Analysis

  • max time kernel
    147s
  • max time network
    124s
  • 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 10:15

General

  • Target

    45fc584264dc2fd7328a481b74252100874f0f095a96a66401d1d87885873477.exe

  • Size

    417KB

  • MD5

    f77bf69ad896c043041eb5c5f3387c15

  • SHA1

    6f59897978bbd515014503869d9072f164435197

  • SHA256

    45fc584264dc2fd7328a481b74252100874f0f095a96a66401d1d87885873477

  • SHA512

    c8dfa29f2a92025b761c8f030e4cd9ddba1e21422d4181e0da281d65702d26a91ffacb395fc0a22d00e6dca64e8af1ace6f1429e2e34e7d5528b87a56dba1907

  • SSDEEP

    6144:d5pk6VtVbGU1sVOzp0f1eYVwIuI84glzNwiaTSLrqi3Vta5M:d5pjVLbX0ONzYarI0lzhaT+RVtMM

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\45fc584264dc2fd7328a481b74252100874f0f095a96a66401d1d87885873477.exe
    "C:\Users\Admin\AppData\Local\Temp\45fc584264dc2fd7328a481b74252100874f0f095a96a66401d1d87885873477.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4444
    • C:\Users\Admin\AppData\Local\Temp\u3fg.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u3fg.0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:740
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 740 -s 2300
        3⤵
        • Program crash
        PID:672
    • C:\Users\Admin\AppData\Local\Temp\u3fg.1.exe
      "C:\Users\Admin\AppData\Local\Temp\u3fg.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:1828
      • 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:3028
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 1032
      2⤵
      • Program crash
      PID:5052
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4444 -ip 4444
    1⤵
      PID:3288
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 740 -ip 740
      1⤵
        PID:4780

      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\iolo\dm\ioloDMLog.txt

        Filesize

        3KB

        MD5

        bd5e66391d734b5c156a8cbce5caad26

        SHA1

        6dddc47ef5e0086498b04fd65a54c8b5096edc06

        SHA256

        6f01a3b8206a485b721d09dd82be35f116949314966d42e8ebade60aa1b04e64

        SHA512

        43e5f160db686ef1da99bb80ea5303671514bca5c58d73840e5a89e352e1cbcca690aef4451eb8157b124ec89f83e9ea7b8ba91c2770cb211093d1788455d570

      • C:\Users\Admin\AppData\Local\Temp\u3fg.0.exe

        Filesize

        274KB

        MD5

        7faacbf66f86efccce100cd447ecca62

        SHA1

        90f565110b0bbd2f086acaf6ef57fb13f4f7d86f

        SHA256

        c5400417da46366c8a498ed88d81f968fd504a2a704022dea1a7bdfc0cdc0677

        SHA512

        16c9d4c07ff3dbf0850dafdaa67381086b6ba40644bc153094d58ec641379f126bc1877832d4ab0efadd3f723dd6a89a5c33c3239d5033e150880105075d470a

      • C:\Users\Admin\AppData\Local\Temp\u3fg.1.exe

        Filesize

        4.6MB

        MD5

        397926927bca55be4a77839b1c44de6e

        SHA1

        e10f3434ef3021c399dbba047832f02b3c898dbd

        SHA256

        4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

        SHA512

        cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

      • memory/740-181-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/740-16-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/740-180-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/740-17-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/740-40-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/740-96-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/740-18-0x0000000000400000-0x0000000001A0F000-memory.dmp

        Filesize

        22.1MB

      • memory/1828-111-0x0000000000400000-0x00000000008AD000-memory.dmp

        Filesize

        4.7MB

      • memory/3028-141-0x000001F5F3060000-0x000001F5F30DA000-memory.dmp

        Filesize

        488KB

      • memory/3028-155-0x000001F5F8970000-0x000001F5F8E98000-memory.dmp

        Filesize

        5.2MB

      • memory/3028-128-0x000001F5EC980000-0x000001F5F0278000-memory.dmp

        Filesize

        57.0MB

      • memory/3028-133-0x000001F5F2E10000-0x000001F5F2F20000-memory.dmp

        Filesize

        1.1MB

      • memory/3028-135-0x000001F5F2030000-0x000001F5F203C000-memory.dmp

        Filesize

        48KB

      • memory/3028-134-0x000001F5F06D0000-0x000001F5F06E0000-memory.dmp

        Filesize

        64KB

      • memory/3028-136-0x000001F5F2010000-0x000001F5F2024000-memory.dmp

        Filesize

        80KB

      • memory/3028-137-0x000001F5F2A50000-0x000001F5F2A74000-memory.dmp

        Filesize

        144KB

      • memory/3028-138-0x000001F5F2040000-0x000001F5F204A000-memory.dmp

        Filesize

        40KB

      • memory/3028-139-0x000001F5F2A80000-0x000001F5F2AAA000-memory.dmp

        Filesize

        168KB

      • memory/3028-150-0x000001F5F3190000-0x000001F5F3198000-memory.dmp

        Filesize

        32KB

      • memory/3028-140-0x000001F5F2B10000-0x000001F5F2BC2000-memory.dmp

        Filesize

        712KB

      • memory/3028-142-0x000001F5F30E0000-0x000001F5F3142000-memory.dmp

        Filesize

        392KB

      • memory/3028-143-0x000001F5F31C0000-0x000001F5F3236000-memory.dmp

        Filesize

        472KB

      • memory/3028-144-0x000001F5F2A70000-0x000001F5F2A7A000-memory.dmp

        Filesize

        40KB

      • memory/3028-148-0x000001F5F3240000-0x000001F5F3540000-memory.dmp

        Filesize

        3.0MB

      • memory/3028-152-0x000001F5F31B0000-0x000001F5F31BE000-memory.dmp

        Filesize

        56KB

      • memory/3028-206-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-204-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-153-0x000001F5F75B0000-0x000001F5F75BA000-memory.dmp

        Filesize

        40KB

      • memory/3028-154-0x000001F5F8420000-0x000001F5F8442000-memory.dmp

        Filesize

        136KB

      • memory/3028-151-0x000001F5F7570000-0x000001F5F75A8000-memory.dmp

        Filesize

        224KB

      • memory/3028-158-0x000001F5F8490000-0x000001F5F84E0000-memory.dmp

        Filesize

        320KB

      • memory/3028-159-0x000001F5F75C0000-0x000001F5F75CC000-memory.dmp

        Filesize

        48KB

      • memory/3028-160-0x000001F5F8760000-0x000001F5F8782000-memory.dmp

        Filesize

        136KB

      • memory/3028-161-0x000001F5F8470000-0x000001F5F848E000-memory.dmp

        Filesize

        120KB

      • memory/3028-202-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-200-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-198-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-183-0x000001F5F74D0000-0x000001F5F74F3000-memory.dmp

        Filesize

        140KB

      • memory/3028-182-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-184-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-186-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-188-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-190-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-192-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-194-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/3028-196-0x000001F5F2720000-0x000001F5F2917000-memory.dmp

        Filesize

        2.0MB

      • memory/4444-2-0x0000000003690000-0x00000000036FC000-memory.dmp

        Filesize

        432KB

      • memory/4444-34-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB

      • memory/4444-3-0x0000000000400000-0x000000000046F000-memory.dmp

        Filesize

        444KB

      • memory/4444-1-0x0000000001BF0000-0x0000000001CF0000-memory.dmp

        Filesize

        1024KB

      • memory/4444-33-0x0000000000400000-0x0000000001A32000-memory.dmp

        Filesize

        22.2MB