Analysis Overview
SHA256
c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602
Threat Level: Known bad
The file c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602 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
2022-10-11 04:28
Signatures
ISR Stealer payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Isrstealer family
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-11 04:28
Reported
2022-10-11 05:33
Platform
win7-20220812-en
Max time kernel
30s
Max time network
46s
Command Line
Signatures
NirSoft MailPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Nirsoft
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| 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 |
| 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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1628 set thread context of 1152 | N/A | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe |
| PID 1628 set thread context of 1708 | N/A | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe
"C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe"
C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\M0QXfsjBQn.ini"
C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\st04tsFBRs.ini"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | autoitest.altervista.org | udp |
Files
memory/1152-56-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1152-57-0x00000000004512E0-mapping.dmp
memory/1152-59-0x0000000076201000-0x0000000076203000-memory.dmp
memory/1152-60-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1152-61-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1152-62-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1152-63-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\M0QXfsjBQn.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/1708-66-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1708-67-0x000000000041C410-mapping.dmp
memory/1708-70-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1708-71-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1708-72-0x0000000000400000-0x000000000041F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-11 04:28
Reported
2022-10-11 05:33
Platform
win10v2004-20220812-en
Max time kernel
148s
Max time network
154s
Command Line
Signatures
NirSoft MailPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Nirsoft
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| 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 |
| 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-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3080 set thread context of 956 | N/A | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe |
| PID 3080 set thread context of 4596 | N/A | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe
"C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe"
C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\o6itytjt96.ini"
C:\Users\Admin\AppData\Local\Temp\c1b6543df251b6157e8be2772d637cc9517927545bce9648119f7d4371b8a602.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\iginH2nKYp.ini"
Network
| Country | Destination | Domain | Proto |
| US | 93.184.221.240:80 | tcp | |
| US | 8.8.8.8:53 | autoitest.altervista.org | udp |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 52.242.97.97:443 | tcp | |
| US | 52.168.117.170:443 | tcp | |
| US | 8.8.8.8:53 | 15.89.54.20.in-addr.arpa | udp |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 8.8.8.8:53 | 176.122.125.40.in-addr.arpa | udp |
Files
memory/956-134-0x0000000000000000-mapping.dmp
memory/956-135-0x0000000000400000-0x0000000000453000-memory.dmp
memory/956-137-0x0000000000400000-0x0000000000453000-memory.dmp
memory/956-138-0x0000000000400000-0x0000000000453000-memory.dmp
memory/956-139-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\o6itytjt96.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/4596-141-0x0000000000000000-mapping.dmp
memory/4596-142-0x0000000000400000-0x000000000041F000-memory.dmp
memory/4596-144-0x0000000000400000-0x000000000041F000-memory.dmp
memory/4596-145-0x0000000000400000-0x000000000041F000-memory.dmp
memory/4596-146-0x0000000000400000-0x000000000041F000-memory.dmp