Analysis Overview
SHA256
881fa82e7cd7a08691f6d8795c37e3edf2d9c134ee1dc01d3251775a0f04c503
Threat Level: Known bad
The file TrojanDropper.Win32.Floxif-881fa82e7cd7a08691f6d8795c37e3edf2d9c134ee1dc01d3251775a0f04c503N was found to be: Known bad.
Malicious Activity Summary
Floxif family
Detects Floxif payload
Blocklisted process makes network request
Event Triggered Execution: AppInit DLLs
UPX packed file
ACProtect 1.3x - 1.4x DLL software
Enumerates connected drives
Network Service Discovery
Unsigned PE
Program crash
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-16 12:08
Signatures
Detects Floxif payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Floxif family
ACProtect 1.3x - 1.4x DLL software
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| 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 |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-16 12:08
Reported
2024-09-16 12:10
Platform
win7-20240903-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 |
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 |
| N/A | N/A | N/A | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\e: | C:\Windows\SysWOW64\rundll32.exe | N/A |
Network Service Discovery
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.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\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.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:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.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 |
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\TrojanDropper.Win32.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\TrojanDropper.Win32.dll,#1
C:\Windows\SysWOW64\arp.exe
arp -a
C:\Windows\SysWOW64\arp.exe
arp -s 10.127.0.1 fa-72-db-1f-a1-21
C:\Windows\SysWOW64\arp.exe
arp -s 10.127.255.255 6d-b0-e8-7d-15-6f
C:\Windows\SysWOW64\arp.exe
arp -s 37.27.61.180 7b-87-0d-d8-8a-69
C:\Windows\SysWOW64\arp.exe
arp -s 224.0.0.22 11-f8-4a-d8-8e-63
C:\Windows\SysWOW64\arp.exe
arp -s 224.0.0.251 ea-57-8b-49-2a-cf
C:\Windows\SysWOW64\arp.exe
arp -s 224.0.0.252 34-47-27-18-60-3b
C:\Windows\SysWOW64\arp.exe
arp -s 239.255.255.250 8a-db-fd-1f-c0-f6
C:\Windows\SysWOW64\arp.exe
arp -s 255.255.255.255 30-b9-45-b7-5d-95
C:\Windows\SysWOW64\arp.exe
arp -d
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.baidu.com | udp |
| HK | 103.235.47.188:80 | www.baidu.com | tcp |
| US | 8.8.8.8:53 | 5isohu.com | udp |
| US | 8.8.8.8:53 | www.aieov.com | udp |
| US | 45.79.19.196:80 | www.aieov.com | tcp |
| US | 45.79.19.196:80 | www.aieov.com | tcp |
Files
memory/2764-1-0x0000000010000000-0x0000000010033000-memory.dmp
memory/2764-2-0x0000000010000000-0x0000000010033000-memory.dmp
memory/2764-0-0x0000000010000000-0x0000000010033000-memory.dmp
memory/2764-5-0x0000000010000000-0x0000000010033000-memory.dmp
memory/2764-6-0x0000000010000000-0x0000000010033000-memory.dmp
memory/2764-7-0x0000000010000000-0x0000000010033000-memory.dmp
memory/2764-14-0x0000000010000000-0x0000000010033000-memory.dmp
memory/2764-15-0x0000000010000000-0x0000000010033000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-16 12:08
Reported
2024-09-16 12:10
Platform
win10v2004-20240802-en
Max time kernel
115s
Max time network
120s
Command Line
Signatures
Event Triggered Execution: AppInit DLLs
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Network Service Discovery
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\arp.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\arp.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:\Windows\SysWOW64\arp.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 WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\TrojanDropper.Win32.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\TrojanDropper.Win32.dll,#1
C:\Windows\SysWOW64\arp.exe
arp -a
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3536 -ip 3536
C:\Windows\SysWOW64\arp.exe
arp -s 10.127.0.1 4a-1f-70-1d-31-19
C:\Windows\SysWOW64\arp.exe
arp -s 10.127.255.255 63-08-c0-75-15-91
C:\Windows\SysWOW64\arp.exe
arp -s 37.27.61.184 c9-79-91-4c-eb-ae
C:\Windows\SysWOW64\arp.exe
arp -s 224.0.0.22 27-c5-98-c9-bd-2c
C:\Windows\SysWOW64\arp.exe
arp -s 224.0.0.251 5c-99-9d-00-a3-34
C:\Windows\SysWOW64\arp.exe
arp -s 224.0.0.252 43-ee-ab-06-36-5c
C:\Windows\SysWOW64\arp.exe
arp -s 239.255.255.250 c2-25-83-a6-86-d9
C:\Windows\SysWOW64\arp.exe
arp -s 255.255.255.255 b4-e9-28-57-96-d3
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3536 -s 704
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 --field-trial-handle=3032,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4440 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.31.126.40.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 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 65.139.73.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.140.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
Files
memory/3536-0-0x0000000010000000-0x0000000010033000-memory.dmp
memory/3536-2-0x0000000010000000-0x0000000010033000-memory.dmp