floxif | 347b2ff3e62e15d81c3fa093b8125313f509ae04c950e1aab9152148e4d1c662

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18/12/2024, 14:23

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

347b2ff3e62e15d81c3fa093b8125313f509ae04c950e1aab9152148e4d1c662.dll
Size

939KB
MD5

0c8697e14b580501001fd243be657d54
SHA1

244b46c9dfca21a1d227c842bea9d00dadd4f5b4
SHA256

347b2ff3e62e15d81c3fa093b8125313f509ae04c950e1aab9152148e4d1c662
SHA512

7a270e57386f83e8887e65cd7116c4d7683841b96affdbaf0461953f65c0ca998d76191fdc1e33303edb474d0a5c956979110b5848f6b7cad46e748aae3e70f1
SSDEEP

24576:Z9J2af3FvMFd01qgSRaxXxHUOo+lMRGJ/qofh:N2y2kxXxHUv+/1qI

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
behavioral2/files/0x000c000000023ba9-3.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023ba9-3.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
4216	rundll32.exe
4216	rundll32.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023ba9-3.dat	upx
behavioral2/memory/4216-6-0x0000000000DB0000-0x0000000000DE3000-memory.dmp	upx
behavioral2/memory/4216-7-0x0000000000DB0000-0x0000000000DE3000-memory.dmp	upx
behavioral2/memory/4216-8-0x0000000000DB0000-0x0000000000DE3000-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	4216	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 4216	1352	rundll32.exe	83
PID 1352 wrote to memory of 4216	1352	rundll32.exe	83
PID 1352 wrote to memory of 4216	1352	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\347b2ff3e62e15d81c3fa093b8125313f509ae04c950e1aab9152148e4d1c662.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1352
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\347b2ff3e62e15d81c3fa093b8125313f509ae04c950e1aab9152148e4d1c662.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4216

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

Loading Replay Monitor...

Downloads

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

Filesize
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/4216-6-0x0000000000DB0000-0x0000000000DE3000-memory.dmp

Filesize
204KB

Download
memory/4216-7-0x0000000000DB0000-0x0000000000DE3000-memory.dmp

Filesize
204KB

Download
memory/4216-8-0x0000000000DB0000-0x0000000000DE3000-memory.dmp

Filesize
204KB

Download