Analysis

  • max time kernel
    157s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Themida packer 10 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Program Files directory 8 IoCs
  • Drops file in Windows 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.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3adaf2bfb411db2b56601739580b8577a11089beffa33df2edbc9369c2e4faa7.exe
    "C:\Users\Admin\AppData\Local\Temp\3adaf2bfb411db2b56601739580b8577a11089beffa33df2edbc9369c2e4faa7.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1288
    • C:\Program Files (x86)\affair1\Setup.exe
      "C:\Program Files (x86)\affair1\Setup.exe"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      PID:4732
    • C:\Program Files (x86)\affair1\Setup1.exe
      "C:\Program Files (x86)\affair1\Setup1.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4600
      • 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:2652
    • C:\Program Files (x86)\affair1\KMSpico.exe
      "C:\Program Files (x86)\affair1\KMSpico.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2452
      • C:\Users\Admin\AppData\Local\Temp\is-EQ18E.tmp\KMSpico.tmp
        "C:\Users\Admin\AppData\Local\Temp\is-EQ18E.tmp\KMSpico.tmp" /SL5="$5002A,2952592,69120,C:\Program Files (x86)\affair1\KMSpico.exe"
        3⤵
        • Executes dropped EXE
        PID:4932
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:4716
  • 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:1636

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2452-136-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/2452-141-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB

        • memory/2652-153-0x0000000000EA0000-0x0000000001580000-memory.dmp

          Filesize

          6.9MB

        • memory/2652-152-0x0000000000EA0000-0x0000000001580000-memory.dmp

          Filesize

          6.9MB

        • memory/2652-151-0x0000000000EA0000-0x0000000001580000-memory.dmp

          Filesize

          6.9MB

        • memory/4600-144-0x00000000007D0000-0x0000000000EB0000-memory.dmp

          Filesize

          6.9MB

        • memory/4600-143-0x0000000077814000-0x0000000077816000-memory.dmp

          Filesize

          8KB

        • memory/4600-138-0x00000000007D0000-0x0000000000EB0000-memory.dmp

          Filesize

          6.9MB

        • memory/4600-142-0x00000000007D0000-0x0000000000EB0000-memory.dmp

          Filesize

          6.9MB

        • memory/4716-147-0x0000019812C40000-0x0000019812C50000-memory.dmp

          Filesize

          64KB

        • memory/4716-148-0x0000019815130000-0x0000019815134000-memory.dmp

          Filesize

          16KB

        • memory/4716-146-0x0000019812A20000-0x0000019812A30000-memory.dmp

          Filesize

          64KB

        • memory/4732-154-0x000000000044B000-0x000000000044D000-memory.dmp

          Filesize

          8KB

        • memory/4732-155-0x0000000000CF0000-0x0000000000CF1000-memory.dmp

          Filesize

          4KB

        • memory/4732-156-0x0000000002A50000-0x0000000002A98000-memory.dmp

          Filesize

          288KB

        • memory/4932-145-0x0000000000540000-0x0000000000541000-memory.dmp

          Filesize

          4KB