Overview

overview

10

Static

static

10

7D630EF735...4F.exe

windows7-x64

10

7D630EF735...4F.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    300s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-es
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-eslocale:es-esos:windows10-2004-x64systemwindows
  • submitted
    04-06-2023 20:35

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General

  • Target

    7D630EF735EA9607D50B8BA425DB224FC686B7682A492BAEEBBCD66E92582C4F.exe

  • Size

    42KB

  • MD5

    55e27e760ffb7c153d4b25469ebc9f2b

  • SHA1

    527e3bda1f96cf743eafaabc4a1eb9a3b2f23c25

  • SHA256

    7d630ef735ea9607d50b8ba425db224fc686b7682a492baeebbcd66e92582c4f

  • SHA512

    ef5ce8a2c07035756289cb878274478cb579b74e9906d157a516ced0f773577e65410e7313e428eb27c8b41a900e8fd7e07801f6bf1849b700710cc6903a1c1b

  • SSDEEP

    768:tO1oR//VS1RzK4wbs+D/SIJX+ZZ1SQQwZuIOPzDhLuDFu+OSYNgnGE:tlS1FKnDtkuImhKDFJOSe4

Score
10/10
ransomware

Malware Config

Extracted

Path

C:\Program Files\7-Zip\+README-WARNING+.txt

Ransom Note
::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted. The file structure was not damaged, we did everything possible so that this could not happen. .2. Q: How to recover files? A: If you wish to decrypt your files you will need to pay us. .3. Q: What about guarantees? A: Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will cooperate with us. Its not in our interests. To check the ability of returning files, you can send to us any 2 files with SIMPLE extensions(jpg,xls,doc, etc... not databases!) and low sizes(max 1 mb), we will decrypt them and send back to you. That is our guarantee. .4. Q: How to contact with you? A: You can write us to our mailboxes: octaviaschlinker@gmail.com or mathiasonelna7@gmail.com or lparvan@aol.com .5. Q: How will the decryption process proceed after payment? A: After payment we will send to you our scanner-decoder program and detailed instructions for use. With this program you will be able to decrypt all your encrypted files. .6. Q: If I don�t want to pay bad people like you? A: If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause only we have the private key. In practice - time is much more valuable than money. :::BEWARE::: DON'T try to change encrypted files by yourself! If you will try to use any third party software for restoring your data or antivirus solutions - please make a backup for all encrypted files! Any changes in encrypted files may entail damage of the private key and, as result, the loss all data.
Emails

octaviaschlinker@gmail.com

mathiasonelna7@gmail.com

lparvan@aol.com

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Renames multiple (4341) files with added filename extension

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

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Drops file in System32 directory 6 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 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\7D630EF735EA9607D50B8BA425DB224FC686B7682A492BAEEBBCD66E92582C4F.exe
    "C:\Users\Admin\AppData\Local\Temp\7D630EF735EA9607D50B8BA425DB224FC686B7682A492BAEEBBCD66E92582C4F.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4572
    • C:\Users\Admin\AppData\Local\Temp\7D630EF735EA9607D50B8BA425DB224FC686B7682A492BAEEBBCD66E92582C4F.exe
      "C:\Users\Admin\AppData\Local\Temp\7D630EF735EA9607D50B8BA425DB224FC686B7682A492BAEEBBCD66E92582C4F.exe" n4572
      2⤵
        PID:3984
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4708
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:916
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:2948
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4852
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:628
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:368
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:3360
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:380
      • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
        "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
        1⤵
        • Drops file in System32 directory
        • Checks processor information in registry
        • Enumerates system info in registry
        • Modifies data under HKEY_USERS
        • Suspicious use of SetWindowsHookEx
        PID:4588
      • C:\Windows\System32\rundll32.exe
        C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
        1⤵
          PID:4648

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Initial Access

        Execution

        Command-Line Interface

        1
        T1059

        Persistence

        Privilege Escalation

        Defense Evasion

        File Deletion

        3
        T1107

        Credential Access

        Discovery

        Query Registry

        4
        T1012

        Peripheral Device Discovery

        1
        T1120

        System Information Discovery

        3
        T1082

        Lateral Movement

        Collection

        Exfiltration

        Command and Control

        Impact

        Inhibit System Recovery

        3
        T1490

        Replay Monitor

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        Downloads

        • C:\Program Files\7-Zip\+README-WARNING+.txt
          Filesize

          1KB

          MD5

          2b199454e173051a3dba49b77862567a

          SHA1

          bb0b3a926ec1fde8c49231ea8601dd3227679b73

          SHA256

          5cad42f0d22809afde0e217f0d75e5aede25efbc0304e9f553ebdcef13573e0a

          SHA512

          c7baf54c62aa8b450a9118b185e0d816f7353c31b977756064584dcadf9524c7c4fa082e1009650ba1a5ad7121c9bbe4997ae48c06394cc68f7b05bea2b1e72c

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