General

  • Target

    33Rdr1.txt

  • Size

    20B

  • Sample

    230326-zgdnqabh7w

  • MD5

    5fc0041a96b4ea52855687c28e501bde

  • SHA1

    a6f3caa908ec82e7f287ade596bef1879fe8ff8e

  • SHA256

    846547f42c94bc2eb840a4f5052dc646645f59a8ddb165570e05a17c681dabd3

  • SHA512

    2531ba75dc9b42aeffc39870c6c6085955d039f4c9d4809481004a611a709bac982305a3a2d37ba72dd280bc63c45a7b5e2deed13db0110025c81257edabdea3

Malware Config

Targets

    • Target

      33Rdr1.txt

    • Size

      20B

    • MD5

      5fc0041a96b4ea52855687c28e501bde

    • SHA1

      a6f3caa908ec82e7f287ade596bef1879fe8ff8e

    • SHA256

      846547f42c94bc2eb840a4f5052dc646645f59a8ddb165570e05a17c681dabd3

    • SHA512

      2531ba75dc9b42aeffc39870c6c6085955d039f4c9d4809481004a611a709bac982305a3a2d37ba72dd280bc63c45a7b5e2deed13db0110025c81257edabdea3

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • 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.

    • Drops Chrome extension

    • Installs/modifies Browser Helper Object

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

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

2
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

4
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

6
T1012

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Tasks