General

  • Target

    IRMT.-.Installer.exe

  • Size

    4.2MB

  • Sample

    230322-qgqhvagh93

  • MD5

    9cbc140590014ce28be3f5d8902254d8

  • SHA1

    f2379eb6f3805b86bec34cb028ff6241d9f91301

  • SHA256

    72a338c0522fa2a6895514bbd917ac2111f4f88c1d0cc4a3d2c265a488063806

  • SHA512

    fc857319b1232383eb42fa4eca49b6ccc181000d37ab36de0f66faffb3ed8ebecba8ddef1bf8ad9b638d3c7cbf867b726cbf82f64337ca877ebadf6ac4fdeb44

  • SSDEEP

    98304:d0dXZBh+denJha/4FJ5fwHUB9R9QdKXL9Ki23ST+:d+ZBh5nJkaJ5oHS9YivJ+

Malware Config

Targets

    • Target

      IRMT.-.Installer.exe

    • Size

      4.2MB

    • MD5

      9cbc140590014ce28be3f5d8902254d8

    • SHA1

      f2379eb6f3805b86bec34cb028ff6241d9f91301

    • SHA256

      72a338c0522fa2a6895514bbd917ac2111f4f88c1d0cc4a3d2c265a488063806

    • SHA512

      fc857319b1232383eb42fa4eca49b6ccc181000d37ab36de0f66faffb3ed8ebecba8ddef1bf8ad9b638d3c7cbf867b726cbf82f64337ca877ebadf6ac4fdeb44

    • SSDEEP

      98304:d0dXZBh+denJha/4FJ5fwHUB9R9QdKXL9Ki23ST+:d+ZBh5nJkaJ5oHS9YivJ+

    • Downloads MZ/PE file

    • Modifies Installed Components in the registry

    • Sets file execution options in registry

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • 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

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Legitimate hosting services abused for malware hosting/C2

    • Checks system information in the registry

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

    • Detected potential entity reuse from brand microsoft.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

4
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

7
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

6
T1012

System Information Discovery

6
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks