General

  • Target

    4f7bb05edfb383b45568b57b070655812cbc2f7cbbc6fe6f772e16dc55c27e93

  • Size

    1.8MB

  • Sample

    240520-18lzvaab21

  • MD5

    cdc65246c0f8b5a8b817385647c65dd2

  • SHA1

    254ed48e117fb89462e1e2c713baad6d2f76fb49

  • SHA256

    4f7bb05edfb383b45568b57b070655812cbc2f7cbbc6fe6f772e16dc55c27e93

  • SHA512

    65f3c526eb906d64bbbd704730e97b0ddfc2c65ae43ac396402b41d04019775aa028d7fe15f46bb82a4fd75498e97d9dadb2b19123e736aea5785d041951e7df

  • SSDEEP

    49152:pn3ZJ5CTaCMUTPNDWp3C3fvsS/MhQmI7v4UI:Bv5C7M8PNDS3CvvihVI7vTI

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://d22hce23hy1ej9.cloudfront.net/load/th.php?a=2836&c=1002

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://d22hce23hy1ej9.cloudfront.net/load/dl.php?id=458&c=1002

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://d22hce23hy1ej9.cloudfront.net/load/dl.php?id=444&c=1002

Extracted

Family

amadey

Version

4.20

Botnet

18befc

C2

http://5.42.96.141

Attributes
  • install_dir

    908f070dff

  • install_file

    explorku.exe

  • strings_key

    b25a9385246248a95c600f9a061438e1

  • url_paths

    /go34ko8/index.php

rc4.plain

Extracted

Family

risepro

C2

147.45.47.126:58709

Extracted

Family

amadey

Version

4.20

Botnet

c767c0

C2

http://5.42.96.7

Attributes
  • install_dir

    7af68cdb52

  • install_file

    axplons.exe

  • strings_key

    e2ce58e78f631ed97d01fe7b70e85d5e

  • url_paths

    /zamo7h/index.php

rc4.plain

Extracted

Family

redline

Botnet

1

C2

185.215.113.67:26260

Targets

    • Target

      4f7bb05edfb383b45568b57b070655812cbc2f7cbbc6fe6f772e16dc55c27e93

    • Size

      1.8MB

    • MD5

      cdc65246c0f8b5a8b817385647c65dd2

    • SHA1

      254ed48e117fb89462e1e2c713baad6d2f76fb49

    • SHA256

      4f7bb05edfb383b45568b57b070655812cbc2f7cbbc6fe6f772e16dc55c27e93

    • SHA512

      65f3c526eb906d64bbbd704730e97b0ddfc2c65ae43ac396402b41d04019775aa028d7fe15f46bb82a4fd75498e97d9dadb2b19123e736aea5785d041951e7df

    • SSDEEP

      49152:pn3ZJ5CTaCMUTPNDWp3C3fvsS/MhQmI7v4UI:Bv5C7M8PNDS3CvvihVI7vTI

    • Amadey

      Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Modifies firewall policy service

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • RisePro

      RisePro stealer is an infostealer distributed by PrivateLoader.

    • UAC bypass

    • Detects executables (downlaoders) containing URLs to raw contents of a paste

    • Detects executables packed with Themida

    • Detects executables packed with or use KoiVM

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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Sets service image path in registry

    • Stops running service(s)

    • 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.

    • Executes dropped EXE

    • Identifies Wine through registry keys

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

    • Loads dropped DLL

    • Modifies system executable filetype association

    • 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.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • 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

    • Enumerates connected drives

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

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • 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.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • 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

PowerShell

1
T1059.001

System Services

2
T1569

Service Execution

2
T1569.002

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

3
T1543

Windows Service

3
T1543.003

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Browser Extensions

1
T1176

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

3
T1543

Windows Service

3
T1543.003

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

8
T1112

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Virtualization/Sandbox Evasion

2
T1497

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

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

10
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

8
T1082

Software Discovery

1
T1518

Security Software Discovery

1
T1518.001

Peripheral Device Discovery

2
T1120

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Impact

Service Stop

1
T1489

Tasks