Analysis

  • max time kernel
    295s
  • max time network
    294s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    13-07-2024 19:06

General

  • Target

    Venom RAT + Stealer + HVNC.exe

  • Size

    14.3MB

  • MD5

    d9a91babacaf65923e28841d7995b80c

  • SHA1

    57df4208c6a87ef881cf2021a1ad431a21456248

  • SHA256

    8b5773001a13cd82f47b129c4673c2fdfe9a19852825a72b1231f6333cd22951

  • SHA512

    6e0eb14b2a14d35884dd6d4505ea78d28ae6cee6ec59cabcb9a2499f63539d217196d7afca7b8e299ca8c9b447218f421c5372ebbd0167fbe2d803c68125c6bc

  • SSDEEP

    393216:w2CdPoVETWa1Z4c80Gz/e5Yyb0Pn1a7kIGvZscp1Ae8A:wWIWa1acPGC5Yyb0PnikXZ1p198

Malware Config

Extracted

Family

xworm

Version

3.0

C2

147.185.221.20:49485

Attributes
  • Install_directory

    %Public%

  • install_file

    RtkAudUService32.exe

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 11 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 4 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Venom RAT + Stealer + HVNC.exe
    "C:\Users\Admin\AppData\Local\Temp\Venom RAT + Stealer + HVNC.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:4444
    • C:\Windows\System.exe
      "C:\Windows\System.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4752
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\System.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4068
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:656
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\System.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4392
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System" /tr "C:\Users\Public\System.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:96
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /im ngrok.exe /f
        3⤵
        • Kills process with taskkill
        PID:2292
      • C:\Users\Admin\AppData\Local\Temp\ngrok.exe
        C:\Users\Admin\AppData\Local\Temp\ngrok.exe config add-authtoken 2de1vjfbhkIf8u2KTB3aNDqCqDw_59TGvKSA8VjcZZgKgDVQR
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:2052
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /im ngrok.exe /f
        3⤵
        • Kills process with taskkill
        PID:3832
      • C:\Users\Admin\AppData\Local\Temp\ngrok.exe
        C:\Users\Admin\AppData\Local\Temp\ngrok.exe config add-authtoken 2de1vjfbhkIf8u2KTB3aNDqCqDw_59TGvKSA8VjcZZgKgDVQR
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:5084
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /im ngrok.exe /f
        3⤵
        • Kills process with taskkill
        PID:1344
      • C:\Users\Admin\AppData\Local\Temp\ngrok.exe
        C:\Users\Admin\AppData\Local\Temp\ngrok.exe config add-authtoken 2de1vjfbhkIf8u2KTB3aNDqCqDw_59TGvKSA8VjcZZgKgDVQR
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:4112
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /im ngrok.exe /f
        3⤵
        • Kills process with taskkill
        PID:2284
      • C:\Users\Admin\AppData\Local\Temp\ngrok.exe
        C:\Users\Admin\AppData\Local\Temp\ngrok.exe config add-authtoken 2de1vjfbhkIf8u2KTB3aNDqCqDw_59TGvKSA8VjcZZgKgDVQR
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:3224
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /delete /f /tn "System"
        3⤵
          PID:4260
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpEB18.tmp.bat""
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4672
          • C:\Windows\system32\timeout.exe
            timeout 3
            4⤵
            • Delays execution with timeout.exe
            PID:2096
      • C:\Users\Admin\AppData\Local\Temp\Venom RAT + HVNC + Stealer + Grabber.exe
        "C:\Users\Admin\AppData\Local\Temp\Venom RAT + HVNC + Stealer + Grabber.exe"
        2⤵
        • Executes dropped EXE
        PID:4600
    • C:\Users\Public\System.exe
      C:\Users\Public\System.exe
      1⤵
      • Executes dropped EXE
      PID:4264
    • C:\Users\Public\System.exe
      C:\Users\Public\System.exe
      1⤵
      • Executes dropped EXE
      PID:4460
    • C:\Users\Public\System.exe
      C:\Users\Public\System.exe
      1⤵
      • Executes dropped EXE
      PID:4208
    • C:\Users\Public\System.exe
      C:\Users\Public\System.exe
      1⤵
      • Executes dropped EXE
      PID:3584
    • C:\Users\Public\System.exe
      C:\Users\Public\System.exe
      1⤵
      • Executes dropped EXE
      PID:4224

