General

  • Target

    b1bf0f6717341cb605ebf48e85805282b77e5a3d610f211b90e4ec726b448331

  • Size

    383KB

  • Sample

    240418-22esmahd84

  • MD5

    81f2e982687c695ee0bbadf147feca3b

  • SHA1

    b33a15b47c3b99c65f2277562a928bf9ce9dabf7

  • SHA256

    b1bf0f6717341cb605ebf48e85805282b77e5a3d610f211b90e4ec726b448331

  • SHA512

    16461398006e12c7acc47ae87859bc4567405a7fdca2e3d13863cf14b424036c1703d882f30a3e4aa62a2cec9d8c994b6fa823ba8250ec0e6ba35f52ae2ecf05

  • SSDEEP

    6144:kz00wubhcFv7g9X7wkDStegoIG2sJnuhLvdHVpHBm/F0kpJVdVpftj7XfLT:kzhBqFv7g9kBVG2ACLvd1pBmN3pJ5plX

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.209

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Targets

    • Target

      b1bf0f6717341cb605ebf48e85805282b77e5a3d610f211b90e4ec726b448331

    • Size

      383KB

    • MD5

      81f2e982687c695ee0bbadf147feca3b

    • SHA1

      b33a15b47c3b99c65f2277562a928bf9ce9dabf7

    • SHA256

      b1bf0f6717341cb605ebf48e85805282b77e5a3d610f211b90e4ec726b448331

    • SHA512

      16461398006e12c7acc47ae87859bc4567405a7fdca2e3d13863cf14b424036c1703d882f30a3e4aa62a2cec9d8c994b6fa823ba8250ec0e6ba35f52ae2ecf05

    • SSDEEP

      6144:kz00wubhcFv7g9X7wkDStegoIG2sJnuhLvdHVpHBm/F0kpJVdVpftj7XfLT:kzhBqFv7g9kBVG2ACLvd1pBmN3pJ5plX

    • Detect ZGRat V1

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • Modifies firewall policy service

    • Stealc

      Stealc is an infostealer written in C++.

    • Windows security bypass

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Modifies boot configuration data using bcdedit

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • Possible attempt to disable PatchGuard

      Rootkits can use kernel patching to embed themselves in an operating system.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • Windows security modification

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops Chrome extension

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    • Manipulates WinMon driver.

      Roottkits write to WinMon to hide PIDs from being detected.

    • Manipulates WinMonFS driver.

      Roottkits write to WinMonFS to hide directories/files from being detected.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

5
T1112

Impair Defenses

4
T1562

Disable or Modify Tools

2
T1562.001

Disable or Modify System Firewall

1
T1562.004

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

7
T1012

System Information Discovery

7
T1082

Peripheral Device Discovery

2
T1120

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

1
T1490

Tasks