Overview

overview

10

Static

static

chthonic_2...ir.exe

windows7_x64

10

chthonic_2...ir.exe

windows10_x64

10

Analysis

  • max time kernel
    124s
  • max time network
    130s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    19-07-2020 19:42

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General

  • Target

    chthonic_2.0.8.1.vir.exe

  • Size

    217KB

  • MD5

    c4b802049dbdf2bb8a299d68715fac43

  • SHA1

    177aeba07cecfbffb1697e051a9d5b920965813a

  • SHA256

    cc841ea2d1abc98b1e89294c3a0dbef1b04e58b4c9b6f4b0f9ad33adef1d1309

  • SHA512

    3f93115f2fd801a427be5f0abf6880793e85d71c60df14c0e02db14a8548781b9811c689384c0c9fc706d5522e6b3158270e49106acad5fa522f06ccf046747a

Score
10/10
evasiontrojanpersistence

Malware Config

Signatures

  • Drops file in Program Files directory 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
    evasiontrojan
  • Suspicious use of WriteProcessMemory 3 IoCs
  • UAC bypass 3 TTPs
    evasiontrojan
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs
    evasion
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Blacklisted process makes network request 8 IoCs
  • System policy modification 1 TTPs 5 IoCs
    evasion
  • Suspicious behavior: RenamesItself 1 IoCs
  • Disables taskbar notifications via registry modification
    evasion
  • 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
  • Suspicious behavior: MapViewOfSection 58 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\chthonic_2.0.8.1.vir.exe
    "C:\Users\Admin\AppData\Local\Temp\chthonic_2.0.8.1.vir.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Identifies Wine through registry keys
    • Suspicious behavior: MapViewOfSection
    PID:792
    • C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\system32\msiexec.exe
      2⤵
      • Drops file in Program Files directory
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Blacklisted process makes network request
      • System policy modification
      • Suspicious behavior: RenamesItself
      • Identifies Wine through registry keys
      • Suspicious behavior: MapViewOfSection
      • Adds policy Run key to start application
      PID:3740

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

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

4
T1112

Hidden Files and Directories

1
T1158

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/3740-0-0x0000000000000000-mapping.dmp
    Download
  • memory/3740-1-0x00000000010F0000-0x0000000001102000-memory.dmp
    Filesize

    72KB

    Download
  • memory/3740-2-0x00000000010F0000-0x0000000001102000-memory.dmp
    Filesize

    72KB

    Download