Resubmissions

03/03/2024, 09:49

240303-ltql6ahb9510

01/02/2024, 05:28

240201-f6h5ysebhk10

Analysis

  • max time kernel
    649s
  • max time network
    1725s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    03/03/2024, 09:49

General

  • Target
    03a24130a308900d97f520ccec6ae421bee265ddbad5d600fdac4e56f8d2b23d.exe
  • Size 26KB
  • Sample240303-ltql6ahb95
  • SHA256 f489bf6a1174808559dd88bfa808f72f9d2523b47ab96655715f297ac3cfe0f0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt

  • 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.

  • Chaos Ransomware 3 IoCs
  • Renames multiple (173) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops desktop.ini file(s) 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\03a24130a308900d97f520ccec6ae421bee265ddbad5d600fdac4e56f8d2b23d.exe
    "C:\Users\Admin\AppData\Local\Temp\03a24130a308900d97f520ccec6ae421bee265ddbad5d600fdac4e56f8d2b23d.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2904
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2156
      • 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:2412
  • C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\PopSplit.hta"
    1⤵
    • Modifies Internet Explorer settings
    PID:1852
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1864
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6729758,0x7fef6729768,0x7fef6729778
      2⤵
        PID:568
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1184 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:2
        2⤵
          PID:1668
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1504 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:8
          2⤵
            PID:1992
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1604 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:8
            2⤵
              PID:1680
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2272 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:1
              2⤵
                PID:2552
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2308 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:1
                2⤵
                  PID:2432
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1492 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:2
                  2⤵
                    PID:2920
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1176 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:1
                    2⤵
                      PID:624
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3636 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:8
                      2⤵
                        PID:672
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --mojo-platform-channel-handle=1140 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:1
                        2⤵
                          PID:2112
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --mojo-platform-channel-handle=1200 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:1
                          2⤵
                            PID:2596
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3380 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:8
                            2⤵
                              PID:1612
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --mojo-platform-channel-handle=3412 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:1
                              2⤵
                                PID:3012
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=audio.mojom.AudioService --lang=en-US --service-sandbox-type=audio --mojo-platform-channel-handle=3356 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:8
                                2⤵
                                  PID:784
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3760 --field-trial-handle=1208,i,10440933331454291161,6808450954611698866,131072 /prefetch:8
                                  2⤵
                                    PID:1660
                                • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                                  "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                                  1⤵
                                    PID:876
                                  • C:\Windows\system32\AUDIODG.EXE
                                    C:\Windows\system32\AUDIODG.EXE 0x540
                                    1⤵
                                      PID:2492

                                    Network

                                          MITRE ATT&CK Enterprise v15

                                          Replay Monitor

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                                          Downloads

                                          94308059B57B3142E455B38A6EB92015

                                          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
                                          • Size 67KB
                                          • SHA256 b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78
                                          • MD5 SHA1 SHA512 SSDEEP

                                          94308059B57B3142E455B38A6EB92015

                                          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                                          • Size 344B
                                          • SHA256 839c97b34c05423c2222e01fc80bf3b3d3b948fbb30f01072905f88ffd475f66
                                          • MD5 SHA1 SHA512

                                          read_it.txt

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt
                                          • Size 964B
                                          • SHA256 7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
                                          • MD5 SHA1 SHA512

                                          f_000001

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_000001
                                          • Size 195KB
                                          • SHA256 367ef9ec8dc07f84fed51cac5c75dc1ac87688bbf8f5da8e17655e7917bd7b69
                                          • MD5 SHA1 SHA512 SSDEEP

                                          the-real-index

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Code Cache\js\index-dir\the-real-index
                                          • Size 168B
                                          • SHA256 b910976a756d188794bf693ed2b64e539ae1ad02bf765fe1b716132fb51afce3
                                          • MD5 SHA1 SHA512

                                          data_1

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1
                                          • Size 264KB
                                          • SHA256 b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec
                                          • MD5 SHA1 SHA512 SSDEEP

                                          Network Persistent State

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                                          • Size 1KB
                                          • SHA256 c75cc98356101f745531d4d8523a971cec33affe73defc07b0a4001f35d0327b
                                          • MD5 SHA1 SHA512

                                          Network Persistent State

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                                          • Size 2KB
                                          • SHA256 5aee90fde7fa875e84cf4ccb148cea928ce12e13be80dc5d6eef7e80d1ffcc3a
                                          • MD5 SHA1 SHA512

                                          Network Persistent State

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                                          • Size 2KB
                                          • SHA256 ac0513c34622953f0a905e747504a3e28d7c68d8ab2f205e905a72a4fa70b3bd
                                          • MD5 SHA1 SHA512

                                          TransportSecurity

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                                          • Size 526B
                                          • SHA256 ec3545d5b16efe4a010176b9726db7087b1bcec7f0cb366a73074f9131b77c0f
                                          • MD5 SHA1 SHA512

                                          TransportSecurity

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                                          • Size 690B
                                          • SHA256 b3c240f7f1a642e9114127fa176b38c4dcc383703bb6065b4e0b96b94c27c635
                                          • MD5 SHA1 SHA512

                                          TransportSecurity

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                                          • Size 361B
                                          • SHA256 f979e0060b8802cfde70bb350590d8bd77b4595ca8a2e2608d383f2dd5787634
                                          • MD5 SHA1 SHA512

                                          TransportSecurity

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                                          • Size 361B
                                          • SHA256 2de582ac1ac317b0cc2bece9fdd8c6f45fd44bfa2be4e324eb386d2286714a4f
                                          • MD5 SHA1 SHA512

                                          TransportSecurity

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                                          • Size 690B
                                          • SHA256 d111447b8d82e141cecdc1dd987f031ebda0a6a5699b04f9aaa537bb7703f78c
                                          • MD5 SHA1 SHA512

                                          Preferences

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                          • Size 6KB
                                          • SHA256 b9d9fdeea1a724c1ffcf52d7109058eb1a1e7deb30e7a4a6a942bf7a2405ddc4
                                          • MD5 SHA1 SHA512 SSDEEP

                                          Preferences

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                          • Size 5KB
                                          • SHA256 7d7e383485b2fe673b9382ca40ff89a7859e4441a2d3c663608e8215676de4fe
                                          • MD5 SHA1 SHA512 SSDEEP

                                          Preferences

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                          • Size 5KB
                                          • SHA256 64c8cf4f17a41965ff6423d185ca7eb77367a982d1cdd39d70af53579846fb42
                                          • MD5 SHA1 SHA512 SSDEEP

                                          000007.dbtmp

                                          • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp
                                          • Size 16B
                                          • SHA256 8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa
                                          • MD5 SHA1 SHA512

                                          Tar9831.tmp

                                          • Path C:\Users\Admin\AppData\Local\Temp\Tar9831.tmp
                                          • Size 175KB
                                          • SHA256 a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22
                                          • MD5 SHA1 SHA512 SSDEEP

                                          ImportWrite.wmv

                                          • Path C:\Users\Admin\AppData\Roaming\ImportWrite.wmv
                                          • Size 1B
                                          • SHA256 8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
                                          • MD5 SHA1 SHA512

                                          svchost.exe

                                          • Path C:\Users\Admin\AppData\Roaming\svchost.exe
                                          • Size 26KB
                                          • SHA256 f489bf6a1174808559dd88bfa808f72f9d2523b47ab96655715f297ac3cfe0f0
                                          • MD5 SHA1 SHA512 SSDEEP

                                          memory/2156-888-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp

                                          memory/2156-889-0x0000000001F50000-0x0000000001FD0000-memory.dmp

                                          memory/2156-72-0x0000000001F50000-0x0000000001FD0000-memory.dmp

                                          memory/2156-7-0x0000000000320000-0x000000000032C000-memory.dmp

                                          memory/2156-9-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp

                                          memory/2904-0-0x0000000001380000-0x000000000138C000-memory.dmp

                                          memory/2904-8-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp

                                          memory/2904-1-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp