Analysis

  • max time kernel
    140s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-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
  • 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 30 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⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4360
    • C:\Users\Admin\AppData\Local\Temp\u3d4.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u3d4.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:3064
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3064 -s 1996
        3⤵
        • Program crash
        PID:1076
    • C:\Users\Admin\AppData\Local\Temp\u3d4.1.exe
      "C:\Users\Admin\AppData\Local\Temp\u3d4.1.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:4364
      • 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:3056
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4360 -s 1164
      2⤵
      • Program crash
      PID:2232
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4360 -ip 4360
    1⤵
      PID:2272
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3064 -ip 3064
      1⤵
        PID:4596

      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\u3d4.0.exe

        Filesize

        275KB

        MD5

        9eb9464649a3e10e8aad3ce2a8e6b4f6

        SHA1

        4d8237f97a2349039f817f69ad1b0f7a317e7ade

        SHA256

        06ca216667daf350f1b6e97e7205b0dafe3e0e27a57ce368fe998504e766791f

        SHA512

        bb7741c17431b75a048778d00078f18f8dc0f79a2ee2386bf57eabfe8b1058015abfdf45ff667955363f5f5afd1b6d7a6754ca13b48e731d4ddc6d69cf1b2355

      • C:\Users\Admin\AppData\Local\Temp\u3d4.1.exe

        Filesize

        4.6MB

        MD5

        397926927bca55be4a77839b1c44de6e

        SHA1

        e10f3434ef3021c399dbba047832f02b3c898dbd

        SHA256

        4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

        SHA512

        cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

      • memory/3056-157-0x0000026CA98A0000-0x0000026CA9BA0000-memory.dmp

        Filesize

        3.0MB

      • memory/3056-159-0x0000026CAE280000-0x0000026CAE288000-memory.dmp

        Filesize

        32KB

      • memory/3056-170-0x0000026CAEB90000-0x0000026CAEBAE000-memory.dmp

        Filesize

        120KB

      • memory/3056-169-0x0000026CAEB60000-0x0000026CAEB82000-memory.dmp

        Filesize

        136KB

      • memory/3056-167-0x0000026CAEB10000-0x0000026CAEB60000-memory.dmp

        Filesize

        320KB

      • memory/3056-168-0x0000026CAEAC0000-0x0000026CAEACC000-memory.dmp

        Filesize

        48KB

      • memory/3056-164-0x0000026CAF260000-0x0000026CAF788000-memory.dmp

        Filesize

        5.2MB

      • memory/3056-163-0x0000026CAEAA0000-0x0000026CAEAC2000-memory.dmp

        Filesize

        136KB

      • memory/3056-162-0x0000026CAED20000-0x0000026CAED2A000-memory.dmp

        Filesize

        40KB

      • memory/3056-161-0x0000026CADB90000-0x0000026CADB9E000-memory.dmp

        Filesize

        56KB

      • memory/3056-160-0x0000026CADBC0000-0x0000026CADBF8000-memory.dmp

        Filesize

        224KB

      • memory/3056-153-0x0000026C8F930000-0x0000026C8F93A000-memory.dmp

        Filesize

        40KB

      • memory/3056-141-0x0000026C8A3F0000-0x0000026C8DCE8000-memory.dmp

        Filesize

        57.0MB

      • memory/3056-142-0x0000026CA9440000-0x0000026CA9550000-memory.dmp

        Filesize

        1.1MB

      • memory/3056-144-0x0000026C8F990000-0x0000026C8F99C000-memory.dmp

        Filesize

        48KB

      • memory/3056-143-0x0000026C8F900000-0x0000026C8F910000-memory.dmp

        Filesize

        64KB

      • memory/3056-145-0x0000026C8F980000-0x0000026C8F994000-memory.dmp

        Filesize

        80KB

      • memory/3056-146-0x0000026C8FA30000-0x0000026C8FA54000-memory.dmp

        Filesize

        144KB

      • memory/3056-147-0x0000026C8F920000-0x0000026C8F92A000-memory.dmp

        Filesize

        40KB

      • memory/3056-149-0x0000026CA9690000-0x0000026CA9742000-memory.dmp

        Filesize

        712KB

      • memory/3056-148-0x0000026CA9280000-0x0000026CA92AA000-memory.dmp

        Filesize

        168KB

      • memory/3056-151-0x0000026CA9740000-0x0000026CA97A2000-memory.dmp

        Filesize

        392KB

      • memory/3056-150-0x0000026CA92B0000-0x0000026CA932A000-memory.dmp

        Filesize

        488KB

      • memory/3056-152-0x0000026CA9820000-0x0000026CA9896000-memory.dmp

        Filesize

        472KB

      • memory/3064-112-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/3064-15-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/3064-13-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/3064-14-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/3064-16-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/4360-1-0x0000000001A70000-0x0000000001B70000-memory.dmp

        Filesize

        1024KB

      • memory/4360-3-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB

      • memory/4360-2-0x0000000003680000-0x00000000036EC000-memory.dmp

        Filesize

        432KB

      • memory/4360-82-0x0000000000400000-0x0000000001A32000-memory.dmp

        Filesize

        22.2MB

      • memory/4360-83-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB

      • memory/4364-140-0x0000000000400000-0x00000000008AD000-memory.dmp

        Filesize

        4.7MB

      • memory/4364-137-0x0000000000400000-0x00000000008AD000-memory.dmp

        Filesize

        4.7MB