Overview

overview

10

Static

static

b37300bd46...46.exe

windows7-x64

10

b37300bd46...46.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    163s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2022 22:18

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General

  • Target

    b37300bd4673374262ba3896838467c649976d657e4a047f40037d9a124a9e46.exe

  • Size

    320KB

  • MD5

    6d51303da26daa83864b98ec0dd5edc1

  • SHA1

    b4045caba0ec3295830652210fd0b80c06033b3b

  • SHA256

    b37300bd4673374262ba3896838467c649976d657e4a047f40037d9a124a9e46

  • SHA512

    40e2f920b9fb31b041b7a7c8513440626c028645ebd1dd7c21c286941932071b0d420a491a9936a46445fe2dc07644f297ff0b75027110610b6a96e92d3c48e8

  • SSDEEP

    6144:XTwEo1IV3puaibGKFHi0mofhaH05kipz016580bHFMdkhq86JQPDHDdx/QtqR:DCgvmzFHi0mo5aH0qMzd5807F7qPJQPx

Score
10/10
evasionpersistencetrojan

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
    persistence
  • UAC bypass 3 TTPs 12 IoCs
    evasiontrojan
  • Adds policy Run key to start application 2 TTPs 27 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    evasion
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 64 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 6 IoCs
    evasiontrojan
  • 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.

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • System policy modification 1 TTPs 39 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\b37300bd4673374262ba3896838467c649976d657e4a047f40037d9a124a9e46.exe
    "C:\Users\Admin\AppData\Local\Temp\b37300bd4673374262ba3896838467c649976d657e4a047f40037d9a124a9e46.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Adds policy Run key to start application
    • Disables RegEdit via registry modification
    • Checks computer location settings
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4912
    • C:\Users\Admin\AppData\Local\Temp\muaygs.exe
      "C:\Users\Admin\AppData\Local\Temp\muaygs.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:3896
    • C:\Users\Admin\AppData\Local\Temp\muaygs.exe
      "C:\Users\Admin\AppData\Local\Temp\muaygs.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
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • System policy modification
      PID:2064
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4180

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      704KB

      MD5

      2a72999eaffe6e607b5ebfb0f5238092

      SHA1

      92fc361f79ea418b3105c8a1e08521e8274440fc

      SHA256

      5fe4071bfae1fc99d9dd90af9c16a5cafbdb6d129fd3ea9864595f44f8dbb335

      SHA512

      e48666147d8dc70e12078f92e816917af6ab9ea0ce7e6eb170a17b495d3a6bf24ad3f6c9e0e5c6690883bf114dbba2418d7306e8debded31ccae73e8d442e65a

      Download Submit

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

      704KB

      MD5

      2a72999eaffe6e607b5ebfb0f5238092

      SHA1

      92fc361f79ea418b3105c8a1e08521e8274440fc

      SHA256

      5fe4071bfae1fc99d9dd90af9c16a5cafbdb6d129fd3ea9864595f44f8dbb335

      SHA512

      e48666147d8dc70e12078f92e816917af6ab9ea0ce7e6eb170a17b495d3a6bf24ad3f6c9e0e5c6690883bf114dbba2418d7306e8debded31ccae73e8d442e65a

      Download Submit

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

      704KB

      MD5

      2a72999eaffe6e607b5ebfb0f5238092

      SHA1

      92fc361f79ea418b3105c8a1e08521e8274440fc

      SHA256

      5fe4071bfae1fc99d9dd90af9c16a5cafbdb6d129fd3ea9864595f44f8dbb335

      SHA512

      e48666147d8dc70e12078f92e816917af6ab9ea0ce7e6eb170a17b495d3a6bf24ad3f6c9e0e5c6690883bf114dbba2418d7306e8debded31ccae73e8d442e65a

      Download Submit

    • memory/2064-135-0x0000000000000000-mapping.dmp

      Download

    • memory/3896-132-0x0000000000000000-mapping.dmp

      Download