Overview

overview

10

Static

static

10

Chaos Rans...v4.exe

windows7-x64

10

Chaos Rans...v4.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 06:49

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General

  • Target

    Chaos Ransomware Builderv4.exe

  • Size

    548KB

  • MD5

    9a44537dfcf8ceac515c4aa92f30f4af

  • SHA1

    9a26c3ff3251f69950ce09e3692ce14b5dd536b1

  • SHA256

    3246be7f25f8f4cd9ade8f0a8faf12847df126eecf65d7e8012f35ab45e73a40

  • SHA512

    94da6f1aaae6c25e47e31ac246a8703ec8f7b2893a44ae10f7600cc79ba673bca60d7fb41b2ebac8a4b5497ab98a0a195a32d93f4fc140ba7c9cd25811943500

  • SSDEEP

    3072:COn8W06i2YcRVm16Pn6dpzqJG/sX9i2YcRPm16Pn6ckCsrwl5ZEy3/MZt18rVi2Z:ziWm16WqJEsNiym16rntziSm167

Score
10/10
chaosdefense_evasionevasionexecutionimpactransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\Documents\read_it.txt

Family

chaos

Ransom Note
----> Chaos is multi language ransomware. Translate your note to any language <---- All of your files have been encrypted Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help.What can I do to get my files back?You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $1,500. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.1473766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 4 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Drops desktop.ini file(s) 34 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies registry class 61 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 37 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 24 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.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builderv4.exe
    "C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builderv4.exe"
    1⤵
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\4jtjrmlz\4jtjrmlz.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3444
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESE2F8.tmp" "c:\Users\Admin\Downloads\CSCDD97E7E7B7DE445B9E8EA3FF2FFDAB.TMP"
        3⤵
          PID:3368
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:3792
      • C:\Users\Admin\Downloads\test.exe
        "C:\Users\Admin\Downloads\test.exe"
        1⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4360
        • C:\Users\Admin\AppData\Roaming\svchost.exe
          "C:\Users\Admin\AppData\Roaming\svchost.exe"
          2⤵
          • Checks computer location settings
          • Drops startup file
          • Executes dropped EXE
          • Drops desktop.ini file(s)
          • Modifies registry class
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4560
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1228
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              4⤵
              • Interacts with shadow copies
              PID:4400
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic shadowcopy delete
              4⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:4392
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2860
            • C:\Windows\system32\bcdedit.exe
              bcdedit /set {default} bootstatuspolicy ignoreallfailures
              4⤵
              • Modifies boot configuration data using bcdedit
              PID:4880
            • C:\Windows\system32\bcdedit.exe
              bcdedit /set {default} recoveryenabled no
              4⤵
              • Modifies boot configuration data using bcdedit
              PID:5048
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1480
            • C:\Windows\system32\wbadmin.exe
              wbadmin delete catalog -quiet
              4⤵
              • Deletes backup catalog
              PID:1040
          • C:\Windows\system32\NOTEPAD.EXE
            "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
            3⤵
            • Opens file in notepad (likely ransom note)
            PID:4336
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:540
      • C:\Windows\system32\wbengine.exe
        "C:\Windows\system32\wbengine.exe"
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3764
      • C:\Windows\System32\vdsldr.exe
        C:\Windows\System32\vdsldr.exe -Embedding
        1⤵
          PID:2096
        • C:\Windows\System32\vds.exe
          C:\Windows\System32\vds.exe
          1⤵
          • Checks SCSI registry key(s)
          PID:1432
        • C:\Windows\system32\OpenWith.exe
          C:\Windows\system32\OpenWith.exe -Embedding
          1⤵
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:4372
        • C:\Windows\system32\OpenWith.exe
          C:\Windows\system32\OpenWith.exe -Embedding
          1⤵
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:4332
        • C:\Windows\system32\OpenWith.exe
          C:\Windows\system32\OpenWith.exe -Embedding
          1⤵
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:4044

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\RESE2F8.tmp
          Filesize

          1KB

          MD5

          e986489078957731c2ea3239a5d9600b

          SHA1

          fb7fc8c7e1816bd16dda492c4367867bad999dc3

          SHA256

          1285a3f1603b7e4f5a3a428f3093e7c2f35b1e05434bc6a91d56d5098a84558d

          SHA512

          785710be771e9b52d0f8abc1fd74da701bf416926a76f7659dffa190ecc63694feadd65189d8716d66315e751f1e4430f498c18f878228c109b72126d966aec3

