General

  • Target

    desktop.ini

  • Size

    282B

  • Sample

    230406-xx1gbagf9y

  • MD5

    3a37312509712d4e12d27240137ff377

  • SHA1

    30ced927e23b584725cf16351394175a6d2a9577

  • SHA256

    b029393ea7b7cf644fb1c9f984f57c1980077562ee2e15d0ffd049c4c48098d3

  • SHA512

    dbb9abe70f8a781d141a71651a62a3a743c71a75a8305e9d23af92f7307fb639dc4a85499115885e2a781b040cbb7613f582544c2d6de521e588531e9c294b05

Malware Config

Targets

    • Target

      desktop.ini

    • Size

      282B

    • MD5

      3a37312509712d4e12d27240137ff377

    • SHA1

      30ced927e23b584725cf16351394175a6d2a9577

    • SHA256

      b029393ea7b7cf644fb1c9f984f57c1980077562ee2e15d0ffd049c4c48098d3

    • SHA512

      dbb9abe70f8a781d141a71651a62a3a743c71a75a8305e9d23af92f7307fb639dc4a85499115885e2a781b040cbb7613f582544c2d6de521e588531e9c294b05

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Sets service image path 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

    • Windows security modification

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

3
T1060

Bootkit

1
T1067

Defense Evasion

Modify Registry

4
T1112

Disabling Security Tools

1
T1089

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

6
T1012

System Information Discovery

5
T1082

Security Software Discovery

1
T1063

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks