Overview

overview

10

Static

static

3

8c76b7d6-8...71.exe

windows7-x64

10

8c76b7d6-8...71.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    22/07/2024, 05:49

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General

  • Target

    8c76b7d6-8b57-4c29-88c5-ceaf8f3b2271.exe

  • Size

    211KB

  • MD5

    7f3ca0c7b46e6b7a337e06a1235b880a

  • SHA1

    0652be2245707c3146387c4a0ec4bd213ad04e10

  • SHA256

    2665d11ebf0d5123e5df45b6b3fa0b67b07d3cfd6675fe0745fbc0501a8f860f

  • SHA512

    b0257651d4c9bdba8de6317aa66e041c6b7cb049902e2b0d92ea44dc2ff2d8a59a6603907f690ae751775872644a6b0ee96c99a3cfefab0e927dac79eba3f7ab

  • SSDEEP

    3072:owAJkyMS4a+RQ3dTmx0Tth+cySxE+s9WRhP6v8xZduYdwV:RAJeRQ3dT++GnOR/LGV

Score
10/10
ransomwarespywarestealer

Malware Config

Extracted

Path

C:\Program Files (x86)\readme.txt

Ransom Note
Greetings, Your data has been encrypted by Mesmerised Locker as part of a global attack using zero-day exploits. We understand this is stressful and will guide you on recovery. *What Happened:* *Encryption:* Your files are encrypted with ChaCha20, AES-256, and RSA-4096. These methods are used by governments for high-security data. More details: - ChaCha20: wikipedia.org/wiki/Salsa20 - AES-256: wikipedia.org/wiki/Advanced_Encryption_Standard - RSA-4096: wikipedia.org/wiki/RSA_(cryptosystem) *Data Theft:* We have also collected personal data, including messages and sensitive information. *Our Intentions:* *Decryption Offer:* We will decrypt 2-3 files for free to show we can restore your data. *Payment:* We ask for $50 or an equivalent item. This reflects the scale of our operation. *How to Proceed:* 1. *Contact Us:* Use session ID 050126e07b2964020ad7242a12a63a3476f22a3956877fd8a7f2d3a01bb1140759. Download the Session to contact us: getsession.org 2. *Payment:* After payment, we will provide the decryption key and instructions. Payment method discussed on contact *Consequences of Non-Compliance:* *Data Exposure:* If you do not comply, we will share your data with your contacts and possibly make it public. *Data Loss:* Using third-party tools may cause permanent data loss. Our encryption prevents recovery without our key. *System Integrity:* Resetting your PC with a bootable drive or cloud restore will not work. Our bootkits will just stay on your system. More on bootkits: wikipedia.org/wiki/Bootkit Even if you reset your PC, a remote access tool (RAT) and rootkit we installed will let us retain control. Learn more about rootkits: Rootkit: wikipedia.org/wiki/Rootkit *Scam Warning:* Beware of third-party services claiming they can decrypt your data. You can do you own research, it is impossible to decrypt ransomware. Once the payment is recieved the decryptor will be provided instantly. Sincerely, Mesmerised Locker Team

