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Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
20/12/2024, 08:22
Static task
static1
Behavioral task
behavioral1
Sample
2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe
Resource
win10v2004-20241007-en
General
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Target
2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe
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Size
4.7MB
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MD5
06e4c00a7930bed72d28d32592b5c908
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SHA1
c13c125f76e52c2d979706d730fad6b58ed67406
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SHA256
2bfb82a8c64cafabfbbe50fa95781c1fcda2294ead0fb0dc7a2b87ca118cac48
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SHA512
f51af39a10f20b181207f9bd0987cb20cff013ea7fc303f69de6cd70314c3088c9cf80b8e5ad08dd5829c81afe1b7b9d19ba97abbf3fcff19d1bb752d07d4e3d
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SSDEEP
98304:tBe40bl9dRPenSX5gSoCC0DHDB1dE46V3u/s:a3NenqC8L/s
Malware Config
Signatures
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Floxif family
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Detects Floxif payload 1 IoCs
resource yara_rule behavioral2/files/0x000c000000023b57-1.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 behavioral2/files/0x000c000000023b57-1.dat acprotect -
Loads dropped DLL 5 IoCs
pid Process 3080 2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe 4932 WerFault.exe 4888 WerFault.exe 4964 WerFault.exe 4748 WerFault.exe -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\e: 2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe -
resource yara_rule behavioral2/files/0x000c000000023b57-1.dat upx behavioral2/memory/3080-4-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/3080-18-0x0000000010000000-0x0000000010030000-memory.dmp upx -
Drops file in Program Files directory 1 IoCs
description ioc Process File created C:\Program Files\Common Files\System\symsrv.dll 2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 2 IoCs
pid pid_target Process procid_target 4888 3080 WerFault.exe 81 4748 3080 WerFault.exe 81 -
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 2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3080 2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe 3080 2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe 3080 2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe 3080 2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3080 2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe"1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3080 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3080 -s 11242⤵
- Loads dropped DLL
- Program crash
PID:4888
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3080 -s 12202⤵
- Loads dropped DLL
- Program crash
PID:4748
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 3080 -ip 30801⤵
- Loads dropped DLL
PID:4932
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3080 -ip 30801⤵
- Loads dropped DLL
PID:4964
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab