Analysis
-
max time kernel
94s -
max time network
96s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
16-09-2024 17:26
Static task
static1
Behavioral task
behavioral1
Sample
Virus.Win32.Floxif.dll
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Virus.Win32.Floxif.dll
Resource
win10v2004-20240802-en
General
-
Target
Virus.Win32.Floxif.dll
-
Size
130KB
-
MD5
4cc8f999f51c0e46de0aa373311d3890
-
SHA1
32e59c3b745f22615a226542349ce4d9af646a90
-
SHA256
beea4ad6f5ffba5b9a8bf0b05634865ac9440e82e10b5947324281631c1eac4a
-
SHA512
52b6721cb58b3a612e5d72c08ed1c898ede4465b328cfd01f2375d146b64afb6e0c5311739c64a80a827709fb61884db0fc284c74a3f57c6a3ce0db67d823c3f
-
SSDEEP
3072:FS52WLZ6AnTBfiFeT+W2lQBV+UdE+rECWp7hK/r:m2WLtnTBqFeT5BV+UdvrEFp7hKj
Malware Config
Signatures
-
Detects Floxif payload 1 IoCs
resource yara_rule behavioral2/files/0x000800000002345a-1.dat floxif -
Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
-
ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral2/files/0x000800000002345a-1.dat acprotect -
Loads dropped DLL 4 IoCs
pid Process 4424 rundll32.exe 4424 rundll32.exe 4780 WerFault.exe 436 WerFault.exe -
resource yara_rule behavioral2/files/0x000800000002345a-1.dat upx behavioral2/memory/4424-4-0x0000000000BC0000-0x0000000000BF0000-memory.dmp upx behavioral2/memory/4424-13-0x0000000000BC0000-0x0000000000BF0000-memory.dmp upx -
Drops file in Program Files directory 1 IoCs
description ioc Process File created C:\Program Files\Common Files\System\symsrv.dll rundll32.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 436 4424 WerFault.exe 82 -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4424 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1428 wrote to memory of 4424 1428 rundll32.exe 82 PID 1428 wrote to memory of 4424 1428 rundll32.exe 82 PID 1428 wrote to memory of 4424 1428 rundll32.exe 82
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\Virus.Win32.Floxif.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1428 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\Virus.Win32.Floxif.dll,#12⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4424 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4424 -s 7123⤵
- Loads dropped DLL
- Program crash
PID:436
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4424 -ip 44241⤵
- Loads dropped DLL
PID:4780
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab