Resubmissions

05-06-2021 18:38

210605-hf9v5m752s 4

05-06-2021 18:30

210605-p2t1d7794j 10

General

  • Target

    Grossly Minecraft 1..exe

  • Size

    8MB

  • Sample

    210605-p2t1d7794j

  • MD5

    7c6c6b9e9111447af1236378c02566c2

  • SHA1

    21340606037756badc4332a8217545dd47e9f24b

  • SHA256

    8a516f2df2e8f496a4bf7866036797959e63bbb6658e1f82b671b85227afecb5

  • SHA512

    2a64e4d159cfc1748eb4768d6072df5c6014a01c81681d26aa35ec9ec1e9346fd3961f51d3db5ff424120ee01486b7f92685d0ec8e935488f2b82cd2b40a2745

Malware Config

Targets

    • Target

      Grossly Minecraft 1..exe

    • Size

      8MB

    • MD5

      7c6c6b9e9111447af1236378c02566c2

    • SHA1

      21340606037756badc4332a8217545dd47e9f24b

    • SHA256

      8a516f2df2e8f496a4bf7866036797959e63bbb6658e1f82b671b85227afecb5

    • SHA512

      2a64e4d159cfc1748eb4768d6072df5c6014a01c81681d26aa35ec9ec1e9346fd3961f51d3db5ff424120ee01486b7f92685d0ec8e935488f2b82cd2b40a2745

    • Registers COM server for autorun

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • UPX packed file

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

    • Loads dropped DLL

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • 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

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Tasks