Analysis Overview
SHA256
41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73
Threat Level: Known bad
The file 41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73 was found to be: Known bad.
Malicious Activity Summary
suricata: ET MALWARE ISRStealer Checkin
ISR Stealer Payload
ISR Stealer
Isrstealer family
NirSoft MailPassView
Nirsoft
UPX packed file
Reads user/profile data of web browsers
Accesses Microsoft Outlook accounts
Suspicious use of SetThreadContext
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-03-08 19:15
Signatures
ISR Stealer Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Isrstealer family
Analysis: behavioral1
Detonation Overview
Submitted
2022-03-08 19:15
Reported
2022-03-08 19:29
Platform
win7-en-20211208
Max time kernel
117s
Max time network
127s
Command Line
Signatures
NirSoft MailPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Nirsoft
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Reads user/profile data of web browsers
Accesses Microsoft Outlook accounts
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1664 set thread context of 832 | N/A | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe |
| PID 1664 set thread context of 892 | N/A | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe
"C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe"
C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\LF3VIQiGv1.ini"
C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\sKRbuzMOAb.ini"
Network
Files
memory/832-57-0x0000000000400000-0x0000000000453000-memory.dmp
memory/832-59-0x00000000763F1000-0x00000000763F3000-memory.dmp
memory/832-60-0x0000000000400000-0x0000000000453000-memory.dmp
memory/832-61-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\LF3VIQiGv1.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/892-63-0x0000000000400000-0x000000000041F000-memory.dmp
memory/892-66-0x0000000000400000-0x000000000041F000-memory.dmp
memory/892-67-0x0000000000400000-0x000000000041F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-03-08 19:15
Reported
2022-03-08 19:29
Platform
win10v2004-en-20220112
Max time kernel
111s
Max time network
158s
Command Line
Signatures
ISR Stealer
suricata: ET MALWARE ISRStealer Checkin
NirSoft MailPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Nirsoft
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Reads user/profile data of web browsers
Accesses Microsoft Outlook accounts
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3484 set thread context of 3324 | N/A | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe |
| PID 3484 set thread context of 3696 | N/A | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe
"C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe"
C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\KaEWdA78FJ.ini"
C:\Users\Admin\AppData\Local\Temp\41faef920f93d0b081b5d93b78e3b8a91117f042b259f5529fce923ca2051f73.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\akXMQ1bizg.ini"
Network
| Country | Destination | Domain | Proto |
| US | 93.184.220.29:80 | tcp | |
| NL | 104.80.224.57:443 | tcp | |
| US | 8.8.8.8:53 | www.guruhkz.allalla.com | udp |
| US | 52.128.23.153:80 | www.guruhkz.allalla.com | tcp |
| US | 8.8.8.8:53 | geo.prod.do.dsp.mp.microsoft.com | udp |
| US | 52.137.110.235:443 | geo.prod.do.dsp.mp.microsoft.com | tcp |
| US | 8.8.8.8:53 | kv801.prod.do.dsp.mp.microsoft.com | udp |
| NL | 184.29.205.60:443 | kv801.prod.do.dsp.mp.microsoft.com | tcp |
| US | 8.8.8.8:53 | cp801.prod.do.dsp.mp.microsoft.com | udp |
| NL | 184.29.205.60:443 | cp801.prod.do.dsp.mp.microsoft.com | tcp |
| NL | 184.29.205.60:443 | cp801.prod.do.dsp.mp.microsoft.com | tcp |
| US | 8.8.8.8:53 | oneocsp.microsoft.com | udp |
| US | 131.253.33.203:80 | oneocsp.microsoft.com | tcp |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
| NL | 104.85.1.163:80 | www.microsoft.com | tcp |
| NL | 104.85.1.163:80 | www.microsoft.com | tcp |
Files
memory/3324-132-0x0000000000400000-0x0000000000453000-memory.dmp
memory/3324-134-0x0000000000400000-0x0000000000453000-memory.dmp
memory/3324-135-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\KaEWdA78FJ.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/3696-137-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3696-139-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3696-140-0x0000000000400000-0x000000000041F000-memory.dmp