Analysis

  • max time kernel
    142s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    29-04-2022 15:24

General

  • Target

    4.exe

  • Size

    335.3MB

  • MD5

    e9a3562f3851dd2dba27f90b5b2d15c0

  • SHA1

    98be930c6674cc31c9cf7efb656f7fadb320a273

  • SHA256

    e600b8ef36477ed37d924b1ba8deaadeab3275392ba0accd6329a11542adbaad

  • SHA512

    0cca077c8d12d7122b89dc1e6c60e13730e387fb194e6df6d64ae1ec9eb680d98251951d8a06d59c356d6c643fe9589be7ed22187306c47a15af8d5bf1e80740

Malware Config

Extracted

Family

vidar

Version

51.9

Botnet

1281

C2

https://koyu.space/@ronxik123

Attributes
  • profile_id

    1281

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

    suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Vidar Stealer 6 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Loads dropped DLL 2 IoCs
  • 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
  • Accesses cryptocurrency files/wallets, 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
  • 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 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4.exe
    "C:\Users\Admin\AppData\Local\Temp\4.exe"
    1⤵
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:3444

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

  • C:\ProgramData\mozglue.dll
    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • C:\ProgramData\nss3.dll
    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • memory/3444-140-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-141-0x0000000077BD0000-0x0000000077D73000-memory.dmp
    Filesize

    1.6MB

  • memory/3444-134-0x0000000001600000-0x0000000001641000-memory.dmp
    Filesize

    260KB

  • memory/3444-135-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-136-0x00000000773A0000-0x00000000775B5000-memory.dmp
    Filesize

    2.1MB

  • memory/3444-137-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-138-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-139-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-130-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-133-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-143-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-144-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-145-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-146-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-147-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-148-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-149-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-150-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB

  • memory/3444-132-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB

  • memory/3444-131-0x0000000000830000-0x0000000000F45000-memory.dmp
    Filesize

    7.1MB