General

  • Target

    file.exe

  • Size

    638KB

  • Sample

    210118-27detvbb6s

  • MD5

    2c57749822cc2b1db2ebdd5531cc2ee1

  • SHA1

    ab941b0ea53e92346f379976abac27d737f9576c

  • SHA256

    f761860dedc916d3ba75130f503d2b6c68469fea0132c4a8a298410c2cbb6d2d

  • SHA512

    d8ac819d7588e74c93cdf68f8cd6fb99135f2167264f41f11b06b074ff0f5a554bbd214e7545a76acacbd7a1467872d74940db4a90a79305f7c6ef797ac7c2cd

Malware Config

Targets

    • Target

      file.exe

    • Size

      638KB

    • MD5

      2c57749822cc2b1db2ebdd5531cc2ee1

    • SHA1

      ab941b0ea53e92346f379976abac27d737f9576c

    • SHA256

      f761860dedc916d3ba75130f503d2b6c68469fea0132c4a8a298410c2cbb6d2d

    • SHA512

      d8ac819d7588e74c93cdf68f8cd6fb99135f2167264f41f11b06b074ff0f5a554bbd214e7545a76acacbd7a1467872d74940db4a90a79305f7c6ef797ac7c2cd

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Blocklisted process makes network request

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks BIOS information in registry

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

    • Deletes itself

    • Drops startup file

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

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

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks