Analysis

  • max time kernel
    40s
  • max time network
    102s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 08:57

General

  • Target

    a40e261ffa7ac9e8e214a5003f8050278948cde414030c562409623064bba62d.exe

  • Size

    601KB

  • MD5

    16b16a6e82528ee1a744bd77421d5c4e

  • SHA1

    f52489e58a1ee447b72984c1b4929306f54f7ca5

  • SHA256

    a40e261ffa7ac9e8e214a5003f8050278948cde414030c562409623064bba62d

  • SHA512

    d25bf017844bcc2803024fd3e85dcd15f05b21261152a3052463a38940fbe1a2a5408d3f563b964c380b88cfcb98928702a41ea15e39281c939ecc9e1282e1f9

  • SSDEEP

    12288:xORNsuj7LM2e2Bl4St2AxKeAN+GKnvLof/9WraN0bfs3kZwD+ZAdL:xsNsmM2lBmSt2A+yTof/YrdfqkZwD4AN

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 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 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a40e261ffa7ac9e8e214a5003f8050278948cde414030c562409623064bba62d.exe
    "C:\Users\Admin\AppData\Local\Temp\a40e261ffa7ac9e8e214a5003f8050278948cde414030c562409623064bba62d.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Loads dropped DLL
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1248
    • C:\Users\Admin\AppData\Local\Temp\n4146\s4146.exe
      "C:\Users\Admin\AppData\Local\Temp\n4146\s4146.exe" 004d077481c66e4a1f515e09+AwH8Jj2swqrG7gkujm93M8f8At+epYYLQNXjRLFruTdQ0ZEPSw0JmQf/cyWWHizBWBeP7RGgX2isS5nQvK3/vYHE1nCzTASYXTj268uc82+8Zm5sInTXrp1Nunh+3xZD04fx6DzQyl/ngbFeq/7kesSGWHw7c+VOXw36OE= /v "C:\Users\Admin\AppData\Local\Temp\a40e261ffa7ac9e8e214a5003f8050278948cde414030c562409623064bba62d.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1136

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\n4146\s4146.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • C:\Users\Admin\AppData\Local\Temp\n4146\s4146.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • \Users\Admin\AppData\Local\Temp\n4146\s4146.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • \Users\Admin\AppData\Local\Temp\n4146\s4146.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • \Users\Admin\AppData\Local\Temp\n4146\s4146.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • \Users\Admin\AppData\Local\Temp\n4146\s4146.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • memory/1136-62-0x000007FEF3940000-0x000007FEF4363000-memory.dmp

    Filesize

    10.1MB

  • memory/1136-63-0x000007FEF28A0000-0x000007FEF3936000-memory.dmp

    Filesize

    16.6MB

  • memory/1136-64-0x0000000000966000-0x0000000000985000-memory.dmp

    Filesize

    124KB

  • memory/1136-65-0x000007FEEDCE0000-0x000007FEEEB6F000-memory.dmp

    Filesize

    14.6MB

  • memory/1136-66-0x000007FEF25B0000-0x000007FEF289A000-memory.dmp

    Filesize

    2.9MB

  • memory/1136-67-0x0000000000966000-0x0000000000985000-memory.dmp

    Filesize

    124KB

  • memory/1136-68-0x0000000000966000-0x0000000000985000-memory.dmp

    Filesize

    124KB

  • memory/1248-54-0x0000000075351000-0x0000000075353000-memory.dmp

    Filesize

    8KB