Analysis

  • max time kernel
    142s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • submitted
    08/09/2022, 12:37

General

  • Target
    f20d8f923ba4065f004bbb79086a8637.exe
  • Size 608KB
  • Sample220908-ptf99sefa2
  • SHA256 3b275eb3041764efa0c25789652714f73013eba1cca9636d1dd201db733e16c1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

Version
  • 54.2

Botnet
  • 1438

C2
  • https://t.me/tigogames

  • https://ioc.exchange/@tiagoa26

Attributes
  • profile_id

    1438

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 2 IoCs
  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • 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
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f20d8f923ba4065f004bbb79086a8637.exe
    "C:\Users\Admin\AppData\Local\Temp\f20d8f923ba4065f004bbb79086a8637.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5056
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2016
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c taskkill /im AppLaunch.exe /f & timeout /t 6 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe" & del C:\PrograData\*.dll & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1276
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im AppLaunch.exe /f
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1360
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          4⤵
          • Delays execution with timeout.exe
          PID:3180
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2016 -ip 2016
    1⤵
      PID:688

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          mozglue.dll

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

          nss3.dll

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

          memory/2016-133-0x0000000000400000-0x000000000045D000-memory.dmp

          memory/2016-139-0x0000000000400000-0x000000000045D000-memory.dmp

          memory/2016-140-0x0000000060900000-0x0000000060992000-memory.dmp