Analysis

  • max time kernel
    118s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12/02/2022, 08:34

General

  • Target

    3adaf2bfb411db2b56601739580b8577a11089beffa33df2edbc9369c2e4faa7.exe

  • Size

    8.4MB

  • MD5

    01916ff0453c0730f2a6f4a822840722

  • SHA1

    1616f0667616e90847d0585923ba1af1773371ab

  • SHA256

    3adaf2bfb411db2b56601739580b8577a11089beffa33df2edbc9369c2e4faa7

  • SHA512

    b296150c4cecff1324db41a61ab18b3944a27972abf1f752720efe62f803f56f2d1a4917b96f560e28238dcfc472300749e090a45575a40772af98303226c8a4

Malware Config

Extracted

Family

cryptbot

C2

tisysc64.top

morvak06.top

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Executes dropped EXE 5 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Loads dropped DLL 15 IoCs
  • Themida packer 13 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 Program Files directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3adaf2bfb411db2b56601739580b8577a11089beffa33df2edbc9369c2e4faa7.exe
    "C:\Users\Admin\AppData\Local\Temp\3adaf2bfb411db2b56601739580b8577a11089beffa33df2edbc9369c2e4faa7.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1156
    • C:\Program Files (x86)\affair1\Setup.exe
      "C:\Program Files (x86)\affair1\Setup.exe"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious use of WriteProcessMemory
      PID:464
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\vHpOavYo & timeout 4 & del /f /q "C:\Program Files (x86)\affair1\Setup.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1112
        • C:\Windows\SysWOW64\timeout.exe
          timeout 4
          4⤵
          • Delays execution with timeout.exe
          PID:1488
    • C:\Program Files (x86)\affair1\Setup1.exe
      "C:\Program Files (x86)\affair1\Setup1.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Loads dropped DLL
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:924
      • C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe
        "C:\Users\Admin\AppData\Roaming\NCH Software\DrawPad\DpEditor.exe"
        3⤵
        • Executes dropped EXE
        • Checks BIOS information in registry
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        PID:1404
    • C:\Program Files (x86)\affair1\KMSpico.exe
      "C:\Program Files (x86)\affair1\KMSpico.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1688
      • C:\Users\Admin\AppData\Local\Temp\is-1L5TB.tmp\KMSpico.tmp
        "C:\Users\Admin\AppData\Local\Temp\is-1L5TB.tmp\KMSpico.tmp" /SL5="$80150,2952592,69120,C:\Program Files (x86)\affair1\KMSpico.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: GetForegroundWindowSpam
        PID:1552

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/464-85-0x0000000000FE0000-0x0000000001028000-memory.dmp

          Filesize

          288KB

        • memory/464-84-0x0000000000250000-0x0000000000251000-memory.dmp

          Filesize

          4KB

        • memory/464-83-0x000000000044B000-0x000000000044D000-memory.dmp

          Filesize

          8KB

        • memory/924-86-0x0000000000DF0000-0x00000000014D0000-memory.dmp

          Filesize

          6.9MB

        • memory/924-87-0x0000000000DF0000-0x00000000014D0000-memory.dmp

          Filesize

          6.9MB

        • memory/924-88-0x0000000000DF0000-0x00000000014D0000-memory.dmp

          Filesize

          6.9MB

        • memory/924-89-0x0000000077D30000-0x0000000077D32000-memory.dmp

          Filesize

          8KB

        • memory/1156-54-0x00000000766D1000-0x00000000766D3000-memory.dmp

          Filesize

          8KB

        • memory/1404-94-0x0000000000CE0000-0x00000000013C0000-memory.dmp

          Filesize

          6.9MB

        • memory/1404-95-0x0000000000CE0000-0x00000000013C0000-memory.dmp

          Filesize

          6.9MB

        • memory/1404-96-0x0000000000CE0000-0x00000000013C0000-memory.dmp

          Filesize

          6.9MB

        • memory/1552-82-0x0000000000240000-0x0000000000241000-memory.dmp

          Filesize

          4KB

        • memory/1688-77-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB

        • memory/1688-73-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB