Analysis Overview
SHA256
477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff
Threat Level: Known bad
The file 477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff was found to be: Known bad.
Malicious Activity Summary
ISR Stealer Payload
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 SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-03-08 18:53
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 18:53
Reported
2022-03-08 19:20
Platform
win7-20220223-en
Max time kernel
4294183s
Max time network
125s
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-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1940 set thread context of 1996 | N/A | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe |
| PID 1940 set thread context of 1328 | N/A | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe
"C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe"
C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\Rw58E6FuMf.ini"
C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\C5vrrtRsRY.ini"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | sentrinonline.com | udp |
Files
memory/1996-56-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1996-58-0x0000000076271000-0x0000000076273000-memory.dmp
memory/1996-59-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1996-60-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Rw58E6FuMf.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/1328-63-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1328-66-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1328-67-0x0000000000400000-0x000000000041F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-03-08 18:53
Reported
2022-03-08 19:20
Platform
win10v2004-en-20220112
Max time kernel
111s
Max time network
153s
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-1-5-21-790714498-1549421491-1643397139-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3604 set thread context of 2336 | N/A | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe |
| PID 3604 set thread context of 3580 | N/A | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe
"C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe"
C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\1wpdV0IWHf.ini"
C:\Users\Admin\AppData\Local\Temp\477e6b09e3e89ad834d36eb692abdf95e2bd814c880918085d7b40abf5b19dff.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\P0ah1RgPzP.ini"
Network
| Country | Destination | Domain | Proto |
| NL | 104.80.224.57:443 | tcp | |
| US | 8.8.8.8:53 | sentrinonline.com | udp |
| US | 13.107.4.50:80 | tcp | |
| US | 13.107.4.50:80 | tcp | |
| US | 8.8.8.8:53 | geo.prod.do.dsp.mp.microsoft.com | udp |
| US | 52.143.84.45:443 | 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 |
| NL | 104.85.1.163:80 | tcp |
Files
memory/2336-132-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2336-134-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2336-135-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\1wpdV0IWHf.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/3580-137-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3580-139-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3580-140-0x0000000000400000-0x000000000041F000-memory.dmp