General

  • Target

    file.exe

  • Size

    4.0MB

  • Sample

    230119-nyfc4acg6s

  • MD5

    b1b74e8866c7a221a6b658d95c383dc8

  • SHA1

    c5b9db5706be26b3064b6f69dacfdf37f2e62568

  • SHA256

    831c6cc29413ef037220c63a9bf30e2ad094c0a9ca343f71258502944869a9a2

  • SHA512

    20f77f7fc3040f45d72eb475577f974928f389d29c3feb07171d51ce493e3a5a7f869400b4c86c58e0cefd1a9dc5faa47bc10d23455a0c60719be8faaebff9c0

  • SSDEEP

    98304:XpfXL4dK7P7CbM5zD6sILTjblMS0uc25rTNp5SnluY2968:Zzpi4osI3jhMSNc2jSn8j968

Malware Config

Targets

    • Target

      file.exe

    • Size

      4.0MB

    • MD5

      b1b74e8866c7a221a6b658d95c383dc8

    • SHA1

      c5b9db5706be26b3064b6f69dacfdf37f2e62568

    • SHA256

      831c6cc29413ef037220c63a9bf30e2ad094c0a9ca343f71258502944869a9a2

    • SHA512

      20f77f7fc3040f45d72eb475577f974928f389d29c3feb07171d51ce493e3a5a7f869400b4c86c58e0cefd1a9dc5faa47bc10d23455a0c60719be8faaebff9c0

    • SSDEEP

      98304:XpfXL4dK7P7CbM5zD6sILTjblMS0uc25rTNp5SnluY2968:Zzpi4osI3jhMSNc2jSn8j968

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

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

    • Checks BIOS information in registry

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

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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.

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Collection

Data from Local System

2
T1005

Tasks