Analysis

  • max time kernel
    120s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-09-2024 18:16

General

  • Target

    5b31c351ae35eff5d1db9feab78aa530N.exe

  • Size

    37KB

  • MD5

    5b31c351ae35eff5d1db9feab78aa530

  • SHA1

    c1056ae6320d74ff2f7c68e0163847ee61f64322

  • SHA256

    208981bbfc13638805c65b2b38f160866ef96f73089f10358172960742879f49

  • SHA512

    b906104290708dd4c22c718552492cd59efa7e6ef1d5e8692d7a013f05bed62dee360837f491b7ebac0c9e13716889afaf64a70989996a65e19330cbf16634ac

  • SSDEEP

    384:U/NqiUx54NLHdayszfhen9XsWiXFrAF+rMRTyN/0L+EcoinblneHQM3epzX0QNr8:ArZdJszfhex9i1rM+rMRa8NuyQmt

Malware Config

Signatures

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5b31c351ae35eff5d1db9feab78aa530N.exe
    "C:\Users\Admin\AppData\Local\Temp\5b31c351ae35eff5d1db9feab78aa530N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4436
    • C:\Users\Admin\AppData\Local\Temp\dllhost.exe
      "C:\Users\Admin\AppData\Local\Temp\dllhost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1876
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\dllhost.exe" "dllhost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:3356

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\dllhost.exe

    Filesize

    37KB

    MD5

    5b31c351ae35eff5d1db9feab78aa530

    SHA1

    c1056ae6320d74ff2f7c68e0163847ee61f64322

    SHA256

    208981bbfc13638805c65b2b38f160866ef96f73089f10358172960742879f49

    SHA512

    b906104290708dd4c22c718552492cd59efa7e6ef1d5e8692d7a013f05bed62dee360837f491b7ebac0c9e13716889afaf64a70989996a65e19330cbf16634ac

  • memory/1876-12-0x0000000074FF0000-0x00000000755A1000-memory.dmp

    Filesize

    5.7MB

  • memory/1876-14-0x0000000074FF0000-0x00000000755A1000-memory.dmp

    Filesize

    5.7MB

  • memory/1876-16-0x0000000074FF0000-0x00000000755A1000-memory.dmp

    Filesize

    5.7MB

  • memory/1876-17-0x0000000074FF0000-0x00000000755A1000-memory.dmp

    Filesize

    5.7MB

  • memory/1876-18-0x0000000074FF0000-0x00000000755A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4436-0-0x0000000074FF2000-0x0000000074FF3000-memory.dmp

    Filesize

    4KB

  • memory/4436-1-0x0000000074FF0000-0x00000000755A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4436-2-0x0000000074FF0000-0x00000000755A1000-memory.dmp

    Filesize

    5.7MB

  • memory/4436-13-0x0000000074FF0000-0x00000000755A1000-memory.dmp

    Filesize

    5.7MB