Analysis

  • max time kernel
    55s
  • max time network
    181s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    29-05-2023 22:17

General

  • Target

    88182016daa697b08bb26ef40195a3c9271f42479cfa4be5e0824386de459e27.exe

  • Size

    438KB

  • MD5

    02401d92e69bf0f576742ea490d9ac2f

  • SHA1

    04887088ded63df74235c9bb5970f7c08ffbf017

  • SHA256

    88182016daa697b08bb26ef40195a3c9271f42479cfa4be5e0824386de459e27

  • SHA512

    2f4cf3c2e98c748316498e56b6e3761f4ff426a92218141e79e53290bb79612b2516d20fba485c5886b6b964a20ba21a8c62bd0883a1ae5f9bde5d22487c6ddf

  • SSDEEP

    6144:DZFMs5DjTYyaWm0BEd1ONWGfhHkUG/n13GJj+WUqKILIvo0:D5hjHc1oEGfhHHCIU7I

Malware Config

Extracted

Family

vidar

Version

4.1

Botnet

a247b760bbf343752090be1436805458

C2

https://t.me/task4manager

http://23.88.46.113:80

https://steamcommunity.com/profiles/76561199510444991

Attributes
  • profile_id_v2

    a247b760bbf343752090be1436805458

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.34

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • 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
  • 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).

  • 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\88182016daa697b08bb26ef40195a3c9271f42479cfa4be5e0824386de459e27.exe
    "C:\Users\Admin\AppData\Local\Temp\88182016daa697b08bb26ef40195a3c9271f42479cfa4be5e0824386de459e27.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2200
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\88182016daa697b08bb26ef40195a3c9271f42479cfa4be5e0824386de459e27.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4892
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:4792

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/2200-122-0x0000000002310000-0x0000000002366000-memory.dmp

    Filesize

    344KB

  • memory/2200-123-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/2200-163-0x0000000000400000-0x00000000006EB000-memory.dmp

    Filesize

    2.9MB