General

  • Target

    2aca1abc45a264170f1e9dad15de072ed216b3f56e79f2a721da170c37f1d53d

  • Size

    561KB

  • Sample

    240418-2dta4shf4t

  • MD5

    46a804d527cc255bad3c068d588bff95

  • SHA1

    72429d34eef9986b3ad14dce58416c9c5753438a

  • SHA256

    2aca1abc45a264170f1e9dad15de072ed216b3f56e79f2a721da170c37f1d53d

  • SHA512

    2a3f478451930aa56bc019155a08c1c130f7499b942cf9c01c7809f43b4662010d061fd5b7c10e3c949e9611147b5893db12a59a20e17b3207752b2d7d36a8bc

  • SSDEEP

    12288:mj3ByhBS4gUqbBy2O2oQ26EnG/Q7n+chJ:mbBQBSVU52O2oQYG/2n+chJ

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.209

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Targets

    • Target

      2aca1abc45a264170f1e9dad15de072ed216b3f56e79f2a721da170c37f1d53d

    • Size

      561KB

    • MD5

      46a804d527cc255bad3c068d588bff95

    • SHA1

      72429d34eef9986b3ad14dce58416c9c5753438a

    • SHA256

      2aca1abc45a264170f1e9dad15de072ed216b3f56e79f2a721da170c37f1d53d

    • SHA512

      2a3f478451930aa56bc019155a08c1c130f7499b942cf9c01c7809f43b4662010d061fd5b7c10e3c949e9611147b5893db12a59a20e17b3207752b2d7d36a8bc

    • SSDEEP

      12288:mj3ByhBS4gUqbBy2O2oQ26EnG/Q7n+chJ:mbBQBSVU52O2oQYG/2n+chJ

    • 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++.

    • UAC bypass

    • Windows security bypass

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • 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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Windows security modification

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

    • Checks whether UAC is enabled

    • Drops Chrome extension

    • Drops desktop.ini file(s)

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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 NtSetInformationThreadHideFromDebugger

    • 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

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

7
T1112

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

5
T1562

Disable or Modify Tools

3
T1562.001

Disable or Modify System Firewall

1
T1562.004

Virtualization/Sandbox Evasion

1
T1497

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

8
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

8
T1082

Peripheral Device Discovery

2
T1120

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks