Analysis
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max time kernel
111s -
max time network
57s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
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Target
Virus.Win32.Floxif.dll
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Size
130KB
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MD5
4cc8f999f51c0e46de0aa373311d3890
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SHA1
32e59c3b745f22615a226542349ce4d9af646a90
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SHA256
beea4ad6f5ffba5b9a8bf0b05634865ac9440e82e10b5947324281631c1eac4a
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SHA512
52b6721cb58b3a612e5d72c08ed1c898ede4465b328cfd01f2375d146b64afb6e0c5311739c64a80a827709fb61884db0fc284c74a3f57c6a3ce0db67d823c3f
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SSDEEP
3072:FS52WLZ6AnTBfiFeT+W2lQBV+UdE+rECWp7hK/r:m2WLtnTBqFeT5BV+UdvrEFp7hKj
Malware Config
Signatures
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Detects Floxif payload 1 IoCs
resource yara_rule behavioral1/files/0x000a000000012233-1.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.
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ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral1/files/0x000a000000012233-1.dat acprotect -
Loads dropped DLL 2 IoCs
pid Process 1124 rundll32.exe 2428 WerFault.exe -
resource yara_rule behavioral1/memory/1124-3-0x00000000001A0000-0x00000000001D0000-memory.dmp upx behavioral1/files/0x000a000000012233-1.dat upx behavioral1/memory/1124-8-0x00000000001A0000-0x00000000001D0000-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 2428 1124 WerFault.exe 29 -
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 1124 rundll32.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 488 wrote to memory of 1124 488 rundll32.exe 29 PID 488 wrote to memory of 1124 488 rundll32.exe 29 PID 488 wrote to memory of 1124 488 rundll32.exe 29 PID 488 wrote to memory of 1124 488 rundll32.exe 29 PID 488 wrote to memory of 1124 488 rundll32.exe 29 PID 488 wrote to memory of 1124 488 rundll32.exe 29 PID 488 wrote to memory of 1124 488 rundll32.exe 29 PID 1124 wrote to memory of 2428 1124 rundll32.exe 30 PID 1124 wrote to memory of 2428 1124 rundll32.exe 30 PID 1124 wrote to memory of 2428 1124 rundll32.exe 30 PID 1124 wrote to memory of 2428 1124 rundll32.exe 30
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\Virus.Win32.Floxif.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:488 -
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
- Suspicious use of WriteProcessMemory
PID:1124 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1124 -s 3323⤵
- Loads dropped DLL
- Program crash
PID:2428
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab