Resubmissions

03-07-2022 17:50

220703-wej6yaahcm 9

03-07-2022 17:42

220703-v9y3xacgb3 10

General

  • Target

    https://mega.nz/file/w5QHiRza#KWghkl8Z4g96VlObyOrPS3OBWtWQJHoTJye_ku_qvds

  • Sample

    220703-v9y3xacgb3

Malware Config

Targets

    • Target

      https://mega.nz/file/w5QHiRza#KWghkl8Z4g96VlObyOrPS3OBWtWQJHoTJye_ku_qvds

    • Modifies Windows Defender Real-time Protection settings

    • Modifies security service

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

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • 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.

    • Checks computer location settings

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

    • Drops startup file

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • 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

Persistence

Modify Existing Service

2
T1031

Defense Evasion

Modify Registry

2
T1112

Disabling Security Tools

1
T1089

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks