Overview

overview

9

Static

static

3

83cb5e8b74...f2.exe

windows7-x64

1

83cb5e8b74...f2.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    137s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/10/2024, 13:31

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General

  • Target
    83cb5e8b7455fcb3b6c2d45269b08b3ae003dfed4ce8ca942cd007c1ebf17cf2.exe
  • Size 53KB
  • Sample241023-qsj57ssenh
  • SHA256 83cb5e8b7455fcb3b6c2d45269b08b3ae003dfed4ce8ca942cd007c1ebf17cf2
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
defense_evasionevasionexecutionimpactransomwarespywarestealer

Malware Config

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (236) files with added filename extension

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

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 3 TTPs

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

    spywarestealer
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 3 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 10 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\83cb5e8b7455fcb3b6c2d45269b08b3ae003dfed4ce8ca942cd007c1ebf17cf2.exe
    "C:\Users\Admin\AppData\Local\Temp\83cb5e8b7455fcb3b6c2d45269b08b3ae003dfed4ce8ca942cd007c1ebf17cf2.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4828
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe Delete Shadows /All /Quiet & bcdedit /set {default} recoveryenabled No & bcdedit /set {default} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1048
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe Delete Shadows /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:3708
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} recoveryenabled No
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:4548
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:448
    • C:\Windows\System32\notepad.exe
      "C:\Windows\System32\notepad.exe" Important.txt
      2⤵
        PID:2680
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3104

    Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          Important.txt
          • Path C:\Users\Admin\AppData\Local\Temp\Important.txt
          • Size 837B
          • SHA256 4abcb9690773d246b2f445be3b9fcb5588b53a223d3dd4bb0e1009000d839cb6
          • MD5 SHA1 SHA512
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