Analysis

  • max time kernel
    77s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    30-09-2021 06:01

General

  • Target

    d8043d746dc108ac0966b502b68ddeaba575e841edfa269e8392a747c6d63015.exe

  • Size

    472KB

  • MD5

    39aa03c8bedfeb3ffec83ea5dff33e47

  • SHA1

    52fcffd16126dfe192f5956edccb5259eb8c5b91

  • SHA256

    d8043d746dc108ac0966b502b68ddeaba575e841edfa269e8392a747c6d63015

  • SHA512

    fa9de9d657fcb8ca63aaf3180c7cdcf6c4053b4bbab0a43365ad5fc0104d7f20aa0d49021aaad7b25eb8c3a07c8343ffd7f2f4f684b9aa875771fd1df32ffa7c

Malware Config

Extracted

Family

azorult

C2

http://www.11n.us/robin/index.php

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 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 1 IoCs

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

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d8043d746dc108ac0966b502b68ddeaba575e841edfa269e8392a747c6d63015.exe
    "C:\Users\Admin\AppData\Local\Temp\d8043d746dc108ac0966b502b68ddeaba575e841edfa269e8392a747c6d63015.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1540
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /SC HOURLY /MO 23 /TN "Udmattelsens7" /TR "reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce" /v "\""Udmattelsens7"\"" /f /t REG_SZ /d "\""C:\Users\Admin\AppData\Local\Temp\ovennvnt.exe\""
      2⤵
      • Creates scheduled task(s)
      PID:1520
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /run /tn "Udmattelsens7"
      2⤵
        PID:740
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {2FB0566A-D0BD-41D2-AD6F-474C3AFB7A30} S-1-5-21-3456797065-1076791440-4146276586-1000:JZCKHXIN\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1160
      • C:\Windows\system32\reg.EXE
        C:\Windows\system32\reg.EXE add HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce /v "Udmattelsens7" /f /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\ovennvnt.exe"
        2⤵
        • Adds Run key to start application
        • Modifies registry key
        PID:1812

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    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

    Loading Replay Monitor...

    Downloads

    • memory/740-59-0x0000000000000000-mapping.dmp
    • memory/1520-56-0x0000000000000000-mapping.dmp
    • memory/1540-55-0x0000000075A71000-0x0000000075A73000-memory.dmp
      Filesize

      8KB

    • memory/1540-57-0x0000000077B10000-0x0000000077CB9000-memory.dmp
      Filesize

      1.7MB

    • memory/1540-58-0x0000000077CF0000-0x0000000077E70000-memory.dmp
      Filesize

      1.5MB

    • memory/1540-60-0x0000000000400000-0x0000000000476000-memory.dmp
      Filesize

      472KB

    • memory/1812-61-0x0000000000000000-mapping.dmp