Analysis Overview
SHA256
bbcd72e82d0511c6fda963e60a70d942e39e36e37ac225f75f3f5b9aa96b3e17
Threat Level: Known bad
The file BCBP-FT-TRANSFER-287287912.scr.exe was found to be: Known bad.
Malicious Activity Summary
NanoCore
Executes dropped EXE
Loads dropped DLL
Checks whether UAC is enabled
Adds Run key to start application
Suspicious use of SetThreadContext
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
NSIS installer
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-04 19:01
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
NSIS installer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-04 19:01
Reported
2023-12-04 19:03
Platform
win10v2004-20231127-en
Max time kernel
144s
Max time network
154s
Command Line
Signatures
NanoCore
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3028534956-1709433221-1313273668-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pluuqyyiee = "C:\\Users\\Admin\\AppData\\Roaming\\ueeajjsoxxhdd\\miirbwwgp.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\gpaxjkfx.exe\" " | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAS Host = "C:\\Program Files (x86)\\NAS Host\\nashost.exe" | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4660 set thread context of 3920 | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\NAS Host\nashost.exe | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| File opened for modification | C:\Program Files (x86)\NAS Host\nashost.exe | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\BCBP-FT-TRANSFER-287287912.scr.exe
"C:\Users\Admin\AppData\Local\Temp\BCBP-FT-TRANSFER-287287912.scr.exe"
C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
"C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe"
C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
"C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 163.252.72.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 198.1.85.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 161.129.47.59:54980 | multipleentry90dayscontroller.homingbeacon.net | tcp |
| US | 8.8.8.8:53 | 59.47.129.161.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 | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 192.240.110.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.178.89.13.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
| MD5 | dcb26c9bfc1b5d7ce5d51c3b87c37daa |
| SHA1 | 824e47ae0d2ef729977f162c019aba515575eabf |
| SHA256 | cb9f656521d692c898a9a5439682241d82087d40f3a949639b595f3fe2da106d |
| SHA512 | de22705d5410b7d4c24fdcfc32a87280f16ced3aa7eee860cdc8855d763916e3dab4ac01190444f51f3f67a7bde4451be0b9d9dd23922fcd983c0cde8515ac35 |
C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
| MD5 | dcb26c9bfc1b5d7ce5d51c3b87c37daa |
| SHA1 | 824e47ae0d2ef729977f162c019aba515575eabf |
| SHA256 | cb9f656521d692c898a9a5439682241d82087d40f3a949639b595f3fe2da106d |
| SHA512 | de22705d5410b7d4c24fdcfc32a87280f16ced3aa7eee860cdc8855d763916e3dab4ac01190444f51f3f67a7bde4451be0b9d9dd23922fcd983c0cde8515ac35 |
memory/4660-5-0x0000000000400000-0x0000000000431000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\xdxmt.s
| MD5 | f4aa88a2bdd058cf0f9263c8d9207102 |
| SHA1 | 399a192bbac02ec52cfee904aa1ee2fad0369aad |
| SHA256 | 2bcb37bd3f65d6135c329e502c2ef0909572c3fa480947cc6fe23252d41cdf33 |
| SHA512 | 9e3428b01280b92af142db29b9c9ca6ede2a210a8617190bbecaf7504c661f6cab66d10926dac49b9864417f9667a867109fd312f012f9a487388a622bde80de |
memory/3920-8-0x0000000000400000-0x000000000044A000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
| MD5 | dcb26c9bfc1b5d7ce5d51c3b87c37daa |
| SHA1 | 824e47ae0d2ef729977f162c019aba515575eabf |
| SHA256 | cb9f656521d692c898a9a5439682241d82087d40f3a949639b595f3fe2da106d |
| SHA512 | de22705d5410b7d4c24fdcfc32a87280f16ced3aa7eee860cdc8855d763916e3dab4ac01190444f51f3f67a7bde4451be0b9d9dd23922fcd983c0cde8515ac35 |
memory/4660-11-0x0000000000400000-0x0000000000431000-memory.dmp
memory/3920-10-0x0000000000400000-0x000000000044A000-memory.dmp
memory/3920-12-0x0000000000400000-0x000000000044A000-memory.dmp
memory/3920-13-0x0000000000400000-0x000000000044A000-memory.dmp
memory/3920-14-0x0000000073BC0000-0x0000000074171000-memory.dmp
memory/3920-16-0x0000000002410000-0x0000000002420000-memory.dmp
memory/3920-15-0x0000000073BC0000-0x0000000074171000-memory.dmp
memory/3920-17-0x0000000002410000-0x0000000002420000-memory.dmp
memory/3920-18-0x0000000002410000-0x0000000002420000-memory.dmp
memory/3920-25-0x0000000073BC0000-0x0000000074171000-memory.dmp
memory/3920-26-0x0000000002410000-0x0000000002420000-memory.dmp
memory/3920-27-0x0000000002410000-0x0000000002420000-memory.dmp
memory/3920-29-0x0000000002410000-0x0000000002420000-memory.dmp
memory/3920-30-0x0000000002410000-0x0000000002420000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-04 19:01
Reported
2023-12-04 19:03
Platform
win7-20231129-en
Max time kernel
145s
Max time network
150s
Command Line
Signatures
NanoCore
