Analysis

  • max time kernel
    27s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    02-02-2023 12:45

General

  • Target

    Install.exe

  • Size

    684.7MB

  • MD5

    7b1891c680f6ed2164ba0e1111685e59

  • SHA1

    6edc16a653d8386503c85b8d6808fe23cff4b8d4

  • SHA256

    80b627c3ba8a4f128f7b2e9a06988a95e6db084f29c66fb43ca3491d4d847fb8

  • SHA512

    3e3496a6cd4990ba69613cb33d889513f3a08cde6af6b3946070f58f6e2bb01c4014236200dfdd9c943065beb2d4d8d42c5b3e902af80187c460bd6ffe80cc6f

  • SSDEEP

    196608:ZKXGveJUwY3JEnr0AZF5OMdyBLMmkKJDACfjttklWe:ZKXPEanYAZqMoAYMCfjj/

Malware Config

Signatures

  • PrivateLoader

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

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 9 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Install.exe
    "C:\Users\Admin\AppData\Local\Temp\Install.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks computer location settings
    • Checks whether UAC is enabled
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    PID:968

Network

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

1
T1081

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/968-54-0x0000000075351000-0x0000000075353000-memory.dmp
    Filesize

    8KB

  • memory/968-55-0x0000000000BA0000-0x000000000162C000-memory.dmp
    Filesize

    10.5MB

  • memory/968-57-0x0000000000BA0000-0x000000000162C000-memory.dmp
    Filesize

    10.5MB

  • memory/968-59-0x0000000077670000-0x00000000777F0000-memory.dmp
    Filesize

    1.5MB

  • memory/968-58-0x0000000000BA0000-0x000000000162C000-memory.dmp
    Filesize

    10.5MB

  • memory/968-60-0x0000000000BA0000-0x000000000162C000-memory.dmp
    Filesize

    10.5MB

  • memory/968-61-0x0000000000BA0000-0x000000000162C000-memory.dmp
    Filesize

    10.5MB

  • memory/968-62-0x0000000000BA0000-0x000000000162C000-memory.dmp
    Filesize

    10.5MB

  • memory/968-63-0x0000000000BA0000-0x000000000162C000-memory.dmp
    Filesize

    10.5MB

  • memory/968-64-0x0000000000BA0000-0x000000000162C000-memory.dmp
    Filesize

    10.5MB

  • memory/968-65-0x0000000000BA0000-0x000000000162C000-memory.dmp
    Filesize

    10.5MB

  • memory/968-66-0x0000000077670000-0x00000000777F0000-memory.dmp
    Filesize

    1.5MB