Overview

overview

10

Static

static

bc9d356f8d...da.exe

windows7_x64

10

bc9d356f8d...da.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    78s
  • max time network
    115s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 05:54

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General

  • Target

    bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe

  • Size

    501KB

  • MD5

    15da97ee7d404ff8d7c3b2b0cb8329ca

  • SHA1

    2e3a61cda59a5b9ef8b22932eb369d1d7836ef70

  • SHA256

    bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda

  • SHA512

    22cd806a68a6ebd135cbc3a0617e21b79747c9f3a3c8cf174c14c74e2cccf0f4bfa4f0ef414d3814c9f4b29e44b2875cee5b2f842ee77a6b72d641501095bd0c

Score
10/10
vidar517discoveryspywarestealersuricata

Malware Config

Extracted

Family

vidar

Version

29.7

Botnet

517

C2

http://shashlyndos.com/

Attributes
  • profile_id

    517

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

    stealervidar
  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    suricata
  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2

    suricata
  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2

    suricata
  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    suricata
  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

    suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

    suricata
  • Vidar Stealer 2 IoCs
    stealer
  • Deletes itself 1 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    spywarestealer
  • Reads user/profile data of local email clients 2 TTPs

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

    spywarestealer
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses 2FA software files, possible credential harvesting 2 TTPs
    spywarestealer
  • Checks installed software on the system 1 TTPs

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

    discovery
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe
    "C:\Users\Admin\AppData\Local\Temp\bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:676
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe /f & erase C:\Users\Admin\AppData\Local\Temp\bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe & exit
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1548
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im bc9d356f8d08396d620d249b8f34a664c9397467b1a6033013c788df734f8bda.exe /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1296

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

4
T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/676-54-0x0000000075EF1000-0x0000000075EF3000-memory.dmp
    Filesize

    8KB

    Download
  • memory/676-55-0x0000000003484000-0x00000000034DB000-memory.dmp
    Filesize

    348KB

    Download
  • memory/676-56-0x0000000000320000-0x00000000003AA000-memory.dmp
    Filesize

    552KB

    Download
  • memory/676-57-0x0000000000400000-0x000000000336D000-memory.dmp
    Filesize

    47.4MB

    Download
  • memory/1296-59-0x0000000000000000-mapping.dmp
    Download
  • memory/1548-58-0x0000000000000000-mapping.dmp
    Download