Analysis

  • max time kernel
    117s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    23-09-2021 12:20

General

  • Target

    ed2ca82131cad5380e978d4c2d489e09f247463021b80cda9241bff82c10fb86.exe

  • Size

    577KB

  • MD5

    9fcf0f5b99f398b9e6b6afaa25c60917

  • SHA1

    720faa2bf8de76f8e92161b792f0a99eeeb63883

  • SHA256

    ed2ca82131cad5380e978d4c2d489e09f247463021b80cda9241bff82c10fb86

  • SHA512

    e9995cd9c5c3f694a9eb895de2840cdaecfd29681f2ca1616f9860fa2aabbbfdc1e678a3e54b69215c4ab6fdea8235a70773aa63d9e17d1c11647ae872bbb534

Malware Config

Extracted

Family

vidar

Version

41

Botnet

1008

C2

https://mas.to/@killern0

Attributes
  • profile_id

    1008

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 2 IoCs
  • Downloads MZ/PE file
  • 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.

  • 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ed2ca82131cad5380e978d4c2d489e09f247463021b80cda9241bff82c10fb86.exe
    "C:\Users\Admin\AppData\Local\Temp\ed2ca82131cad5380e978d4c2d489e09f247463021b80cda9241bff82c10fb86.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2212
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im ed2ca82131cad5380e978d4c2d489e09f247463021b80cda9241bff82c10fb86.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\ed2ca82131cad5380e978d4c2d489e09f247463021b80cda9241bff82c10fb86.exe" & del C:\ProgramData\*.dll & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3044
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im ed2ca82131cad5380e978d4c2d489e09f247463021b80cda9241bff82c10fb86.exe /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3088
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:2580

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2212-115-0x00000000021F0000-0x00000000022C4000-memory.dmp

    Filesize

    848KB

  • memory/2212-116-0x0000000000400000-0x0000000000517000-memory.dmp

    Filesize

    1.1MB