General

  • Target

    Taxinvoice1198691264·pdf.exe

  • Size

    558KB

  • Sample

    230208-jps6dahf68

  • MD5

    d64248de7641b1efd1137fcb3d5b5023

  • SHA1

    841e007277d085f43afecba308ad7e0edee81dcc

  • SHA256

    ef56f8c0615d059de3d0f669b651d38caf535155878ff4bc7d1b1a62abd45213

  • SHA512

    38bbbc75a903978492ed91aedc6141a935a38d9573ad55a7916e224e92d396259b988a2de3aaed90407140f213eac5e553ea18826005c97e19284286f0dff36b

  • SSDEEP

    12288:Iky+IuY0vH9+/dUj4fn7fJkB+N8v2ocCSivrlicgUKiW2Y:Q9uY6H4K4fSS8vcKGkY

Malware Config

Targets

    • Target

      Taxinvoice1198691264·pdf.exe

    • Size

      558KB

    • MD5

      d64248de7641b1efd1137fcb3d5b5023

    • SHA1

      841e007277d085f43afecba308ad7e0edee81dcc

    • SHA256

      ef56f8c0615d059de3d0f669b651d38caf535155878ff4bc7d1b1a62abd45213

    • SHA512

      38bbbc75a903978492ed91aedc6141a935a38d9573ad55a7916e224e92d396259b988a2de3aaed90407140f213eac5e553ea18826005c97e19284286f0dff36b

    • SSDEEP

      12288:Iky+IuY0vH9+/dUj4fn7fJkB+N8v2ocCSivrlicgUKiW2Y:Q9uY6H4K4fSS8vcKGkY

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • WarzoneRat, AveMaria

      WarzoneRat is a native RAT developed in C++ with multiple plugins sold as a MaaS.

    • Modifies Windows Firewall

    • Checks QEMU agent file

      Checks presence of QEMU agent, possibly to detect virtualization.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

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

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Modifies WinLogon

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Winlogon Helper DLL

1
T1004

Defense Evasion

Modify Registry

2
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Command and Control

Web Service

1
T1102

Tasks