Analysis Overview
SHA256
0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a
Threat Level: Likely malicious
The file 0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a was found to be: Likely malicious.
Malicious Activity Summary
Detects executables containing base64 encoded User Agent
Blocklisted process makes network request
Loads dropped DLL
Executes dropped EXE
Deletes itself
Reads user/profile data of web browsers
Enumerates connected drives
Writes to the Master Boot Record (MBR)
Adds Run key to start application
Unsigned PE
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Runs ping.exe
Suspicious use of WriteProcessMemory
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-04 18:34
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-04 18:34
Reported
2024-06-04 18:37
Platform
win7-20240508-en
Max time kernel
142s
Max time network
150s
Command Line
Signatures
Detects executables containing base64 encoded User Agent
| 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 |
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 |
| N/A | N/A | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\fxvtd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\fxvtd.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-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\floyh\\nqxgq.dll\",GetWindowClass" | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| 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) | \??\r: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\x: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\z: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\a: | \??\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) | \??\q: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\t: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\y: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\e: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\w: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\l: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\i: | \??\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) | \??\p: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\s: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\u: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\v: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\h: | \??\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 |
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\0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a.exe | N/A |
| N/A | N/A | \??\c:\fxvtd.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a.exe
"C:\Users\Admin\AppData\Local\Temp\0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\fxvtd.exe "C:\Users\Admin\AppData\Local\Temp\0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
\??\c:\fxvtd.exe
c:\fxvtd.exe "C:\Users\Admin\AppData\Local\Temp\0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a.exe"
\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\floyh\nqxgq.dll",GetWindowClass c:\fxvtd.exe
Network
| Country | Destination | Domain | Proto |
| US | 67.198.215.210:803 | tcp | |
| US | 67.198.215.210:803 | tcp | |
| US | 67.198.215.210:3204 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.210:3204 | tcp | |
| US | 67.198.215.210:3204 | tcp | |
| US | 67.198.215.210:3204 | tcp |
Files
memory/3052-0-0x0000000000400000-0x000000000041D000-memory.dmp
memory/3052-2-0x0000000000400000-0x000000000041D000-memory.dmp
\??\c:\fxvtd.exe
| MD5 | 3c4b0d66502d8af8610849b74f13b22e |
| SHA1 | a7197ad263ce596815f5695614ae9f967770b204 |
| SHA256 | fc85cf233448e0fc89437614c745b720b428fa49d58445afe3fdc43d36ecb257 |
| SHA512 | da9c81dc5a54b707d1336da79ad089a4328568ed93fc4f628e0535a7876019bbcd89a085861e879a9eb5116d22687dca2a188761960d694839d3e52d2b14ea61 |
memory/2008-6-0x0000000000160000-0x000000000017D000-memory.dmp
memory/2008-5-0x0000000000160000-0x000000000017D000-memory.dmp
memory/2188-8-0x0000000000400000-0x000000000041D000-memory.dmp
\??\c:\floyh\nqxgq.dll
| MD5 | 06c39ca503305efbf7274f6bf9394f28 |
| SHA1 | bec4daadab49f1f58a951d9cc1b2d7c1e2ae8450 |
| SHA256 | 19f33ba32f20dae1ea6a6b87824dc8e3e74527b34f9cd01a6e4f67e3e79dd867 |
| SHA512 | e6c8b19892b5ce5108909824ad37b0fe0eed2459939f0249133bf3e3c1470308d6d51aa3fbf42aabcbf37bb2412c8a27bff445e23dc0495910ec5f445055d931 |
memory/3040-14-0x0000000010000000-0x0000000010036000-memory.dmp
memory/3040-15-0x0000000010000000-0x0000000010036000-memory.dmp
memory/3040-16-0x0000000010033000-0x0000000010034000-memory.dmp
memory/3040-17-0x0000000010000000-0x0000000010036000-memory.dmp
memory/3040-18-0x0000000010000000-0x0000000010036000-memory.dmp
memory/3040-20-0x0000000010033000-0x0000000010034000-memory.dmp
