Windows Analysis Report DW1VgsgHNU.exe

Overview

General Information

Sample Name: DW1VgsgHNU.exe
Analysis ID: 491400
MD5: b30b9c1d23026ff24f234a07a557dc83
SHA1: 044ceea8b2fb554e2fdd7bcf4d695dded3a58d3b
SHA256: c54b1a3af48ef7f70434b9e90c33b4bcdccfbd20339d8164e34957890c67f888
Tags: exeRemcosRAT
Infos:

Most interesting Screenshot:

Detection

GuLoader Remcos
Score: 100
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Found malware configuration
Potential malicious icon found
Multi AV Scanner detection for submitted file
GuLoader behavior detected
Yara detected Remcos RAT
Yara detected GuLoader
Hides threads from debuggers
Tries to detect Any.run
C2 URLs / IPs found in malware configuration
Machine Learning detection for sample
Uses dynamic DNS services
Uses 32bit PE files
Sample file is different than original file name gathered from version info
PE file contains strange resources
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Detected TCP or UDP traffic on non-standard ports
Internet Provider seen in connection with other malware
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to call native functions
Uses Microsoft's Enhanced Cryptographic Provider
Creates a process in suspended mode (likely to inject code)
IP address seen in connection with other malware
Abnormal high CPU Usage

Classification

AV Detection:

barindex
Found malware configuration
Source: 00000019.00000002.767385154.0000000000948000.00000004.00000020.sdmp Malware Configuration Extractor: Remcos {"Host:Port:Password": "dyn-wave.duckdns.org:1144:1dyn-wave.duckdns.org:2404:0", "Assigned name": "RemoteHost_NEW", "Connect interval": "1", "Install flag": "Disable", "Setup HKCU\\Run": "Enable", "Setup HKLM\\Run": "Disable", "Install path": "AppData", "Copy file": "remcos.exe", "Startup value": "Remcos", "Hide file": "Disable", "Mutex": "Remcos-2LBKGP", "Keylog flag": "0", "Keylog path": "AppData", "Keylog file": "logs.dat", "Keylog crypt": "Disable", "Hide keylog file": "Disable", "Screenshot flag": "Disable", "Screenshot time": "10", "Take Screenshot option": "Disable", "Take screenshot title": "notepad;solitaire;", "Take screenshot time": "5", "Screenshot path": "AppData", "Screenshot file": "Screenshots", "Screenshot crypt": "Disable", "Mouse option": "Disable", "Delete file": "Disable", "Audio record time": "5", "Audio path": "AppData", "Audio folder": "MicRecords", "Connect delay": "0", "Copy folder": "Remcos", "Keylog folder": "remcos", "Keylog file max size": "20000"}
Source: 00000001.00000002.499884696.00000000005A0000.00000040.00000001.sdmp Malware Configuration Extractor: GuLoader {"Payload URL": "http://dypage.duckdns.org/remcos_d_QUBXVO174"}
Multi AV Scanner detection for submitted file
Source: DW1VgsgHNU.exe Virustotal: Detection: 20% Perma Link
Yara detected Remcos RAT
Source: Yara match File source: 00000019.00000002.767385154.0000000000948000.00000004.00000020.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: DW1VgsgHNU.exe PID: 2800, type: MEMORYSTR
Machine Learning detection for sample
Source: DW1VgsgHNU.exe Joe Sandbox ML: detected

Cryptography:

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Uses Microsoft's Enhanced Cryptographic Provider
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Code function: 1_2_00402520 CryptDestroyHash, 1_2_00402520

Compliance:

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Uses 32bit PE files
Source: DW1VgsgHNU.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED

Networking:

