Overview

overview

10

Static

static

7954b7f018...34.exe

windows7-x64

10

7954b7f018...34.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    125s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/10/2022, 23:55

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General

  • Target

    7954b7f018f5d3ff852e1bd390d41477adacadb4d2d2a13ff45cf3b31ede5034.exe

  • Size

    320KB

  • MD5

    71ee19737698f120d243e30eb5ee65e0

  • SHA1

    cc81357948e6513fdb87c3fd174f5dc4d08316be

  • SHA256

    7954b7f018f5d3ff852e1bd390d41477adacadb4d2d2a13ff45cf3b31ede5034

  • SHA512

    44b365e026863225d04c9d9764b81683a7f219f1cf689efd11591c725af7e1c8e79b9cd015439493e4d080a4e2d9c9999c829fbbe6209ea11c2533b5a6cd771f

  • SSDEEP

    6144:sTw4o1IV3puaibGKFHi0mofhaH05kipz016580bHFMWu86JQPDHDdx/QtqR:SmgvmzFHi0mo5aH0qMzd5807FKPJQPDV

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 29 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 5 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 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\7954b7f018f5d3ff852e1bd390d41477adacadb4d2d2a13ff45cf3b31ede5034.exe
    "C:\Users\Admin\AppData\Local\Temp\7954b7f018f5d3ff852e1bd390d41477adacadb4d2d2a13ff45cf3b31ede5034.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:4244
    • C:\Users\Admin\AppData\Local\Temp\bakrp.exe
      "C:\Users\Admin\AppData\Local\Temp\bakrp.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:876
    • C:\Users\Admin\AppData\Local\Temp\bakrp.exe
      "C:\Users\Admin\AppData\Local\Temp\bakrp.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:4736
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4788

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      712KB

      MD5

      3b76864908f47308661298ee3eeefcf1

      SHA1

      08df58285a5daa6276b7ffd2ba8df022e33fa2af

      SHA256

      5dfcaa74500a9b534789ac2137622cd293d741e5f5ff9d1fb7e6c61953827fc2

      SHA512

      f1f76c69de4d36ef5170c7bfc3fbb39aeb930ab7c6dead740086c8462c27d2b402acaed66bc2544fee8a638dd1054beeaca6203f470d50b8c36f8b6e71622aca

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

      712KB

      MD5

      3b76864908f47308661298ee3eeefcf1

      SHA1

      08df58285a5daa6276b7ffd2ba8df022e33fa2af

      SHA256

      5dfcaa74500a9b534789ac2137622cd293d741e5f5ff9d1fb7e6c61953827fc2

      SHA512

      f1f76c69de4d36ef5170c7bfc3fbb39aeb930ab7c6dead740086c8462c27d2b402acaed66bc2544fee8a638dd1054beeaca6203f470d50b8c36f8b6e71622aca

      Download Submit

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

      712KB

      MD5

      3b76864908f47308661298ee3eeefcf1

      SHA1

      08df58285a5daa6276b7ffd2ba8df022e33fa2af

      SHA256

      5dfcaa74500a9b534789ac2137622cd293d741e5f5ff9d1fb7e6c61953827fc2

      SHA512

      f1f76c69de4d36ef5170c7bfc3fbb39aeb930ab7c6dead740086c8462c27d2b402acaed66bc2544fee8a638dd1054beeaca6203f470d50b8c36f8b6e71622aca

      Download Submit