Resubmissions

02/12/2024, 16:47

241202-vamktsspat10

06/02/2023, 04:24

230206-e1d4dafd8x8

Analysis

  • max time kernel
    91s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/02/2023, 04:24

General

  • Target
    payload.bin.exe
  • Size 107KB
  • Sample230206-e1d4dafd8x
  • SHA256 f2cde4100fdbb5841b0f68e1c5dbba912b38478e64698c0238edb62415d1ad70
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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). Likely ransomware behaviour.

  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\payload.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\payload.bin.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3564
    • C:\Users\Admin\AppData\Local\Temp\xshOTgxL.exe
      "C:\Users\Admin\AppData\Local\Temp\xshOTgxL.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:4192
      • C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
        C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
        3⤵
        • Executes dropped EXE
        PID:3632

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        mozglue.dll

        • Path C:\Users\Admin\AppData\LocalLow\mozglue.dll
        • Size 612KB
        • SHA256 4191faf7e5eb105a0f4c5c6ed3e9e9c71014e8aa39bbee313bc92d1411e9e862
        • MD5 SHA1 SHA512 SSDEEP

        nss3.dll

        • Path C:\Users\Admin\AppData\LocalLow\nss3.dll
        • Size 1.9MB
        • SHA256 c65b7afb05ee2b2687e6280594019068c3d3829182dfe8604ce4adf2116cc46e
        • MD5 SHA1 SHA512 SSDEEP

        sqlite3.dll

        • Path C:\Users\Admin\AppData\LocalLow\sqlite3.dll
        • Size 1.0MB
        • SHA256 47b64311719000fa8c432165a0fdcdfed735d5b54977b052de915b1cbbbf9d68
        • MD5 SHA1 SHA512 SSDEEP

        xshOTgxL.exe

        • Path C:\Users\Admin\AppData\Local\Temp\xshOTgxL.exe
        • Size 4.0MB
        • SHA256 14529dca41abfea65abb51c84ec34ba0a951581586f98cef60213ae949a78320
        • MD5 SHA1 SHA512 SSDEEP

        xshOTgxL.exe

        • Path C:\Users\Admin\AppData\Local\Temp\xshOTgxL.exe
        • Size 4.0MB
        • SHA256 14529dca41abfea65abb51c84ec34ba0a951581586f98cef60213ae949a78320
        • MD5 SHA1 SHA512 SSDEEP

        ntlhost.exe

        • Path C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
        • Size 754.8MB
        • SHA256 a2a784bf2c4297e3eafbeda42bdc17918945ce86455be7c00c02ca1c89b866a4
        • MD5 SHA1 SHA512 SSDEEP

        ntlhost.exe

        • Path C:\Users\Admin\AppData\Roaming\NTSystem\ntlhost.exe
        • Size 742.9MB
        • SHA256 cd00962410e054f245fb8e9521b4bcedb919de2676edc9bfdadbacdb7cdf6425
        • MD5 SHA1 SHA512 SSDEEP