Analysis

  • max time kernel
    489s
  • max time network
    492s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    05-02-2023 17:49

General

  • Target

    Install.exe

  • Size

    5.6MB

  • MD5

    e598585a24862a1e6030e0c17c6a92f8

  • SHA1

    efe83d17d8436ed360d3f1de1e60cfe06b49eec6

  • SHA256

    50daa67bbc7ec76d41bb37731ec56745ddc48cb4286c91b8779bb54b75764d4c

  • SHA512

    db382e3755f77740e84348ee4b87b7b8e6cdfae4c5c9093e43583741247da8925e399c589542159798f5336c564fb84473998be38db61d033a60d51487dce83f

  • SSDEEP

    98304:8iozxSj2ladX3VGTxTYB/y2oo67JFuv+WR+rw71p1iXx20gd0XfTP2mKq6e:8io8jaax3VoxMB/q7JIWWRgw7hiI0O0R

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 4 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:1632

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/1632-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp
    Filesize

    8KB

  • memory/1632-55-0x0000000000F00000-0x0000000001BAD000-memory.dmp
    Filesize

    12.7MB

  • memory/1632-60-0x0000000000F00000-0x0000000001BAD000-memory.dmp
    Filesize

    12.7MB

  • memory/1632-61-0x0000000000F00000-0x0000000001BAD000-memory.dmp
    Filesize

    12.7MB

  • memory/1632-62-0x0000000000F00000-0x0000000001BAD000-memory.dmp
    Filesize

    12.7MB

  • memory/1632-63-0x0000000000F00000-0x0000000001BAD000-memory.dmp
    Filesize

    12.7MB

  • memory/1632-64-0x0000000077B60000-0x0000000077CE0000-memory.dmp
    Filesize

    1.5MB

  • memory/1632-65-0x0000000000F00000-0x0000000001BAD000-memory.dmp
    Filesize

    12.7MB

  • memory/1632-66-0x0000000000F00000-0x0000000001BAD000-memory.dmp
    Filesize

    12.7MB

  • memory/1632-67-0x0000000000F00000-0x0000000001BAD000-memory.dmp
    Filesize

    12.7MB

  • memory/1632-68-0x0000000000F00000-0x0000000001BAD000-memory.dmp
    Filesize

    12.7MB

  • memory/1632-69-0x0000000077B60000-0x0000000077CE0000-memory.dmp
    Filesize

    1.5MB