          Download Submit

        • C:\Users\Admin\Documents\read_it.txt
          Filesize

          964B

          MD5

          4217b8b83ce3c3f70029a056546f8fd0

          SHA1

          487cdb5733d073a0427418888e8f7070fe782a03

          SHA256

          7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

          SHA512

          2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

          Download Submit

        • C:\Users\Admin\Downloads\test.exe
          Filesize

          23KB

          MD5

          583dc9e87f37dcc1d9b672aa3c90b2f5

          SHA1

          4566dcde18920826276b0699287315142100c553

          SHA256

          8704bcd769164629f1ae99cf16f8573de5ddba77b9df57e2b4a2cd5963707228

          SHA512

          b6f44895e37b83b1bdc650e79e500baff73d744c60f45670d5adc3d6fd050d273c0e9e57d8af456112b05fc4eb9a3657b3a4a8d7a08f1c7594fe5da62319ba2c

          Download Submit

        • \??\c:\Users\Admin\AppData\Local\Temp\4jtjrmlz\4jtjrmlz.0.cs
          Filesize

          31KB

          MD5

          724a6f6c0a4705f052cdc4dd2d51c7d8

          SHA1

          bbd765bf7f43c44a85f0804944e02673bd4b01cc

          SHA256

          03c4dd3c2e4e34572850c66c7dd1333f8002650d604d0c111dafc9a74a660f6c

          SHA512

          af22fe547af095885db79228ec55d70f6f74a608bc0d53f13e523bd58486d3ff3eba9265d8e75a086c3c91da670abdc3f1355a69d57a2735c994c11b2731646b

          Download Submit

        • \??\c:\Users\Admin\AppData\Local\Temp\4jtjrmlz\4jtjrmlz.cmdline
          Filesize

          332B

          MD5

          60c49b426a4385e025f4fce9cf9fa47b

          SHA1

          25b38190fb8cb503b05f43787fe698720113b65b

          SHA256

          dbd6d5decef4c060e40a60264d84e3363ce32cb6ae5989ffabd412d0ccc20ff6

          SHA512

          12b56a87670ccf6263f7e5047cf42acc69afa2bbd1dfbfc8ce1e31162e424649f714cca279fa6812af62002d149c4ffadc8fb1a35c7529fb223c9ce8b488ef9f

          Download Submit

        • \??\c:\Users\Admin\Downloads\CSCDD97E7E7B7DE445B9E8EA3FF2FFDAB.TMP
          Filesize

          1KB

          MD5

          4a8b69d1b2c8695736b8c2273da513dc

          SHA1

          6519bfd357318ebc69831e8c9a12626c5a34dc2e

          SHA256

          d9edfacf147f183b116c4ba680fe1087d13f04fa7dc92ca7e9bc9f2fdbca24b6

          SHA512

          e4bf306c4ff1b6be85fa7824ba7e9c50906e965553fcbcb9debd966220b0328134d99ceedc6d563296332056c243dd310e8fe36e2fee2c3864f7aa67fde225e5

          Download Submit

        • memory/3008-7-0x00007FFF7CB10000-0x00007FFF7D5D1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/3008-22-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-8-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-10-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-11-0x00007FFF7CB10000-0x00007FFF7D5D1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/3008-12-0x00007FFF7CB10000-0x00007FFF7D5D1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/3008-13-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-14-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-15-0x00007FFF7CB10000-0x00007FFF7D5D1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/3008-16-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-17-0x00007FFF7CB10000-0x00007FFF7D5D1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/3008-0-0x00007FFF7CB13000-0x00007FFF7CB15000-memory.dmp

          Filesize

          8KB

          Download

        • memory/3008-23-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-6-0x00007FFF7CB10000-0x00007FFF7D5D1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/3008-5-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-4-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-3-0x00007FFF7CB10000-0x00007FFF7D5D1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/3008-2-0x00007FFF7CB10000-0x00007FFF7D5D1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/3008-1-0x0000000000D10000-0x0000000000D9E000-memory.dmp

          Filesize

          568KB

          Download

        • memory/3008-39-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-53-0x000000001BC20000-0x000000001BDC9000-memory.dmp

          Filesize

          1.7MB

          Download

        • memory/3008-54-0x00007FFF7CB10000-0x00007FFF7D5D1000-memory.dmp

          Filesize

          10.8MB

          Download

        • memory/4360-38-0x0000000000310000-0x000000000031C000-memory.dmp

          Filesize

          48KB

          Download