Analysis

  • max time kernel
    185s
  • max time network
    191s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    03/07/2022, 08:41

General

  • Target
    8ea696780f3410219edc5bc6f01717ca.exe
  • Size 400KB
  • Sample220703-klez1seee2
  • SHA256 aea334344d5c829f85f217d6097388c9be1f1c02cc129cf61fe3f12cd0e57c43
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • vidar

Version
  • 53

Botnet
  • 1448

C2
  • https://t.me/ch_inagroup

  • https://mastodon.social/@olegf9844e

Attributes
  • profile_id

    1448

Extracted

Family
  • amadey

Version
  • 3.21

C2
  • 185.215.113.15/Lkb2dxj3/index.php

Signatures

  • Amadey

    Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Amadey CnC Check-In

    suricata: ET MALWARE Amadey CnC Check-In

  • suricata: ET MALWARE Vidar/Arkei/Megumin Stealer Keywords Retrieved

    suricata: ET MALWARE Vidar/Arkei/Megumin Stealer Keywords Retrieved

  • suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

    suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

  • Vidar Stealer 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • 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). Likely ransomware behaviour.

  • Program crash 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8ea696780f3410219edc5bc6f01717ca.exe
    "C:\Users\Admin\AppData\Local\Temp\8ea696780f3410219edc5bc6f01717ca.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3132
    • C:\ProgramData\67693349153393864872.exe
      "C:\ProgramData\67693349153393864872.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:2732
      • C:\Users\Admin\AppData\Local\Temp\62eca45584\bguuwe.exe
        "C:\Users\Admin\AppData\Local\Temp\62eca45584\bguuwe.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:1160
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /f /v Startup /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\62eca45584\
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2360
          • C:\Windows\SysWOW64\reg.exe
            REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /f /v Startup /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\62eca45584\
            5⤵
              PID:448
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN bguuwe.exe /TR "C:\Users\Admin\AppData\Local\Temp\62eca45584\bguuwe.exe" /F
            4⤵
            • Creates scheduled task(s)
            PID:2056
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 876
          3⤵
          • Program crash
          PID:820
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c taskkill /im 8ea696780f3410219edc5bc6f01717ca.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\8ea696780f3410219edc5bc6f01717ca.exe" & del C:\ProgramData\*.dll & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3152
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im 8ea696780f3410219edc5bc6f01717ca.exe /f
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1496
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          3⤵
          • Delays execution with timeout.exe
          PID:4876
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3132 -s 1896
        2⤵
        • Program crash
        PID:1296
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2732 -ip 2732
      1⤵
        PID:5056

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            67693349153393864872.exe

            • Path C:\ProgramData\67693349153393864872.exe
            • Size 358KB
            • SHA256 9d3272736c7f635db7f8a4282ad8ffc93ecfc392a38ff269a2418a3299f65716
            • MD5 SHA1 SHA512 SSDEEP

            67693349153393864872.exe

            • Path C:\ProgramData\67693349153393864872.exe
            • Size 358KB
            • SHA256 9d3272736c7f635db7f8a4282ad8ffc93ecfc392a38ff269a2418a3299f65716
            • MD5 SHA1 SHA512 SSDEEP

            freebl3.dll

            • Path C:\ProgramData\freebl3.dll
            • Size 326KB
            • SHA256 a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
            • MD5 SHA1 SHA512 SSDEEP

            mozglue.dll

            • Path C:\ProgramData\mozglue.dll
            • Size 133KB
            • SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
            • MD5 SHA1 SHA512 SSDEEP

            mozglue.dll

            • Path C:\ProgramData\mozglue.dll
            • Size 133KB
            • SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
            • MD5 SHA1 SHA512 SSDEEP

            msvcp140.dll

            • Path C:\ProgramData\msvcp140.dll
            • Size 429KB
            • SHA256 334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4
            • MD5 SHA1 SHA512 SSDEEP

            nss3.dll

            • Path C:\ProgramData\nss3.dll
            • Size 1.2MB
            • SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
            • MD5 SHA1 SHA512 SSDEEP

            nss3.dll

            • Path C:\ProgramData\nss3.dll
            • Size 1.2MB
            • SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
            • MD5 SHA1 SHA512 SSDEEP

            softokn3.dll

            • Path C:\ProgramData\softokn3.dll
            • Size 141KB
            • SHA256 43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083
            • MD5 SHA1 SHA512 SSDEEP

            vcruntime140.dll

            • Path C:\ProgramData\vcruntime140.dll
            • Size 81KB
            • SHA256 c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d
            • MD5 SHA1 SHA512 SSDEEP

            bguuwe.exe

            • Path C:\Users\Admin\AppData\Local\Temp\62eca45584\bguuwe.exe
            • Size 358KB
            • SHA256 9d3272736c7f635db7f8a4282ad8ffc93ecfc392a38ff269a2418a3299f65716
            • MD5 SHA1 SHA512 SSDEEP

            bguuwe.exe

            • Path C:\Users\Admin\AppData\Local\Temp\62eca45584\bguuwe.exe
            • Size 358KB
            • SHA256 9d3272736c7f635db7f8a4282ad8ffc93ecfc392a38ff269a2418a3299f65716
            • MD5 SHA1 SHA512 SSDEEP

            memory/1160-178-0x0000000000400000-0x0000000000A8B000-memory.dmp

            memory/1160-177-0x0000000000B15000-0x0000000000B38000-memory.dmp

            memory/1160-169-0x0000000000B15000-0x0000000000B38000-memory.dmp

            memory/1160-170-0x0000000000400000-0x0000000000A8B000-memory.dmp

            memory/2732-162-0x0000000000400000-0x0000000000A8B000-memory.dmp

            memory/2732-164-0x0000000000400000-0x0000000000A8B000-memory.dmp

            memory/2732-161-0x0000000000CF0000-0x0000000000D32000-memory.dmp

            memory/2732-163-0x0000000000AE0000-0x0000000000BE0000-memory.dmp

            memory/2732-160-0x0000000000AE0000-0x0000000000BE0000-memory.dmp

            memory/3132-134-0x0000000000400000-0x0000000000A95000-memory.dmp

            memory/3132-135-0x0000000060900000-0x0000000060992000-memory.dmp

            memory/3132-130-0x0000000000D92000-0x0000000000DBF000-memory.dmp

            memory/3132-133-0x0000000000D92000-0x0000000000DBF000-memory.dmp

            memory/3132-132-0x0000000000400000-0x0000000000A95000-memory.dmp

            memory/3132-131-0x0000000000BF0000-0x0000000000C3D000-memory.dmp