Overview

overview

10

Static

static

chthonic_2...ir.exe

windows7_x64

10

chthonic_2...ir.exe

windows10_x64

10

Analysis

  • max time kernel
    134s
  • max time network
    47s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    19-07-2020 17:25

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General

  • Target

    chthonic_2.0.6.0.vir.exe

  • Size

    104KB

  • MD5

    e2f95e7cb5c8118b3db4515028addb1c

  • SHA1

    a1285e8adee08135b3bdd778581e60a9d83af523

  • SHA256

    7f12c0d7410edaa780e6b954b5177e9dfec5ad890d58cb64b97d6dca9722fa2d

  • SHA512

    0914ec7846c25e0e4bf858ed6f3bf71963f204af6e62dcdf42f1cb2808ad5b7667bf320f3b8a5e6ba38bc530b73b2c8b544adc267e882de920d034ba3a0d59a1

Score
10/10
evasiontrojanpersistence

Malware Config

Signatures

  • Drops file in Program Files directory 1 IoCs
  • System policy modification 1 TTPs 5 IoCs
    evasion
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs
    evasion
  • Adds policy Run key to start application 2 TTPs 2 IoCs
    persistence
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
    evasiontrojan
  • Disables taskbar notifications via registry modification
    evasion
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • UAC bypass 3 TTPs
    evasiontrojan
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious behavior: MapViewOfSection 60 IoCs
  • Blacklisted process makes network request 8 IoCs
  • Identifies Wine through registry keys 2 TTPs 2 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\chthonic_2.0.6.0.vir.exe
    "C:\Users\Admin\AppData\Local\Temp\chthonic_2.0.6.0.vir.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:896
    • C:\Users\Admin\AppData\Local\Temp\chthonic_2.0.6.0.vir.exe
      "C:\Users\Admin\AppData\Local\Temp\chthonic_2.0.6.0.vir.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious behavior: MapViewOfSection
      • Identifies Wine through registry keys
      PID:1916
      • C:\Windows\SysWOW64\msiexec.exe
        C:\Windows\system32\msiexec.exe
        3⤵
        • Drops file in Program Files directory
        • System policy modification
        • Adds policy Run key to start application
        • Checks whether UAC is enabled
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: RenamesItself
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious behavior: MapViewOfSection
        • Blacklisted process makes network request
        • Identifies Wine through registry keys
        PID:2080

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Modify Registry

4
T1112

Hidden Files and Directories

1
T1158

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

System Information Discovery

1
T1082

Query Registry

1
T1012

Virtualization/Sandbox Evasion

1
T1497

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/1916-2-0x0000000000400000-0x0000000000408000-memory.dmp
    Filesize

    32KB

    Download
  • memory/1916-3-0x000000000040166C-mapping.dmp
    Download
  • memory/2080-4-0x0000000000000000-mapping.dmp
    Download
  • memory/2080-5-0x00000000002A0000-0x00000000002B2000-memory.dmp
    Filesize

    72KB

    Download
  • memory/2080-6-0x00000000002A0000-0x00000000002B2000-memory.dmp
    Filesize

    72KB

    Download