floxif | 274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
26/08/2026, 09:43

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General

Target
274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.exe
Size 2.7MB
Sample260826-lp562stsbw
SHA256 274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031
MD5 8576a2d385367d0021f41772ab62bc3a
SHA1 036d2fea919f0f763dccb8e506e210f4a4fd47e0
SHA512 4a26f3c839db9e3f35c00608f10f49b2f02bb27add2bf41eba6f8134c60d26c17b54e0bf4225a31ce1f969fe58fce113358d05a1bf685d3ab4599ba908639ec5
SSDEEP 49152:KaSofyDdaWqJXBhgmvQojZ2toFPVmyN8yrOR23P2yYI1q7B5lcdtH9jR9W/KMZKw:LudwBhzQoMtoFPVmyN8yrOR23O8077lt
TLSH
T1F0D58E217761C076D1732630956AD378E1E9FE310D39423762957F3E6EB0A42EA3863B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery floxif trojan upx

Malware Config

Signatures

Family: 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
behavioral2/files/0x000a000000019cb8-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000a000000019cb8-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
5936	274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\d:	274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000a000000019cb8-1.dat	upx
behavioral2/memory/5936-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/5936-13-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5820	5936	WerFault.exe	87
2524	5936	WerFault.exe	87

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	274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5936	274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.exe
5936	274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5936	274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5936	274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.exe

C:\Users\Admin\AppData\Local\Temp\274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.exe
"C:\Users\Admin\AppData\Local\Temp\274872712cc3b0fdc6aef6ef765eed5d4e5dda8d89b380f022e80deaa0522031.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
- Suspicious use of SetWindowsHookEx
PID:5936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5936 -s 844
  2⤵
  - Program crash
  PID:5820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5936 -s 864
  2⤵
  - Program crash
  PID:2524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5936 -ip 5936
1⤵
PID:3720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 5936 -ip 5936
1⤵
PID:2604

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

symsrv.dll

Path C:\Program Files\Common Files\System\symsrv.dll
Size 67KB
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab
SSDEEP 1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7ZL:c8y93KQjy7G55riF1cMo03V
TLSH
T17863F1372AB5807DDD210D37949F835AB771E5A76C20643FC25907D988B8DD0E3239AE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5936-4-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/5936-10-0x0000000000841000-0x0000000000842000-memory.dmp

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memory/5936-13-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/5936-11-0x0000000000840000-0x0000000000AE8000-memory.dmp

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