262d0177

    SHA256

    543e0172a1fa5a90729fb328fa3aef26b47715bd1460f34c4531d53b7a80dcd7

    SHA512

    ecf200785eebcf3a0f2a4addeca523829976d4ada863e6cb80eaee15dfb3657d7a1e97b4249590a8509f1824b9736cf5b0531184f2139868eac86a85591de8af

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

    Filesize

    29KB

    MD5

    242a9f1175fffbf83a98fed9cd5504ff

    SHA1

    18c6504a360981412f8f85c9f40c86aa262d0177

    SHA256

    543e0172a1fa5a90729fb328fa3aef26b47715bd1460f34c4531d53b7a80dcd7

    SHA512

    ecf200785eebcf3a0f2a4addeca523829976d4ada863e6cb80eaee15dfb3657d7a1e97b4249590a8509f1824b9736cf5b0531184f2139868eac86a85591de8af

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

    Filesize

    29KB

    MD5

    242a9f1175fffbf83a98fed9cd5504ff

    SHA1

    18c6504a360981412f8f85c9f40c86aa262d0177

    SHA256

    543e0172a1fa5a90729fb328fa3aef26b47715bd1460f34c4531d53b7a80dcd7

    SHA512

    ecf200785eebcf3a0f2a4addeca523829976d4ada863e6cb80eaee15dfb3657d7a1e97b4249590a8509f1824b9736cf5b0531184f2139868eac86a85591de8af

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1972-0-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1972-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1972-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3832-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3832-18-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB