Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    06/05/2024, 12:33

General

  • Target

    73c00894b1b24243284cc6edff267ec3e478779e5874a749db702f8cd5e62deb.exe

  • Size

    416KB

  • MD5

    5f31a22e1c7db33143a9ede9d1d0cf86

  • SHA1

    fc6f43c2894edd0686d4b5c5ac3efab150f84975

  • SHA256

    73c00894b1b24243284cc6edff267ec3e478779e5874a749db702f8cd5e62deb

  • SHA512

    20c380a8f09d1ac8978d217fdf67af2482de1d9158038c65f4766b76b35f2039d3ee431f22e0fb971869ad5d7f6bd619341c07f64ca7e2a4afbcefdac3424929

  • SSDEEP

    6144:f/sljtGLGm0LFOvzmqUW8TcCovExfTp87gctz9Cc1jUyBnxeLDYtaZs:f/sljMLnmgSSecCmgpyz9C2/nO0tcs

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
  • 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 1 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 23 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\73c00894b1b24243284cc6edff267ec3e478779e5874a749db702f8cd5e62deb.exe
    "C:\Users\Admin\AppData\Local\Temp\73c00894b1b24243284cc6edff267ec3e478779e5874a749db702f8cd5e62deb.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Users\Admin\AppData\Local\Temp\u3to.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u3to.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:2320
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 2460
        3⤵
        • Program crash
        PID:3320
    • C:\Users\Admin\AppData\Local\Temp\u3to.1.exe
      "C:\Users\Admin\AppData\Local\Temp\u3to.1.exe"
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3832
      • 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:4568
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2320 -ip 2320
    1⤵
      PID:2828

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          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\u3to.0.exe

            Filesize

            275KB

            MD5

            9eb9464649a3e10e8aad3ce2a8e6b4f6

            SHA1

            4d8237f97a2349039f817f69ad1b0f7a317e7ade

            SHA256

            06ca216667daf350f1b6e97e7205b0dafe3e0e27a57ce368fe998504e766791f

            SHA512

            bb7741c17431b75a048778d00078f18f8dc0f79a2ee2386bf57eabfe8b1058015abfdf45ff667955363f5f5afd1b6d7a6754ca13b48e731d4ddc6d69cf1b2355

          • C:\Users\Admin\AppData\Local\Temp\u3to.1.exe

            Filesize

            4.6MB

            MD5

            397926927bca55be4a77839b1c44de6e

            SHA1

            e10f3434ef3021c399dbba047832f02b3c898dbd

            SHA256

            4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

            SHA512

            cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

          • memory/2320-13-0x0000000000400000-0x0000000001A0F000-memory.dmp

            Filesize

            22.1MB

          • memory/2320-14-0x0000000000400000-0x0000000001A0F000-memory.dmp

            Filesize

            22.1MB

          • memory/2320-15-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            Filesize

            972KB

          • memory/2320-115-0x0000000000400000-0x0000000001A0F000-memory.dmp

            Filesize

            22.1MB

          • memory/3832-143-0x0000000000400000-0x00000000008AD000-memory.dmp

            Filesize

            4.7MB

          • memory/3832-131-0x0000000000400000-0x00000000008AD000-memory.dmp

            Filesize

            4.7MB

          • memory/4568-160-0x00000207D4290000-0x00000207D4590000-memory.dmp

            Filesize

            3.0MB

          • memory/4568-153-0x00000207D4110000-0x00000207D418A000-memory.dmp

            Filesize

            488KB

          • memory/4568-173-0x00000207D8DB0000-0x00000207D8DCE000-memory.dmp

            Filesize

            120KB

          • memory/4568-172-0x00000207D8D80000-0x00000207D8DA2000-memory.dmp

            Filesize

            136KB

          • memory/4568-171-0x00000207D8CE0000-0x00000207D8CEC000-memory.dmp

            Filesize

            48KB

          • memory/4568-170-0x00000207D8D30000-0x00000207D8D80000-memory.dmp

            Filesize

            320KB

          • memory/4568-144-0x00000207B5CB0000-0x00000207B95A8000-memory.dmp

            Filesize

            57.0MB

          • memory/4568-145-0x00000207D3E00000-0x00000207D3F10000-memory.dmp

            Filesize

            1.1MB

          • memory/4568-147-0x00000207B9AA0000-0x00000207B9AAC000-memory.dmp

            Filesize

            48KB

          • memory/4568-146-0x00000207B9A10000-0x00000207B9A20000-memory.dmp

            Filesize

            64KB

          • memory/4568-148-0x00000207B9A30000-0x00000207B9A44000-memory.dmp

            Filesize

            80KB

          • memory/4568-149-0x00000207BB340000-0x00000207BB364000-memory.dmp

            Filesize

            144KB

          • memory/4568-150-0x00000207BB370000-0x00000207BB37A000-memory.dmp

            Filesize

            40KB

          • memory/4568-151-0x00000207D4060000-0x00000207D4112000-memory.dmp

            Filesize

            712KB

          • memory/4568-152-0x00000207BB390000-0x00000207BB3BA000-memory.dmp

            Filesize

            168KB

          • memory/4568-167-0x00000207D9480000-0x00000207D99A8000-memory.dmp

            Filesize

            5.2MB

          • memory/4568-154-0x00000207BB3C0000-0x00000207BB422000-memory.dmp

            Filesize

            392KB

          • memory/4568-155-0x00000207D4210000-0x00000207D4286000-memory.dmp

            Filesize

            472KB

          • memory/4568-156-0x00000207B9A80000-0x00000207B9A8A000-memory.dmp

            Filesize

            40KB

          • memory/4568-165-0x00000207D8F40000-0x00000207D8F4A000-memory.dmp

            Filesize

            40KB

          • memory/4568-162-0x00000207D7EF0000-0x00000207D7EF8000-memory.dmp

            Filesize

            32KB

          • memory/4568-163-0x00000207D85F0000-0x00000207D8628000-memory.dmp

            Filesize

            224KB

          • memory/4568-164-0x00000207D85C0000-0x00000207D85CE000-memory.dmp

            Filesize

            56KB

          • memory/4568-166-0x00000207D8CC0000-0x00000207D8CE2000-memory.dmp

            Filesize

            136KB

          • memory/4956-1-0x0000000001D50000-0x0000000001E50000-memory.dmp

            Filesize

            1024KB

          • memory/4956-41-0x0000000000400000-0x0000000001A32000-memory.dmp

            Filesize

            22.2MB

          • memory/4956-2-0x0000000001CB0000-0x0000000001D1C000-memory.dmp

            Filesize

            432KB

          • memory/4956-3-0x0000000000400000-0x000000000046F000-memory.dmp

            Filesize

            444KB

          • memory/4956-43-0x0000000000400000-0x000000000046F000-memory.dmp

            Filesize

            444KB

          • memory/4956-42-0x0000000001CB0000-0x0000000001D1C000-memory.dmp

            Filesize

            432KB