floxif | 233cadbac50dd37ff52888038ebdfac6d008fc7a421ea52d53d16a7a699d5e76

Analysis

max time kernel
107s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
03/04/2025, 20:27

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General

Target

233cadbac50dd37ff52888038ebdfac6d008fc7a421ea52d53d16a7a699d5e76.dll
Size

229KB
MD5

90678035b94a51b55f5a6f3630e7daaa
SHA1

286a69de90a7c2044e6e9bf1343fed2ff2e75268
SHA256

233cadbac50dd37ff52888038ebdfac6d008fc7a421ea52d53d16a7a699d5e76
SHA512

75d54f2db92097df52b9f39fe06a77d3997b32297b21c2cd86de4a8e982d73e2c152e48b888b39ad89f77acf809cf9688860f8eebe8e0fdce9ca91a7319ca576
SSDEEP

6144:fwW3JKUwC7yqPaKpdmfUAwtBV+UdvrEFp7hKgc:XAUwCZP3dowtBjvrEH7w

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/0x00090000000227aa-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00090000000227aa-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2948	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00090000000227aa-1.dat	upx
behavioral1/memory/2948-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2948-5-0x0000000010000000-0x0000000010030000-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	2948	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5424 wrote to memory of 2948	5424	rundll32.exe	85
PID 5424 wrote to memory of 2948	5424	rundll32.exe	85
PID 5424 wrote to memory of 2948	5424	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\233cadbac50dd37ff52888038ebdfac6d008fc7a421ea52d53d16a7a699d5e76.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5424
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\233cadbac50dd37ff52888038ebdfac6d008fc7a421ea52d53d16a7a699d5e76.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2948

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

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2948-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2948-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download