General

  • Target

    Malware with taskmgr.zip

  • Size

    2.9MB

  • Sample

    240614-w6arkswcll

  • MD5

    a964aeb3e8cf59d3b8708af99731abf4

  • SHA1

    77a9caa0eb747c0d5bba1d2b86dd13537516f849

  • SHA256

    39345b9dc44db0aec3ceb63efa9f4b0bb74753da4fa421745acff9835f50debc

  • SHA512

    9109666afd9cb90a9ba44ef14a9914afcd7749169b2e4a04f6066f470a7a89503ddf90a21adeadd4dfd2056aa66854f99db532824be64c95bc0d94ad7439c79a

  • SSDEEP

    49152:x7yeTYZ5z0vegABI2egr4OecHvD5m33UZRQDRfPapjj6axvkVxureuIiBAkpwESc:xnTYZ5z0WgH234RUI3UrQ1uHlvkxuhLd

Malware Config

Extracted

Family

amadey

Version

4.21

Botnet

0e6740

C2

http://147.45.47.155

Attributes
  • install_dir

    9217037dc9

  • install_file

    explortu.exe

  • strings_key

    8e894a8a4a3d0da8924003a561cfb244

  • url_paths

    /ku4Nor9/index.php

rc4.plain

Extracted

Family

amadey

Version

8254624243

Botnet

e76b71

C2

http://77.91.77.81

Attributes
  • install_dir

    8254624243

  • install_file

    axplong.exe

  • strings_key

    90049e51fabf09df0d6748e0b271922e

  • url_paths

    /Kiru9gu/index.php

rc4.plain

Extracted

Family

redline

Botnet

@LOGSCLOUDYT_BOT

C2

185.172.128.33:8970

Extracted

Family

xworm

Version

5.0

C2

64.226.123.178:6098

Mutex

1z0ENxCLSR3XRSre

Attributes
  • install_file

    USB.exe

aes.plain

Extracted

Family

xworm

Version

3.1

C2

185.91.127.220:7000

200.9.155.204:7000

Mutex

0liuzqSbSYrrf5nM

Attributes
  • install_file

    USB.exe

aes.plain
aes.plain

Extracted

Family

redline

Botnet

0011

C2

185.91.127.219:33455

Extracted

Family

xworm

C2

127.0.0.1:7000

beshomandotestbesnd.run.place:7000

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    cmd.exe

  • telegram

    https://api.telegram.org/bot2128988424:AAEkYnwvOQA95riqRZwlqBxg4GV-odRNOyo/sendMessage?chat_id=966649672

Targets

    • Target

      Malware with taskmgr.zip

    • Size

      2.9MB

    • MD5

      a964aeb3e8cf59d3b8708af99731abf4

    • SHA1

      77a9caa0eb747c0d5bba1d2b86dd13537516f849

    • SHA256

      39345b9dc44db0aec3ceb63efa9f4b0bb74753da4fa421745acff9835f50debc

    • SHA512

      9109666afd9cb90a9ba44ef14a9914afcd7749169b2e4a04f6066f470a7a89503ddf90a21adeadd4dfd2056aa66854f99db532824be64c95bc0d94ad7439c79a

    • SSDEEP

      49152:x7yeTYZ5z0vegABI2egr4OecHvD5m33UZRQDRfPapjj6axvkVxureuIiBAkpwESc:xnTYZ5z0WgH234RUI3UrQ1uHlvkxuhLd

    • Detect PurpleFox Rootkit

      Detect PurpleFox Rootkit.

    • Gh0st RAT payload

    • Gh0strat

      Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

    • PurpleFox

      PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.

    • Drops file in Drivers directory

    • Sets DLL path for service in the registry

    • Sets file execution options in registry

    • Sets service image path in registry

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • 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 file in System32 directory

    • Target

      processhacker-2.39-setup.exe

    • Size

      3.5MB

    • MD5

      b634c2030dcfbff51a9427f7091ee945

    • SHA1

      96793c81fa09c5fe1e5d353b9c12837fa2e12ddd

    • SHA256

      efa43d5920d7306c8b8aab1479d418f74e8e9ddc2078b6f40c1775b6deac33f5

    • SHA512

      9c1eb150aacdbcfc0630a26aa66e210d200bb439621c115775dc70ba07f3be495cf9472b0811ae4728a4f72d6773f09a169458dc5cb4c24e19953ed6ccbed923

    • SSDEEP

      98304:kGdVyVT9nOgmhRWh9/ULkjKxtTGP6VZd2rAcvOSE6Nq:bWT9nO7js/ULRjVZdLSE

    • Amadey

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

    • Detect PurpleFox Rootkit

      Detect PurpleFox Rootkit.

    • Detect Xehook Payload

    • Detect Xworm Payload

    • Gh0st RAT payload

    • Gh0strat

      Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

    • Modifies firewall policy service

    • Modifies security service

    • Phorphiex payload

    • Phorphiex, Phorpiex

      Phorphiex or Phorpiex Malware family which infects systems to distribute other malicious payloads such as ransomware, stealers and cryptominers.

    • PrivateLoader

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

    • PurpleFox

      PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.

    • RedLine

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

    • RedLine payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • UAC bypass

    • Windows security bypass

    • Xehook stealer

      Xehook is an infostealer written in C#.

    • Xworm

      Xworm is a remote access trojan written in C#.

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

    • Modifies boot configuration data using bcdedit

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • Sets DLL path for service in the registry

    • Sets file execution options in registry

    • 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.

    • Drops startup file

    • 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

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Unexpected DNS network traffic destination

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

    • 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

    • 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.

    • An obfuscated cmd.exe command-line is typically used to evade detection.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • 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

Boot or Logon Autostart Execution

8
T1547

Registry Run Keys / Startup Folder

8
T1547.001

Create or Modify System Process

5
T1543

Windows Service

5
T1543.003

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

8
T1547

Registry Run Keys / Startup Folder

8
T1547.001

Create or Modify System Process

5
T1543

Windows Service

5
T1543.003

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

16
T1112

Subvert Trust Controls

2
T1553

Install Root Certificate

2
T1553.004

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

2
T1497

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Unsecured Credentials

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

10
T1012

System Information Discovery

8
T1082

Remote System Discovery

2
T1018

Virtualization/Sandbox Evasion

2
T1497

Process Discovery

1
T1057

Collection

Data from Local System

3
T1005

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

1
T1490

Service Stop

1
T1489

Tasks