Analysis

  • max time kernel
    70s
  • max time network
    110s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 17:11

General

  • Target

    abe8d333f59ea071a98d9c9a70005a746c472f9faf211d968e0143bd508efb65.exe

  • Size

    443KB

  • MD5

    5433b8670bab92b5054e45d610a9398c

  • SHA1

    4e6f141f43c8615dca31573abeaedab1291bde4a

  • SHA256

    abe8d333f59ea071a98d9c9a70005a746c472f9faf211d968e0143bd508efb65

  • SHA512

    7c8e46d22f15aa0e2180a2c150e8bb5b86ce97f074492c0db2dd4f1926b8524ce10d237c28d74c66d72cff3a8f21069a2b2bdfcbb144a960be40a127da77e14b

  • SSDEEP

    6144:PNqfRDSc5H1cxVApGhf165aWktv1C2ibXkR6GAS5o4BPtEYuCKdakVO:PNv+SnAaf165atG2ibw1vqOPbuCKdac

Malware Config

Signatures

  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • Nirsoft 9 IoCs
  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\abe8d333f59ea071a98d9c9a70005a746c472f9faf211d968e0143bd508efb65.exe
    "C:\Users\Admin\AppData\Local\Temp\abe8d333f59ea071a98d9c9a70005a746c472f9faf211d968e0143bd508efb65.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c copy /z "C:\Users\Admin\AppData\Local\Temp\abe8d333f59ea071a98d9c9a70005a746c472f9faf211d968e0143bd508efb65.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\abe8d333f59ea071a98d9c9a70005a746c472f9faf211d968e0143bd508efb65.exe"
      2⤵
      • Drops startup file
      PID:564
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Example" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Example.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:572
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Example" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Example.exe
        3⤵
        • Adds Run key to start application
        PID:340
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /stext "C:\Users\Admin\AppData\Local\Temp\logff.txt
      2⤵
        PID:1524
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /stext "C:\Users\Admin\AppData\Local\Temp\logmail.txt
        2⤵
        • Accesses Microsoft Outlook accounts
        PID:1896
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 1976
        2⤵
          PID:1792

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Scripting

      1
      T1064

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      Scripting

      1
      T1064

      Modify Registry

      1
      T1112

      Credential Access

      Credentials in Files

      1
      T1081

      Discovery

      System Information Discovery

      1
      T1082

      Collection

      Data from Local System

      1
      T1005

      Email Collection

      1
      T1114

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/340-59-0x0000000000000000-mapping.dmp
      • memory/564-57-0x0000000000000000-mapping.dmp
      • memory/572-58-0x0000000000000000-mapping.dmp
      • memory/1524-76-0x0000000000400000-0x0000000000418000-memory.dmp
        Filesize

        96KB

      • memory/1524-87-0x0000000000400000-0x0000000000418000-memory.dmp
        Filesize

        96KB

      • memory/1524-70-0x000000000040E758-mapping.dmp
      • memory/1524-61-0x0000000000400000-0x0000000000418000-memory.dmp
        Filesize

        96KB

      • memory/1524-62-0x0000000000400000-0x0000000000418000-memory.dmp
        Filesize

        96KB

      • memory/1524-64-0x0000000000400000-0x0000000000418000-memory.dmp
        Filesize

        96KB

      • memory/1524-66-0x0000000000400000-0x0000000000418000-memory.dmp
        Filesize

        96KB

      • memory/1524-67-0x0000000000400000-0x0000000000418000-memory.dmp
        Filesize

        96KB

      • memory/1524-69-0x0000000000400000-0x0000000000418000-memory.dmp
        Filesize

        96KB

      • memory/1792-90-0x0000000000000000-mapping.dmp
      • memory/1896-71-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1896-82-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1896-73-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1896-92-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1896-77-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1896-79-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1896-80-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1896-88-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1896-83-0x0000000000411654-mapping.dmp
      • memory/1896-86-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1996-56-0x0000000074B80000-0x000000007512B000-memory.dmp
        Filesize

        5.7MB

      • memory/1996-54-0x0000000075631000-0x0000000075633000-memory.dmp
        Filesize

        8KB

      • memory/1996-89-0x0000000000AC5000-0x0000000000AD6000-memory.dmp
        Filesize

        68KB

      • memory/1996-55-0x0000000074B80000-0x000000007512B000-memory.dmp
        Filesize

        5.7MB

      • memory/1996-60-0x0000000000AC5000-0x0000000000AD6000-memory.dmp
        Filesize

        68KB