Analysis Overview
SHA256
a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4
Threat Level: Known bad
The file a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe was found to be: Known bad.
Malicious Activity Summary
Remcos family
Detected Nirsoft tools
NirSoft WebBrowserPassView
NirSoft MailPassView
Reads user/profile data of web browsers
Accesses Microsoft Outlook accounts
Suspicious use of SetThreadContext
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-11 17:41
Signatures
Remcos family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-11 17:41
Reported
2024-11-11 17:44
Platform
win7-20240903-en
Max time kernel
147s
Max time network
147s
Command Line
Signatures
Detected Nirsoft tools
| 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 |
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 |
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 |
Reads user/profile data of web browsers
Accesses Microsoft Outlook accounts
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2276 set thread context of 2968 | N/A | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe |
| PID 2276 set thread context of 2540 | N/A | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe |
| PID 2276 set thread context of 2912 | N/A | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe
"C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe"
C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe
C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe /stext "C:\Users\Admin\AppData\Local\Temp\yrmvaqwvm"
C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe
C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe /stext "C:\Users\Admin\AppData\Local\Temp\itrobigpabfn"
C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe
C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe /stext "C:\Users\Admin\AppData\Local\Temp\lnwhcbrqojxshab"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | shlobo.duckdns.org | udp |
| US | 8.8.8.8:53 | shlobo.duckdns.org | udp |
| US | 192.3.101.149:9374 | shlobo.duckdns.org | tcp |
| US | 192.3.101.149:9374 | shlobo.duckdns.org | tcp |
| US | 8.8.8.8:53 | geoplugin.net | udp |
| NL | 178.237.33.50:80 | geoplugin.net | tcp |
Files
memory/2968-2-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2540-3-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2912-14-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2540-13-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2968-12-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2540-11-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2968-10-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2540-9-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2968-8-0x0000000000400000-0x0000000000478000-memory.dmp
memory/2540-7-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2912-16-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2912-17-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2912-18-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2912-21-0x0000000000400000-0x0000000000424000-memory.dmp
memory/2968-26-0x0000000000400000-0x0000000000478000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\yrmvaqwvm
| MD5 | f3b25701fe362ec84616a93a45ce9998 |
| SHA1 | d62636d8caec13f04e28442a0a6fa1afeb024bbb |
| SHA256 | b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209 |
| SHA512 | 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84 |
memory/2540-30-0x0000000000400000-0x0000000000462000-memory.dmp
memory/2276-36-0x0000000010000000-0x0000000010019000-memory.dmp
memory/2276-35-0x0000000010000000-0x0000000010019000-memory.dmp
memory/2276-32-0x0000000010000000-0x0000000010019000-memory.dmp
C:\ProgramData\remcos\logs.dat
| MD5 | 6ec66e1d29280db29a0624ca96e94725 |
| SHA1 | 091550560fd80cc08623bb11d39e61999706c31a |
| SHA256 | 7215d22047fdb55f01d11f6abe8c9376db2857c4e72520cfe8e779799f30c76a |
| SHA512 | 0919c03b3bd1f6dc7edcb18af1396e5b90d8c99dcb73c529a14f14bf5e2ce146804f2647e330ac140cb4837398b45df217a540e025ac6cbf6aac76b8048e27c2 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-11 17:41
Reported
2024-11-11 17:44
Platform
win10v2004-20241007-en
Max time kernel
148s
Max time network
142s
Command Line
Signatures
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe
"C:\Users\Admin\AppData\Local\Temp\a4e7c1a4bb830c731b60d90c8dea0f01367c3bdc74ae782edfee29507960f2e4.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | shlobo.duckdns.org | udp |
| US | 192.3.101.149:9687 | shlobo.duckdns.org | tcp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.101.3.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | geoplugin.net | udp |
| NL | 178.237.33.50:80 | geoplugin.net | tcp |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.33.237.178.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.209.201.84.in-addr.arpa | udp |
Files
C:\ProgramData\remcos\logs.dat
| MD5 | 6ec66e1d29280db29a0624ca96e94725 |
| SHA1 | 091550560fd80cc08623bb11d39e61999706c31a |
| SHA256 | 7215d22047fdb55f01d11f6abe8c9376db2857c4e72520cfe8e779799f30c76a |
| SHA512 | 0919c03b3bd1f6dc7edcb18af1396e5b90d8c99dcb73c529a14f14bf5e2ce146804f2647e330ac140cb4837398b45df217a540e025ac6cbf6aac76b8048e27c2 |