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\System.exe.log

      Filesize

      654B

      MD5

      16c5fce5f7230eea11598ec11ed42862

      SHA1

      75392d4824706090f5e8907eee1059349c927600

      SHA256

      87ba77c13905298acbac72be90949c4fe0755b6eff9777615aa37f252515f151

      SHA512

      153edd6da59beea6cc411ed7383c32916425d6ebb65f04c65aab7c1d6b25443d143aa8449aa92149de0ad8a975f6ecaa60f9f7574536eec6b38fe5fd3a6c6adc

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

      Filesize

      3KB

      MD5

      8592ba100a78835a6b94d5949e13dfc1

      SHA1

      63e901200ab9a57c7dd4c078d7f75dcd3b357020

      SHA256

      fdd7d9def6f9f0c0f2e60dbc8a2d1999071cd7d3095e9e087bb1cda7a614ac3c

      SHA512

      87f98e6cb61b2a2a7d65710c4d33881d89715eb7a06e00d492259f35c3902498baabffc5886be0ec5a14312ad4c262e3fc40cd3a5cb91701af0fb229726b88c3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      1KB

      MD5

      d4525bf2e58ddf87ec6cc09ff12dbc4d

      SHA1

      a40b9b897df55589ff29619ebbeda6c541a87c29

      SHA256

      4fca6a39b75e82ebb810bb1c40db8b7e8b2f0d6e8f243076037ef2e9645384ee

      SHA512

      189ba97700384838cd34914dc303bd6788f11856e044b936a96fa3d3111fcb92621dd410242393c1523faed2a4ced31eee4b3307194b39fb4447d485cc5ab1c3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      1KB

      MD5

      dc58d5487ae48ee6eb834bcb7166bcae

      SHA1

      88dcea623740f0aa30e36bfe96197dc986d6385b

      SHA256

      6133174d53df49c43750166d54317cae85c8aefb0b659a43928fd0ee5e4a89d3

      SHA512

      f8d4c9591708b1958605e582e59018b477950e2e76efd4c964d14ed07e488b149d15c1d476fbb3518e542af67b2a0c9fed42dd8acff28d42e24b8aeed3e255c1

    • C:\Users\Admin\AppData\Local\Temp\Venom RAT + HVNC + Stealer + Grabber.exe

      Filesize

      14.2MB

      MD5

      3b3a304c6fc7a3a1d9390d7cbff56634

      SHA1

      e8bd5244e6362968f5017680da33f1e90ae63dd7

      SHA256

      7331368c01b2a16bda0f013f376a039e6aeb4cb2dd8b0c2afc7ca208fb544c58

      SHA512

      7f1beacb6449b3b3e108016c8264bb9a21ecba526c2778794f16a7f9c817c0bbd5d4cf0c208d706d25c54322a875da899ab047aab1e07684f6b7b6083981abe5

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lqylehvf.p11.ps1

      Filesize

      1B

      MD5

      c4ca4238a0b923820dcc509a6f75849b

      SHA1

      356a192b7913b04c54574d18c28d46e6395428ab

      SHA256

      6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

      SHA512

      4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

    • C:\Users\Admin\AppData\Local\Temp\ngrok.exe

      Filesize

      16.4MB

      MD5

      ee2397b5f70e81dd97a4076ba1cb1d3a

      SHA1

      8350f648ebd269b4bca720b4143dd3edcdfafa8f

      SHA256

      b5b1454e2e3a66edf3bde92b29a4f4b324fa3c3d88dc28e378c22cb42237cc67

      SHA512

      57fc76393881c504ac4c37a8ea812a7e21f2bed4ffa4de42a2e6e4558a78bba679ec0f8fcdc39798306c3a97e424fb875680b7f78ac07be3f7f58df093575562

