Analysis

  • max time kernel
    146s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-04-2024 09:46

General

  • Target

    6f7aad02384477c96833be0fef115412e2dc1c05d059f40c4ec13194e8308eeb.exe

  • Size

    218KB

  • MD5

    cf267f31af942869a51ff10d3cadb637

  • SHA1

    6c612523c12cd2a0e71deb7114427f6656cd58dc

  • SHA256

    6f7aad02384477c96833be0fef115412e2dc1c05d059f40c4ec13194e8308eeb

  • SHA512

    36dd1d8c70f042ceb111cd6456d70a1fd7e83764441748216421fed83e2ffeea2fcd842c700c09226a5bb07a61f1c3948afcc0b10a07dd5fa827575bc0b43fd4

  • SSDEEP

    3072:qUBTqPKGYOrEQAQB0fzahcaFnztzmrl9JrMw9ja2bwiOp:qKqPKGYOrEzQBXtnzsr54w9j/bwiO

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.26

Attributes
  • url_path

    /f993692117a3fda2.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6f7aad02384477c96833be0fef115412e2dc1c05d059f40c4ec13194e8308eeb.exe
    "C:\Users\Admin\AppData\Local\Temp\6f7aad02384477c96833be0fef115412e2dc1c05d059f40c4ec13194e8308eeb.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:928
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\EGDBFIIECB.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4476
      • C:\Users\Admin\AppData\Local\Temp\EGDBFIIECB.exe
        "C:\Users\Admin\AppData\Local\Temp\EGDBFIIECB.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:4100
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\EGDBFIIECB.exe
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2968
          • C:\Windows\SysWOW64\PING.EXE
            ping 2.2.2.2 -n 1 -w 3000
            5⤵
            • Runs ping.exe
            PID:5012
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 2632
      2⤵
      • Program crash
      PID:4156
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 928 -ip 928
    1⤵
      PID:3284

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Are.docx

      Filesize

      11KB

      MD5

      a33e5b189842c5867f46566bdbf7a095

      SHA1

      e1c06359f6a76da90d19e8fd95e79c832edb3196

      SHA256

      5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

      SHA512

      f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

    • C:\ProgramData\mozglue.dll

      Filesize

      593KB

      MD5

      c8fd9be83bc728cc04beffafc2907fe9

      SHA1

      95ab9f701e0024cedfbd312bcfe4e726744c4f2e

      SHA256

      ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

      SHA512

      fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

    • C:\ProgramData\nss3.dll

      Filesize

      2.0MB

      MD5

      1cc453cdf74f31e4d913ff9c10acdde2

      SHA1

      6e85eae544d6e965f15fa5c39700fa7202f3aafe

      SHA256

      ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

      SHA512

      dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

    • C:\Users\Admin\AppData\Local\Temp\EGDBFIIECB.exe

      Filesize

      106KB

      MD5

      fe380780b5c35bd6d54541791151c2be

      SHA1

      7fe3a583cf91474c733f85cebf3c857682e269e1

      SHA256

      b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

      SHA512

      ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

    • memory/928-85-0x0000000000400000-0x0000000002B60000-memory.dmp

      Filesize

      39.4MB

    • memory/928-49-0x0000000000400000-0x0000000002B60000-memory.dmp

      Filesize

      39.4MB

    • memory/928-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/928-3-0x0000000000400000-0x0000000002B60000-memory.dmp

      Filesize

      39.4MB

    • memory/928-1-0x0000000002D50000-0x0000000002E50000-memory.dmp

      Filesize

      1024KB

    • memory/928-2-0x0000000002CD0000-0x0000000002CF7000-memory.dmp

      Filesize

      156KB

    • memory/928-92-0x0000000002D50000-0x0000000002E50000-memory.dmp

      Filesize

      1024KB

    • memory/928-95-0x0000000002CD0000-0x0000000002CF7000-memory.dmp

      Filesize

      156KB

    • memory/928-100-0x0000000000400000-0x0000000002B60000-memory.dmp

      Filesize

      39.4MB

    • memory/4100-93-0x0000000000330000-0x0000000000350000-memory.dmp

      Filesize

      128KB

    • memory/4100-94-0x0000000072110000-0x00000000728C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4100-96-0x0000000004D30000-0x0000000004D40000-memory.dmp

      Filesize

      64KB

    • memory/4100-99-0x0000000072110000-0x00000000728C0000-memory.dmp

      Filesize

      7.7MB