Analysis

  • max time kernel
    195s
  • max time network
    204s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 10:30

General

  • Target

    f483d85d62d36b5e63c51c4a4794d02893e8d93f6275e08afb934a0fde86fb17.exe

  • Size

    601KB

  • MD5

    fc8f1bd4bf869eb5a565add47a901389

  • SHA1

    1198edce19f7bf138eac63b16ea3641093362aaa

  • SHA256

    f483d85d62d36b5e63c51c4a4794d02893e8d93f6275e08afb934a0fde86fb17

  • SHA512

    ac3057271ce975259056d2539e5497cac5a34db7b37a26f22cc8713328169abb48c1963ca214148037d4220b24e139c25b8e1b345e0a0e69e4a0f1a61ae29920

  • SSDEEP

    12288:xORNsuj7LM2e2Bl4St2AxKeAN+GKnvLof/9WraN0bfs3kZwD+ZAd/:xsNsmM2lBmSt2A+yTof/YrdfqkZwD4Al

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 8 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\f483d85d62d36b5e63c51c4a4794d02893e8d93f6275e08afb934a0fde86fb17.exe
    "C:\Users\Admin\AppData\Local\Temp\f483d85d62d36b5e63c51c4a4794d02893e8d93f6275e08afb934a0fde86fb17.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:4480
    • C:\Users\Admin\AppData\Local\Temp\n8741\s8741.exe
      "C:\Users\Admin\AppData\Local\Temp\n8741\s8741.exe" 21848a2055db9bd37c883ef0eA98HcRW3bBHMYJxeulNir6GhP3adz8W9SYnu2MZHtyETzK1apEQ8sX1dCUGBSQJ5G4uwhBV9mfpeOdU4pqTQbCSfl2np2VKhaKmASPler0BiXFiCrZ5qAJ5nOHXcAPrR5dh3C/TKJ9MRDtUPuxApHW4W9uvyEwJnu6Ycng= /v "C:\Users\Admin\AppData\Local\Temp\f483d85d62d36b5e63c51c4a4794d02893e8d93f6275e08afb934a0fde86fb17.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:4968

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n8741\s8741.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • C:\Users\Admin\AppData\Local\Temp\n8741\s8741.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • memory/4968-135-0x00007FF8B0860000-0x00007FF8B1296000-memory.dmp

    Filesize

    10.2MB

  • memory/4968-136-0x0000000000B7A000-0x0000000000B7F000-memory.dmp

    Filesize

    20KB