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C2 URLs / IPs found in malware configuration
Source: Malware configuration extractor URLs: dyn-wave.duckdns.org
Source: Malware configuration extractor URLs: http://dypage.duckdns.org/remcos_d_QUBXVO174
Uses dynamic DNS services
Source: unknown DNS query: name: dypage.duckdns.org
Source: unknown DNS query: name: dyn-wave.duckdns.org
Uses a known web browser user agent for HTTP communication
Source: global traffic HTTP traffic detected: GET /remcos_d_QUBXVO174.bin HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like GeckoHost: dypage.duckdns.orgCache-Control: no-cache
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.7:49893 -> 23.146.241.70:1144
Internet Provider seen in connection with other malware
Source: Joe Sandbox View ASN Name: VDI-NETWORKUS VDI-NETWORKUS
Source: Joe Sandbox View ASN Name: VDI-NETWORKUS VDI-NETWORKUS
IP address seen in connection with other malware
Source: Joe Sandbox View IP Address: 23.146.242.85 23.146.242.85
Source: DW1VgsgHNU.exe, 00000019.00000002.767385154.0000000000948000.00000004.00000020.sdmp String found in binary or memory: http://dypage.duckdns.org/remcos_d_QUBXVO174.bin
Source: DW1VgsgHNU.exe, 00000019.00000002.767385154.0000000000948000.00000004.00000020.sdmp String found in binary or memory: http://dypage.duckdns.org/remcos_d_QUBXVO174.binD
Source: DW1VgsgHNU.exe, 00000019.00000002.767385154.0000000000948000.00000004.00000020.sdmp String found in binary or memory: http://dypage.duckdns.org/remcos_d_QUBXVO174.binE
Source: unknown DNS traffic detected: queries for: dypage.duckdns.org
Source: global traffic HTTP traffic detected: GET /remcos_d_QUBXVO174.bin HTTP/1.1User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like GeckoHost: dypage.duckdns.orgCache-Control: no-cache

E-Banking Fraud:

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Yara detected Remcos RAT
Source: Yara match File source: 00000019.00000002.767385154.0000000000948000.00000004.00000020.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: DW1VgsgHNU.exe PID: 2800, type: MEMORYSTR

System Summary:

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Potential malicious icon found
Source: initial sample Icon embedded in PE file: bad icon match: 20047c7c70f0e004
Uses 32bit PE files
Source: DW1VgsgHNU.exe Static PE information: LOCAL_SYMS_STRIPPED, 32BIT_MACHINE, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, RELOCS_STRIPPED
Sample file is different than original file name gathered from version info
Source: DW1VgsgHNU.exe, 00000001.00000000.242528368.000000000042D000.00000002.00020000.sdmp Binary or memory string: OriginalFilenameSrklasse4.exe vs DW1VgsgHNU.exe
Source: DW1VgsgHNU.exe, 00000019.00000000.498515700.000000000042D000.00000002.00020000.sdmp Binary or memory string: OriginalFilenameSrklasse4.exe vs DW1VgsgHNU.exe
Source: DW1VgsgHNU.exe Binary or memory string: OriginalFilenameSrklasse4.exe vs DW1VgsgHNU.exe
PE file contains strange resources
Source: DW1VgsgHNU.exe Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Contains functionality to call native functions
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Code function: 25_2_0056EED3 Sleep,NtProtectVirtualMemory, 25_2_0056EED3
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Code function: 25_2_0056ED3B NtProtectVirtualMemory, 25_2_0056ED3B
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Code function: 25_2_0056EDD4 NtProtectVirtualMemory, 25_2_0056EDD4
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Code function: 25_2_0056ED50 NtProtectVirtualMemory, 25_2_0056ED50
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Code function: 25_2_0056EF19 NtProtectVirtualMemory, 25_2_0056EF19
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Code function: 25_2_0056ED2E NtProtectVirtualMemory, 25_2_0056ED2E
Abnormal high CPU Usage
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process Stats: CPU usage > 98%
Source: DW1VgsgHNU.exe Virustotal: Detection: 20%
Source: DW1VgsgHNU.exe Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Section loaded: C:\Windows\SysWOW64\msvbvm60.dll Jump to behavior
Source: unknown Process created: C:\Users\user\Desktop\DW1VgsgHNU.exe 'C:\Users\user\Desktop\DW1VgsgHNU.exe'
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process created: C:\Users\user\Desktop\DW1VgsgHNU.exe 'C:\Users\user\Desktop\DW1VgsgHNU.exe'
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process created: C:\Users\user\Desktop\DW1VgsgHNU.exe 'C:\Users\user\Desktop\DW1VgsgHNU.exe' Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{057EEE47-2572-4AA1-88D7-60CE2149E33C}\InProcServer32 Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Mutant created: \Sessions\1\BaseNamedObjects\Remcos-2LBKGP
Source: classification engine Classification label: mal100.rans.troj.evad.winEXE@3/0@2/2
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe File read: C:\Windows\System32\drivers\etc\hosts Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe File read: C:\Windows\System32\drivers\etc\hosts Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe File read: C:\Windows\System32\drivers\etc\hosts Jump to behavior

Data Obfuscation:

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Yara detected GuLoader
Source: Yara match File source: 00000001.00000002.499884696.00000000005A0000.00000040.00000001.sdmp, type: MEMORY
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Code function: 1_2_00409ABA pushad ; iretd 1_2_00409ABB
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Code function: 1_2_00407B13 push ecx; retf 1_2_00407B14
Source: initial sample Static PE information: section name: .text entropy: 6.92804161947
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion:

