floxif | 5114474b47200f0e18531c4d5c5fb03152d4c8cc2e4edbe51066755041435f9a

Analysis

max time kernel
117s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
19-11-2024 22:41

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General

Target

5114474b47200f0e18531c4d5c5fb03152d4c8cc2e4edbe51066755041435f9a.dll
Size

617KB
MD5

b768553773ff604911eb16a00493ad28
SHA1

1fc324d139ce2cb3260c110379d720e3c17f84b2
SHA256

5114474b47200f0e18531c4d5c5fb03152d4c8cc2e4edbe51066755041435f9a
SHA512

06b38ed906d9145f8475685e3fd04780b4668f5a4e2ec08d370f27cd43481fa55a9e3466d6a9f1e7945dc2bbb3edc18a738c642c6400ba5c682a60751cd7d827
SSDEEP

12288:bgdiOT1X3qv96CqjSZy+56EGZai7dnBD0FJo8F9w0GfoH/fzvitbDT7BjvrEH7T:bgdiODSZyKs/b0flFFGAHjv+ZrEH7T

Score

10^/10

floxif backdoor discovery trojan upx

Malware Config

Signatures

Floxif family
floxif
Floxif, Floodfix
Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.
backdoor trojan floxif

Detects Floxif payload 1 IoCs

backdoor

resource	yara_rule
behavioral1/files/0x000b000000012263-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000b000000012263-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2568	regsvr32.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2568-3-0x0000000000360000-0x0000000000390000-memory.dmp	upx
behavioral1/files/0x000b000000012263-1.dat	upx
behavioral1/memory/2568-6-0x0000000000360000-0x0000000000390000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	regsvr32.exe

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E7A20E0B-E3CA-4225-B632-CE70A5FCBCF4}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E7A20E0B-E3CA-4225-B632-CE70A5FCBCF4}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{732D8BD7-5953-4329-8285-108AE7911BAA}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B9E80ACC-49FB-435F-B1C6-9A9507855860}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B9E80ACC-49FB-435F-B1C6-9A9507855860}\ProgID\ = "MarsCore.Mars.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}\TypeLib\ = "{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{732D8BD7-5953-4329-8285-108AE7911BAA}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B9E80ACC-49FB-435F-B1C6-9A9507855860}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}\TypeLib\ = "{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.UsageStorage2.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.Mars\CurVer\ = "MarsCore.Mars.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E7A20E0B-E3CA-4225-B632-CE70A5FCBCF4}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E7A20E0B-E3CA-4225-B632-CE70A5FCBCF4}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E7A20E0B-E3CA-4225-B632-CE70A5FCBCF4}\TypeLib\ = "{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.Mars\ = "Mars Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E7A20E0B-E3CA-4225-B632-CE70A5FCBCF4}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{732D8BD7-5953-4329-8285-108AE7911BAA}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{732D8BD7-5953-4329-8285-108AE7911BAA}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B9E80ACC-49FB-435F-B1C6-9A9507855860}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}\ = "IUsageStorage2"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}\TypeLib\ = "{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.UsageStorage2	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.Mars.1\ = "Mars Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E7A20E0B-E3CA-4225-B632-CE70A5FCBCF4}\ = "IUsageStorage"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}\ = "IMars"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{732D8BD7-5953-4329-8285-108AE7911BAA}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.UsageStorage2\ = "UsageStorage2 Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.UsageStorage2\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.UsageStorage2\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{732D8BD7-5953-4329-8285-108AE7911BAA}\ProgID\ = "MarsCore.UsageStorage2.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.Mars\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B9E80ACC-49FB-435F-B1C6-9A9507855860}\TypeLib\ = "{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.UsageStorage2.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B9E80ACC-49FB-435F-B1C6-9A9507855860}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E7A20E0B-E3CA-4225-B632-CE70A5FCBCF4}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E7A20E0B-E3CA-4225-B632-CE70A5FCBCF4}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}\ = "IUsageStorage2"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}\ = "IMars"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{732D8BD7-5953-4329-8285-108AE7911BAA}\TypeLib\ = "{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B9E80ACC-49FB-435F-B1C6-9A9507855860}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}\1.0\ = "MarsCore 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{09A9FD31-0B12-4CEF-BBE0-7980ED7CB243}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E7A20E0B-E3CA-4225-B632-CE70A5FCBCF4}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\MarsCore.UsageStorage2.1\CLSID\ = "{732D8BD7-5953-4329-8285-108AE7911BAA}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3625DE06-1546-4CD7-8A07-5D2AFB7559D7}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0C2C6CF-CC82-46AC-A138-47FCD20529F8}\ProxyStubClsid32	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 2568	2552	regsvr32.exe	30
PID 2552 wrote to memory of 2568	2552	regsvr32.exe	30
PID 2552 wrote to memory of 2568	2552	regsvr32.exe	30
PID 2552 wrote to memory of 2568	2552	regsvr32.exe	30
PID 2552 wrote to memory of 2568	2552	regsvr32.exe	30
PID 2552 wrote to memory of 2568	2552	regsvr32.exe	30
PID 2552 wrote to memory of 2568	2552	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\5114474b47200f0e18531c4d5c5fb03152d4c8cc2e4edbe51066755041435f9a.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\5114474b47200f0e18531c4d5c5fb03152d4c8cc2e4edbe51066755041435f9a.dll
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2568-3-0x0000000000360000-0x0000000000390000-memory.dmp

Filesize
192KB

Download
memory/2568-5-0x0000000010000000-0x000000001008B000-memory.dmp

Filesize
556KB

Download
memory/2568-4-0x000000001002F000-0x0000000010031000-memory.dmp

Filesize
8KB

Download
memory/2568-6-0x0000000000360000-0x0000000000390000-memory.dmp

Filesize
192KB

Download