Overview

overview

10

Static

static

10

8d50913610...1e.exe

windows7-x64

9

8d50913610...1e.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    4s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-01-2024 23:56

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General

  • Target

    8d5091361064ccf9dea8a658a87f25555cce08089774b628982995218d6b081e.exe

  • Size

    99KB

  • MD5

    c671cc09124f5fdebd6d5ab320cb42d6

  • SHA1

    a4ec9d5ad5d533618d77c01044a100477235f772

  • SHA256

    6d4074b4267582300b8c157634bc1599dd7a79dd80149929cc08c08c04e6b34d

  • SHA512

    4131ceb1b6ee9732bbc2aeaf87dfda198a5f58119ffbee64f88ca8d5a5f73b60fff065c1748b1247c1e6b90dd295857953a71a5d9321a9383b1a789ce79393a2

  • SSDEEP

    1536:4Ij4ZMAim2szHhIv49A08qIPPgBvlmYkw7OOlhIWGYkb+EC3LZ9m7nDofS9Z1Gn:NsvimVzHCfqL1l57hsvYkyEooDgS

Score
9/10
ransomwareupx

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Detects command variations typically used by ransomware 1 IoCs
  • Detects executables containing many references to VEEAM. Observed in ransomware 1 IoCs
  • Detects executables referencing many IR and analysis tools 1 IoCs
  • Renames multiple (166) files with added filename extension

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

    ransomware
  • UPX dump on OEP (original entry point) 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Drops desktop.ini file(s) 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies boot configuration data using bcdedit 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 56 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 16 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\8d5091361064ccf9dea8a658a87f25555cce08089774b628982995218d6b081e.exe
    "C:\Users\Admin\AppData\Local\Temp\8d5091361064ccf9dea8a658a87f25555cce08089774b628982995218d6b081e.exe"
    1⤵
    • Checks computer location settings
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3188
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1856
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:3244
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c wmic SHADOWCOPY DELETE
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1108
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic SHADOWCOPY DELETE
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:660
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } recoveryenabled No
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1720
      • C:\Windows\system32\bcdedit.exe
        bcdedit / set{ default } recoveryenabled No
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:4116
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Windows\system32\bcdedit.exe
        bcdedit / set{ default } bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:1112
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } bootstatuspolicy ignoreallfailures
      2⤵
        PID:560
        • C:\Windows\system32\bcdedit.exe
          bcdedit / set{ default } bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:976
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } recoveryenabled No
        2⤵
          PID:4552
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c wmic SHADOWCOPY DELETE
          2⤵
            PID:2076
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
            2⤵
              PID:1216
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3144
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
            1⤵
              PID:504
            • C:\Windows\system32\vssadmin.exe
              vssadmin.exe delete shadows /all /quiet
              1⤵
              • Interacts with shadow copies
              PID:2444
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic SHADOWCOPY DELETE
              1⤵
                PID:1252
              • C:\Windows\system32\bcdedit.exe
                bcdedit / set{ default } recoveryenabled No
                1⤵
                • Modifies boot configuration data using bcdedit
                PID:3392

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              • C:\ProgramData\Adobe\WhatHappened.txt
                Filesize

                1KB

                MD5

                b05e32b7e78e82f01f6f0c7d1411ee67

                SHA1

                2e1dda46f8561858b378d19a24b839062f794274

                SHA256

                f058bc2a88431119f286f2708751f25449dc1d58e1c87de3bb38aff764c814a8

                SHA512

                6cb7c842a48b9f982ac87280ded95e206e2b9055f9f51ea84f6060470a61a35decbb688650c0d6b7c318df018078af0c0a1afe0ce65db1b460d75ae7800e2d3c

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              • memory/3188-0-0x00007FF6D0C40000-0x00007FF6D0C82000-memory.dmp

                Filesize

                264KB

                Download

              • memory/3188-1443-0x00007FF6D0C40000-0x00007FF6D0C82000-memory.dmp

                Filesize

                264KB

                Download