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
    05-05-2024 08:42

General

  • Target

    cf0f85fe664eed3229baaccf2fac487ba0cc3dd3599d59b55f759e342a855459.exe

  • Size

    399KB

  • MD5

    ac69648ecafdb8995dfb2b39984a2b56

  • SHA1

    1a248b4428f700a85433aba4dd7f63b16e208784

  • SHA256

    cf0f85fe664eed3229baaccf2fac487ba0cc3dd3599d59b55f759e342a855459

  • SHA512

    7252e894ecb93781e0832338f4704b02b3a586d78d83f905bb778c53232a0ee7fc1c72a2ab3b2a241656ac363a2c9bb449bb33872445a742b9d6bd40bec8ca5a

  • SSDEEP

    6144:t5cRP0RY9yGmSTtwtdrh9tzQtegBxp/l5nDNSP0meoK6K:t5cRPL9vTivztzQtNxt5nDNS9VVK

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.150

Attributes
  • url_path

    /c698e1bc8a2f5e6d.php

Signatures

  • Buer

    Buer is a new modular loader first seen in August 2019.

  • 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 26 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\cf0f85fe664eed3229baaccf2fac487ba0cc3dd3599d59b55f759e342a855459.exe
    "C:\Users\Admin\AppData\Local\Temp\cf0f85fe664eed3229baaccf2fac487ba0cc3dd3599d59b55f759e342a855459.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4808
    • C:\Users\Admin\AppData\Local\Temp\u3pk.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u3pk.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1132
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1132 -s 2336
        3⤵
        • Program crash
        PID:2124
    • C:\Users\Admin\AppData\Local\Temp\u3pk.1.exe
      "C:\Users\Admin\AppData\Local\Temp\u3pk.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:4172
      • 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:376
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 1152
      2⤵
      • Program crash
      PID:1720
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4808 -ip 4808
    1⤵
      PID:5044
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1132 -ip 1132
      1⤵
        PID:3020

      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\u3pk.0.exe

        Filesize

        275KB

        MD5

        9cfa509be156607807515017f1ff019e

        SHA1

        d6ea3d4ec533b6ab9f255318aeb056d8a6394715

        SHA256

        169e20d81a2cd35fa8228c6daefb957024e4c387645e859c25aa38fc6f08ad3c

        SHA512

        217238b18f7cded22ed25dfa8613d8628b5b9a656b4e7a2868b79265ade77b4592264fdad02dee5796d953e1323ea8c7cda15703b47deace18672e34909e7334

      • C:\Users\Admin\AppData\Local\Temp\u3pk.1.exe

        Filesize

        4.6MB

        MD5

        397926927bca55be4a77839b1c44de6e

        SHA1

        e10f3434ef3021c399dbba047832f02b3c898dbd

        SHA256

        4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

        SHA512

        cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

      • memory/376-128-0x000001CFE18F0000-0x000001CFE1912000-memory.dmp

        Filesize

        136KB

      • memory/376-111-0x000001CFE1200000-0x000001CFE1276000-memory.dmp

        Filesize

        472KB

      • memory/376-164-0x000001CFE6480000-0x000001CFE649E000-memory.dmp

        Filesize

        120KB

      • memory/376-158-0x000001CFE6450000-0x000001CFE6472000-memory.dmp

        Filesize

        136KB

      • memory/376-133-0x000001CFE6180000-0x000001CFE61D0000-memory.dmp

        Filesize

        320KB

      • memory/376-134-0x000001CFE6130000-0x000001CFE613C000-memory.dmp

        Filesize

        48KB

      • memory/376-129-0x000001CFE6680000-0x000001CFE6BA8000-memory.dmp

        Filesize

        5.2MB

      • memory/376-64-0x000001CFC2C40000-0x000001CFC6538000-memory.dmp

        Filesize

        57.0MB

      • memory/376-127-0x000001CFE18E0000-0x000001CFE18EA000-memory.dmp

        Filesize

        40KB

      • memory/376-98-0x000001CFE0E20000-0x000001CFE0F30000-memory.dmp

        Filesize

        1.1MB

      • memory/376-99-0x000001CFC81C0000-0x000001CFC81D0000-memory.dmp

        Filesize

        64KB

      • memory/376-100-0x000001CFC81E0000-0x000001CFC81EC000-memory.dmp

        Filesize

        48KB

      • memory/376-101-0x000001CFC81D0000-0x000001CFC81E4000-memory.dmp

        Filesize

        80KB

      • memory/376-102-0x000001CFE0C30000-0x000001CFE0C54000-memory.dmp

        Filesize

        144KB

      • memory/376-106-0x000001CFC81A0000-0x000001CFC81AA000-memory.dmp

        Filesize

        40KB

      • memory/376-107-0x000001CFE0C60000-0x000001CFE0C8A000-memory.dmp

        Filesize

        168KB

      • memory/376-108-0x000001CFE1070000-0x000001CFE1122000-memory.dmp

        Filesize

        712KB

      • memory/376-110-0x000001CFE1120000-0x000001CFE1182000-memory.dmp

        Filesize

        392KB

      • memory/376-109-0x000001CFE0C90000-0x000001CFE0D0A000-memory.dmp

        Filesize

        488KB

      • memory/376-126-0x000001CFE1820000-0x000001CFE182E000-memory.dmp

        Filesize

        56KB

      • memory/376-115-0x000001CFC81B0000-0x000001CFC81BA000-memory.dmp

        Filesize

        40KB

      • memory/376-122-0x000001CFE1280000-0x000001CFE1580000-memory.dmp

        Filesize

        3.0MB

      • memory/376-124-0x000001CFE15D0000-0x000001CFE15D8000-memory.dmp

        Filesize

        32KB

      • memory/376-125-0x000001CFE1860000-0x000001CFE1898000-memory.dmp

        Filesize

        224KB

      • memory/1132-62-0x0000000000400000-0x0000000002B02000-memory.dmp

        Filesize

        39.0MB

      • memory/1132-165-0x0000000000400000-0x0000000002B02000-memory.dmp

        Filesize

        39.0MB

      • memory/1132-65-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/1132-130-0x0000000000400000-0x0000000002B02000-memory.dmp

        Filesize

        39.0MB

      • memory/4172-63-0x0000000000400000-0x00000000008AD000-memory.dmp

        Filesize

        4.7MB

      • memory/4172-50-0x0000000000400000-0x00000000008AD000-memory.dmp

        Filesize

        4.7MB

      • memory/4808-30-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB

      • memory/4808-5-0x0000000000400000-0x0000000002B22000-memory.dmp

        Filesize

        39.1MB

      • memory/4808-3-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB

      • memory/4808-28-0x0000000000400000-0x0000000002B22000-memory.dmp

        Filesize

        39.1MB

      • memory/4808-2-0x0000000002FD0000-0x000000000303C000-memory.dmp

        Filesize

        432KB

      • memory/4808-29-0x0000000002FD0000-0x000000000303C000-memory.dmp

        Filesize

        432KB

      • memory/4808-1-0x0000000002CD0000-0x0000000002DD0000-memory.dmp

        Filesize

        1024KB