Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 00:56

General

  • Target

    2024-05-23_d79ddb5166c86a0319bd037897600d36_cryptolocker.exe

  • Size

    48KB

  • MD5

    d79ddb5166c86a0319bd037897600d36

  • SHA1

    778e03cac7641f4a32b380e6de10bc0d37bf59f8

  • SHA256

    10c81f973b007de345f418e4c3450a1ad79cbbe7346614aafb66e5120dc44888

  • SHA512

    7b77119332bbf8d028c4b2c9f3527979793ec68aad5ba238105df94b9c543f01184ffde04d68354b0dfc84053898d7171cb6b432f5141f4c93d6ccd8b6e36871

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0nY:vj+jsMQMOtEvwDpj5HczerLO04Br

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • 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\2024-05-23_d79ddb5166c86a0319bd037897600d36_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_d79ddb5166c86a0319bd037897600d36_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3400
    • 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:3180

Network

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    48KB

    MD5

    860ef854eb6e5497c16b7b7112e845a2

    SHA1

    5d9d85f22745443c266f85735bc0727f0f2c7c72

    SHA256

    66b99e83f43c69c9ac7592ef756e49e2eb2a7d54dfaf647c6d749de4638c738c

    SHA512

    95707761bea1452c5f148d916118380cb98dfe10c74faba79658615e4ab616d9a153b2b39dcc72edb411fc165b40ae7480e42db292b6ce9347e9603aaa130cc1

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

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3180-17-0x0000000000660000-0x0000000000666000-memory.dmp
    Filesize

    24KB

  • memory/3180-23-0x00000000004E0000-0x00000000004E6000-memory.dmp
    Filesize

    24KB

  • memory/3400-0-0x00000000004D0000-0x00000000004D6000-memory.dmp
    Filesize

    24KB

  • memory/3400-1-0x00000000004D0000-0x00000000004D6000-memory.dmp
    Filesize

    24KB

  • memory/3400-2-0x00000000004F0000-0x00000000004F6000-memory.dmp
    Filesize

    24KB