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Overview

overview

10

Static

static

fa6bf02d1d...61.exe

windows7-x64

10

fa6bf02d1d...61.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    164s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/10/2022, 11:40

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General

  • Target

    fa6bf02d1da363992191fa1003bb9e1c6d7e61de1d798a99652d759e11d2ac61.exe

  • Size

    320KB

  • MD5

    dfcd3efd5082839ae8b8ad90d9bcacd6

  • SHA1

    56678944830d3e771383b592c6b61e34b6d55487

  • SHA256

    fa6bf02d1da363992191fa1003bb9e1c6d7e61de1d798a99652d759e11d2ac61

  • SHA512

    dd5a901ae879f5c4ad2e33820c91610bbd052ba9c53b88ac834cd894f2286308b92b050e29e6238cbba3cca304f4f11d4b2ecb0487f3d47ad2d3dca561696b46

  • SSDEEP

    6144:wTw4o1IV3puaibGKFHi0mofhaH05kipz016580bHFMWu86JQPDHDdx/QtqR:+mgvmzFHi0mo5aH0qMzd5807FKPJQPDV

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 28 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 6 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 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 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\fa6bf02d1da363992191fa1003bb9e1c6d7e61de1d798a99652d759e11d2ac61.exe
    "C:\Users\Admin\AppData\Local\Temp\fa6bf02d1da363992191fa1003bb9e1c6d7e61de1d798a99652d759e11d2ac61.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:2572
    • C:\Users\Admin\AppData\Local\Temp\benly.exe
      "C:\Users\Admin\AppData\Local\Temp\benly.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
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:3320
    • C:\Users\Admin\AppData\Local\Temp\benly.exe
      "C:\Users\Admin\AppData\Local\Temp\benly.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:8
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4956

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      720KB

      MD5

      97425ec9907034f074a33184ca2d3ada

      SHA1

      42c61043112ae313cf20be5f97f8a80efe39ad8b

      SHA256

      d005ed1fa759d1c7392e5a5965684f00a846b732ff51a1cf39ef260049276684

      SHA512

      16a1ed6ea03a02202c94414036307ff23494756f745669cb982fd65b2c60572493fee8adbf4d4daf5a3e1632a94ed8e99fc2494c0514a7452b346fd5aebda6b6

      Download Submit

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

      720KB

      MD5

      97425ec9907034f074a33184ca2d3ada

      SHA1

      42c61043112ae313cf20be5f97f8a80efe39ad8b

      SHA256

      d005ed1fa759d1c7392e5a5965684f00a846b732ff51a1cf39ef260049276684

      SHA512

      16a1ed6ea03a02202c94414036307ff23494756f745669cb982fd65b2c60572493fee8adbf4d4daf5a3e1632a94ed8e99fc2494c0514a7452b346fd5aebda6b6

      Download Submit

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

      720KB

      MD5

      97425ec9907034f074a33184ca2d3ada

      SHA1

      42c61043112ae313cf20be5f97f8a80efe39ad8b

      SHA256

      d005ed1fa759d1c7392e5a5965684f00a846b732ff51a1cf39ef260049276684

      SHA512

      16a1ed6ea03a02202c94414036307ff23494756f745669cb982fd65b2c60572493fee8adbf4d4daf5a3e1632a94ed8e99fc2494c0514a7452b346fd5aebda6b6

      Download Submit