memory/3040-23-0x0000000010000000-0x0000000010036000-memory.dmp
memory/3040-24-0x0000000010000000-0x0000000010036000-memory.dmp
memory/3040-25-0x0000000010000000-0x0000000010036000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-04 18:34
Reported
2024-06-04 18:37
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
151s
Command Line
Signatures
Detects executables containing base64 encoded User Agent
| 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 |
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:\rjvbiprzp.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\rjvbiprzp.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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\jswzo\\dgoan.dll\",GetWindowClass" | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\e: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\i: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\m: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\p: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\r: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\w: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\a: | \??\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) | \??\t: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\u: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\h: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\k: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\n: | \??\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) | \??\j: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\l: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\o: | \??\c:\windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\s: | \??\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 |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PHYSICALDRIVE0 | \??\c:\windows\SysWOW64\rundll32.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\0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a.exe | N/A |
| N/A | N/A | \??\c:\rjvbiprzp.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a.exe
"C:\Users\Admin\AppData\Local\Temp\0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\rjvbiprzp.exe "C:\Users\Admin\AppData\Local\Temp\0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a.exe"
C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
\??\c:\rjvbiprzp.exe
c:\rjvbiprzp.exe "C:\Users\Admin\AppData\Local\Temp\0bcfb7bc4f7dda6da5c6d7949b5fbce030fd9f00dec0be09ab312ffa0ae43c3a.exe"
\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\jswzo\dgoan.dll",GetWindowClass c:\rjvbiprzp.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.160.190.20.in-addr.arpa | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| NL | 23.62.61.129:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 129.61.62.23.in-addr.arpa | udp |
| US | 67.198.215.210:803 | tcp | |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 67.198.215.210:3204 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.211:805 | tcp | |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.121.18.2.in-addr.arpa | udp |
| US | 67.198.215.211:805 | tcp | |
| US | 67.198.215.210:3204 | tcp | |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 67.198.215.210:3204 | tcp | |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 67.198.215.210:3204 | tcp | |
| US | 8.8.8.8:53 | 85.65.42.20.in-addr.arpa | udp |
Files
memory/3320-0-0x0000000000400000-0x000000000041D000-memory.dmp
memory/3320-2-0x0000000000400000-0x000000000041D000-memory.dmp
C:\rjvbiprzp.exe
| MD5 | 05e8e827827aeca9fadbc64337a583f6 |
| SHA1 | c43eb031d282845a06a3b5b074c96075b74be245 |
| SHA256 | c750944dfd4abefe914fde7ee92ac9ccaa0ee26e8a348a8e3bbc58579bc0f83c |
| SHA512 | b6ea7e68b63efa2587b23d62a1150e5a16d893074aa37ed6874cc85a3ff0840a2cec5c6e3e4df95a0f39c7537c016a745dd03c7ed3cf5c0695532ce1221c93bc |
memory/3812-6-0x0000000000400000-0x000000000041D000-memory.dmp
memory/3812-8-0x0000000000400000-0x000000000041D000-memory.dmp
\??\c:\jswzo\dgoan.dll
| MD5 | 06c39ca503305efbf7274f6bf9394f28 |
| SHA1 | bec4daadab49f1f58a951d9cc1b2d7c1e2ae8450 |
| SHA256 | 19f33ba32f20dae1ea6a6b87824dc8e3e74527b34f9cd01a6e4f67e3e79dd867 |
| SHA512 | e6c8b19892b5ce5108909824ad37b0fe0eed2459939f0249133bf3e3c1470308d6d51aa3fbf42aabcbf37bb2412c8a27bff445e23dc0495910ec5f445055d931 |
memory/2484-11-0x0000000010000000-0x0000000010036000-memory.dmp
memory/2484-12-0x0000000000ED0000-0x0000000000ED2000-memory.dmp
memory/2484-13-0x0000000010000000-0x0000000010036000-memory.dmp
memory/2484-15-0x0000000000ED0000-0x0000000000ED2000-memory.dmp
memory/2484-16-0x0000000010000000-0x0000000010036000-memory.dmp
memory/2484-18-0x0000000010000000-0x0000000010036000-memory.dmp