floxif | d0e2910167770cc1b27aa35532d541f10c2ef414c6597d51550687fd4c76d32c

Analysis

max time kernel
148s
max time network
124s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
27/10/2026, 00:27

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General

Target
d0e2910167770cc1b27aa35532d541f10c2ef414c6597d51550687fd4c76d32c.dll
Size 258KB
Sample261027-ar6d2sat7q
SHA256 d0e2910167770cc1b27aa35532d541f10c2ef414c6597d51550687fd4c76d32c
MD5 b2ba881c0bd4793497975b700faf87a9
SHA1 586245fbfb7e51ccf0f3e585e32a6d64a5d8893a
SHA512 5a12b83e3575415a317cb234acff0fdb3f635540cdade10feacc744dab1827c9ae3ffbc24b7f2be182ed06ae3fa40181d1a25d48f40f3ef3990ab02530f09670
SSDEEP 6144:Q0ffHxKbDxle1H/0+9PILAPMeHRzCBV+UdvrEFp7hKf4IMy/:RfZCvg/0+UoCBjvrEH7M4I3
TLSH
T1D2448C0032D083FDE5BE0A3875785A6555FE783C1B79C8CF535409AA5E3CAC29A35B2B
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/0x000600000001b84b-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000600000001b84b-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3244	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000600000001b84b-1.dat	upx
behavioral2/memory/3244-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3244-6-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.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	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3244	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 4432 wrote to memory of 3244	4432	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d0e2910167770cc1b27aa35532d541f10c2ef414c6597d51550687fd4c76d32c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d0e2910167770cc1b27aa35532d541f10c2ef414c6597d51550687fd4c76d32c.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3244

Network

MITRE ATT&CK Enterprise v16

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

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/3244-4-0x0000000010000000-0x0000000010030000-memory.dmp

Download

memory/3244-6-0x0000000010000000-0x0000000010030000-memory.dmp