Analysis

  • max time kernel
    2699s
  • max time network
    2694s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    11-05-2024 11:03

General

  • Target

    beren.exe

  • Size

    5.0MB

  • MD5

    b1ac2ea973651a70ea72597e13a10f0a

  • SHA1

    07e7cdedc54067a46b1d42cdf8a2c9050c3d3419

  • SHA256

    e2cb500c902da55ac07cbfbe30b8d1cef8781e55f0439ed601672636c3ab8c47

  • SHA512

    02b0dbc8a31ca440027a6c07d618a92bb520567ccd338c28dfcb86faa5b56c866564cf1a05b1754dcfeb252d12d76da57fd2de87804454f0ef1097431764c1f0

  • SSDEEP

    98304:9l68nO7ed9W+WzUU3a7G9kzPupfguX8WpWY/FwWCghYjuFRx20iZGZ1:9UdedpWzUmuPeghvY9wvonVsE

Malware Config

Signatures

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 22 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Creates new service(s) 2 TTPs
  • Stops running service(s) 4 TTPs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 27 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Launches sc.exe 4 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\beren.exe
    "C:\Users\Admin\AppData\Local\Temp\beren.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    PID:2952
    • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
      C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramData) -ExclusionExtension '.exe' -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3048
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c wusa /uninstall /kb:890830 /quiet /norestart
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2544
      • C:\Windows\system32\wusa.exe
        wusa /uninstall /kb:890830 /quiet /norestart
        3⤵
        • Drops file in Windows directory
        PID:2736
    • C:\Windows\system32\powercfg.exe
      C:\Windows\system32\powercfg.exe /x -hibernate-timeout-ac 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2640
    • C:\Windows\system32\powercfg.exe
      C:\Windows\system32\powercfg.exe /x -hibernate-timeout-dc 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2644
    • C:\Windows\system32\powercfg.exe
      C:\Windows\system32\powercfg.exe /x -standby-timeout-ac 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2752
    • C:\Windows\system32\powercfg.exe
      C:\Windows\system32\powercfg.exe /x -standby-timeout-dc 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2596
    • C:\Windows\system32\sc.exe
      C:\Windows\system32\sc.exe delete "QHRAJGDI"
      2⤵
      • Launches sc.exe
      PID:2912
    • C:\Windows\system32\sc.exe
      C:\Windows\system32\sc.exe create "QHRAJGDI" binpath= "C:\ProgramData\nalfdgwigwyg\lhhsgwktkatl.exe" start= "auto"
      2⤵
      • Launches sc.exe
      PID:2832
    • C:\Windows\system32\sc.exe
      C:\Windows\system32\sc.exe stop eventlog
      2⤵
      • Launches sc.exe
      PID:2724
    • C:\Windows\system32\sc.exe
      C:\Windows\system32\sc.exe start "QHRAJGDI"
      2⤵
      • Launches sc.exe
      PID:2436
  • C:\ProgramData\nalfdgwigwyg\lhhsgwktkatl.exe
    C:\ProgramData\nalfdgwigwyg\lhhsgwktkatl.exe
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2500
    • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
      C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramData) -ExclusionExtension '.exe' -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Drops file in System32 directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2608
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c wusa /uninstall /kb:890830 /quiet /norestart
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2740
      • C:\Windows\system32\wusa.exe
        wusa /uninstall /kb:890830 /quiet /norestart
        3⤵
        • Drops file in Windows directory
        PID:1248
    • C:\Windows\system32\powercfg.exe
      C:\Windows\system32\powercfg.exe /x -hibernate-timeout-ac 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2864
    • C:\Windows\system32\powercfg.exe
      C:\Windows\system32\powercfg.exe /x -hibernate-timeout-dc 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2860
    • C:\Windows\system32\powercfg.exe
      C:\Windows\system32\powercfg.exe /x -standby-timeout-ac 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2888
    • C:\Windows\system32\powercfg.exe
      C:\Windows\system32\powercfg.exe /x -standby-timeout-dc 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2992
    • C:\Windows\system32\conhost.exe
      C:\Windows\system32\conhost.exe
      2⤵
        PID:2996
      • C:\Windows\system32\conhost.exe
        conhost.exe
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1996

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Command and Scripting Interpreter

    1
    T1059

    PowerShell

    1
    T1059.001

    System Services

    2
    T1569

    Service Execution

    2
    T1569.002

    Persistence

    Create or Modify System Process

    2
    T1543

    Windows Service

    2
    T1543.003

    Privilege Escalation

    Create or Modify System Process

    2
    T1543

    Windows Service

    2
    T1543.003

    Defense Evasion

    Impair Defenses

    1
    T1562

    Impact

    Service Stop

    1
    T1489

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\nalfdgwigwyg\lhhsgwktkatl.exe
      Filesize

      5.0MB

      MD5

      b1ac2ea973651a70ea72597e13a10f0a

      SHA1

      07e7cdedc54067a46b1d42cdf8a2c9050c3d3419

      SHA256

      e2cb500c902da55ac07cbfbe30b8d1cef8781e55f0439ed601672636c3ab8c47

      SHA512

      02b0dbc8a31ca440027a6c07d618a92bb520567ccd338c28dfcb86faa5b56c866564cf1a05b1754dcfeb252d12d76da57fd2de87804454f0ef1097431764c1f0

    • memory/1996-44-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-46-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-57-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-36-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-56-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-54-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-50-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-52-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-40-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-43-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-38-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-51-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-28-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-49-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-30-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-34-0x00000000000D0000-0x00000000000F0000-memory.dmp
      Filesize

      128KB

    • memory/1996-33-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-35-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-37-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-39-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-47-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-48-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-41-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-32-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-31-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-27-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-29-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/1996-42-0x0000000140000000-0x0000000140848000-memory.dmp
      Filesize

      8.3MB

    • memory/2608-17-0x0000000000CF0000-0x0000000000CF8000-memory.dmp
      Filesize

      32KB

    • memory/2608-16-0x0000000019F20000-0x000000001A202000-memory.dmp
      Filesize

      2.9MB

    • memory/2996-22-0x0000000140000000-0x000000014000E000-memory.dmp
      Filesize

      56KB

    • memory/2996-20-0x0000000140000000-0x000000014000E000-memory.dmp
      Filesize

      56KB

    • memory/2996-18-0x0000000140000000-0x000000014000E000-memory.dmp
      Filesize

      56KB

    • memory/2996-19-0x0000000140000000-0x000000014000E000-memory.dmp
      Filesize

      56KB

    • memory/2996-21-0x0000000140000000-0x000000014000E000-memory.dmp
      Filesize

      56KB

    • memory/2996-24-0x0000000140000000-0x000000014000E000-memory.dmp
      Filesize

      56KB

    • memory/3048-8-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp
      Filesize

      9.6MB

    • memory/3048-4-0x000007FEF5FBE000-0x000007FEF5FBF000-memory.dmp
      Filesize

      4KB

    • memory/3048-6-0x0000000002720000-0x0000000002728000-memory.dmp
      Filesize

      32KB

    • memory/3048-5-0x000000001B620000-0x000000001B902000-memory.dmp
      Filesize

      2.9MB

    • memory/3048-10-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp
      Filesize

      9.6MB

    • memory/3048-11-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp
      Filesize

      9.6MB

    • memory/3048-9-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp
      Filesize

      9.6MB

    • memory/3048-7-0x000007FEF5D00000-0x000007FEF669D000-memory.dmp
      Filesize

      9.6MB