Analysis

  • max time kernel
    41s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 19:39

General

  • Target

    SecuriteInfo.com.Variant.Razy.666259.18937.228.exe

  • Size

    3.1MB

  • MD5

    058685ba83428d4295949d9fb64cbfd9

  • SHA1

    91e49d21e5abc910f857e9a3e20bb692e2c45e7b

  • SHA256

    2587f1479965f71d98a3f9ead9b9ae00fd71cb0efd00ce8843da9a8c443d0af9

  • SHA512

    96371bd66aef20f744bb4294b9bc5447e962688eae19e55523e0e7c5ea50b3e4229deea0cdf5eb0f09f2e58e2fb39168fd90bbefd642a96d254ddf49c15335ed

Malware Config

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

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

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

  • Reads user/profile data of web browsers 2 TTPs

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

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

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Razy.666259.18937.228.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Razy.666259.18937.228.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:1032

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1032-0-0x0000000000400000-0x0000000000B41000-memory.dmp
    Filesize

    7.3MB

  • memory/1872-1-0x000007FEF5F20000-0x000007FEF619A000-memory.dmp
    Filesize

    2.5MB