Analysis

  • max time kernel
    34s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-07-2023 00:43

General

  • Target

    Install.exe

  • Size

    656.9MB

  • MD5

    34b50b71e59e1c5fd2b491ccfb1ca125

  • SHA1

    bc4502b87f7921699e3a28bc45e108acc05d165d

  • SHA256

    90b01db1de89cb0fb3f7b892a6cb3cabdea7f8368bc009170443e10ce1b78c3c

  • SHA512

    80b4f5ba978b5f538e678a4ec8e81ebacf4aa3f1d9c0be96ec1cd7f94785bc95fa1a275ec92002849fafbdffdcf34016753763b697b7016b78a05a0bd00c2071

  • SSDEEP

    12582912:VQyQyQyQyQyQyQyQtQyQyQyQyQyQyQyQtQyQyQyQyQyQyQyQtQyQyQyQyQyQyQyb:VnnnnnnnOnnnnnnnOnnnnnnnOnnnnnnb

Malware Config

Extracted

Family

vidar

Version

4.6

Botnet

e907ec0c14f61e0147d368429250cda1

C2

https://steamcommunity.com/profiles/76561199523054520

https://t.me/game4serv

Attributes
  • profile_id_v2

    e907ec0c14f61e0147d368429250cda1

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:103.0) Gecko/20100101 Firefox/103.0

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Checks computer location settings 2 TTPs 1 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
  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Install.exe
    "C:\Users\Admin\AppData\Local\Temp\Install.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4692
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\Install.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1672
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:948

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • C:\ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/4692-133-0x0000000001AE0000-0x0000000001AE1000-memory.dmp

    Filesize

    4KB

  • memory/4692-134-0x0000000001AF0000-0x0000000001AF1000-memory.dmp

    Filesize

    4KB

  • memory/4692-135-0x0000000001B10000-0x0000000001B11000-memory.dmp

    Filesize

    4KB

  • memory/4692-136-0x0000000001B20000-0x0000000001B21000-memory.dmp

    Filesize

    4KB

  • memory/4692-137-0x0000000001B30000-0x0000000001B31000-memory.dmp

    Filesize

    4KB

  • memory/4692-138-0x0000000001B40000-0x0000000001B41000-memory.dmp

    Filesize

    4KB

  • memory/4692-139-0x0000000000E40000-0x00000000018C1000-memory.dmp

    Filesize

    10.5MB

  • memory/4692-151-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB