Analysis

  • max time kernel
    142s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-06-2024 10:48

General

  • Target

    05f8a91d22dcd2a1e9acc913a8609b155868b78eb3692f0365fa54d08548fc02.exe

  • Size

    2.2MB

  • MD5

    b2f7cd55cc78132e31a4214b8a626058

  • SHA1

    3f381cb22c9bc77ea40a82b3af87ad5627d963b6

  • SHA256

    05f8a91d22dcd2a1e9acc913a8609b155868b78eb3692f0365fa54d08548fc02

  • SHA512

    183629fcd29fa21560af25c5e7a4f72e0b1e988166473f18c60f968cef3415254dc8770b3ffe5a139bd2929b4d476b49f06fe8270c54831d64fc8badff7ec64e

  • SSDEEP

    49152:qpjNvr9ySAOmw41HHO+SASagXkJr4MDkUwm:qpjNp7p41HH8n5A

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 9 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.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05f8a91d22dcd2a1e9acc913a8609b155868b78eb3692f0365fa54d08548fc02.exe
    "C:\Users\Admin\AppData\Local\Temp\05f8a91d22dcd2a1e9acc913a8609b155868b78eb3692f0365fa54d08548fc02.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:868
    • C:\Users\Admin\AppData\Local\Temp\katF220.tmp
      C:\Users\Admin\AppData\Local\Temp\katF220.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:5080
  • 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 --mojo-platform-channel-handle=1036 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:720

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\katF220.tmp

      Filesize

      861KB

      MD5

      66064dbdb70a5eb15ebf3bf65aba254b

      SHA1

      0284fd320f99f62aca800fb1251eff4c31ec4ed7

      SHA256

      6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

      SHA512

      b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

    • memory/868-8-0x0000000000400000-0x0000000000635000-memory.dmp

      Filesize

      2.2MB

    • memory/868-1-0x0000000004110000-0x0000000004220000-memory.dmp

      Filesize

      1.1MB

    • memory/868-0-0x00000000023B0000-0x00000000023B1000-memory.dmp

      Filesize

      4KB

    • memory/5080-10-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/5080-9-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/5080-4-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/5080-22-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/5080-23-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/5080-25-0x0000000024D90000-0x0000000024FEF000-memory.dmp

      Filesize

      2.4MB

    • memory/5080-40-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/5080-41-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/5080-42-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB