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Analysis

  • max time kernel
    141s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/05/2024, 22:34

General

  • Target

    3517d1ac47167fcc3afbdb4a21a9fcb9.exe

  • Size

    416KB

  • MD5

    3517d1ac47167fcc3afbdb4a21a9fcb9

  • SHA1

    5633d62cd097e5a15b12d98dff9939a418895edc

  • SHA256

    97d31daa731806026e50a454986e0b1df51ec32176d930e9bc1c16efffaec74e

  • SHA512

    295cae5dfdbefd058f27ce0a52cec6051898db7636940e4a00e06b74503f4d7f2953c0893d5ad960ca005581f9d170df6fba6fd112f4c1e1a626b4910f42c3d3

  • SSDEEP

    6144:xNDSLZK+bH6tSYLDidexnCihNJnrWXy1JFIHbP3ShohW90K:LSLZKK/dCCibRz4PiLaK

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 40 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\3517d1ac47167fcc3afbdb4a21a9fcb9.exe
    "C:\Users\Admin\AppData\Local\Temp\3517d1ac47167fcc3afbdb4a21a9fcb9.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4292
    • C:\Users\Admin\AppData\Local\Temp\u3b8.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u3b8.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:4956
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4956 -s 2312
        3⤵
        • Program crash
        PID:3424
    • C:\Users\Admin\AppData\Local\Temp\u3b8.1.exe
      "C:\Users\Admin\AppData\Local\Temp\u3b8.1.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:1136
      • 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:960
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4292 -s 1148
      2⤵
      • Program crash
      PID:1864
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4292 -ip 4292
    1⤵
      PID:2000
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4080 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:3536
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3476 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:3
        1⤵
          PID:2428
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4956 -ip 4956
          1⤵
            PID:1384

          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\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports

            Filesize

            2B

            MD5

            d751713988987e9331980363e24189ce

            SHA1

            97d170e1550eee4afc0af065b78cda302a97674c

            SHA256

            4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

            SHA512

            b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries

            Filesize

            40B

            MD5

            20d4b8fa017a12a108c87f540836e250

            SHA1

            1ac617fac131262b6d3ce1f52f5907e31d5f6f00

            SHA256

            6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d

            SHA512

            507b2b8a8a168ff8f2bdafa5d9d341c44501a5f17d9f63f3d43bd586bc9e8ae33221887869fa86f845b7d067cb7d2a7009efd71dda36e03a40a74fee04b86856

          • C:\Users\Admin\AppData\Local\Temp\u3b8.0.exe

            Filesize

            274KB

            MD5

            fae96a12ae35c2243801206ca089798d

            SHA1

            52b8769b202701900f03c386623232ee23fb90d3

            SHA256

            1b32e30cfeea17e7f29f8c907c42cafc3a18da4306007b5c5bc38cb6bb4f1750

            SHA512

            7a3d2284145b98b8db779e1a941f48125fd3fee00dc147fb6a2c0ecf0840b9c52973930871182e402726878de2bfb0dd7e4d64396e4280700511e2ac81aa7abe