Signatures

  • Renames multiple (8003) files with added filename extension

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

    ransomware
  • Drops startup file 1 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) 46 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • 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\8c76b7d6-8b57-4c29-88c5-ceaf8f3b2271.exe
    "C:\Users\Admin\AppData\Local\Temp\8c76b7d6-8b57-4c29-88c5-ceaf8f3b2271.exe"
    1⤵
    • Drops startup file
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Windows\system32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{114FEB11-1D2C-4EBD-9FE3-460FEDCE7D1C}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2556
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{114FEB11-1D2C-4EBD-9FE3-460FEDCE7D1C}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2576
    • C:\Windows\system32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{DFB62530-39DF-4AF1-BA3F-5C49383B0D41}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2960
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{DFB62530-39DF-4AF1-BA3F-5C49383B0D41}'" delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2020
    • C:\Windows\system32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{F2BDEC03-18F3-4EA9-ABD4-D53CDBF9E0AC}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1848
      • C:\Windows\System32\wbem\WMIC.exe
        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{F2BDEC03-18F3-4EA9-ABD4-D53CDBF9E0AC}'" delete
        3⤵
          PID:2244
      • C:\Windows\system32\cmd.exe
        cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{6F47B8E0-A76F-42B8-80C5-2B902F5E5749}'" delete
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1144
        • C:\Windows\System32\wbem\WMIC.exe
          C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{6F47B8E0-A76F-42B8-80C5-2B902F5E5749}'" delete
          3⤵
            PID:1160
        • C:\Windows\system32\cmd.exe
          cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{021F038D-EF98-4277-807F-D9D2C31761FE}'" delete
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2540
          • C:\Windows\System32\wbem\WMIC.exe
            C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{021F038D-EF98-4277-807F-D9D2C31761FE}'" delete
            3⤵
              PID:2916
          • C:\Windows\system32\cmd.exe
            cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{522CFB70-E966-4631-B951-39079840FC86}'" delete
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2180
            • C:\Windows\System32\wbem\WMIC.exe
              C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{522CFB70-E966-4631-B951-39079840FC86}'" delete
              3⤵
                PID:336
            • C:\Windows\system32\cmd.exe
              cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{39A60542-2909-4674-A9B2-FCD89B71F373}'" delete
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:2796
              • C:\Windows\System32\wbem\WMIC.exe
                C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{39A60542-2909-4674-A9B2-FCD89B71F373}'" delete
                3⤵
                  PID:2980
              • C:\Windows\system32\cmd.exe
                cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{09D614CE-B995-49B2-AD78-718627D30B0D}'" delete
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:2196
                • C:\Windows\System32\wbem\WMIC.exe
                  C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{09D614CE-B995-49B2-AD78-718627D30B0D}'" delete
                  3⤵
                    PID:1644
                • C:\Windows\system32\cmd.exe
                  cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{9A213CE1-2A1D-4404-85E9-A877A57FF56E}'" delete
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:784
                  • C:\Windows\System32\wbem\WMIC.exe
                    C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{9A213CE1-2A1D-4404-85E9-A877A57FF56E}'" delete
                    3⤵
                      PID:2376
                  • C:\Windows\system32\cmd.exe
                    cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{07126393-5C20-4FEC-84EB-08FDE444B0C2}'" delete
                    2⤵
                      PID:1476
                      • C:\Windows\System32\wbem\WMIC.exe
                        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{07126393-5C20-4FEC-84EB-08FDE444B0C2}'" delete
                        3⤵
                          PID:600
                      • C:\Windows\system32\cmd.exe
                        cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{569F095D-1CBC-4EAB-A3CC-4EDACD8A6278}'" delete
                        2⤵
                          PID:2000
                          • C:\Windows\System32\wbem\WMIC.exe
                            C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{569F095D-1CBC-4EAB-A3CC-4EDACD8A6278}'" delete
                            3⤵
                              PID:2172
                          • C:\Windows\system32\cmd.exe
                            cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{25D60D36-2134-4703-B70F-C1E5670E2758}'" delete
                            2⤵
                              PID:2212
                              • C:\Windows\System32\wbem\WMIC.exe
                                C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{25D60D36-2134-4703-B70F-C1E5670E2758}'" delete
                                3⤵
                                  PID:1840
                              • C:\Windows\system32\cmd.exe
                                cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{E62387E8-4164-4550-873D-246FB783FDA4}'" delete
                                2⤵
                                  PID:2056
                                  • C:\Windows\System32\wbem\WMIC.exe
                                    C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{E62387E8-4164-4550-873D-246FB783FDA4}'" delete
                                    3⤵
                                      PID:2892
                                  • C:\Windows\system32\cmd.exe
                                    cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{EBF372D1-ABDA-4550-BCFA-E589781243CB}'" delete
                                    2⤵
                                      PID:1056
                                      • C:\Windows\System32\wbem\WMIC.exe
                                        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{EBF372D1-ABDA-4550-BCFA-E589781243CB}'" delete
                                        3⤵
                                          PID:1356
                                      • C:\Windows\system32\cmd.exe
                                        cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{223604F6-39C9-4351-83D1-90EEE67EC572}'" delete
                                        2⤵
                                          PID:1032
                                          • C:\Windows\System32\wbem\WMIC.exe
                                            C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{223604F6-39C9-4351-83D1-90EEE67EC572}'" delete
                                            3⤵
                                              PID:1508
                                          • C:\Windows\system32\cmd.exe
                                            cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{E3902E7F-7A32-4261-A3EE-B17FE1936361}'" delete
                                            2⤵
                                              PID:804
                                              • C:\Windows\System32\wbem\WMIC.exe
                                                C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{E3902E7F-7A32-4261-A3EE-B17FE1936361}'" delete
                                                3⤵
                                                  PID:1800
                                              • C:\Windows\system32\cmd.exe
                                                cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{7CD00F17-C743-4154-B479-2E288FF81CB4}'" delete
                                                2⤵
                                                  PID:2500
                                                  • C:\Windows\System32\wbem\WMIC.exe
                                                    C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{7CD00F17-C743-4154-B479-2E288FF81CB4}'" delete
                                                    3⤵
                                                      PID:1640
                                                  • C:\Windows\system32\cmd.exe
                                                    cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{47BC8E53-5A59-4C7C-AEF0-C0F1C41CFCA7}'" delete
                                                    2⤵
                                                      PID:1936
                                                      • C:\Windows\System32\wbem\WMIC.exe
                                                        C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{47BC8E53-5A59-4C7C-AEF0-C0F1C41CFCA7}'" delete
                                                        3⤵
                                                          PID:1856
                                                    • C:\Windows\system32\vssvc.exe
                                                      C:\Windows\system32\vssvc.exe
                                                      1⤵
                                                      • Suspicious use of AdjustPrivilegeToken
                                                      PID:2672

                                                    Network

                                                    MITRE ATT&CK Enterprise v15

                                                    Replay Monitor

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                                                    Downloads

                                                    • C:\Program Files (x86)\readme.txt
                                                      Filesize

                                                      1KB

                                                      MD5

                                                      256e4513af0f928e5dd4ae305592b0a6

                                                      SHA1

                                                      2d8c8cd6a889b10a4c4c6bcd10c222287b3fc432

                                                      SHA256

                                                      a662704fdde15c21a838efe54deb65ed905c1bfd47cdde74299253367adb7f42

                                                      SHA512

                                                      71f8602f6cf2989552dafe5a9754e6117e4eaa8e8a6023f1cc34b91ea207174d60415c472d92579f0ce4360dd20ee377dafa1e048cf2e72581649f94db15da62

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