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\BCBP-FT-TRANSFER-287287912.scr.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\pluuqyyiee = "C:\\Users\\Admin\\AppData\\Roaming\\ueeajjsoxxhdd\\miirbwwgp.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\gpaxjkfx.exe\" " | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Service = "C:\\Program Files (x86)\\TCP Service\\tcpsv.exe" | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1632 set thread context of 2156 | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\TCP Service\tcpsv.exe | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| File opened for modification | C:\Program Files (x86)\TCP Service\tcpsv.exe | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\BCBP-FT-TRANSFER-287287912.scr.exe
"C:\Users\Admin\AppData\Local\Temp\BCBP-FT-TRANSFER-287287912.scr.exe"
C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
"C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe"
C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
"C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.4.4:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.8.8:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.8.8:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.4.4:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.8.8:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.8.8:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.4.4:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.8.8:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.8.8:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.4.4:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
| US | 8.8.8.8:53 | multipleentry90dayscontroller.homingbeacon.net | udp |
Files
\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
| MD5 | dcb26c9bfc1b5d7ce5d51c3b87c37daa |
| SHA1 | 824e47ae0d2ef729977f162c019aba515575eabf |
| SHA256 | cb9f656521d692c898a9a5439682241d82087d40f3a949639b595f3fe2da106d |
| SHA512 | de22705d5410b7d4c24fdcfc32a87280f16ced3aa7eee860cdc8855d763916e3dab4ac01190444f51f3f67a7bde4451be0b9d9dd23922fcd983c0cde8515ac35 |
C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
| MD5 | dcb26c9bfc1b5d7ce5d51c3b87c37daa |
| SHA1 | 824e47ae0d2ef729977f162c019aba515575eabf |
| SHA256 | cb9f656521d692c898a9a5439682241d82087d40f3a949639b595f3fe2da106d |
| SHA512 | de22705d5410b7d4c24fdcfc32a87280f16ced3aa7eee860cdc8855d763916e3dab4ac01190444f51f3f67a7bde4451be0b9d9dd23922fcd983c0cde8515ac35 |
memory/1632-6-0x0000000000400000-0x0000000000431000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
| MD5 | dcb26c9bfc1b5d7ce5d51c3b87c37daa |
| SHA1 | 824e47ae0d2ef729977f162c019aba515575eabf |
| SHA256 | cb9f656521d692c898a9a5439682241d82087d40f3a949639b595f3fe2da106d |
| SHA512 | de22705d5410b7d4c24fdcfc32a87280f16ced3aa7eee860cdc8855d763916e3dab4ac01190444f51f3f67a7bde4451be0b9d9dd23922fcd983c0cde8515ac35 |
C:\Users\Admin\AppData\Local\Temp\xdxmt.s
| MD5 | f4aa88a2bdd058cf0f9263c8d9207102 |
| SHA1 | 399a192bbac02ec52cfee904aa1ee2fad0369aad |
| SHA256 | 2bcb37bd3f65d6135c329e502c2ef0909572c3fa480947cc6fe23252d41cdf33 |
| SHA512 | 9e3428b01280b92af142db29b9c9ca6ede2a210a8617190bbecaf7504c661f6cab66d10926dac49b9864417f9667a867109fd312f012f9a487388a622bde80de |
\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
| MD5 | dcb26c9bfc1b5d7ce5d51c3b87c37daa |
| SHA1 | 824e47ae0d2ef729977f162c019aba515575eabf |
| SHA256 | cb9f656521d692c898a9a5439682241d82087d40f3a949639b595f3fe2da106d |
| SHA512 | de22705d5410b7d4c24fdcfc32a87280f16ced3aa7eee860cdc8855d763916e3dab4ac01190444f51f3f67a7bde4451be0b9d9dd23922fcd983c0cde8515ac35 |
memory/2156-11-0x0000000000400000-0x000000000044A000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\gpaxjkfx.exe
| MD5 | dcb26c9bfc1b5d7ce5d51c3b87c37daa |
| SHA1 | 824e47ae0d2ef729977f162c019aba515575eabf |
| SHA256 | cb9f656521d692c898a9a5439682241d82087d40f3a949639b595f3fe2da106d |
| SHA512 | de22705d5410b7d4c24fdcfc32a87280f16ced3aa7eee860cdc8855d763916e3dab4ac01190444f51f3f67a7bde4451be0b9d9dd23922fcd983c0cde8515ac35 |
memory/1632-14-0x0000000000400000-0x0000000000431000-memory.dmp
memory/2156-15-0x0000000000400000-0x000000000044A000-memory.dmp
memory/2156-16-0x0000000000400000-0x000000000044A000-memory.dmp
memory/2156-17-0x0000000074B30000-0x00000000750DB000-memory.dmp
memory/2156-18-0x0000000001DF0000-0x0000000001E30000-memory.dmp
memory/2156-19-0x0000000074B30000-0x00000000750DB000-memory.dmp
memory/2156-20-0x0000000001DF0000-0x0000000001E30000-memory.dmp
C:\Program Files (x86)\TCP Service\tcpsv.exe
| MD5 | dcb26c9bfc1b5d7ce5d51c3b87c37daa |
| SHA1 | 824e47ae0d2ef729977f162c019aba515575eabf |
| SHA256 | cb9f656521d692c898a9a5439682241d82087d40f3a949639b595f3fe2da106d |
| SHA512 | de22705d5410b7d4c24fdcfc32a87280f16ced3aa7eee860cdc8855d763916e3dab4ac01190444f51f3f67a7bde4451be0b9d9dd23922fcd983c0cde8515ac35 |
memory/2156-24-0x0000000074B30000-0x00000000750DB000-memory.dmp
memory/2156-25-0x0000000074B30000-0x00000000750DB000-memory.dmp