Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    20/09/2024, 14:06

General

  • Target
    file.exe
  • Size 1.1MB
  • Sample240920-red8ga1amm
  • SHA256 0213e39792ac0c5b66491f90c4b0fc4afdd84f40944922cab8a3bcdb1cf88cfc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

Version
  • 11

Botnet
  • 23278afe687d1f8637a185abd507382b

C2
  • https://steamcommunity.com/profiles/76561199780418869

  • https://t.me/ae5ed

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Signatures

  • Detect Vidar Stealer 11 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 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.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • 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 processes with tasklist 1 TTPs 2 IoCs
  • Drops file in Windows directory 6 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 13 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c move Ceo Ceo.bat & Ceo.bat
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2468
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1164
      • C:\Windows\SysWOW64\findstr.exe
        findstr /I "wrsa opssvc"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2712
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2744
      • C:\Windows\SysWOW64\findstr.exe
        findstr /I "avastui avgui bdservicehost nswscsvc sophoshealth"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2748
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c md 212475
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2684
      • C:\Windows\SysWOW64\findstr.exe
        findstr /V "FACEDRESULTSSESSIONSIMPLIFIED" Activation
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2660
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c copy /b ..\Sp + ..\Encyclopedia + ..\Klein + ..\Sequences + ..\Telephony + ..\Resolution + ..\Ecology + ..\Avoid j
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2820
      • C:\Users\Admin\AppData\Local\Temp\212475\Opponent.pif
        Opponent.pif j
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2876
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\212475\Opponent.pif" & rd /s /q "C:\ProgramData\BGCAAFHIEBKJ" & exit
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3048
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 10
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:1280
      • C:\Windows\SysWOW64\choice.exe
        choice /d y /t 5
        3⤵
        • System Location Discovery: System Language Discovery
        PID:596

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        Opponent.pif

        • Path C:\Users\Admin\AppData\Local\Temp\212475\Opponent.pif
        • Size 872KB
        • SHA256 d8b7c7178fbadbf169294e4f29dce582f89a5cf372e9da9215aa082330dc12fd
        • MD5 SHA1 SHA512 SSDEEP

        j

        • Path C:\Users\Admin\AppData\Local\Temp\212475\j
        • Size 552KB
        • SHA256 bade49216519e8d82c45664e46b6255feaf866a848ed3b1df5ada342ed195712
        • MD5 SHA1 SHA512 SSDEEP

        Activation

        • Path C:\Users\Admin\AppData\Local\Temp\Activation
        • Size 7KB
        • SHA256 e3f4fbcfa7a3d8e44e82a4b28a38724eb86b46f5599be2a0f1fb9880d0a1eb47
        • MD5 SHA1 SHA512 SSDEEP

        Avoid

        • Path C:\Users\Admin\AppData\Local\Temp\Avoid
        • Size 5KB
        • SHA256 02f710cb82f8d38f9e99e1be712d9c70552f6175f024e4a035c56a630b3ff066
        • MD5 SHA1 SHA512 SSDEEP

        Cab3507.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Cab3507.tmp
        • Size 70KB
        • SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
        • MD5 SHA1 SHA512 SSDEEP

        Ceo

        • Path C:\Users\Admin\AppData\Local\Temp\Ceo
        • Size 9KB
        • SHA256 695e778b876ea0312ad0014ea3ec8940139aa0033e4ec5e6e6da9c836fbc7086
        • MD5 SHA1 SHA512 SSDEEP

        Ecology

        • Path C:\Users\Admin\AppData\Local\Temp\Ecology
        • Size 62KB
        • SHA256 903f19bbcbc63f39726365060e05841b1f85746f78d7a0ae51392a824a97a7bb
        • MD5 SHA1 SHA512 SSDEEP

        Encyclopedia

        • Path C:\Users\Admin\AppData\Local\Temp\Encyclopedia
        • Size 99KB
        • SHA256 94715e887f132abf53cdc3d33022aa22063e1887f56a38a27e48aa21364d195a
        • MD5 SHA1 SHA512 SSDEEP

        Klein

        • Path C:\Users\Admin\AppData\Local\Temp\Klein
        • Size 96KB
        • SHA256 b92acf55b4f00ae18fb10765fd1bd0115529d0e492b1bf163f7a5ab2e0d367bc
        • MD5 SHA1 SHA512 SSDEEP

        Resolution

        • Path C:\Users\Admin\AppData\Local\Temp\Resolution
        • Size 63KB
        • SHA256 b0fd86c3a4b267d8706d7ae36b4a19eddb8fdb81fcb363c18174be45e64d9cc7
        • MD5 SHA1 SHA512 SSDEEP

        Rings

        • Path C:\Users\Admin\AppData\Local\Temp\Rings
        • Size 865KB
        • SHA256 e4a175bd91a15df2f47e2e65c2ad7ab8cd350425c8dafb072e479c1a4d6c4be8
        • MD5 SHA1 SHA512 SSDEEP

        Sequences

        • Path C:\Users\Admin\AppData\Local\Temp\Sequences
        • Size 52KB
        • SHA256 fdcfb94acca7a22919f6e2cb66e7290a336bdddb87525dc15f84e9ccfc048feb
        • MD5 SHA1 SHA512 SSDEEP

        Sp

        • Path C:\Users\Admin\AppData\Local\Temp\Sp
        • Size 79KB
        • SHA256 4a22f73997cba0fe3b1ecf506bef6f26ca0a84d964a5450396854502f6983fb5
        • MD5 SHA1 SHA512 SSDEEP

        Tar3539.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Tar3539.tmp
        • Size 181KB
        • SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
        • MD5 SHA1 SHA512 SSDEEP

        Telephony

        • Path C:\Users\Admin\AppData\Local\Temp\Telephony
        • Size 96KB
        • SHA256 3f15bffc2b8590d4e959cebd7c30ecc4fedcbb0907f0f7860b5bef19433aaf40
        • MD5 SHA1 SHA512 SSDEEP

        mozglue.dll

        • Path \ProgramData\mozglue.dll
        • Size 593KB
        • SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
        • MD5 SHA1 SHA512 SSDEEP

        nss3.dll

        • Path \ProgramData\nss3.dll
        • Size 2.0MB
        • SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
        • MD5 SHA1 SHA512 SSDEEP

        memory/2876-34-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-36-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-35-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-32-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-177-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-196-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-215-0x000000000DC10000-0x000000000DE6F000-memory.dmp

        memory/2876-225-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-244-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-33-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-375-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-31-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-394-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-455-0x0000000003AB0000-0x0000000003D25000-memory.dmp

        memory/2876-474-0x0000000003AB0000-0x0000000003D25000-memory.dmp