    • C:\Users\Admin\AppData\Local\Temp\tmpEB18.tmp.bat

      Filesize

      135B

      MD5

      bd456926dcca380b13c994da1fdfb9c8

      SHA1

      bfaf0aaf91f23769da647d404200b683ecec3e7d

      SHA256

      d98980ebda34b39b6a5fcb12e52270f1b7011919d2b5929a693e354508d6b5aa

      SHA512

      e37940d6882b5b6af024f0c117f90a47c8ce5d00e0b43ac83235e4d4df509308a40d6acc8f00e29e3c5b5f0c0f5c639f2a1495d4344a4314061034ac8e014014

    • C:\Users\Admin\AppData\Local\ngrok\ngrok.yml

      Filesize

      74B

      MD5

      bba5b2391399c16d21db57bd7e890189

      SHA1

      4b5eabb00b80bd8322b77069e5e017e5289fd357

      SHA256

      d10af7343833d3e3db3d4d19237c967fa2d8d27b3737b4eb2d5ef90fd32c3a05

      SHA512

      c800e9a34c8cead8b91fb1f0b6d9bf4cf6e3e31d9073be242fe2a8de007c1693353923054113c0c8ba73446bff9fc92750b539bcfd6aaa5a42044ac9a772bd47

    • C:\Windows\System.exe

      Filesize

      76KB

      MD5

      a87e89722f01fad0ba63a165409aa1b6

      SHA1

      db66ceb27a9d35bd6f1826c1019d43c9b6116a8a

      SHA256

      c35a4341298f16eb875e646c79922b67759e86c0ab9348ad48bf95606c165eb5

      SHA512

      91225d1088f8fce5c2894e606f876177a630f851f9ec4a973de5b7a5f45a726085e2b22522c419d94d97679898ba355fbfc11190aa4c0290be5e14a73d27e109

    • memory/4068-27-0x000001916E7B0000-0x000001916E826000-memory.dmp

      Filesize

      472KB

    • memory/4068-24-0x000001916E090000-0x000001916E0B2000-memory.dmp

      Filesize

      136KB

    • memory/4444-3-0x00007FFAA0040000-0x00007FFAA0A2C000-memory.dmp

      Filesize

      9.9MB

    • memory/4444-17-0x00007FFAA0040000-0x00007FFAA0A2C000-memory.dmp

      Filesize

      9.9MB

    • memory/4444-1-0x0000000000E80000-0x0000000001CCA000-memory.dmp

      Filesize

      14.3MB

    • memory/4444-0-0x00007FFAA0043000-0x00007FFAA0044000-memory.dmp

      Filesize

      4KB

    • memory/4600-164-0x00007FFAA0040000-0x00007FFAA0A2C000-memory.dmp

      Filesize

      9.9MB

    • memory/4600-18-0x00000214B2C20000-0x00000214B3A54000-memory.dmp

      Filesize

      14.2MB

    • memory/4600-16-0x00007FFAA0040000-0x00007FFAA0A2C000-memory.dmp

      Filesize

      9.9MB

    • memory/4752-10-0x00007FFAA0040000-0x00007FFAA0A2C000-memory.dmp

      Filesize

      9.9MB

    • memory/4752-165-0x00007FFAA0040000-0x00007FFAA0A2C000-memory.dmp

      Filesize

      9.9MB

    • memory/4752-170-0x000000001DAD0000-0x000000001E1DC000-memory.dmp

      Filesize

      7.0MB

    • memory/4752-8-0x0000000000E00000-0x0000000000E1A000-memory.dmp

      Filesize

      104KB

    • memory/4752-19-0x00007FFAA0040000-0x00007FFAA0A2C000-memory.dmp

      Filesize

      9.9MB

    • memory/4752-188-0x000000001F710000-0x000000001F8CA000-memory.dmp

      Filesize

      1.7MB

    • memory/4752-195-0x00007FFAA0040000-0x00007FFAA0A2C000-memory.dmp

      Filesize

      9.9MB

    • memory/4752-163-0x00007FFAA0040000-0x00007FFAA0A2C000-memory.dmp

      Filesize

      9.9MB