Analysis

  • max time kernel
    134s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-05-2024 10:15

General

  • Target

    41e787f5056461565bce0f5d57abe5ec66f24ba3a3a788e1835737afa3d0bf4a.exe

  • Size

    417KB

  • MD5

    e3b28616f9edb6e4c6bbf6b495856b41

  • SHA1

    b3ef76641c0cc8f082fc53f3c9851a1735b36161

  • SHA256

    41e787f5056461565bce0f5d57abe5ec66f24ba3a3a788e1835737afa3d0bf4a

  • SHA512

    00afb7809778b8f1e80935cc560f10d203a57f96404083e53d63d7899b367f50a0588ce9b4f830cc030c4afd7d48e5d9a99818372aa72f3e7acc335fb6bfcfeb

  • SSDEEP

    6144:d5pk6VtVbGU1sVOzp0f1eYVwIuI84glzNwiaTSLrqi3Vta5K:d5pjVLbX0ONzYarI0lzhaT+RVtMK

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.150

Attributes
  • url_path

    /c698e1bc8a2f5e6d.php

Signatures

  • Detect ZGRat V1 3 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • ZGRat

    ZGRat is remote access trojan 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 2 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 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 7 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41e787f5056461565bce0f5d57abe5ec66f24ba3a3a788e1835737afa3d0bf4a.exe
    "C:\Users\Admin\AppData\Local\Temp\41e787f5056461565bce0f5d57abe5ec66f24ba3a3a788e1835737afa3d0bf4a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5944
    • C:\Users\Admin\AppData\Local\Temp\u4l4.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u4l4.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1736
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 2524
        3⤵
        • Program crash
        PID:4488
    • C:\Users\Admin\AppData\Local\Temp\u4l4.1.exe
      "C:\Users\Admin\AppData\Local\Temp\u4l4.1.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:5532
      • C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
        "C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD1
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4576
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5944 -s 1028
      2⤵
      • Program crash
      PID:6004
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 5944 -ip 5944
    1⤵
      PID:1592
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1736 -ip 1736
      1⤵
        PID:5752

      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\u4l4.0.exe

        Filesize

        274KB

        MD5

        7faacbf66f86efccce100cd447ecca62

        SHA1

        90f565110b0bbd2f086acaf6ef57fb13f4f7d86f

        SHA256

        c5400417da46366c8a498ed88d81f968fd504a2a704022dea1a7bdfc0cdc0677

        SHA512

        16c9d4c07ff3dbf0850dafdaa67381086b6ba40644bc153094d58ec641379f126bc1877832d4ab0efadd3f723dd6a89a5c33c3239d5033e150880105075d470a

      • C:\Users\Admin\AppData\Local\Temp\u4l4.1.exe

        Filesize

        4.6MB

        MD5

        397926927bca55be4a77839b1c44de6e

        SHA1

        e10f3434ef3021c399dbba047832f02b3c898dbd

        SHA256

        4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

        SHA512

        cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

      • memory/1736-167-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/1736-146-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/1736-16-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/1736-17-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/1736-28-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/1736-118-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/4576-145-0x0000029CEF1E0000-0x0000029CEF1F4000-memory.dmp

        Filesize

        80KB

      • memory/4576-151-0x0000029CF2750000-0x0000029CF27CA000-memory.dmp

        Filesize

        488KB

      • memory/4576-173-0x0000029CF7C10000-0x0000029CF7C2E000-memory.dmp

        Filesize

        120KB

      • memory/4576-172-0x0000029CF7BE0000-0x0000029CF7C02000-memory.dmp

        Filesize

        136KB

      • memory/4576-136-0x0000029CEB480000-0x0000029CEED78000-memory.dmp

        Filesize

        57.0MB

      • memory/4576-170-0x0000029CF7B90000-0x0000029CF7BE0000-memory.dmp

        Filesize

        320KB

      • memory/4576-142-0x0000029CF24D0000-0x0000029CF25E0000-memory.dmp

        Filesize

        1.1MB

      • memory/4576-144-0x0000029CEF390000-0x0000029CEF39C000-memory.dmp

        Filesize

        48KB

      • memory/4576-143-0x0000029CEF1C0000-0x0000029CEF1D0000-memory.dmp

        Filesize

        64KB

      • memory/4576-171-0x0000029CF7B40000-0x0000029CF7B4C000-memory.dmp

        Filesize

        48KB

      • memory/4576-166-0x0000029CF8320000-0x0000029CF8848000-memory.dmp

        Filesize

        5.2MB

      • memory/4576-147-0x0000029CF22E0000-0x0000029CF2304000-memory.dmp

        Filesize

        144KB

      • memory/4576-148-0x0000029CEF1A0000-0x0000029CEF1AA000-memory.dmp

        Filesize

        40KB

      • memory/4576-150-0x0000029CF2300000-0x0000029CF23B2000-memory.dmp

        Filesize

        712KB

      • memory/4576-149-0x0000029CF2720000-0x0000029CF274A000-memory.dmp

        Filesize

        168KB

      • memory/4576-163-0x0000029CF7DC0000-0x0000029CF7DCA000-memory.dmp

        Filesize

        40KB

      • memory/4576-152-0x0000029CF27E0000-0x0000029CF2842000-memory.dmp

        Filesize

        392KB

      • memory/4576-153-0x0000029CF28C0000-0x0000029CF2936000-memory.dmp

        Filesize

        472KB

      • memory/4576-154-0x0000029CEF1B0000-0x0000029CEF1BA000-memory.dmp

        Filesize

        40KB

      • memory/4576-158-0x0000029CF2940000-0x0000029CF2C40000-memory.dmp

        Filesize

        3.0MB

      • memory/4576-160-0x0000029CF7320000-0x0000029CF7328000-memory.dmp

        Filesize

        32KB

      • memory/4576-161-0x0000029CF6C60000-0x0000029CF6C98000-memory.dmp

        Filesize

        224KB

      • memory/4576-162-0x0000029CF6C30000-0x0000029CF6C3E000-memory.dmp

        Filesize

        56KB

      • memory/4576-164-0x0000029CF7DD0000-0x0000029CF7DF2000-memory.dmp

        Filesize

        136KB

      • memory/5532-131-0x0000000000400000-0x00000000008AD000-memory.dmp

        Filesize

        4.7MB

      • memory/5532-119-0x0000000000400000-0x00000000008AD000-memory.dmp

        Filesize

        4.7MB

      • memory/5944-68-0x0000000000400000-0x0000000001A32000-memory.dmp

        Filesize

        22.2MB

      • memory/5944-2-0x0000000003670000-0x00000000036DC000-memory.dmp

        Filesize

        432KB

      • memory/5944-3-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB

      • memory/5944-1-0x0000000001BD0000-0x0000000001CD0000-memory.dmp

        Filesize

        1024KB

      • memory/5944-69-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB