Analysis

  • max time kernel
    155s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    15-02-2022 06:30

General

  • Target

    bff57d0db80ce0c76d7bed268ba84aa395bc2ad41a47c45c8292bf2a52d072db.exe

  • Size

    2.7MB

  • MD5

    33944a9e78b81f8daf8589fde57a6ab0

  • SHA1

    4f26c57770dc8745e7b31e973ed9bd810f9dd34f

  • SHA256

    bff57d0db80ce0c76d7bed268ba84aa395bc2ad41a47c45c8292bf2a52d072db

  • SHA512

    1ff156a3817a3fba52de59b7243bb8fd5a6fc5d7c1405c8c44fcd5cad01053cc739579b8f57a56c87914a1cfb6effe5e465c069f4c7b9009062af3af26d4ffd3

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Themida packer 8 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 49 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3152
  • C:\Users\Admin\AppData\Local\Temp\bff57d0db80ce0c76d7bed268ba84aa395bc2ad41a47c45c8292bf2a52d072db.exe
    "C:\Users\Admin\AppData\Local\Temp\bff57d0db80ce0c76d7bed268ba84aa395bc2ad41a47c45c8292bf2a52d072db.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2464
    • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
      "C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      PID:2544
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:3648
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:3296

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
    MD5

    33944a9e78b81f8daf8589fde57a6ab0

    SHA1

    4f26c57770dc8745e7b31e973ed9bd810f9dd34f

    SHA256

    bff57d0db80ce0c76d7bed268ba84aa395bc2ad41a47c45c8292bf2a52d072db

    SHA512

    1ff156a3817a3fba52de59b7243bb8fd5a6fc5d7c1405c8c44fcd5cad01053cc739579b8f57a56c87914a1cfb6effe5e465c069f4c7b9009062af3af26d4ffd3

  • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
    MD5

    33944a9e78b81f8daf8589fde57a6ab0

    SHA1

    4f26c57770dc8745e7b31e973ed9bd810f9dd34f

    SHA256

    bff57d0db80ce0c76d7bed268ba84aa395bc2ad41a47c45c8292bf2a52d072db

    SHA512

    1ff156a3817a3fba52de59b7243bb8fd5a6fc5d7c1405c8c44fcd5cad01053cc739579b8f57a56c87914a1cfb6effe5e465c069f4c7b9009062af3af26d4ffd3

  • memory/2464-130-0x0000000077124000-0x0000000077126000-memory.dmp
    Filesize

    8KB

  • memory/2464-131-0x00000000002B0000-0x00000000009AD000-memory.dmp
    Filesize

    7.0MB

  • memory/2464-132-0x00000000002B0000-0x00000000009AD000-memory.dmp
    Filesize

    7.0MB

  • memory/2464-133-0x00000000002B0000-0x00000000009AD000-memory.dmp
    Filesize

    7.0MB

  • memory/2544-136-0x0000000000EC0000-0x00000000015BD000-memory.dmp
    Filesize

    7.0MB

  • memory/2544-137-0x0000000000EC0000-0x00000000015BD000-memory.dmp
    Filesize

    7.0MB

  • memory/2544-138-0x0000000000EC0000-0x00000000015BD000-memory.dmp
    Filesize

    7.0MB