Analysis

  • max time kernel
    181s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 13:58

General

  • Target

    90805fff7ed8f79337a15966b37dbd21e139c67046cb836e00ce880b588b8d24.exe

  • Size

    601KB

  • MD5

    a6fd45783ff3b52ef8a598971ea0431e

  • SHA1

    5276bce3f2fbd48842094af1c7f0efe450ba4d3e

  • SHA256

    90805fff7ed8f79337a15966b37dbd21e139c67046cb836e00ce880b588b8d24

  • SHA512

    b7fd383badf372d2a1ea11992166281d65afcb6ddb724d1790ca07f6c5d30c86fe4c25b3b1bfdd9be35178ccc33211a30f7f776aaf6256152849829ede7528ba

  • SSDEEP

    12288:xORNsuj7LM2e2Bl4St2AxKeAN+GKnvLof/9WraN0bfs3kZwD+ZAdL:xsNsmM2lBmSt2A+yTof/YrdfqkZwD4AV

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\90805fff7ed8f79337a15966b37dbd21e139c67046cb836e00ce880b588b8d24.exe
    "C:\Users\Admin\AppData\Local\Temp\90805fff7ed8f79337a15966b37dbd21e139c67046cb836e00ce880b588b8d24.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks computer location settings
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4812
    • C:\Users\Admin\AppData\Local\Temp\n1387\s1387.exe
      "C:\Users\Admin\AppData\Local\Temp\n1387\s1387.exe" eb653df30eeab42e63fa1c85lBsfXUtqzE8hAV/GX6KPjPD3ZuigO2wjAx1XmfpLXGRV62ec4UbLZBALyDyFuKiT+MHy2d8eUNX6awqQCB6/VC4IXtLD4KgEkxloQHHoSqOcDLPWi+vlGffx+DnGTjgMHLbjzSWtplmnCPJfGeTJiRc= /v "C:\Users\Admin\AppData\Local\Temp\90805fff7ed8f79337a15966b37dbd21e139c67046cb836e00ce880b588b8d24.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3716

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n1387\s1387.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • C:\Users\Admin\AppData\Local\Temp\n1387\s1387.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • memory/3716-132-0x0000000000000000-mapping.dmp

  • memory/3716-136-0x00000000007B0000-0x00000000007C0000-memory.dmp

    Filesize

    64KB

  • memory/3716-137-0x00000000007B0000-0x00000000007C0000-memory.dmp

    Filesize

    64KB