General

  • Target

    keygen-step-4.exe

  • Size

    3.3MB

  • Sample

    210507-lqww8yn1vj

  • MD5

    c679be2fa8a3ab7a239aa742471ba852

  • SHA1

    73ba03c525f2d759bf3c3d60c4a6e1d75cf33031

  • SHA256

    b67bbcbde3ed2da03e506745e4288ef3d328964dbc8eb22f1f198a973020e5b6

  • SHA512

    9f163dd544ee782dfa98a3d5fe2c3b7e85f92e58052b7eaf36989b07bb1eb31890e9ede07a3b990728f815860aa4ae6212c0df8fd91088d3d52eaa34530c2f9b

Malware Config

Targets

    • Target

      keygen-step-4.exe

    • Size

      3.3MB

    • MD5

      c679be2fa8a3ab7a239aa742471ba852

    • SHA1

      73ba03c525f2d759bf3c3d60c4a6e1d75cf33031

    • SHA256

      b67bbcbde3ed2da03e506745e4288ef3d328964dbc8eb22f1f198a973020e5b6

    • SHA512

      9f163dd544ee782dfa98a3d5fe2c3b7e85f92e58052b7eaf36989b07bb1eb31890e9ede07a3b990728f815860aa4ae6212c0df8fd91088d3d52eaa34530c2f9b

    • PlugX

      PlugX is a RAT (Remote Access Trojan) that has been around since 2008.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Executes dropped EXE

    • UPX packed file

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks