General

  • Target

    file

  • Size

    7MB

  • Sample

    231207-ym2gasfc24

  • MD5

    fca38988f95f893355d9f020a1f71ee3

  • SHA1

    c3b9647467c9b434ba6a796c05f27a350c6fd8c8

  • SHA256

    aae089ffc7f6e35506106b454fd2edfc4941467e06f76d173f9cbd9e02110031

  • SHA512

    266566c7ec8057122c5ca08dc00c16c5c9e73ea552c4c3fbc5a41c56e2fb2852b8dbc1dd2161980609d750cc0d120f2d074445585cbe5bf33c6beb2ed5bfb36c

  • SSDEEP

    196608:91OUHIbPGg9PaDD9zATbAXqXWAXz2v/tBDPRb7S:3OUIb+Iiwk6mPv/tVRq

Malware Config

Targets

    • Target

      file

    • Size

      7MB

    • MD5

      fca38988f95f893355d9f020a1f71ee3

    • SHA1

      c3b9647467c9b434ba6a796c05f27a350c6fd8c8

    • SHA256

      aae089ffc7f6e35506106b454fd2edfc4941467e06f76d173f9cbd9e02110031

    • SHA512

      266566c7ec8057122c5ca08dc00c16c5c9e73ea552c4c3fbc5a41c56e2fb2852b8dbc1dd2161980609d750cc0d120f2d074445585cbe5bf33c6beb2ed5bfb36c

    • SSDEEP

      196608:91OUHIbPGg9PaDD9zATbAXqXWAXz2v/tBDPRb7S:3OUIb+Iiwk6mPv/tVRq

    • Modifies Windows Defender Real-time Protection settings

    • Windows security bypass

    • Blocklisted process makes network request

    • 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.

    • 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.

    • Checks installed software on the system

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

    • Drops Chrome extension

    • Drops desktop.ini file(s)

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

2
T1112

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Collection

Data from Local System

1
T1005

Tasks