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Windows
Analysis Report
DO-COSU6387686280.pdf.exe
Overview
General Information
Detection
FormBook, PureLog Stealer
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Double Extension File Execution
Suricata IDS alerts for network traffic
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
AI detected suspicious sample
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if the current process is being debugged
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found inlined nop instructions (likely shell or obfuscated code)
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Classification
- System is w10x64
- DO-COSU6387686280.pdf.exe (PID: 352 cmdline:
"C:\Users\ user\Deskt op\DO-COSU 6387686280 .pdf.exe" MD5: AD0DA4A07F4866D67B266C8686F76081) - DO-COSU6387686280.pdf.exe (PID: 2060 cmdline:
"C:\Users\ user\Deskt op\DO-COSU 6387686280 .pdf.exe" MD5: AD0DA4A07F4866D67B266C8686F76081) - EnLuReulIds.exe (PID: 5940 cmdline:
"C:\Progra m Files (x 86)\hLNpsI HmukIZoDRD xpFbCIICuf iWlKehcOAN mZAhCcJscO CNiHYcXedT EQJmYoLIhx FbKY\EnLuR eulIds.exe " MD5: 32B8AD6ECA9094891E792631BAEA9717) - mountvol.exe (PID: 3428 cmdline:
"C:\Window s\SysWOW64 \mountvol. exe" MD5: E0B3FFF7584298E77DFFB50796839FED) - EnLuReulIds.exe (PID: 6380 cmdline:
"C:\Progra m Files (x 86)\hLNpsI HmukIZoDRD xpFbCIICuf iWlKehcOAN mZAhCcJscO CNiHYcXedT EQJmYoLIhx FbKY\EnLuR eulIds.exe " MD5: 32B8AD6ECA9094891E792631BAEA9717) - firefox.exe (PID: 4936 cmdline:
"C:\Progra m Files\Mo zilla Fire fox\Firefo x.exe" MD5: C86B1BE9ED6496FE0E0CBE73F81D8045)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
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Formbook, Formbo | FormBook contains a unique crypter RunPE that has unique behavioral patterns subject to detection. It was initially called "Babushka Crypter" by Insidemalware. |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Click to see the 6 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems), @blu3_team (idea), Nasreddine Bencherchali (Nextron Systems): |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-11-25T13:55:49.067574+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49714 | 202.61.233.66 | 80 | TCP |
2024-11-25T13:56:14.280884+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49719 | 172.67.129.38 | 80 | TCP |
2024-11-25T13:56:29.193972+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49725 | 209.74.77.109 | 80 | TCP |
2024-11-25T13:56:44.481170+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49729 | 38.181.21.85 | 80 | TCP |
2024-11-25T13:56:59.969225+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49733 | 195.110.124.133 | 80 | TCP |
2024-11-25T13:57:16.247743+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49737 | 163.44.185.183 | 80 | TCP |
2024-11-25T13:57:32.410829+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49741 | 118.107.250.103 | 80 | TCP |
2024-11-25T13:57:47.413211+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49745 | 13.248.169.48 | 80 | TCP |
2024-11-25T13:58:02.236284+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49749 | 84.32.84.32 | 80 | TCP |
2024-11-25T13:58:17.251012+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49753 | 104.21.24.198 | 80 | TCP |
2024-11-25T13:58:32.464882+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49757 | 66.29.137.10 | 80 | TCP |
2024-11-25T13:58:47.503193+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49761 | 37.140.192.206 | 80 | TCP |
2024-11-25T13:59:03.636767+0100 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49765 | 199.59.243.227 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-11-25T13:55:49.067574+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49714 | 202.61.233.66 | 80 | TCP |
2024-11-25T13:56:14.280884+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49719 | 172.67.129.38 | 80 | TCP |
2024-11-25T13:56:29.193972+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49725 | 209.74.77.109 | 80 | TCP |
2024-11-25T13:56:44.481170+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49729 | 38.181.21.85 | 80 | TCP |
2024-11-25T13:56:59.969225+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49733 | 195.110.124.133 | 80 | TCP |
2024-11-25T13:57:16.247743+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49737 | 163.44.185.183 | 80 | TCP |
2024-11-25T13:57:32.410829+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49741 | 118.107.250.103 | 80 | TCP |
2024-11-25T13:57:47.413211+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49745 | 13.248.169.48 | 80 | TCP |
2024-11-25T13:58:02.236284+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49749 | 84.32.84.32 | 80 | TCP |
2024-11-25T13:58:17.251012+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49753 | 104.21.24.198 | 80 | TCP |
2024-11-25T13:58:32.464882+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49757 | 66.29.137.10 | 80 | TCP |
