Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:53

General

  • Target

    18df3cc6f2fc32277040460c85aaf927848e63abb3d005b43fcb8d0368a57214.exe

  • Size

    817KB

  • MD5

    d73b8c3a4405846fd0ba8c384a7113a1

  • SHA1

    0751fb4a0ac6671c71d7b48caf605e77b1424c3d

  • SHA256

    18df3cc6f2fc32277040460c85aaf927848e63abb3d005b43fcb8d0368a57214

  • SHA512

    239e0578ff629073b26a76bc46e427c1dce63f811d7baab50af73fcda91ed9b70191b056bdaf3fc2999485218a8e9bc7071956d2b5d634004e0cb8120321b727

  • SSDEEP

    24576:HRmJkcoQricOIQxiZY1iaBcien5VcrEjFk6d:sJZoQrbTFZY1iaBcBXc0P

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • NetWire RAT payload 2 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • AutoIT Executable 3 IoCs

    AutoIT scripts compiled to PE executables.

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

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

  • Creates scheduled task(s) 1 TTPs 12 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\18df3cc6f2fc32277040460c85aaf927848e63abb3d005b43fcb8d0368a57214.exe
    "C:\Users\Admin\AppData\Local\Temp\18df3cc6f2fc32277040460c85aaf927848e63abb3d005b43fcb8d0368a57214.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1612
    • C:\Windows\SysWOW64\svchost.exe
      "C:\Windows\System32\svchost.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in System32 directory
      PID:1956
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:984
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:1204
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:2044
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:1644
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:1604
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:1616
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:1980
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:1972
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:1504
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:560
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:524
    • C:\Windows\SysWOW64\schtasks.exe
      C:\Windows\SysWOW64\schtasks.exe /create /sc minute /mo 1 /tn "winmgr89.exe" /tr "C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe" /f
      2⤵
      • Creates scheduled task(s)
      PID:736
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {384E554D-C92D-4202-B0A2-60D2C39C1729} S-1-5-21-999675638-2867687379-27515722-1000:ORXGKKZC\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe
      C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe
      2⤵
      • Executes dropped EXE
      PID:860
    • C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe
      C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe
      2⤵
      • Executes dropped EXE
      PID:1908

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe
    Filesize

    1.6MB

    MD5

    35616d90e4da255743f5b3d0137de8d6

    SHA1

    4b2ff6ab9cd0c2758a354912821a87b3b058d0d7

    SHA256

    adacbac9c9e0ead716041f5943fbb7bb206c9ec8f45222794e8255b16ac160ca

    SHA512

    2f9bf19785e5fd7de8059521704c6e49c51e7dc17379c698e70702a94a5c1540c7e6b1abc15448f83af02c0c0960a36f16762e241d3754f083237ba0f7f39f6c

  • C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe
    Filesize

    1.6MB

    MD5

    35616d90e4da255743f5b3d0137de8d6

    SHA1

    4b2ff6ab9cd0c2758a354912821a87b3b058d0d7

    SHA256

    adacbac9c9e0ead716041f5943fbb7bb206c9ec8f45222794e8255b16ac160ca

    SHA512

    2f9bf19785e5fd7de8059521704c6e49c51e7dc17379c698e70702a94a5c1540c7e6b1abc15448f83af02c0c0960a36f16762e241d3754f083237ba0f7f39f6c

  • C:\Users\Admin\AppData\Roaming\Windows\winmgr89.exe
    Filesize

    1.6MB

    MD5

    35616d90e4da255743f5b3d0137de8d6

    SHA1

    4b2ff6ab9cd0c2758a354912821a87b3b058d0d7

    SHA256

    adacbac9c9e0ead716041f5943fbb7bb206c9ec8f45222794e8255b16ac160ca

    SHA512

    2f9bf19785e5fd7de8059521704c6e49c51e7dc17379c698e70702a94a5c1540c7e6b1abc15448f83af02c0c0960a36f16762e241d3754f083237ba0f7f39f6c

  • memory/524-85-0x0000000000000000-mapping.dmp
  • memory/560-84-0x0000000000000000-mapping.dmp
  • memory/736-86-0x0000000000000000-mapping.dmp
  • memory/860-71-0x0000000000000000-mapping.dmp
  • memory/984-67-0x0000000000000000-mapping.dmp
  • memory/1204-69-0x0000000000000000-mapping.dmp
  • memory/1504-83-0x0000000000000000-mapping.dmp
  • memory/1604-76-0x0000000000000000-mapping.dmp
  • memory/1612-54-0x0000000076681000-0x0000000076683000-memory.dmp
    Filesize

    8KB

  • memory/1616-77-0x0000000000000000-mapping.dmp
  • memory/1644-75-0x0000000000000000-mapping.dmp
  • memory/1908-80-0x0000000000000000-mapping.dmp
  • memory/1956-66-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1956-65-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1956-62-0x0000000000401F8F-mapping.dmp
  • memory/1956-61-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1956-68-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1956-60-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1956-58-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1956-56-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1956-55-0x0000000000400000-0x0000000000417000-memory.dmp
    Filesize

    92KB

  • memory/1972-79-0x0000000000000000-mapping.dmp
  • memory/1980-78-0x0000000000000000-mapping.dmp
  • memory/2044-74-0x0000000000000000-mapping.dmp