Analysis

  • max time kernel
    60s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24-06-2022 22:32

General

  • Target

    158c187328cc74a62e49ee95380f6df1a33b865bc010076af7dbc3256660061d.dll

  • Size

    10.0MB

  • MD5

    f650497633ae6be365e053758bb5b51d

  • SHA1

    3848671c027614d00dc666e722b28906aeaf4818

  • SHA256

    158c187328cc74a62e49ee95380f6df1a33b865bc010076af7dbc3256660061d

  • SHA512

    b7f84905944b3805974894ec96d9fd0bd9e8ea984e46572edce958531588a0dff6c6804540fe2bc35238849eb1fe7ea298fd4e2fa4e8d7980fcd72a23e8226d7

Malware Config

Signatures

  • 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.

  • Themida packer 6 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 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\158c187328cc74a62e49ee95380f6df1a33b865bc010076af7dbc3256660061d.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:688
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\158c187328cc74a62e49ee95380f6df1a33b865bc010076af7dbc3256660061d.dll,#1
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1728
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1728 -s 308
        3⤵
        • Program crash
        PID:1692

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/1692-63-0x0000000000000000-mapping.dmp
  • memory/1728-54-0x0000000000000000-mapping.dmp
  • memory/1728-55-0x0000000075AE1000-0x0000000075AE3000-memory.dmp
    Filesize

    8KB

  • memory/1728-56-0x0000000001F90000-0x0000000004A6D000-memory.dmp
    Filesize

    42.9MB

  • memory/1728-58-0x0000000077D80000-0x0000000077F00000-memory.dmp
    Filesize

    1.5MB

  • memory/1728-57-0x0000000001F90000-0x0000000004A6D000-memory.dmp
    Filesize

    42.9MB

  • memory/1728-59-0x0000000001F90000-0x0000000004A6D000-memory.dmp
    Filesize

    42.9MB

  • memory/1728-60-0x0000000001F90000-0x0000000004A6D000-memory.dmp
    Filesize

    42.9MB

  • memory/1728-61-0x0000000001F90000-0x0000000004A6D000-memory.dmp
    Filesize

    42.9MB

  • memory/1728-62-0x0000000001F90000-0x0000000004A6D000-memory.dmp
    Filesize

    42.9MB

  • memory/1728-64-0x0000000077D80000-0x0000000077F00000-memory.dmp
    Filesize

    1.5MB