Resubmissions

29-07-2021 15:09

210729-wzvqb879aa 10

26-07-2021 20:08

210726-9lbbrtep2a 10

26-07-2021 20:05

210726-bdzs4aydgx 9

Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    26-07-2021 20:05

General

  • Target

    Setup.exe

  • Size

    3.2MB

  • MD5

    6a42e481e8c2f649a854b08cdaf73be4

  • SHA1

    66d7883449483a44232053f77ed1701c3c3ac9e3

  • SHA256

    3f4a6504fe8dc05ff75fe4a3bdf27eb509b2431ebaf4e189c23b9297ea300f19

  • SHA512

    9d4b1d3ffafebf0faebe550f2d3064a1f515b908e049a5aca07b151d8bfe165d545f244bfd3960283a9310c18e50968834dc3fc471258ef8ddf7541e597d87be

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
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:360

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/360-59-0x0000000075451000-0x0000000075453000-memory.dmp
    Filesize

    8KB

  • memory/360-61-0x0000000000930000-0x0000000000931000-memory.dmp
    Filesize

    4KB

  • memory/360-63-0x00000000055D0000-0x00000000055D1000-memory.dmp
    Filesize

    4KB