2024-11-25T13:58:47.503193+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49761 | 37.140.192.206 | 80 | TCP |
2024-11-25T13:59:03.636767+0100 | 2855465 | 1 | A Network Trojan was detected | 192.168.2.8 | 49765 | 199.59.243.227 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-11-25T13:56:06.093405+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49716 | 172.67.129.38 | 80 | TCP |
2024-11-25T13:56:08.805473+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49717 | 172.67.129.38 | 80 | TCP |
2024-11-25T13:56:11.426007+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49718 | 172.67.129.38 | 80 | TCP |
2024-11-25T13:56:21.198374+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49721 | 209.74.77.109 | 80 | TCP |
2024-11-25T13:56:23.837299+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49723 | 209.74.77.109 | 80 | TCP |
2024-11-25T13:56:26.511818+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49724 | 209.74.77.109 | 80 | TCP |
2024-11-25T13:56:36.413440+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49726 | 38.181.21.85 | 80 | TCP |
2024-11-25T13:56:39.085307+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49727 | 38.181.21.85 | 80 | TCP |
2024-11-25T13:56:41.741523+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49728 | 38.181.21.85 | 80 | TCP |
2024-11-25T13:56:51.740869+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49730 | 195.110.124.133 | 80 | TCP |
2024-11-25T13:56:54.624676+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49731 | 195.110.124.133 | 80 | TCP |
2024-11-25T13:56:57.396791+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49732 | 195.110.124.133 | 80 | TCP |
2024-11-25T13:57:08.291965+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49734 | 163.44.185.183 | 80 | TCP |
2024-11-25T13:57:10.949462+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49735 | 163.44.185.183 | 80 | TCP |
2024-11-25T13:57:13.611612+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49736 | 163.44.185.183 | 80 | TCP |
2024-11-25T13:57:23.913704+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49738 | 118.107.250.103 | 80 | TCP |
2024-11-25T13:57:26.649123+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49739 | 118.107.250.103 | 80 | TCP |
2024-11-25T13:57:29.632280+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49740 | 118.107.250.103 | 80 | TCP |
2024-11-25T13:57:39.176819+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49742 | 13.248.169.48 | 80 | TCP |
2024-11-25T13:57:41.886045+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49743 | 13.248.169.48 | 80 | TCP |
2024-11-25T13:57:44.614649+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49744 | 13.248.169.48 | 80 | TCP |
2024-11-25T13:57:54.210712+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49746 | 84.32.84.32 | 80 | TCP |
2024-11-25T13:57:56.933477+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49747 | 84.32.84.32 | 80 | TCP |
2024-11-25T13:57:59.559833+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49748 | 84.32.84.32 | 80 | TCP |
2024-11-25T13:58:09.382237+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49750 | 104.21.24.198 | 80 | TCP |
2024-11-25T13:58:11.851475+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49751 | 104.21.24.198 | 80 | TCP |
2024-11-25T13:58:14.725976+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49752 | 104.21.24.198 | 80 | TCP |
2024-11-25T13:58:24.434110+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49754 | 66.29.137.10 | 80 | TCP |
2024-11-25T13:58:27.003955+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49755 | 66.29.137.10 | 80 | TCP |
2024-11-25T13:58:29.746107+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49756 | 66.29.137.10 | 80 | TCP |
2024-11-25T13:58:39.618490+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49758 | 37.140.192.206 | 80 | TCP |
2024-11-25T13:58:42.163649+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49759 | 37.140.192.206 | 80 | TCP |
2024-11-25T13:58:44.833531+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49760 | 37.140.192.206 | 80 | TCP |
2024-11-25T13:58:55.373235+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49762 | 199.59.243.227 | 80 | TCP |
2024-11-25T13:58:58.414028+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49763 | 199.59.243.227 | 80 | TCP |
2024-11-25T13:59:00.945944+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49764 | 199.59.243.227 | 80 | TCP |
2024-11-25T13:59:12.161249+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.8 | 49766 | 194.58.112.174 | 80 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira: |
Source: | ReversingLabs: |
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Source: | Code function: | 6_2_02A3C870 |
Source: | Code function: | 6_2_02A29F00 | |
Source: | Code function: | 6_2_02A2E37F | |
Source: | Code function: | 6_2_034B04DE |
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