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Analysis

  • max time kernel
    117s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    01/02/2024, 05:40

General

  • Target

    84a12b237c8acc8fc9008da6c48f9a2dffd9feaa2f283968d420250235e2fb34.exe

  • Size

    99KB

  • MD5

    bea647bc314248d390f14df1aad251b0

  • SHA1

    27697991ccd3a76a38ab7ae2420162627ea2a69b

  • SHA256

    ac1aa0426969aa4f3c3303ccbdfba83047cf68e01401e04e8028006a2ddb6aab

  • SHA512

    c491419e885bcac5b75456bab87ed4fbb2ad02802b0d314dda7a725c236638ad2b223a80b6856ec1e8e09360bf25b99141891c56211abbb7c1667dacb4361a27

  • SSDEEP

    1536:BIj43TYRX0Y9iFAK0E+4LAyKfPKHDysmOIzSw63BtuwVZY9n:QKTYRX0M/BCAyKXmczSw63zq

Score
9/10

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Detects command variations typically used by ransomware 3 IoCs
  • Detects executables containing many references to VEEAM. Observed in ransomware 3 IoCs
  • Detects executables referencing many IR and analysis tools 3 IoCs
  • Renames multiple (322) files with added filename extension

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

  • UPX dump on OEP (original entry point) 4 IoCs
  • UPX packed file 4 IoCs

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

  • Drops desktop.ini file(s) 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Modifies boot configuration data using bcdedit 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 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.

  • Modifies Control Panel 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\84a12b237c8acc8fc9008da6c48f9a2dffd9feaa2f283968d420250235e2fb34.exe
    "C:\Users\Admin\AppData\Local\Temp\84a12b237c8acc8fc9008da6c48f9a2dffd9feaa2f283968d420250235e2fb34.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2008
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2812
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2816
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c wmic SHADOWCOPY DELETE
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2264
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic SHADOWCOPY DELETE
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:548
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2784
      • C:\Windows\system32\bcdedit.exe
        bcdedit / set{ default } bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2872
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } recoveryenabled No
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2696
      • C:\Windows\system32\bcdedit.exe
        bcdedit / set{ default } recoveryenabled No
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2884
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2344
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:572
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c wmic SHADOWCOPY DELETE
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1032
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic SHADOWCOPY DELETE
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1828
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:324
      • C:\Windows\system32\bcdedit.exe
        bcdedit / set{ default } bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2792
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c bcdedit / set{ default } recoveryenabled No
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2992
      • C:\Windows\system32\bcdedit.exe
        bcdedit / set{ default } recoveryenabled No
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:1516
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1988

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Adobe\Acrobat\9.0\WhatHappened.txt

    Filesize

    1KB

    MD5

    b05e32b7e78e82f01f6f0c7d1411ee67

    SHA1

    2e1dda46f8561858b378d19a24b839062f794274

    SHA256

    f058bc2a88431119f286f2708751f25449dc1d58e1c87de3bb38aff764c814a8

    SHA512

    6cb7c842a48b9f982ac87280ded95e206e2b9055f9f51ea84f6060470a61a35decbb688650c0d6b7c318df018078af0c0a1afe0ce65db1b460d75ae7800e2d3c

  • memory/2008-0-0x000000013F130000-0x000000013F172000-memory.dmp

    Filesize

    264KB

  • memory/2008-201-0x000000013F130000-0x000000013F172000-memory.dmp

    Filesize

    264KB

  • memory/2008-549-0x000000013F130000-0x000000013F172000-memory.dmp

    Filesize

    264KB

  • memory/2008-553-0x000000013F130000-0x000000013F172000-memory.dmp

    Filesize

    264KB