Analysis Overview
SHA256
cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b
Threat Level: Known bad
The file cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b was found to be: Known bad.
Malicious Activity Summary
ISR Stealer
ISR Stealer payload
Nirsoft
NirSoft MailPassView
UPX packed file
Drops startup file
Loads dropped DLL
Accesses Microsoft Outlook accounts
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-10-01 23:52
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-01 23:52
Reported
2022-10-02 02:22
Platform
win7-20220812-en
Max time kernel
45s
Max time network
45s
Command Line
Signatures
ISR Stealer
ISR Stealer payload
| 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 |
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 |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\zb72t6bIXt.lnk | C:\Users\Admin\AppData\Local\Temp\cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b.exe | N/A |
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:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1280 set thread context of 1100 | N/A | C:\Users\Admin\AppData\Local\Temp\cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe |
| PID 1100 set thread context of 2016 | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe |
| PID 1100 set thread context of 1676 | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b.exe
"C:\Users\Admin\AppData\Local\Temp\cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\fIpTXDkzPb.ini"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\P8snl4CbEJ.ini"
Network
Files
memory/1280-54-0x0000000075811000-0x0000000075813000-memory.dmp
memory/1280-55-0x0000000074110000-0x00000000746BB000-memory.dmp
memory/1100-56-0x0000000000400000-0x0000000000442000-memory.dmp
memory/1100-57-0x0000000000400000-0x0000000000442000-memory.dmp
memory/1100-59-0x0000000000400000-0x0000000000442000-memory.dmp
memory/1100-62-0x0000000000401180-mapping.dmp
memory/1100-61-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2016-67-0x00000000004512E0-mapping.dmp
memory/2016-66-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2016-70-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2016-71-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1100-72-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2016-73-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1280-74-0x0000000074110000-0x00000000746BB000-memory.dmp
memory/2016-75-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\fIpTXDkzPb.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/1676-78-0x000000000041C410-mapping.dmp
memory/1676-77-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1676-81-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1676-82-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1676-83-0x0000000000400000-0x000000000041F000-memory.dmp
\Users\Admin\AppData\Roaming\GSILlzCw\XXBSrQ1V.exe
| MD5 | dfe4a1cd1e822fba707b9d20017d0084 |
| SHA1 | e273c86578c9207b08c5d0517438cef0677a0330 |
| SHA256 | cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b |
| SHA512 | 7e57b2e54741952da97c0c82631aba1a16dcbc797ff8500b3ae0f4d431e2d73ba742fb41378a3e61cafc96829a3c1a37be7c339780ed640d3c5eb6c5bce62c49 |
memory/1280-85-0x0000000074110000-0x00000000746BB000-memory.dmp
memory/1100-86-0x0000000000400000-0x0000000000442000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-10-01 23:52
Reported
2022-10-02 02:22
Platform
win10v2004-20220812-en
Max time kernel
97s
Max time network
152s
Command Line
Signatures
ISR Stealer
ISR Stealer payload
| 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 |
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 |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\zb72t6bIXt.lnk | C:\Users\Admin\AppData\Local\Temp\cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b.exe | N/A |
Accesses Microsoft Outlook accounts
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 680 set thread context of 3440 | N/A | C:\Users\Admin\AppData\Local\Temp\cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe |
| PID 3440 set thread context of 4424 | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe |
| PID 3440 set thread context of 1464 | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b.exe
"C:\Users\Admin\AppData\Local\Temp\cdff44668207a42d3e83721029d666d72482b696e2e6db8e8dbc4f8b3440370b.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\TKX0yq9v8q.ini"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\Cvtres.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\PYLAGmazPh.ini"
Network
| Country | Destination | Domain | Proto |
| HK | 43.129.255.47:443 | tcp | |
| NL | 65.9.84.15:80 | tcp | |
| NL | 65.9.86.31:443 | tcp | |
| US | 20.42.65.85:443 | tcp | |
| US | 8.8.8.8:53 | blessings.1eko.com | udp |
| US | 52.71.57.184:80 | blessings.1eko.com | tcp |
| US | 8.8.8.8:53 | www.hugedomains.com | udp |
| US | 172.67.70.191:443 | www.hugedomains.com | tcp |
| US | 13.107.21.200:443 | tcp | |
| NL | 104.80.225.205:443 | tcp | |
| NL | 95.101.78.106:80 | tcp | |
| NL | 87.248.202.1:80 | tcp | |
| NL | 87.248.202.1:80 | tcp |
Files
memory/680-132-0x00000000752E0000-0x0000000075891000-memory.dmp
memory/680-133-0x00000000752E0000-0x0000000075891000-memory.dmp
memory/3440-134-0x0000000000000000-mapping.dmp
memory/3440-135-0x0000000000400000-0x0000000000442000-memory.dmp
memory/3440-137-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4424-140-0x0000000000000000-mapping.dmp
memory/4424-141-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4424-143-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4424-144-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4424-145-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4424-146-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\TKX0yq9v8q.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/680-148-0x00000000752E0000-0x0000000075891000-memory.dmp
memory/3440-149-0x0000000000400000-0x0000000000442000-memory.dmp
memory/1464-150-0x0000000000000000-mapping.dmp
memory/1464-151-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1464-153-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1464-154-0x0000000000400000-0x000000000041F000-memory.dmp
memory/1464-155-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3440-156-0x0000000000400000-0x0000000000442000-memory.dmp