Analysis Overview
SHA256
673abf2aebf981b77d96c63037691693e6c1539dc3403e7affcb3874f5c94996
Threat Level: Known bad
The file 673abf2aebf981b77d96c63037691693e6c1539dc3403e7affcb3874f5c94996 was found to be: Known bad.
Malicious Activity Summary
HawkEye
NirSoft WebBrowserPassView
NirSoft MailPassView
Nirsoft
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Uses the VBS compiler for execution
Looks up external IP address via web service
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-03-10 04:16
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-03-10 04:16
Reported
2022-03-11 00:14
Platform
win7-20220310-en
Max time kernel
4294213s
Max time network
146s
Command Line
Signatures
HawkEye
NirSoft MailPassView
| 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 |
NirSoft WebBrowserPassView
| 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 |
Nirsoft
| 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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe | N/A |
Loads dropped DLL
Uses the VBS compiler for execution
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" | C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | whatismyipaddress.com | N/A | N/A |
| N/A | whatismyipaddress.com | N/A | N/A |
| N/A | whatismyipaddress.com | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1932 set thread context of 1600 | N/A | C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\673abf2aebf981b77d96c63037691693e6c1539dc3403e7affcb3874f5c94996.exe
"C:\Users\Admin\AppData\Local\Temp\673abf2aebf981b77d96c63037691693e6c1539dc3403e7affcb3874f5c94996.exe"
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe
"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | whatismyipaddress.com | udp |
| US | 104.16.155.36:80 | whatismyipaddress.com | tcp |
| US | 104.16.155.36:443 | whatismyipaddress.com | tcp |
| US | 104.16.155.36:443 | whatismyipaddress.com | tcp |
Files
memory/304-54-0x0000000075C41000-0x0000000075C43000-memory.dmp
\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe
| MD5 | c15db6d11e409d6902de8ea56c46f987 |
| SHA1 | fac5f32c5f2e906fd6cf637954b089c40da3b3d2 |
| SHA256 | affd66995d965965ccca7329621cecc01db591a8d9c4e6b8f03e0e2920c32f2e |
| SHA512 | 9e350678f2bfaffe26d2bc51b56eab53196c947b87e2abf08e75d20987df1714e0e094101bc553dea8de705daba1b16c0b6bc589a0f65e48309bc3b3494fb797 |
\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe
| MD5 | c15db6d11e409d6902de8ea56c46f987 |
| SHA1 | fac5f32c5f2e906fd6cf637954b089c40da3b3d2 |
| SHA256 | affd66995d965965ccca7329621cecc01db591a8d9c4e6b8f03e0e2920c32f2e |
| SHA512 | 9e350678f2bfaffe26d2bc51b56eab53196c947b87e2abf08e75d20987df1714e0e094101bc553dea8de705daba1b16c0b6bc589a0f65e48309bc3b3494fb797 |
\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe
| MD5 | c15db6d11e409d6902de8ea56c46f987 |
| SHA1 | fac5f32c5f2e906fd6cf637954b089c40da3b3d2 |
| SHA256 | affd66995d965965ccca7329621cecc01db591a8d9c4e6b8f03e0e2920c32f2e |
| SHA512 | 9e350678f2bfaffe26d2bc51b56eab53196c947b87e2abf08e75d20987df1714e0e094101bc553dea8de705daba1b16c0b6bc589a0f65e48309bc3b3494fb797 |
\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe
| MD5 | c15db6d11e409d6902de8ea56c46f987 |
| SHA1 | fac5f32c5f2e906fd6cf637954b089c40da3b3d2 |
| SHA256 | affd66995d965965ccca7329621cecc01db591a8d9c4e6b8f03e0e2920c32f2e |
| SHA512 | 9e350678f2bfaffe26d2bc51b56eab53196c947b87e2abf08e75d20987df1714e0e094101bc553dea8de705daba1b16c0b6bc589a0f65e48309bc3b3494fb797 |
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe
| MD5 | c15db6d11e409d6902de8ea56c46f987 |
| SHA1 | fac5f32c5f2e906fd6cf637954b089c40da3b3d2 |
| SHA256 | affd66995d965965ccca7329621cecc01db591a8d9c4e6b8f03e0e2920c32f2e |
| SHA512 | 9e350678f2bfaffe26d2bc51b56eab53196c947b87e2abf08e75d20987df1714e0e094101bc553dea8de705daba1b16c0b6bc589a0f65e48309bc3b3494fb797 |
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe
| MD5 | c15db6d11e409d6902de8ea56c46f987 |
| SHA1 | fac5f32c5f2e906fd6cf637954b089c40da3b3d2 |
| SHA256 | affd66995d965965ccca7329621cecc01db591a8d9c4e6b8f03e0e2920c32f2e |
| SHA512 | 9e350678f2bfaffe26d2bc51b56eab53196c947b87e2abf08e75d20987df1714e0e094101bc553dea8de705daba1b16c0b6bc589a0f65e48309bc3b3494fb797 |
memory/1932-62-0x00000000743C0000-0x000000007496B000-memory.dmp
memory/1932-63-0x00000000009E0000-0x00000000009E1000-memory.dmp
memory/1932-64-0x00000000743C0000-0x000000007496B000-memory.dmp
memory/1600-65-0x0000000000400000-0x000000000041B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-03-10 04:16
Reported
2022-03-11 00:14
Platform
win10v2004-20220310-en
Max time kernel
119s
Max time network
125s
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 WebBrowserPassView
| 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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\673abf2aebf981b77d96c63037691693e6c1539dc3403e7affcb3874f5c94996.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\673abf2aebf981b77d96c63037691693e6c1539dc3403e7affcb3874f5c94996.exe
"C:\Users\Admin\AppData\Local\Temp\673abf2aebf981b77d96c63037691693e6c1539dc3403e7affcb3874f5c94996.exe"
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe
"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe"
C:\Windows\SysWOW64\fondue.exe
"C:\Windows\system32\fondue.exe" /enable-feature:NetFx3 /caller-name:mscoreei.dll
C:\Windows\system32\FonDUE.EXE
"C:\Windows\sysnative\FonDUE.EXE" /enable-feature:NetFx3 /caller-name:mscoreei.dll
Network
| Country | Destination | Domain | Proto |
| NL | 104.80.225.205:443 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe
| MD5 | c15db6d11e409d6902de8ea56c46f987 |
| SHA1 | fac5f32c5f2e906fd6cf637954b089c40da3b3d2 |
| SHA256 | affd66995d965965ccca7329621cecc01db591a8d9c4e6b8f03e0e2920c32f2e |
| SHA512 | 9e350678f2bfaffe26d2bc51b56eab53196c947b87e2abf08e75d20987df1714e0e094101bc553dea8de705daba1b16c0b6bc589a0f65e48309bc3b3494fb797 |
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Launcher.exe
| MD5 | c15db6d11e409d6902de8ea56c46f987 |
| SHA1 | fac5f32c5f2e906fd6cf637954b089c40da3b3d2 |
| SHA256 | affd66995d965965ccca7329621cecc01db591a8d9c4e6b8f03e0e2920c32f2e |
| SHA512 | 9e350678f2bfaffe26d2bc51b56eab53196c947b87e2abf08e75d20987df1714e0e094101bc553dea8de705daba1b16c0b6bc589a0f65e48309bc3b3494fb797 |