Analysis Overview
SHA256
6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74
Threat Level: Known bad
The file 6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74 was found to be: Known bad.
Malicious Activity Summary
HawkEye
Nirsoft
NirSoft WebBrowserPassView
NirSoft MailPassView
Nirsoft
Executes dropped EXE
Deletes itself
Loads dropped DLL
Uses the VBS compiler for execution
Adds Run key to start application
Looks up external IP address via web service
Accesses Microsoft Outlook accounts
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-03-10 04:27
Signatures
Nirsoft
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
NirSoft MailPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
NirSoft WebBrowserPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2022-03-10 04:27
Reported
2022-03-11 00:22
Platform
win7-20220223-en
Max time kernel
4294211s
Max time network
125s
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 |
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 |
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\Roaming\Windows Update.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows Update.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74.exe | N/A |
Uses the VBS compiler for execution
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:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" | C:\Users\Admin\AppData\Roaming\Windows Update.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 268 set thread context of 980 | N/A | C:\Users\Admin\AppData\Roaming\Windows Update.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
| PID 268 set thread context of 1060 | N/A | C:\Users\Admin\AppData\Roaming\Windows Update.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Windows Update.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows Update.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74.exe
"C:\Users\Admin\AppData\Local\Temp\6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74.exe"
C:\Users\Admin\AppData\Roaming\Windows Update.exe
"C:\Users\Admin\AppData\Roaming\Windows Update.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"
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\holderwb.txt"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | whatismyipaddress.com | udp |
| US | 104.16.154.36:80 | whatismyipaddress.com | tcp |
| US | 104.16.154.36:443 | whatismyipaddress.com | tcp |
| US | 104.16.154.36:443 | whatismyipaddress.com | tcp |
| US | 8.8.8.8:53 | smtp.web.de | udp |
| DE | 213.165.67.108:587 | smtp.web.de | tcp |
Files
memory/1204-54-0x0000000074E31000-0x0000000074E33000-memory.dmp
memory/1204-55-0x0000000074220000-0x00000000747CB000-memory.dmp
memory/1204-56-0x00000000001D0000-0x00000000001D1000-memory.dmp
\Users\Admin\AppData\Roaming\Windows Update.exe
| MD5 | d22158dbf229b4dd99a606be9c479c1a |
| SHA1 | aecc92ca0361a94bb93a7b610026b26129d93c67 |
| SHA256 | 6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74 |
| SHA512 | 10d208ab4cb6413d7d79322dfa93a999822acbb1779a9b47d95473b9f134a554b7677d99051fee50a2a1ec9c621c56c21e96293c5e8c0c987f339b375ebbe955 |
C:\Users\Admin\AppData\Roaming\Windows Update.exe
| MD5 | d22158dbf229b4dd99a606be9c479c1a |
| SHA1 | aecc92ca0361a94bb93a7b610026b26129d93c67 |
| SHA256 | 6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74 |
| SHA512 | 10d208ab4cb6413d7d79322dfa93a999822acbb1779a9b47d95473b9f134a554b7677d99051fee50a2a1ec9c621c56c21e96293c5e8c0c987f339b375ebbe955 |
C:\Users\Admin\AppData\Roaming\Windows Update.exe
| MD5 | d22158dbf229b4dd99a606be9c479c1a |
| SHA1 | aecc92ca0361a94bb93a7b610026b26129d93c67 |
| SHA256 | 6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74 |
| SHA512 | 10d208ab4cb6413d7d79322dfa93a999822acbb1779a9b47d95473b9f134a554b7677d99051fee50a2a1ec9c621c56c21e96293c5e8c0c987f339b375ebbe955 |
memory/268-62-0x0000000001FF0000-0x0000000001FF1000-memory.dmp
memory/268-61-0x0000000074220000-0x00000000747CB000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\SysInfo.txt
| MD5 | eab945c8565f0f35a1f114cd17b582ff |
| SHA1 | 009095975f01dcd2e4ebc03a702c1c31bdc67d92 |
| SHA256 | d377ec6fc25d3c81f293c99acdf2fa05a4d2ae991e9111483663a5282c9301ae |
| SHA512 | 6deb78a706aed247047bf19cbb7749ec0f89b67ee92ddcd325789821170d273688615bc086aa24249fdd6101b444e047a9bf4f684e8a897346f758402c7ff59e |
memory/980-64-0x0000000000400000-0x000000000041B000-memory.dmp
memory/980-67-0x0000000000400000-0x000000000041B000-memory.dmp
memory/268-68-0x0000000001FF5000-0x0000000002006000-memory.dmp
memory/1060-72-0x0000000000400000-0x0000000000458000-memory.dmp
memory/1060-69-0x0000000000400000-0x0000000000458000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\holderwb.txt
| MD5 | f3b25701fe362ec84616a93a45ce9998 |
| SHA1 | d62636d8caec13f04e28442a0a6fa1afeb024bbb |
| SHA256 | b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209 |
| SHA512 | 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84 |
memory/268-74-0x0000000002006000-0x0000000002007000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-03-10 04:27
Reported
2022-03-11 00:22
Platform
win10v2004-en-20220113
Max time kernel
134s
Max time network
138s
Command Line
Signatures
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1504 wrote to memory of 1620 | N/A | C:\Users\Admin\AppData\Local\Temp\6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74.exe | C:\Windows\SysWOW64\fondue.exe |
| PID 1504 wrote to memory of 1620 | N/A | C:\Users\Admin\AppData\Local\Temp\6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74.exe | C:\Windows\SysWOW64\fondue.exe |
| PID 1504 wrote to memory of 1620 | N/A | C:\Users\Admin\AppData\Local\Temp\6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74.exe | C:\Windows\SysWOW64\fondue.exe |
| PID 1620 wrote to memory of 2052 | N/A | C:\Windows\SysWOW64\fondue.exe | C:\Windows\system32\FonDUE.EXE |
| PID 1620 wrote to memory of 2052 | N/A | C:\Windows\SysWOW64\fondue.exe | C:\Windows\system32\FonDUE.EXE |
Processes
C:\Users\Admin\AppData\Local\Temp\6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74.exe
"C:\Users\Admin\AppData\Local\Temp\6679c3b3401b491bd63cd0c6dd0e446de086eefe5a2b57d56c42198f233b4e74.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