Analysis

  • max time kernel
    125s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-06-2024 04:56

General

  • Target

    0391d14510ed5c1554f8c1037d86254026f25d24244c83e38bec43ce7ff7409f.exe

  • Size

    2.2MB

  • MD5

    ec5aeea2ba91df809dc3e413e6ff3273

  • SHA1

    8607deba288e824d6b2dbbf5eea79d6ab7f84ef8

  • SHA256

    0391d14510ed5c1554f8c1037d86254026f25d24244c83e38bec43ce7ff7409f

  • SHA512

    93f93b51a3a0bb17718deb33b86eda82bf743709e5b8f709f4dccec7bd3098c9391ad6e2dc1c025dc5023d099700176a593eaef91b8aafc3657cb4ae4d806aa1

  • SSDEEP

    49152:qpjNvr9ySAOmw4JHHO+SASagXkJr4MDkUwm:qpjNp7p4JHH8n5A

Malware Config

Extracted

Family

vidar

C2

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

  • Detect Vidar Stealer 8 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0391d14510ed5c1554f8c1037d86254026f25d24244c83e38bec43ce7ff7409f.exe
    "C:\Users\Admin\AppData\Local\Temp\0391d14510ed5c1554f8c1037d86254026f25d24244c83e38bec43ce7ff7409f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2116
    • C:\Users\Admin\AppData\Local\Temp\katFF5F.tmp
      C:\Users\Admin\AppData\Local\Temp\katFF5F.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:364
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4180,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=4080 /prefetch:8
    1⤵
      PID:4836

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\katFF5F.tmp

      Filesize

      861KB

      MD5

      66064dbdb70a5eb15ebf3bf65aba254b

      SHA1

      0284fd320f99f62aca800fb1251eff4c31ec4ed7

      SHA256

      6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

      SHA512

      b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

    • memory/364-4-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/364-10-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/364-8-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/364-22-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/364-23-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/364-25-0x0000000022810000-0x0000000022A6F000-memory.dmp

      Filesize

      2.4MB

    • memory/364-40-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/364-41-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/2116-0-0x00000000008F0000-0x00000000008F1000-memory.dmp

      Filesize

      4KB

    • memory/2116-1-0x0000000004030000-0x0000000004140000-memory.dmp

      Filesize

      1.1MB

    • memory/2116-9-0x0000000000400000-0x0000000000635000-memory.dmp

      Filesize

      2.2MB