Analysis

  • max time kernel
    133s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-06-2024 09:33

General

  • Target

    99fdbe7edf259f5aa7ecba66787e7208cfae35585a12714d203913ef877a85a8.exe

  • Size

    2.2MB

  • MD5

    6edf5e87d5e0735cbb023bdc28039f44

  • SHA1

    955af916c5d2e8a4ee445bab025d42ef8c01076d

  • SHA256

    99fdbe7edf259f5aa7ecba66787e7208cfae35585a12714d203913ef877a85a8

  • SHA512

    12b7a3525fa6a9e1536fc1abce73e153c07684bf0f3149f7adf75ce35817628a3a2ff7f84996feedaf64976a34c8c28aa38effbc9f0fc045e05fa1e5a73441b3

  • SSDEEP

    49152:qpjNvr9ySAOmw4FHHO+SASagXkJr4MDkUwm:qpjNp7p4FHH8n5A

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\99fdbe7edf259f5aa7ecba66787e7208cfae35585a12714d203913ef877a85a8.exe
    "C:\Users\Admin\AppData\Local\Temp\99fdbe7edf259f5aa7ecba66787e7208cfae35585a12714d203913ef877a85a8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Users\Admin\AppData\Local\Temp\kat35D5.tmp
      C:\Users\Admin\AppData\Local\Temp\kat35D5.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:588

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat35D5.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/588-4-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/588-8-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/588-10-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/588-22-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/588-23-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/588-25-0x0000000022660000-0x00000000228BF000-memory.dmp

    Filesize

    2.4MB

  • memory/588-33-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/588-34-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-0-0x0000000002290000-0x0000000002291000-memory.dmp

    Filesize

    4KB

  • memory/1740-2-0x00000000029F0000-0x0000000002B00000-memory.dmp

    Filesize

    1.1MB

  • memory/1740-9-0x0000000000400000-0x0000000000635000-memory.dmp

    Filesize

    2.2MB