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Tries to detect Any.run
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe File opened: C:\Program Files\Qemu-ga\qemu-ga.exe Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe File opened: C:\Program Files\qga\qga.exe Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe File opened: C:\Program Files\Qemu-ga\qemu-ga.exe Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe File opened: C:\Program Files\qga\qga.exe Jump to behavior
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Last function: Thread delayed
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe System information queried: ModuleInformation Jump to behavior
Source: DW1VgsgHNU.exe, 00000019.00000002.767758753.00000000009A1000.00000004.00000020.sdmp Binary or memory string: Hyper-V RAW
Source: DW1VgsgHNU.exe, 00000019.00000002.767758753.00000000009A1000.00000004.00000020.sdmp Binary or memory string: Hyper-V RAW,

Anti Debugging:

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Hides threads from debuggers
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Thread information set: HideFromDebugger Jump to behavior
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Thread information set: HideFromDebugger Jump to behavior

HIPS / PFW / Operating System Protection Evasion:

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Creates a process in suspended mode (likely to inject code)
Source: C:\Users\user\Desktop\DW1VgsgHNU.exe Process created: C:\Users\user\Desktop\DW1VgsgHNU.exe 'C:\Users\user\Desktop\DW1VgsgHNU.exe' Jump to behavior
Source: DW1VgsgHNU.exe, 00000019.00000002.768074297.0000000000ED0000.00000002.00020000.sdmp Binary or memory string: uProgram Manager
Source: DW1VgsgHNU.exe, 00000019.00000002.767385154.0000000000948000.00000004.00000020.sdmp Binary or memory string: Program Manager
Source: DW1VgsgHNU.exe, 00000019.00000002.768074297.0000000000ED0000.00000002.00020000.sdmp Binary or memory string: Shell_TrayWnd
Source: DW1VgsgHNU.exe, 00000019.00000002.768074297.0000000000ED0000.00000002.00020000.sdmp Binary or memory string: Progman
Source: DW1VgsgHNU.exe, 00000019.00000002.768074297.0000000000ED0000.00000002.00020000.sdmp Binary or memory string: Progmanlock
Source: DW1VgsgHNU.exe, 00000019.00000002.767758753.00000000009A1000.00000004.00000020.sdmp Binary or memory string: |Program Manager|
Source: DW1VgsgHNU.exe, 00000019.00000002.767385154.0000000000948000.00000004.00000020.sdmp Binary or memory string: Program ManagerY

Stealing of Sensitive Information:

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GuLoader behavior detected
Source: Initial file Signature Results: GuLoader behavior
Yara detected Remcos RAT
Source: Yara match File source: 00000019.00000002.767385154.0000000000948000.00000004.00000020.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: DW1VgsgHNU.exe PID: 2800, type: MEMORYSTR

Remote Access Functionality:

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Yara detected Remcos RAT
Source: Yara match File source: 00000019.00000002.767385154.0000000000948000.00000004.00000020.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: DW1VgsgHNU.exe PID: 2800, type: MEMORYSTR
windows-stand
Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 491400 Sample: DW1VgsgHNU.exe Startdate: 27/09/2021 Architecture: WINDOWS Score: 100 17 Potential malicious icon found 2->17 19 Found malware configuration 2->19 21 Multi AV Scanner detection for submitted file 2->21 23 6 other signatures 2->23 6 DW1VgsgHNU.exe 2->6         started        process3 signatures4 25 Tries to detect Any.run 6->25 27 Hides threads from debuggers 6->27 9 DW1VgsgHNU.exe 2 6 6->9         started        process5 dnsIp6 13 dyn-wave.duckdns.org 23.146.241.70, 1144, 49893 VDI-NETWORKUS Reserved 9->13 15 dypage.duckdns.org 23.146.242.85, 49892, 80 VDI-NETWORKUS Reserved 9->15 29 Tries to detect Any.run 9->29 31 Hides threads from debuggers 9->31 signatures7
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
23.146.241.70
 dyn-wave.duckdns.org Reserved
46664 VDI-NETWORKUS true
23.146.242.85
 dypage.duckdns.org Reserved
46664 VDI-NETWORKUS true

Contacted Domains

Name IP Active
dypage.duckdns.org 23.146.242.85 true
dyn-wave.duckdns.org 23.146.241.70 true

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://dypage.duckdns.org/remcos_d_QUBXVO174.bin false
  • Avira URL Cloud: safe
 unknown
dyn-wave.duckdns.org true
  • Avira URL Cloud: safe
 unknown
http://dypage.duckdns.org/remcos_d_QUBXVO174 true
  • Avira URL Cloud: safe
 unknown