Overview

overview

7

Static

static

1

cylance_ra...in.exe

windows7-x64

6

cylance_ra...in.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    161s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-03-2023 00:28

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    cylance_ransomware_Windows-sample.exe.bin.exe

  • Size

    151KB

  • MD5

    31ed39e13ae9da7fa610f85b56838dde

  • SHA1

    ff602997ce7bdd695a282bd373daf57bea7a051f

  • SHA256

    7a5e813ec451cde49346d7e18aca31065846cafe52d88d08918a297196a6a49f

  • SHA512

    199d70b70636555fbe753e83662cc672b5b06428050229856e9912488037cb4dae34a0766c3fcc560afd8fb07a4dcb5cfd8435a0fe3db86484a7929218cab5ee

  • SSDEEP

    3072:lAMP+TYgJWo6QD6ivAFvvYknplbZVaX6TEQZwRNfysqdoTPwum3n:OZNMnQFvM/lbbHTFZw/fLm3n

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Enumerates connected drives 3 TTPs 25 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). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 6 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\cylance_ransomware_Windows-sample.exe.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\cylance_ransomware_Windows-sample.exe.bin.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2188
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c SCHTASKS.exe /Create /RU "NT AUTHORITY\SYSTEM" /sc onstart /TN "Windows Update BETA" /TR "C:\Users\Admin\AppData\Local\Temp\cylance_ransomware_Windows-sample.exe.bin.exe" /F
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3456
      • C:\Windows\SysWOW64\schtasks.exe
        SCHTASKS.exe /Create /RU "NT AUTHORITY\SYSTEM" /sc onstart /TN "Windows Update BETA" /TR "C:\Users\Admin\AppData\Local\Temp\cylance_ransomware_Windows-sample.exe.bin.exe" /F
        3⤵
        • Creates scheduled task(s)
        PID:1612
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4964

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\CYLANCE_README.txt
    Filesize

    1KB

    MD5

    e7755142780934677f475cc1a364b48f

    SHA1

    8e3cf11dba721ae4e3176aaf54d4e3da4405cfb1

    SHA256

    f77a83cd053dd5fb8abb66a644e8bbb8b08ad3caa1f63bf97a29c80a27a3f6ed

    SHA512

    084cb42fc9607b6be0c7c7dba129886778de9d3b876b7dabd6705b5f802e1e8a8fbb91aac97d231687c6ed12bc4dbe926e783cc8e77bdc1bb636263dd7b064da

    Download Submit