General

  • Target

    fef94d43785bb65b22223999176aee30.exe

  • Size

    66KB

  • Sample

    211019-sb6nzsgaf4

  • MD5

    fef94d43785bb65b22223999176aee30

  • SHA1

    e0909b279e64aedad50e4184bff28b6e1d1f4d99

  • SHA256

    711596144e0595c7a7b4ce14657415f14a6966eadbaa4efbaea49f9cea746465

  • SHA512

    0c70fb0fee26840accae862d6fd8f1692bb283042372f889b62f3363c85f6e5d0c8e414e72a3b0a3bbaa4c06b47ba27b5235bb03ab82c5e0dc3147d29c4f6c99

Malware Config

Targets

    • Target

      fef94d43785bb65b22223999176aee30.exe

    • Size

      66KB

    • MD5

      fef94d43785bb65b22223999176aee30

    • SHA1

      e0909b279e64aedad50e4184bff28b6e1d1f4d99

    • SHA256

      711596144e0595c7a7b4ce14657415f14a6966eadbaa4efbaea49f9cea746465

    • SHA512

      0c70fb0fee26840accae862d6fd8f1692bb283042372f889b62f3363c85f6e5d0c8e414e72a3b0a3bbaa4c06b47ba27b5235bb03ab82c5e0dc3147d29c4f6c99

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

    • Executes dropped EXE

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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

    • 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.

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks