Analysis Overview
SHA256
bddd1f94c3af522d5fe01ba6ae9893f6b12fdf78bf131b1c771ea60e4c18d5ca
Threat Level: Likely malicious
The file bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe was found to be: Likely malicious.
Malicious Activity Summary
Blocklisted process makes network request
Deletes itself
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Adds Run key to start application
Enumerates connected drives
Writes to the Master Boot Record (MBR)
System Network Configuration Discovery: Internet Connection Discovery
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Checks processor information in registry
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-11 16:37
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-11 16:37
Reported
2024-11-11 16:39
Platform
win7-20240903-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\mqxnx.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\mqxnx.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\rshlkc\\cgzrm.dll\",GetWindowClass" | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\a: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\n: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\s: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\t: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\j: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\l: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\r: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\v: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\x: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\y: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\u: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\e: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\h: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\i: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\k: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\m: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\o: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\p: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\z: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\b: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\g: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\q: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\w: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PHYSICALDRIVE0 | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\mqxnx.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\PING.EXE | N/A |
System Network Configuration Discovery: Internet Connection Discovery
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe | N/A |
| N/A | N/A | \??\c:\mqxnx.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe
"C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\mqxnx.exe "C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
\??\c:\mqxnx.exe
c:\mqxnx.exe "C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe"
\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\rshlkc\cgzrm.dll",GetWindowClass c:\mqxnx.exe
Network
| Country | Destination | Domain | Proto |
| US | 67.229.62.198:803 | tcp | |
| US | 67.229.62.198:803 | tcp | |
| US | 67.229.62.194:3201 | tcp | |
| US | 67.229.62.197:805 | tcp | |
| US | 67.229.62.197:805 | tcp | |
| US | 67.229.62.197:805 | tcp | |
| US | 67.229.62.197:805 | tcp | |
| US | 67.229.62.194:3201 | tcp | |
| US | 67.229.62.194:3201 | tcp |
Files
memory/2248-0-0x0000000000400000-0x0000000000426000-memory.dmp
memory/2248-2-0x0000000000400000-0x0000000000426000-memory.dmp
\??\c:\mqxnx.exe
| MD5 | 8217d372df619c12e764a4a4ae352c54 |
| SHA1 | b4b9d65d4181f97c90d8382367efba3041a76290 |
| SHA256 | 3229fddf83b4fafe29233ba8d587bd8f5c48b6283620f17ec3b1226775fb75af |
| SHA512 | f35dd04a547a17a50f208b2be780e1b7291ae6734c11164cb00b530b8a68f747fdbd3f9fabe01ef0b4e140f624af23ba315141976c6799d27f07e9485961fe63 |
memory/2804-6-0x0000000000400000-0x0000000000426000-memory.dmp
\??\c:\rshlkc\cgzrm.dll
| MD5 | bec93912524f50c6f7c943716c7ef02b |
| SHA1 | 69ba8f1dd5a7d6cd94d688c691406cbd54be4486 |
| SHA256 | 032570414587af2303431e8db5d5f4223e0147f4b63a2160b97d9a6ea531bd81 |
| SHA512 | 41fb8970e9007c789227740e81a483bda806470ce25476589a3dfceddaaa60b20d890c37b56f8be83defb2a5b774dbd6c2026fc259884e8acf2971b06041f6a6 |
memory/2736-14-0x0000000010000000-0x0000000010036000-memory.dmp
memory/2736-13-0x0000000010000000-0x0000000010036000-memory.dmp
memory/2736-11-0x0000000010000000-0x0000000010036000-memory.dmp
memory/2736-15-0x0000000010033000-0x0000000010034000-memory.dmp
memory/2736-16-0x0000000010000000-0x0000000010036000-memory.dmp
memory/2736-17-0x0000000010033000-0x0000000010034000-memory.dmp
memory/2736-18-0x0000000010000000-0x0000000010036000-memory.dmp
memory/2736-22-0x0000000010000000-0x0000000010036000-memory.dmp
memory/2736-23-0x0000000010000000-0x0000000010036000-memory.dmp
memory/2736-24-0x0000000010000000-0x0000000010036000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-11 16:37
Reported
2024-11-11 16:39
Platform
win10v2004-20241007-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\bvkepl.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\bvkepl.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\mhubyerek\\ljsqjez.dll\",GetWindowClass" | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\h: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\j: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\k: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\o: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\w: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\g: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\m: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\n: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\q: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\s: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\t: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\u: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\a: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\e: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\l: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\r: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\x: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\y: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\z: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\b: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\i: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\p: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\v: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PHYSICALDRIVE0 | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\PING.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | \??\c:\bvkepl.exe | N/A |
System Network Configuration Discovery: Internet Connection Discovery
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe | N/A |
| N/A | N/A | \??\c:\bvkepl.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe
"C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\bvkepl.exe "C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
\??\c:\bvkepl.exe
c:\bvkepl.exe "C:\Users\Admin\AppData\Local\Temp\bd6bff3df5d8d2a91e352701b28399a1abdcb48008389efdc51f7ede8918b4e7N.exe"
\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\mhubyerek\ljsqjez.dll",GetWindowClass c:\bvkepl.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 67.229.62.198:803 | tcp | |
| US | 67.229.62.194:3201 | tcp | |
| US | 67.229.62.197:805 | tcp | |
| US | 67.229.62.197:805 | tcp | |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 67.229.62.197:805 | tcp | |
| US | 67.229.62.194:3201 | tcp | |
| US | 67.229.62.194:3201 | tcp | |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 67.229.62.194:3201 | tcp |
Files
memory/1124-0-0x0000000000400000-0x0000000000426000-memory.dmp
memory/1124-2-0x0000000000400000-0x0000000000426000-memory.dmp
C:\bvkepl.exe
| MD5 | 5cf198019ec22763ec6080148eb5148f |
| SHA1 | 60eb4791290de49eb4600a0fe9b3bd27583c3c2b |
| SHA256 | 6b4269b2e1255df0bdaba61b40653ad4978055503640e8dc2e6e35c485fc42b2 |
| SHA512 | 370e71a1e41182c6148ca2c2149bd78250efc092d0f1c19cc67a0935d74ee475a6a01129503795cb86a5e8c6bc2d55dc25ae00be7115c61745afaf02a3085bbf |
memory/1772-7-0x0000000000400000-0x0000000000426000-memory.dmp
C:\mhubyerek\ljsqjez.dll
| MD5 | bec93912524f50c6f7c943716c7ef02b |
| SHA1 | 69ba8f1dd5a7d6cd94d688c691406cbd54be4486 |
| SHA256 | 032570414587af2303431e8db5d5f4223e0147f4b63a2160b97d9a6ea531bd81 |
| SHA512 | 41fb8970e9007c789227740e81a483bda806470ce25476589a3dfceddaaa60b20d890c37b56f8be83defb2a5b774dbd6c2026fc259884e8acf2971b06041f6a6 |
memory/4052-10-0x0000000010000000-0x0000000010036000-memory.dmp
memory/4052-11-0x0000000000DC0000-0x0000000000DC2000-memory.dmp
memory/4052-12-0x0000000010000000-0x0000000010036000-memory.dmp
memory/4052-13-0x0000000000DC0000-0x0000000000DC2000-memory.dmp
memory/4052-15-0x0000000010000000-0x0000000010036000-memory.dmp
memory/4052-17-0x0000000010000000-0x0000000010036000-memory.dmp
memory/4052-18-0x0000000010000000-0x0000000010036000-memory.dmp