Analysis Overview
SHA256
6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d
Threat Level: Known bad
The file 6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d was found to be: Known bad.
Malicious Activity Summary
ISR Stealer
ISR Stealer Payload
Isrstealer family
Nirsoft
NirSoft MailPassView
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 16:07
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 16:07
Reported
2022-03-08 16:12
Platform
win7-en-20211208
Max time kernel
121s
Max time network
130s
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\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1304 set thread context of 1284 | N/A | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe |
| PID 1304 set thread context of 572 | N/A | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe
"C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe"
C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\Ip5CpzVSkU.ini"
C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\rGwFWaL4BU.ini"
Network
Files
memory/1284-57-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1284-59-0x0000000075F91000-0x0000000075F93000-memory.dmp
memory/1284-60-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1284-61-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Ip5CpzVSkU.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/572-63-0x0000000000400000-0x000000000041F000-memory.dmp
memory/572-66-0x0000000000400000-0x000000000041F000-memory.dmp
memory/572-67-0x0000000000400000-0x000000000041F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-03-08 16:07
Reported
2022-03-08 16:13
Platform
win10v2004-en-20220113
Max time kernel
148s
Max time network
151s
Command Line
Signatures
ISR Stealer
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-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1676 set thread context of 1996 | N/A | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe |
| PID 1676 set thread context of 4684 | N/A | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe
"C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe"
C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\g7slJzAP30.ini"
C:\Users\Admin\AppData\Local\Temp\6cf2f10845db610a326a0b053755f1f3464d9d9c0714b0e40ea1211409965b9d.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\FW0axvQaI1.ini"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | emt-erimtan.com | udp |
| DE | 94.130.251.246:80 | emt-erimtan.com | tcp |
| DE | 67.24.27.254:80 | tcp | |
| DE | 67.24.27.254:80 | tcp | |
| US | 8.8.8.8:53 | oneocsp.microsoft.com | udp |
| US | 13.107.40.203:80 | oneocsp.microsoft.com | tcp |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
| NL | 2.21.41.70:80 | www.microsoft.com | tcp |
Files
memory/1996-132-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1996-134-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1996-135-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\g7slJzAP30.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/4684-137-0x0000000000400000-0x000000000041F000-memory.dmp
memory/4684-139-0x0000000000400000-0x000000000041F000-memory.dmp
memory/4684-140-0x0000000000400000-0x000000000041F000-memory.dmp