Analysis

  • max time kernel
    110s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    19-12-2021 18:13

General

  • Target

    SecuriteInfo.com.Variant.Razy.579786.28822.10733.exe

  • Size

    4.1MB

  • MD5

    b04072a01ba1f12318fdd1ee21196564

  • SHA1

    8d88edbe59d587888494f4dbf83ef0612106026b

  • SHA256

    1db50451a00a658d3dedcd3f7b68dee2fa5c7fd86bc4695ccc970de9fb349c66

  • SHA512

    fa05225040272c82491610906438d7ea744ad0a119fea567d9138c5a9067458d363e6bf1bb80fd8b913767810c075edea92d383b941e982359744920cc0fb90f

Malware Config

Signatures

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

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

  • Themida packer 1 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Razy.579786.28822.10733.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Razy.579786.28822.10733.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:2380
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2380 -s 848
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3172

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2380-117-0x00007FFF80030000-0x00007FFF80031000-memory.dmp
    Filesize

    4KB

  • memory/2380-116-0x00007FFF80000000-0x00007FFF80002000-memory.dmp
    Filesize

    8KB

  • memory/2380-118-0x00007FF7C0C10000-0x00007FF7C0C11000-memory.dmp
    Filesize

    4KB