Analysis

  • max time kernel
    188s
  • max time network
    216s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 17:11

General

  • Target

    27ad3ad8da4f3ef37c637b58e1a537778bb2965630c773ce9ddcda972a19e8a3.exe

  • Size

    684KB

  • MD5

    41bbf329d25a4664ed18bb8f079980d0

  • SHA1

    be503850c64fca1bb91c8975084fb569e59be529

  • SHA256

    27ad3ad8da4f3ef37c637b58e1a537778bb2965630c773ce9ddcda972a19e8a3

  • SHA512

    8942136dcbf4d4176d07c99c60472252a8d6377bdcab32dfe36f6f15313b623bab57e1685296d900e55b2f447eda276100f46a528ee6767d4f76c24ee6db5c01

  • SSDEEP

    6144:+h3rzMYXh+02d1r5ZTYnQbc0w6LlANv4hituxp38u0:UrgQmd195KQ40wWlANv4h8u/8

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • UAC bypass 3 TTPs 12 IoCs
  • Adds policy Run key to start application 2 TTPs 17 IoCs
  • Disables RegEdit via registry modification 6 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 64 IoCs
  • Checks whether UAC is enabled 1 TTPs 6 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\27ad3ad8da4f3ef37c637b58e1a537778bb2965630c773ce9ddcda972a19e8a3.exe
    "C:\Users\Admin\AppData\Local\Temp\27ad3ad8da4f3ef37c637b58e1a537778bb2965630c773ce9ddcda972a19e8a3.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Adds policy Run key to start application
    • Disables RegEdit via registry modification
    • Loads dropped DLL
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1744
    • C:\Users\Admin\AppData\Local\Temp\hqvbjo.exe
      "C:\Users\Admin\AppData\Local\Temp\hqvbjo.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:588
    • C:\Users\Admin\AppData\Local\Temp\hqvbjo.exe
      "C:\Users\Admin\AppData\Local\Temp\hqvbjo.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • System policy modification
      PID:536

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    1.2MB

    MD5

    c50e7612455317a707528a0756cd09f3

    SHA1

    d81809bf402e39f9606ceec9f058403f0b4df046

    SHA256

    f53aa7a22c514ccb8e04edd1c88fb49d8c25d9601a9c29ba06a4256453122c54

    SHA512

    6c4c82fac9a6628bd462b7acfb88ea43445afb4b957310c8e340235416bc9eae8cf2e476fa12f8b457147149255d4162bccd058f841f99a05f04afea23686fd9

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

    Filesize

    1.2MB

    MD5

    c50e7612455317a707528a0756cd09f3

    SHA1

    d81809bf402e39f9606ceec9f058403f0b4df046

    SHA256

    f53aa7a22c514ccb8e04edd1c88fb49d8c25d9601a9c29ba06a4256453122c54

    SHA512

    6c4c82fac9a6628bd462b7acfb88ea43445afb4b957310c8e340235416bc9eae8cf2e476fa12f8b457147149255d4162bccd058f841f99a05f04afea23686fd9

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

    Filesize

    1.2MB

    MD5

    c50e7612455317a707528a0756cd09f3

    SHA1

    d81809bf402e39f9606ceec9f058403f0b4df046

    SHA256

    f53aa7a22c514ccb8e04edd1c88fb49d8c25d9601a9c29ba06a4256453122c54

    SHA512

    6c4c82fac9a6628bd462b7acfb88ea43445afb4b957310c8e340235416bc9eae8cf2e476fa12f8b457147149255d4162bccd058f841f99a05f04afea23686fd9

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

    Filesize

    1.2MB

    MD5

    c50e7612455317a707528a0756cd09f3

    SHA1

    d81809bf402e39f9606ceec9f058403f0b4df046

    SHA256

    f53aa7a22c514ccb8e04edd1c88fb49d8c25d9601a9c29ba06a4256453122c54

    SHA512

    6c4c82fac9a6628bd462b7acfb88ea43445afb4b957310c8e340235416bc9eae8cf2e476fa12f8b457147149255d4162bccd058f841f99a05f04afea23686fd9

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

    Filesize

    1.2MB

    MD5

    c50e7612455317a707528a0756cd09f3

    SHA1

    d81809bf402e39f9606ceec9f058403f0b4df046

    SHA256

    f53aa7a22c514ccb8e04edd1c88fb49d8c25d9601a9c29ba06a4256453122c54

    SHA512

    6c4c82fac9a6628bd462b7acfb88ea43445afb4b957310c8e340235416bc9eae8cf2e476fa12f8b457147149255d4162bccd058f841f99a05f04afea23686fd9

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

    Filesize

    1.2MB

    MD5

    c50e7612455317a707528a0756cd09f3

    SHA1

    d81809bf402e39f9606ceec9f058403f0b4df046

    SHA256

    f53aa7a22c514ccb8e04edd1c88fb49d8c25d9601a9c29ba06a4256453122c54

    SHA512

    6c4c82fac9a6628bd462b7acfb88ea43445afb4b957310c8e340235416bc9eae8cf2e476fa12f8b457147149255d4162bccd058f841f99a05f04afea23686fd9

  • memory/536-62-0x0000000000000000-mapping.dmp

  • memory/588-57-0x0000000000000000-mapping.dmp

  • memory/1744-54-0x0000000075A31000-0x0000000075A33000-memory.dmp

    Filesize

    8KB