Analysis

  • max time kernel
    131s
  • max time network
    135s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    29-06-2024 02:51

General

  • Target

    Setup.exe

  • Size

    707.9MB

  • MD5

    b25431a1b7b821eef6f77698c18fabb7

  • SHA1

    8986dac902bc4827925550dab54d522c9d508d50

  • SHA256

    b81deb9f7a113389c170b54921cd8ec33216e7819b91b3a413e2ee79ad592434

  • SHA512

    474e6f1ad5eb02557f3046e6f23f176bca72248617a2b6c4b9378ac18b72e32175a8976e3e8d106c454d12b946e920aa1048e374b701c218f87df1d335d15f27

  • SSDEEP

    196608:P/tv60Dx802nynypt/G0o55XGyPkqPVGEt3eaie54JngocFYKAAPIVelZ3wTVCZU:tBx802nygh6WwZjeaF549X

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

Version

10.1

Botnet

bd7a7ef85507e39998176b88b253bdb9

C2

https://t.me/memve4erin

https://steamcommunity.com/profiles/76561199699680841

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

  • Detect Vidar Stealer 3 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 3 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

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

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Checks processor information in registry 2 TTPs 1 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:5064
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\SysWOW64\netsh.exe
      2⤵
      • Event Triggered Execution: Netsh Helper DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:5028
      • C:\Users\Admin\AppData\Local\Temp\coml.au3
        C:\Users\Admin\AppData\Local\Temp\coml.au3
        3⤵
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1016
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\AAKJEGCFBGDH" & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4668
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 10
            5⤵
            • Delays execution with timeout.exe
            PID:4540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\AAKJEGCFBGDH\VCRUNT~1.DLL

    Filesize

    78KB

    MD5

    a37ee36b536409056a86f50e67777dd7

    SHA1

    1cafa159292aa736fc595fc04e16325b27cd6750

    SHA256

    8934aaeb65b6e6d253dfe72dea5d65856bd871e989d5d3a2a35edfe867bb4825

    SHA512

    3a7c260646315cf8c01f44b2ec60974017496bd0d80dd055c7e43b707cadba2d63aab5e0efd435670aa77886ed86368390d42c4017fc433c3c4b9d1c47d0f356

  • C:\ProgramData\AAKJEGCFBGDH\msvcp140.dll

    Filesize

    439KB

    MD5

    5ff1fca37c466d6723ec67be93b51442

    SHA1

    34cc4e158092083b13d67d6d2bc9e57b798a303b

    SHA256

    5136a49a682ac8d7f1ce71b211de8688fce42ed57210af087a8e2dbc8a934062

    SHA512

    4802ef62630c521d83a1d333969593fb00c9b38f82b4d07f70fbd21f495fea9b3f67676064573d2c71c42bc6f701992989742213501b16087bb6110e337c7546

  • C:\ProgramData\AAKJEGCFBGDH\softokn3.dll

    Filesize

    251KB

    MD5

    4e52d739c324db8225bd9ab2695f262f

    SHA1

    71c3da43dc5a0d2a1941e874a6d015a071783889

    SHA256

    74ebbac956e519e16923abdc5ab8912098a4f64e38ddcb2eae23969f306afe5a

    SHA512

    2d4168a69082a9192b9248f7331bd806c260478ff817567df54f997d7c3c7d640776131355401e4bdb9744e246c36d658cb24b18de67d8f23f10066e5fe445f6

  • C:\Users\Admin\AppData\Local\Temp\2be006b

    Filesize

    6.8MB

    MD5

    79d6cd0a6fa70df57844f76a30cfe8cf

    SHA1

    d44d41bc8314a68800714af798080bbd6971c696

    SHA256

    3ee5c71955bd714b73ca800d3b5b840427e5d8bcd0e224fe202663c17d7413a7

    SHA512

    3209fc4ba40e585960ddbc5e6c01130a2a1ccee5202847ebca92de93d987a4e8159ab3fbbf50f3fb5067ad2071898cf521efafc6d12f03eb4562c169679c1908

  • C:\Users\Admin\AppData\Local\Temp\coml.au3

    Filesize

    872KB

    MD5

    c56b5f0201a3b3de53e561fe76912bfd

    SHA1

    2a4062e10a5de813f5688221dbeb3f3ff33eb417

    SHA256

    237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

    SHA512

    195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

  • C:\Users\Admin\AppData\Local\Temp\feb27f54

    Filesize

    6.8MB

    MD5

    957edcb00ce0b522499f6c799ea11053

    SHA1

    b1c91d93701d206820e45118e0df50d34790d27d

    SHA256

    e4456eea3e2fca53bc2a06fd247eba74bf668c39069d5c821d082ef7dfa03f5d

    SHA512

    167cb1c01f28bc40f85d0d8f895346d147a286811550142ebdf659cc4ba92f015d4def386d58adf4c48b1946ee31ddd8dcbef50ba09533889e9ad161c9867eb6

  • \ProgramData\AAKJEGCFBGDH\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\AAKJEGCFBGDH\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/1016-83-0x0000000000EF0000-0x000000000163B000-memory.dmp

    Filesize

    7.3MB

  • memory/1016-27-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/1016-74-0x0000000000EF0000-0x000000000163B000-memory.dmp

    Filesize

    7.3MB

  • memory/1016-70-0x0000000000EF0000-0x000000000163B000-memory.dmp

    Filesize

    7.3MB

  • memory/1016-21-0x00007FFA3E6A0000-0x00007FFA3E87B000-memory.dmp

    Filesize

    1.9MB

  • memory/5028-19-0x0000000073171000-0x000000007317F000-memory.dmp

    Filesize

    56KB

  • memory/5028-16-0x0000000073171000-0x000000007317F000-memory.dmp

    Filesize

    56KB

  • memory/5028-15-0x000000007317E000-0x0000000073180000-memory.dmp

    Filesize

    8KB

  • memory/5028-12-0x00007FFA3E6A0000-0x00007FFA3E87B000-memory.dmp

    Filesize

    1.9MB

  • memory/5064-0-0x00007FF66C310000-0x00007FF66CAEB000-memory.dmp

    Filesize

    7.9MB

  • memory/5064-9-0x00007FFA313B0000-0x00007FFA3151A000-memory.dmp

    Filesize

    1.4MB

  • memory/5064-8-0x00007FFA313B0000-0x00007FFA3151A000-memory.dmp

    Filesize

    1.4MB

  • memory/5064-7-0x00007FFA313C8000-0x00007FFA313C9000-memory.dmp

    Filesize

    4KB

  • memory/5064-6-0x00007FFA313B0000-0x00007FFA3151A000-memory.dmp

    Filesize

    1.4MB