Analysis Overview
SHA256
af262121bcb7ad1a7a17c43ad57bf9febd4f01040841bc7a68f9ee25b2ad4ca8
Threat Level: Likely malicious
The file RNSM00326.7z was found to be: Likely malicious.
Malicious Activity Summary
Renames multiple (101) files with added filename extension
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
Suspicious use of SetThreadContext
Sets desktop wallpaper using registry
UPX packed file
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Modifies Control Panel
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-12 17:58
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-12 17:58
Reported
2024-11-12 17:59
Platform
win7-20240903-en
Max time kernel
61s
Max time network
59s
Command Line
Signatures
Renames multiple (101) files with added filename extension
Executes dropped EXE
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\vowetyrjpa.pre | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\donut.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\T7ZKpCH7hbtSXNvQdiNXjUwKyT4lfFgR.exe" | C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Agent.gen-2f40011df85d75556816ac944d805b6313da44c73c80778af62be5727c005811.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\yyuurujc = "C:\\Users\\Admin\\AppData\\Roaming\\Yuqpzxgi\\ldunqprujc.exe" | C:\Windows\SysWOW64\ctfmon.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wallpaper.bmp" | C:\Users\Admin\AppData\Local\Temp\T7ZKpCH7hbtSXNvQdiNXjUwKyT4lfFgR.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1984 set thread context of 1812 | N/A | C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Generic-eebac7795eb25070116802292a26962fb080356f49eb0865af34365330e28936.exe | C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Generic-eebac7795eb25070116802292a26962fb080356f49eb0865af34365330e28936.exe |
| PID 1716 set thread context of 580 | N/A | C:\Users\Admin\Desktop\00326\Trojan-Ransom.Win32.Foreign.cvjo-7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e.exe | C:\Users\Admin\Desktop\00326\Trojan-Ransom.Win32.Foreign.cvjo-7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e.exe |
| PID 2984 set thread context of 2404 | N/A | C:\Users\Admin\AppData\Local\Temp\vowetyrjpa.pre | C:\Users\Admin\AppData\Local\Temp\vowetyrjpa.pre |
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 |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\Desktop\00326\Trojan-Ransom.Win32.Foreign.cvjo-7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\Desktop\00326\Trojan-Ransom.Win32.Foreign.cvjo-7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\vowetyrjpa.pre | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\vowetyrjpa.pre | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\ctfmon.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Generic-eebac7795eb25070116802292a26962fb080356f49eb0865af34365330e28936.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\T7ZKpCH7hbtSXNvQdiNXjUwKyT4lfFgR.exe | N/A |
Modifies Control Panel
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Control Panel\Desktop\WallpaperStyle = "1" | C:\Users\Admin\AppData\Local\Temp\T7ZKpCH7hbtSXNvQdiNXjUwKyT4lfFgR.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Control Panel\Desktop\TileWallpaper = "1" | C:\Users\Admin\AppData\Local\Temp\T7ZKpCH7hbtSXNvQdiNXjUwKyT4lfFgR.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeRestorePrivilege | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| Token: 35 | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Program Files\7-Zip\7zFM.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Processes
C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\RNSM00326.7z"
C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Agent.gen-2f40011df85d75556816ac944d805b6313da44c73c80778af62be5727c005811.exe
"C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Agent.gen-2f40011df85d75556816ac944d805b6313da44c73c80778af62be5727c005811.exe"
C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Generic-eebac7795eb25070116802292a26962fb080356f49eb0865af34365330e28936.exe
"C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Generic-eebac7795eb25070116802292a26962fb080356f49eb0865af34365330e28936.exe"
C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Generic-eebac7795eb25070116802292a26962fb080356f49eb0865af34365330e28936.exe
"C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Generic-eebac7795eb25070116802292a26962fb080356f49eb0865af34365330e28936.exe"
C:\Users\Admin\AppData\Local\Temp\T7ZKpCH7hbtSXNvQdiNXjUwKyT4lfFgR.exe
"C:\Users\Admin\AppData\Local\Temp\T7ZKpCH7hbtSXNvQdiNXjUwKyT4lfFgR.exe"
C:\Users\Admin\Desktop\00326\Trojan-Ransom.Win32.Foreign.cvjo-7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e.exe
"C:\Users\Admin\Desktop\00326\Trojan-Ransom.Win32.Foreign.cvjo-7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e.exe"
C:\Users\Admin\Desktop\00326\Trojan-Ransom.Win32.Foreign.cvjo-7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e.exe
"C:\Users\Admin\Desktop\00326\Trojan-Ransom.Win32.Foreign.cvjo-7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e.exe"
C:\Windows\SysWOW64\explorer.exe
explorer.exe
C:\Users\Admin\AppData\Local\Temp\vowetyrjpa.pre
C:\Users\Admin\AppData\Local\Temp\vowetyrjpa.pre
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
C:\Users\Admin\AppData\Local\Temp\vowetyrjpa.pre
C:\Users\Admin\AppData\Local\Temp\vowetyrjpa.pre
C:\Windows\SysWOW64\ctfmon.exe
ctfmon.exe
Network
| Country | Destination | Domain | Proto |
| DE | 88.99.48.80:80 | tcp | |
| DE | 88.99.48.80:80 | tcp | |
| DE | 88.99.48.80:80 | tcp | |
| US | 8.8.8.8:53 | nvufvwieg.com | udp |
Files
C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Agent.gen-2f40011df85d75556816ac944d805b6313da44c73c80778af62be5727c005811.exe
| MD5 | e76eca2f7d0450c84417a8ac242b424c |
| SHA1 | abdb8a43a6d0bf9c60d9cd4223da787c33b341bb |
| SHA256 | 2f40011df85d75556816ac944d805b6313da44c73c80778af62be5727c005811 |
| SHA512 | 242f6e558fbe5dff48f9ca4776ffe58042741c9569d6b26ef45029dd035b1c61f5ef871d5d1645326fd816a8ef31baf1edac0e55cc4612e6d374bf834c144fa6 |
C:\Users\Admin\Documents\ImportRedo.xlsx.donut
| MD5 | 19768692b439104395d97c7556931ad7 |
| SHA1 | 5cde1a8e12d2b80d46164ba8f31cf4e29af686f3 |
| SHA256 | 6320e4c6e078eaa712948f3da51aea443cc70e759daaea4215b532d3f9f39681 |
| SHA512 | da7874402c6a995405e0a4c93d3c6225d324fd16a05b5105a2ed9c6a343dd08d27a4326f4c6cc70d752532f0fb629a97f42e18e131ed41f114b6d641186f043c |
C:\Users\Admin\Documents\decrypt.txt
| MD5 | 97595afa89a4d8adb619ab8f6332a4ba |
| SHA1 | a9d230166a8f1d1ce5dc144d9cb4e612867770ca |
| SHA256 | 16f9b995526bcfb6f5d4c714ceea9188224fdc00ef250aca848793b3a85bb20f |
| SHA512 | 58f18f2eed1d589cd912ed91da6cba6daf11277880d2469900b507cb65d46b31578cc188aad2a6a980c40c7fc4cea1952b3d5aa1df9d4bf86a5861f94a7b27e3 |
C:\Users\Admin\Desktop\00326\HEUR-Trojan-Ransom.Win32.Generic-eebac7795eb25070116802292a26962fb080356f49eb0865af34365330e28936.exe
| MD5 | 7043a9b4fd3687dd2ef2e18fd2d53e92 |
| SHA1 | ca0dc27097aab46d75876793f2dc94d8cc157ec1 |
| SHA256 | eebac7795eb25070116802292a26962fb080356f49eb0865af34365330e28936 |
| SHA512 | e9ab84d1c2991a4ba4e0fb009f3ed47b73641461564fbd5a886303f3fcca6db5b628fb0c8e6a9bab7b59c52263870ebd60fa7c79e994a810a9edc86673c390c8 |
memory/1812-74-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1812-76-0x0000000000400000-0x0000000000412000-memory.dmp
memory/1812-77-0x0000000000400000-0x0000000000412000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\T7ZKpCH7hbtSXNvQdiNXjUwKyT4lfFgR.exe
| MD5 | f5289f5e2b26356e63f90a07055d3394 |
| SHA1 | b45c93ff2db91b192698d9ac7b6bcabdc6857e3b |
| SHA256 | b7b4a5f4a857b3ae0c9bdd64f5408d562657bf6d993003f50b5d39094dcf476b |
| SHA512 | 174c21ed3db973b5fa813950ac436294850e0791a74f945a99bb283a3516ab9eaf2e93b214b4ccb0c0dec131a292e9aea2cde45ba735d5e9d65077f6cf0c8e0d |
C:\Users\Admin\Desktop\00326\Trojan-Ransom.Win32.Foreign.cvjo-7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e.exe
| MD5 | 1b2d2a4b97c7c2727d571bbf9376f54f |
| SHA1 | 1fc29938ec5c209ba900247d2919069b320d33b0 |
| SHA256 | 7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e |
| SHA512 | 506fc96423e5e2e38078806591e09a6eb3cf924eb748af528f7315aa0b929890823798a3ef2a5809c14023c3ff8a3db36277bc90c7b099218422aafa4e0c2ee0 |
memory/580-146-0x0000000000400000-0x0000000000414000-memory.dmp
memory/580-143-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/580-141-0x0000000000400000-0x0000000000414000-memory.dmp
memory/580-139-0x0000000000400000-0x0000000000414000-memory.dmp
memory/580-137-0x0000000000400000-0x0000000000414000-memory.dmp
memory/580-147-0x0000000000400000-0x0000000000414000-memory.dmp
memory/580-148-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1740-149-0x000000007EFA0000-0x000000007EFAE000-memory.dmp
memory/1740-151-0x000000007EFA0000-0x000000007EFAE000-memory.dmp
memory/580-152-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2316-163-0x0000000140000000-0x00000001405E8000-memory.dmp
memory/2316-164-0x0000000140000000-0x00000001405E8000-memory.dmp
memory/1740-175-0x000000007EFA0000-0x000000007EFAE000-memory.dmp
memory/2404-178-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2948-181-0x000000007EFA0000-0x000000007EFAE000-memory.dmp
memory/2948-184-0x000000007EFA0000-0x000000007EFAE000-memory.dmp
memory/2948-189-0x000000007EFA0000-0x000000007EFAE000-memory.dmp
memory/2316-190-0x0000000140000000-0x00000001405E8000-memory.dmp