Overview

overview

8

Static

static

chthonic_2...ir.exe

windows7_x64

chthonic_2...ir.exe

windows10_x64

Analysis

  • max time kernel
    17s
  • max time network
    18s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    19-07-2020 19:52

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Errors

Reason
Machine shutdown
Report Analysis Logs

General

  • Target

    chthonic_2.23.18.23.vir.exe

  • Size

    1.0MB

  • MD5

    1d4f512ea3240231b59dcd026d61b789

  • SHA1

    1f53488f5638b61345fa65304f3090125d1866c6

  • SHA256

    742a1d6f3569a67d95732295d491afc5025548240a7671ea4741936f0106f4bc

  • SHA512

    9e474fb0305c7ca88736e094409ecfd5ef8efa00f5159e6923a7c780ead7794392b35f341631f2c47105f8e239d129ace03e79ca2504e04878932144b127af13

Score
8/10
ransomwarebootkitpersistence

Malware Config

Signatures

  • Suspicious use of AdjustPrivilegeToken 111 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Modifies WinLogon to allow AutoLogon 2 TTPs 1 IoCs

    Enables rebooting of the machine without requiring login credentials.

    ransomwarebootkit
  • Modifies data under HKEY_USERS 15 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Loads dropped DLL 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\chthonic_2.23.18.23.vir.exe
    "C:\Users\Admin\AppData\Local\Temp\chthonic_2.23.18.23.vir.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Loads dropped DLL
    • Suspicious behavior: GetForegroundWindowSpam
    PID:3100
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x0 /state0:0xa3ac8855 /state1:0x41c64e6d
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Modifies WinLogon to allow AutoLogon
    • Modifies data under HKEY_USERS
    PID:3840

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads