General

  • Target

    Setup.exe

  • Size

    7.2MB

  • Sample

    230130-ym4lnace56

  • MD5

    71dc24eb7b90f77d23df59af068c3ed6

  • SHA1

    d0e6ce2cfd2dd0cdd988c9981b4f901fe5ac51af

  • SHA256

    cbfca62676f5f4653e7151e00a3fabc91fae98e1c8beab6b2e05eb79cd3b342d

  • SHA512

    eef19afa6bd3b970d3ba696cf5453ac9d0118088239fef1e0e63692f8adc3d76058bd6dc757dc924bc6db476ec3d272ec11c7ca95e718a5057b071df19cf5812

  • SSDEEP

    98304:Es1DgtKt0M154pX1M0gF9OtfXJroEBV5FL0BsS4HJG+V5Os+vE9zK2SCmBhg:0k54fmotPxoI++nOv8ICmBhg

Malware Config

Targets

    • Target

      Setup.exe

    • Size

      7.2MB

    • MD5

      71dc24eb7b90f77d23df59af068c3ed6

    • SHA1

      d0e6ce2cfd2dd0cdd988c9981b4f901fe5ac51af

    • SHA256

      cbfca62676f5f4653e7151e00a3fabc91fae98e1c8beab6b2e05eb79cd3b342d

    • SHA512

      eef19afa6bd3b970d3ba696cf5453ac9d0118088239fef1e0e63692f8adc3d76058bd6dc757dc924bc6db476ec3d272ec11c7ca95e718a5057b071df19cf5812

    • SSDEEP

      98304:Es1DgtKt0M154pX1M0gF9OtfXJroEBV5FL0BsS4HJG+V5Os+vE9zK2SCmBhg:0k54fmotPxoI++nOv8ICmBhg

    • Detect PureCrypter injector

    • PureCrypter

      PureCrypter is a .NET malware loader first seen in early 2021.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • 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.

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Collection

Data from Local System

2
T1005

Tasks