Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231025-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231025-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/11/2023, 18:32

General

  • Target
    11074822014705.js
  • Size 6.5MB
  • Sample231126-w6mfdaba5v
  • SHA256 15cacb4f952177a2bbe3834a8c2217aa6ef5b78a8cd8af42ada9ff5a992292fc
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • strela

C2
  • 193.109.85.77

Signatures

  • Strela

    An info stealer targeting mail credentials first seen in late 2022.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\11074822014705.js
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1816
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /k copy "C:\Users\Admin\AppData\Local\Temp\11074822014705.js" "C:\Users\Admin\AppData\Local\Temp\\smoggywhiteoddelectric.bat" && "C:\Users\Admin\AppData\Local\Temp\\smoggywhiteoddelectric.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1668
      • C:\Windows\system32\findstr.exe
        findstr /V amusescintillatingthunderingdeadpan ""C:\Users\Admin\AppData\Local\Temp\\smoggywhiteoddelectric.bat""
        3⤵
          PID:5088
        • C:\Windows\system32\certutil.exe
          certutil -f -decode trueterrificdebonairfireman harassbegabhorrentnotice.dll
          3⤵
            PID:4528
          • C:\Windows\system32\regsvr32.exe
            regsvr32 harassbegabhorrentnotice.dll
            3⤵
            • Loads dropped DLL
            PID:952

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            harassbegabhorrentnotice.dll

            • Path C:\Users\Admin\AppData\Local\Temp\harassbegabhorrentnotice.dll
            • Size 4.8MB
            • SHA256 3efc0fc3ce934509a40e83f2414bcc2708b5c111a1ddb2441f3704243fb4e2dc
            • MD5 SHA1 SHA512 SSDEEP

            harassbegabhorrentnotice.dll

            • Path C:\Users\Admin\AppData\Local\Temp\harassbegabhorrentnotice.dll
            • Size 4.8MB
            • SHA256 3efc0fc3ce934509a40e83f2414bcc2708b5c111a1ddb2441f3704243fb4e2dc
            • MD5 SHA1 SHA512 SSDEEP

            smoggywhiteoddelectric.bat

            • Path C:\Users\Admin\AppData\Local\Temp\smoggywhiteoddelectric.bat
            • Size 6.5MB
            • SHA256 15cacb4f952177a2bbe3834a8c2217aa6ef5b78a8cd8af42ada9ff5a992292fc
            • MD5 SHA1 SHA512 SSDEEP

            smoggywhiteoddelectric.bat

            • Path C:\Users\Admin\AppData\Local\Temp\smoggywhiteoddelectric.bat
            • Size 6.5MB
            • SHA256 15cacb4f952177a2bbe3834a8c2217aa6ef5b78a8cd8af42ada9ff5a992292fc
            • MD5 SHA1 SHA512 SSDEEP

            trueterrificdebonairfireman

            • Path C:\Users\Admin\AppData\Local\Temp\trueterrificdebonairfireman
            • Size 6.4MB
            • SHA256 2347fe92811a8952b8783b2419872500f08060a58bb2415429f802044233da0b
            • MD5 SHA1 SHA512 SSDEEP

            memory/952-3578-0x000000006D7C0000-0x000000006DC8E000-memory.dmp

            memory/952-3579-0x0000000005920000-0x0000000005941000-memory.dmp

            memory/952-3580-0x0000000005920000-0x0000000005941000-memory.dmp