Overview

overview

10

Static

static

10

0A6172B017F62EAA.exe

windows7-x64

10

0A6172B017F62EAA.exe

windows10-2004-x64

10

2891E1D4BAC70EBA.exe

windows7-x64

10

2891E1D4BAC70EBA.exe

windows10-2004-x64

10

3472CB2D1AB89AAB.exe

windows7-x64

10

3472CB2D1AB89AAB.exe

windows10-2004-x64

10

613788884CE0093F.exe

windows7-x64

10

613788884CE0093F.exe

windows10-2004-x64

10

7189AED8B8AE6568.exe

windows7-x64

10

7189AED8B8AE6568.exe

windows10-2004-x64

10

CC3B1F89FAA517E4.exe

windows7-x64

10

CC3B1F89FAA517E4.exe

windows10-2004-x64

10

F5657AC3DC58DC8C.exe

windows7-x64

10

F5657AC3DC58DC8C.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    122s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14-11-2024 13:19

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General

  • Target

    2891E1D4BAC70EBA.exe

  • Size

    137KB

  • MD5

    c04dadf78f2813750900fa54863fb2b7

  • SHA1

    8575e9d6f980b53ea13c37053aa2d55691bfe3e0

  • SHA256

    207a249e3c4359548b9ff264cac31d09c95d626d0e4835c081d8afbb732bac4f

  • SHA512

    20baf3958a55df7fe0196d300809afd2c4d4408c4e08db21f5ed6a1b6d21fcb09eea081813cf2b5ba60d745f745db043d2d2d9132da3ea565306402247b43372

  • SSDEEP

    3072:GLIQ8YzXEMZK1A2czbFk58x+o+EFz9/t2f65q8hv2bIoKb:GstYrEMw6Bxk5zOFNtgJKCUb

Score
10/10
defense_evasiondiscoveryexecutionimpactransomwarespywarestealer

Malware Config

Extracted

Path

C:\ProgramData\biobio ransmoware.txt

Ransom Note
kasper Ransmoware ATTENTION! At the moment, your system is not protected. We can fix itand restore files. To get started, send a file to decrypt trial. You can trust us after opening the test file. 2.Do not use free programs to unlock. To restore the system write to both : [email protected] and [email protected] Telegram id:@biobiorans Your Decryption ID: 2891E1D4BAC70EBA

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (9123) files with added filename extension

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

    ransomware
  • Reads user/profile data of web browsers 3 TTPs

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

    spywarestealer
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Interacts with shadow copies 3 TTPs 2 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 14 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\2891E1D4BAC70EBA.exe
    "C:\Users\Admin\AppData\Local\Temp\2891E1D4BAC70EBA.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2348
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2960
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2228
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2504
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2672
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2024

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\biobio ransmoware.txt
    Filesize

    402B

    MD5

    91fa1053207971e936e6bbad0c7e8c27

    SHA1

    61a6300d327ae6eb276c6143f65a58c8f269a67e

    SHA256

    f26d98cae64be561f1260f5cd1c2974a6dce9ffca484461b985ae1107198848d

    SHA512

    b2794993d695cb6950eaa65eecd44dfd4f8ee297dfbd0ef26532fa9f60639c466bacd18e557798e3e28535f4812f1e928bd4862d6bc39a3f014465836d88b832

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