          • C:\Users\Admin\AppData\Local\Temp\u3b8.1.exe

            Filesize

            4.6MB

            MD5

            397926927bca55be4a77839b1c44de6e

            SHA1

            e10f3434ef3021c399dbba047832f02b3c898dbd

            SHA256

            4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

            SHA512

            cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

          • memory/960-76-0x0000029F9A920000-0x0000029F9A982000-memory.dmp

            Filesize

            392KB

          • memory/960-83-0x0000029F9A980000-0x0000029F9AC80000-memory.dmp

            Filesize

            3.0MB

          • memory/960-179-0x0000029FFCF40000-0x0000029FFCF5E000-memory.dmp

            Filesize

            120KB

          • memory/960-178-0x0000029FFCF10000-0x0000029FFCF32000-memory.dmp

            Filesize

            136KB

          • memory/960-171-0x0000029F9AC80000-0x0000029F9AC8C000-memory.dmp

            Filesize

            48KB

          • memory/960-66-0x000002A000000000-0x000002A0038F8000-memory.dmp

            Filesize

            57.0MB

          • memory/960-67-0x0000029F9A5A0000-0x0000029F9A6B0000-memory.dmp

            Filesize

            1.1MB

          • memory/960-68-0x0000029F9A150000-0x0000029F9A160000-memory.dmp

            Filesize

            64KB

          • memory/960-69-0x0000029F9A170000-0x0000029F9A17C000-memory.dmp

            Filesize

            48KB

          • memory/960-70-0x0000029F9A160000-0x0000029F9A174000-memory.dmp

            Filesize

            80KB

          • memory/960-71-0x0000029F9A190000-0x0000029F9A1B4000-memory.dmp

            Filesize

            144KB

          • memory/960-72-0x0000029F9A210000-0x0000029F9A21A000-memory.dmp

            Filesize

            40KB

          • memory/960-73-0x0000029F9A230000-0x0000029F9A25A000-memory.dmp

            Filesize

            168KB

          • memory/960-74-0x0000029F9A7F0000-0x0000029F9A8A2000-memory.dmp

            Filesize

            712KB

          • memory/960-75-0x0000029F9A8A0000-0x0000029F9A91A000-memory.dmp

            Filesize

            488KB

          • memory/960-170-0x0000029FFCF60000-0x0000029FFCFB0000-memory.dmp

            Filesize

            320KB

          • memory/960-77-0x0000029FFCE90000-0x0000029FFCF06000-memory.dmp

            Filesize

            472KB

          • memory/960-167-0x0000029FA00E0000-0x0000029FA0608000-memory.dmp

            Filesize

            5.2MB

          • memory/960-79-0x0000029F818A0000-0x0000029F818AA000-memory.dmp

            Filesize

            40KB

          • memory/960-156-0x0000029F9ED30000-0x0000029F9ED52000-memory.dmp

            Filesize

            136KB

          • memory/960-155-0x0000029F9ED20000-0x0000029F9ED2A000-memory.dmp

            Filesize

            40KB

          • memory/960-135-0x0000029FFCE00000-0x0000029FFCE0E000-memory.dmp

            Filesize

            56KB

          • memory/960-133-0x0000029FFCBA0000-0x0000029FFCBA8000-memory.dmp

            Filesize

            32KB

          • memory/960-134-0x0000029FFCE40000-0x0000029FFCE78000-memory.dmp

            Filesize

            224KB

          • memory/1136-65-0x0000000000400000-0x00000000008AD000-memory.dmp

            Filesize

            4.7MB

          • memory/1136-37-0x0000000000400000-0x00000000008AD000-memory.dmp

            Filesize

            4.7MB

          • memory/1136-62-0x0000000000400000-0x00000000008AD000-memory.dmp

            Filesize

            4.7MB

          • memory/4292-12-0x0000000000400000-0x0000000002B25000-memory.dmp

            Filesize

            39.1MB

          • memory/4292-35-0x0000000002CA0000-0x0000000002D0C000-memory.dmp

            Filesize

            432KB

          • memory/4292-3-0x0000000000400000-0x000000000046F000-memory.dmp

            Filesize

            444KB

          • memory/4292-1-0x0000000002E10000-0x0000000002F10000-memory.dmp

            Filesize

            1024KB

          • memory/4292-36-0x0000000000400000-0x000000000046F000-memory.dmp

            Filesize

            444KB

          • memory/4292-2-0x0000000002CA0000-0x0000000002D0C000-memory.dmp

            Filesize

            432KB

          • memory/4292-33-0x0000000000400000-0x0000000002B25000-memory.dmp

            Filesize

            39.1MB

          • memory/4956-85-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            Filesize

            972KB

          • memory/4956-78-0x0000000000400000-0x0000000002B02000-memory.dmp

            Filesize

            39.0MB

          • memory/4956-172-0x0000000000400000-0x0000000002B02000-memory.dmp

            Filesize

            39.0MB

          • memory/4956-136-0x0000000000400000-0x0000000002B02000-memory.dmp

            Filesize

            39.0MB