Analysis Overview
SHA256
95f5e8a8f81cc22aa687cf82e0d6cadbf130f25018fa0097710927ed40d2f939
Threat Level: Known bad
The file b42e7395d548094719753ce21cafc064 was found to be: Known bad.
Malicious Activity Summary
ISR Stealer payload
ISR Stealer
Loads dropped DLL
Executes dropped EXE
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Checks computer location settings
Adds Run key to start application
Writes to the Master Boot Record (MBR)
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-05 07:50
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-05 07:50
Reported
2024-03-05 07:53
Platform
win7-20240221-en
Max time kernel
129s
Max time network
132s
Command Line
Signatures
ISR Stealer
ISR Stealer payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_vnpanel.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Run\crssr = "C:\\Users\\Admin\\AppData\\Roaming\\crssr" | C:\Users\Admin\AppData\Local\Temp\mw_111221_vnpanel.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PhysicalDrive0 | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1856 set thread context of 2236 | N/A | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe
"C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe"
C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe
"C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe"
C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe
"C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe"
C:\Users\Admin\AppData\Local\Temp\mw_111221_vnpanel.exe
"C:\Users\Admin\AppData\Local\Temp\mw_111221_vnpanel.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | mw.webcampaign.de | udp |
Files
memory/2236-2-0x0000000000400000-0x0000000000449000-memory.dmp
memory/2236-4-0x0000000000400000-0x0000000000449000-memory.dmp
memory/2236-6-0x0000000000400000-0x0000000000449000-memory.dmp
memory/2236-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2236-12-0x0000000000400000-0x0000000000449000-memory.dmp
memory/2236-14-0x0000000000400000-0x0000000000449000-memory.dmp
\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe
| MD5 | 32c96c4a94e4066cc6eeb2b0d24dfc36 |
| SHA1 | d256f6ea46af1c578d96b59d945f00880f9aa4f0 |
| SHA256 | 02d227751808eb5cd476c91d6b2f8260c812042de78fc04ae3770168f2873f97 |
| SHA512 | af0e6c6b8ba9769b5981780740b00bac46c3cc1ae552e5d6a6a29f6eeb4df312e3f39cbd163e5d612125ae2f91173432b6a22aa1dcccc7c5eff9aafad0692fe2 |
\Users\Admin\AppData\Local\Temp\mw_111221_vnpanel.exe
| MD5 | 16cde6a521edcd5cc7fa9860096f9222 |
| SHA1 | b69246e52d0adee6725fd9ec69c7a7b9974b7634 |
| SHA256 | cdd686b7f74b3f0224bbc44daffe7fa9cc9309838866f1586d317a7df5e5df6f |
| SHA512 | 41ebfe0a023213113e13307d9bcea0f780f9604cdaa444ce73cc720156d2f3868f1f32c585ad2eb8a8bdd60a0d0ba14e1140d1fd484b4cd75de8ff02826869b9 |
memory/2236-36-0x0000000000400000-0x0000000000449000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-05 07:50
Reported
2024-03-05 07:53
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
153s
Command Line
Signatures
ISR Stealer
ISR Stealer payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_vnpanel.exe | N/A |
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\crssr = "C:\\Users\\Admin\\AppData\\Roaming\\crssr" | C:\Users\Admin\AppData\Local\Temp\mw_111221_vnpanel.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PhysicalDrive0 | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1056 set thread context of 4508 | N/A | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe
"C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe"
C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe
"C:\Users\Admin\AppData\Local\Temp\b42e7395d548094719753ce21cafc064.exe"
C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe
"C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe"
C:\Users\Admin\AppData\Local\Temp\mw_111221_vnpanel.exe
"C:\Users\Admin\AppData\Local\Temp\mw_111221_vnpanel.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mw.webcampaign.de | udp |
| US | 8.8.8.8:53 | 187.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | mw.webcampaign.de | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mw.webcampaign.de | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mw.webcampaign.de | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mw.webcampaign.de | udp |
| US | 8.8.8.8:53 | 91.65.42.20.in-addr.arpa | udp |
Files
memory/4508-2-0x0000000000400000-0x0000000000449000-memory.dmp
memory/4508-4-0x0000000000400000-0x0000000000449000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\mw_111221_passwd.exe
| MD5 | 32c96c4a94e4066cc6eeb2b0d24dfc36 |
| SHA1 | d256f6ea46af1c578d96b59d945f00880f9aa4f0 |
| SHA256 | 02d227751808eb5cd476c91d6b2f8260c812042de78fc04ae3770168f2873f97 |
| SHA512 | af0e6c6b8ba9769b5981780740b00bac46c3cc1ae552e5d6a6a29f6eeb4df312e3f39cbd163e5d612125ae2f91173432b6a22aa1dcccc7c5eff9aafad0692fe2 |
C:\Users\Admin\AppData\Local\Temp\mw_111221_vnpanel.exe
| MD5 | 16cde6a521edcd5cc7fa9860096f9222 |
| SHA1 | b69246e52d0adee6725fd9ec69c7a7b9974b7634 |
| SHA256 | cdd686b7f74b3f0224bbc44daffe7fa9cc9309838866f1586d317a7df5e5df6f |
| SHA512 | 41ebfe0a023213113e13307d9bcea0f780f9604cdaa444ce73cc720156d2f3868f1f32c585ad2eb8a8bdd60a0d0ba14e1140d1fd484b4cd75de8ff02826869b9 |
memory/4508-28-0x0000000000400000-0x0000000000449000-memory.dmp