Overview

overview

10

Static

static

3

77bd239bad...61.exe

windows7-x64

3

77bd239bad...61.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    77bd239badeeadd23bb4b87349f1a086a4f4cd6739e7eac2a5713b0003334761.exe

  • Size

    355KB

  • Sample

    240523-b2763ahb72

  • MD5

    fa06e79c2af1d2a9f006fabfed4c0fa2

  • SHA1

    88024c59188a4d45abee7c062dea04c61ce9cdd6

  • SHA256

    77bd239badeeadd23bb4b87349f1a086a4f4cd6739e7eac2a5713b0003334761

  • SHA512

    f3c7405eb47d475d5f6d8dc4193180292ac2b45a6ebc3bc09f480da749d9bc94774eb342cd17ead5e70ed41baacba6d6edd8d99d99c90e48266a15e646ac95f9

  • SSDEEP

    6144:7Suze0A9T1ApHSIZUFfZXBzY5N5PgtuKxO7ME3sssfR+c294Y2q6up:7Tze0A95j385Ntgsf778V+c26up

Score
10/10
stealcvidardiscoveryspywarestealer

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      77bd239badeeadd23bb4b87349f1a086a4f4cd6739e7eac2a5713b0003334761.exe

    • Size

      355KB

    • MD5

      fa06e79c2af1d2a9f006fabfed4c0fa2

    • SHA1

      88024c59188a4d45abee7c062dea04c61ce9cdd6

    • SHA256

      77bd239badeeadd23bb4b87349f1a086a4f4cd6739e7eac2a5713b0003334761

    • SHA512

      f3c7405eb47d475d5f6d8dc4193180292ac2b45a6ebc3bc09f480da749d9bc94774eb342cd17ead5e70ed41baacba6d6edd8d99d99c90e48266a15e646ac95f9

    • SSDEEP

      6144:7Suze0A9T1ApHSIZUFfZXBzY5N5PgtuKxO7ME3sssfR+c294Y2q6up:7Tze0A95j385Ntgsf778V+c26up

    Score
    10/10
    stealcvidardiscoveryspywarestealer

    • Detect Vidar Stealer

      stealer

    • Stealc

      Stealc is an infostealer written in C++.

      stealerstealc

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

      stealervidar

    • Detect binaries embedding considerable number of MFA browser extension IDs.

    • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • Detects executables containing potential Windows Defender anti-emulation checks

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

      spywarestealer

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

      spywarestealer

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Accesses cryptocurrency files/wallets, possible credential harvesting

      spyware

    • Checks installed software on the system

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

      discovery

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

4
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

4
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks