Analysis Overview
SHA256
70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92
Threat Level: Known bad
The file 70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe was found to be: Known bad.
Malicious Activity Summary
Remcos
Detects executables packed with SmartAssembly
Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Detects executables packed with SmartAssembly
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-09 01:34
Signatures
Detects executables packed with SmartAssembly
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-09 01:34
Reported
2024-04-09 01:36
Platform
win7-20240221-en
Max time kernel
148s
Max time network
149s
Command Line
Signatures
Remcos
Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
| 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 |
| 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 |
| 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 |
Detects executables packed with SmartAssembly
| 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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2956 set thread context of 2896 | N/A | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe |
| PID 2516 set thread context of 2608 | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
"C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe"
C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
"C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe"
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
"C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe"
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
"C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe"
Network
| Country | Destination | Domain | Proto |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp |
Files
memory/2956-0-0x0000000000090000-0x0000000000146000-memory.dmp
memory/2956-1-0x0000000074610000-0x0000000074CFE000-memory.dmp
memory/2956-2-0x0000000004BF0000-0x0000000004C30000-memory.dmp
memory/2896-3-0x0000000000200000-0x0000000000282000-memory.dmp
memory/2896-5-0x0000000000200000-0x0000000000282000-memory.dmp
memory/2896-7-0x0000000000200000-0x0000000000282000-memory.dmp
memory/2896-8-0x0000000000200000-0x0000000000282000-memory.dmp
memory/2896-10-0x0000000000200000-0x0000000000282000-memory.dmp
memory/2896-12-0x0000000000200000-0x0000000000282000-memory.dmp
memory/2896-16-0x0000000000200000-0x0000000000282000-memory.dmp
memory/2896-14-0x0000000000200000-0x0000000000282000-memory.dmp
memory/2896-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2896-21-0x0000000000200000-0x0000000000282000-memory.dmp
memory/2956-23-0x0000000074610000-0x0000000074CFE000-memory.dmp
memory/2896-27-0x0000000000200000-0x0000000000282000-memory.dmp
memory/2896-32-0x0000000000200000-0x0000000000282000-memory.dmp
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
| MD5 | cfeae297e7b47d957e9e275ede703064 |
| SHA1 | f31ea0ebf131e7186acf028687581318642eff74 |
| SHA256 | 70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92 |
| SHA512 | ebd1a85b790743ee2784a87b0d993151d6c7a53eb1ab5f72cd79d490c56aca511ae369dd04067187ea62bbd3cde803c1bc7b1d628696aff4e3c0ce5e21051e1a |
memory/2516-40-0x0000000000B20000-0x0000000000BD6000-memory.dmp
memory/2516-41-0x0000000074220000-0x000000007490E000-memory.dmp
memory/2516-42-0x0000000002230000-0x0000000002270000-memory.dmp
memory/2608-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2516-57-0x0000000074220000-0x000000007490E000-memory.dmp
memory/2608-58-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-59-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-61-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-62-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-63-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-68-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-69-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-70-0x0000000000400000-0x0000000000482000-memory.dmp
C:\Users\Admin\AppData\Roaming\windowsfiles\logs.dat
| MD5 | 7731c8ae8a56366263c735da227eefdb |
| SHA1 | 40f4008361a49548fce8ed4b63fdd579c4739ba6 |
| SHA256 | e89b1436d18c27242fa5d158bdb9a00481b3f72d9c03520ade5f72895d60ce05 |
| SHA512 | 29955f7ecce5a79f828db3ee2832248fda8565b0760d57c3d0e2f2647ec76a6a72cb9735c520e8d25ca9b50ddb53dfb2aac558a60a3b23c68cada60729e916f5 |
memory/2608-75-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-76-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-82-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-83-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-88-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-89-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-94-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-96-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-101-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2608-102-0x0000000000400000-0x0000000000482000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-09 01:34
Reported
2024-04-09 01:37
Platform
win10v2004-20240226-en
Max time kernel
161s
Max time network
171s
Command Line
Signatures
Remcos
Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
| 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 |
| 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 |
| 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 |
Detects executables packed with SmartAssembly
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NMB4R7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\windowsfiles\\windowsfiles.exe\"" | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4004 set thread context of 2260 | N/A | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe | C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe |
| PID 4644 set thread context of 2280 | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
"C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe"
C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe
"C:\Users\Admin\AppData\Local\Temp\70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92.exe"
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
"C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe"
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
"C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4140 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| CH | 81.17.17.70:1198 | tcp | |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| CH | 81.17.17.70:1198 | tcp | |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| GB | 216.58.204.74:443 | chromewebstore.googleapis.com | tcp |
| US | 8.8.8.8:53 | 74.204.58.216.in-addr.arpa | udp |
| CH | 81.17.17.70:1198 | tcp | |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| CH | 81.17.17.70:1198 | tcp | |
| US | 8.8.8.8:53 | 200.64.52.20.in-addr.arpa | udp |
| CH | 81.17.17.70:1198 | tcp |
Files
memory/4004-0-0x0000000074ED0000-0x0000000075680000-memory.dmp
memory/4004-1-0x0000000000AC0000-0x0000000000B76000-memory.dmp
memory/4004-2-0x0000000005BB0000-0x0000000006154000-memory.dmp
memory/4004-3-0x00000000055F0000-0x0000000005600000-memory.dmp
memory/2260-4-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2260-5-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4004-7-0x0000000074ED0000-0x0000000075680000-memory.dmp
memory/2260-8-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2260-9-0x0000000000400000-0x0000000000482000-memory.dmp
C:\Users\Admin\AppData\Roaming\windowsfiles\windowsfiles.exe
| MD5 | cfeae297e7b47d957e9e275ede703064 |
| SHA1 | f31ea0ebf131e7186acf028687581318642eff74 |
| SHA256 | 70c45fc843dee69c8a55b7910d91d0b4dd371c7ea59d8eb43ff3d79c19064b92 |
| SHA512 | ebd1a85b790743ee2784a87b0d993151d6c7a53eb1ab5f72cd79d490c56aca511ae369dd04067187ea62bbd3cde803c1bc7b1d628696aff4e3c0ce5e21051e1a |
memory/2260-23-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4644-25-0x0000000004F60000-0x0000000004F70000-memory.dmp
memory/4644-24-0x00000000736D0000-0x0000000073E80000-memory.dmp
memory/2280-29-0x0000000000400000-0x0000000000482000-memory.dmp
memory/4644-31-0x00000000736D0000-0x0000000073E80000-memory.dmp
memory/2280-30-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-33-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-35-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-36-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-37-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-42-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-43-0x0000000000400000-0x0000000000482000-memory.dmp
C:\Users\Admin\AppData\Roaming\windowsfiles\logs.dat
| MD5 | 74c971344b6f26101cc7e3e3f78eae66 |
| SHA1 | 3dce0366bff1a0ca53325e7eb945cacc30fb6f18 |
| SHA256 | bb70661e44b521b39bae1d4dde4bfbcaeeeedbc8d68e5ef98afb49544eac7b33 |
| SHA512 | 7d110ed852a5f41bca312f18c9842f9ad265f332311e3419dd5681fee95c1209832bd7946f05b1315eb963c3e6c215c93d39078972f1f9db88177c98ea5f800d |
memory/2280-48-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-49-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-55-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-56-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-61-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-62-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-67-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-69-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-74-0x0000000000400000-0x0000000000482000-memory.dmp
memory/2280-75-0x0000000000400000-0x0000000000482000-memory.dmp