Overview

overview

10

Static

static

10

315d043b99...13.exe

windows7-x64

9

315d043b99...13.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    146s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/08/2024, 03:08

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General

  • Target
    315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe
  • Size 146KB
  • Sample240818-dm47zavepr
  • SHA256 315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
defense_evasiondiscoveryransomwarespywarestealer

Malware Config

Signatures

  • Renames multiple (651) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Drops desktop.ini file(s) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

    defense_evasion
  • Drops file in System32 directory 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

    discovery
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe
    "C:\Users\Admin\AppData\Local\Temp\315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe"
    1⤵
    • Drops desktop.ini file(s)
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4464
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:4648
    • C:\ProgramData\F628.tmp
      "C:\ProgramData\F628.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:4216
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\F628.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4668
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:516
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1972
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{3311EBCD-77E3-4189-81D2-9237ADF903AB}.xps" 133684241213160000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:3840

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          IIIIIIIIIII
          • Path C:\$Recycle.Bin\S-1-5-21-2392887640-1187051047-2909758433-1000\IIIIIIIIIII
          • Size 129B
          • SHA256 5ef7f97e22abbbd81493eb32a462f025ffb5dce83a00069684a720b67a00743e
          • MD5 SHA1 SHA512
          Submit Download

          F628.tmp
          • Path C:\ProgramData\F628.tmp
          • Size 14KB
          • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
          • Path C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
          • Size 146KB
          • SHA256 dc55d3395eaebd7b0a823639ee2d282bb8848f81aef40422b4bfb90e09413b71
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          Open Notebook.onetoc2
          • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
          • Size 4KB
          • SHA256 3a4fffc51e1a2cf1a2a5d61f593d20d634360a7c3d51df2d6a93fa551fe95694
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          raMFGAusF.README.txt
          • Path C:\raMFGAusF.README.txt
          • Size 597B
          • SHA256 5f8d2cdb81cac5d0b7df3bae0634042b305b4ac7ad06c728b21df0ea9628da25
          • MD5 SHA1 SHA512
          Submit Download

          DDDDDDDDDDD
          • Path F:\$RECYCLE.BIN\S-1-5-21-2392887640-1187051047-2909758433-1000\DDDDDDDDDDD
          • Size 129B
          • SHA256 90f6599a35a2a269c52c63b82cc1d68d59fa753587a04bf4c58729d8c40ffb35
          • MD5 SHA1 SHA512
          Submit Download

          memory/3840-2894-0x00007FFC21D50000-0x00007FFC21D60000-memory.dmp
          Download

          memory/3840-2889-0x00007FFC21D50000-0x00007FFC21D60000-memory.dmp
          Download

          memory/3840-2893-0x00007FFC21D50000-0x00007FFC21D60000-memory.dmp
          Download

          memory/3840-2897-0x00007FFC21D50000-0x00007FFC21D60000-memory.dmp
          Download

          memory/3840-2892-0x00007FFC21D50000-0x00007FFC21D60000-memory.dmp
          Download

          memory/3840-2921-0x00007FFC1F7C0000-0x00007FFC1F7D0000-memory.dmp
          Download

          memory/3840-2922-0x00007FFC1F7C0000-0x00007FFC1F7D0000-memory.dmp
          Download

          memory/4464-2872-0x0000000002C80000-0x0000000002C90000-memory.dmp
          Download

          memory/4464-2871-0x0000000002C80000-0x0000000002C90000-memory.dmp
          Download

          memory/4464-2873-0x0000000002C80000-0x0000000002C90000-memory.dmp
          Download

          memory/4464-0-0x0000000002C80000-0x0000000002C90000-memory.dmp
          Download

          memory/4464-1-0x0000000002C80000-0x0000000002C90000-memory.dmp
          Download

          memory/4464-2-0x0000000002C80000-0x0000000002C90000-memory.dmp
          Download