Overview

overview

10

Static

static

10

f9600b1b06...38.exe

windows7-x64

10

f9600b1b06...38.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    423s
  • max time network
    424s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-07-2024 21:47

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General

  • Target

    f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe

  • Size

    1.3MB

  • MD5

    840eb9e50c131322605c5ea90ae1312f

  • SHA1

    fc9548f91123e05196dad6bcab11d29abd01500c

  • SHA256

    f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038

  • SHA512

    8e37c5890089bf1997e1c4c777a92f71eae9a86f11d1fb3cb3671dfa8c15c4365ed1f8811e6aae4d31f0fe73c1960b142f684a5274f086491f7d238a79313ffe

  • SSDEEP

    12288:75gafkW6xqP9iz8ZW29ohk3qHS/6gOHeA/MBU/7x5qDyNjC9Ha1DKs5y6blZRjHe:7Db/s/MSldTzfY/YRSv225PUXW8iF

Score
10/10
chaosdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (173) files with added filename extension

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

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Disables Task Manager via registry modification
    evasion
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 2 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
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe
    "C:\Users\Admin\AppData\Local\Temp\f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3652
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3196
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2352
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2164
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1724
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3700
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4784
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:404
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1264
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:3504
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:1916
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4000
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2004
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2240
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3076

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038.exe.log
      Filesize

      1KB

      MD5

      baf55b95da4a601229647f25dad12878

      SHA1

      abc16954ebfd213733c4493fc1910164d825cac8

      SHA256

      ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

      SHA512

      24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

      Download Submit

    • C:\Users\Admin\AppData\Local\read_it.txt
      Filesize

      470B

      MD5

      8d343bf17ef14ed4108d2db0f866100a

      SHA1

      c40e7c3d21224852317c9faa94fb9491798afe64

      SHA256

      ff6234d40f59879bfb8cbc051303e5c40b7faab945a8b867937146cf693032a3

      SHA512

      5ef8d0a32c7b00393f9ccec32ec5b65532c0cb15f7f03bd93920fe74d365a4805da55b26bc0c6ed56b96a47a1c186a673147cb67539a6e907e82416b331e9303

      Download Submit

    • C:\Users\Admin\AppData\Roaming\svchost.exe
      Filesize

      1.3MB

      MD5

      840eb9e50c131322605c5ea90ae1312f

      SHA1

      fc9548f91123e05196dad6bcab11d29abd01500c

      SHA256

      f9600b1b06588e3815a55eb81e35289f7b9a5749ae623550734c5f3d8c04e038

      SHA512

      8e37c5890089bf1997e1c4c777a92f71eae9a86f11d1fb3cb3671dfa8c15c4365ed1f8811e6aae4d31f0fe73c1960b142f684a5274f086491f7d238a79313ffe

      Download Submit

    • C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\Magnify.lnk
      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      Download Submit

    • memory/3196-16-0x00007FF8DE6E0000-0x00007FF8DF1A1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3196-1163-0x00007FF8DE6E0000-0x00007FF8DF1A1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3652-0-0x00007FF8DE6E3000-0x00007FF8DE6E5000-memory.dmp

      Filesize

      8KB

      Download

    • memory/3652-1-0x0000000000670000-0x00000000007C2000-memory.dmp

      Filesize

      1.3MB

      Download

    • memory/3652-2-0x00007FF8DE6E0000-0x00007FF8DF1A1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3652-15-0x00007FF8DE6E0000-0x00007FF8DF1A1000-memory.dmp

      Filesize

      10.8MB

      Download