floxif | 0d89477b63c57ea87af665cc62bd3a97a297494289ee8f9375f12420a21b8182

Analysis

max time kernel
95s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-12-2024 19:28

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General

Target

0d89477b63c57ea87af665cc62bd3a97a297494289ee8f9375f12420a21b8182.dll
Size

4.0MB
MD5

b5b57022e349e9791a8abe0901bf4f26
SHA1

fbd184b8a1873cc0ba95ca255867039c2b581921
SHA256

0d89477b63c57ea87af665cc62bd3a97a297494289ee8f9375f12420a21b8182
SHA512

9fc7935f91a648e17ee3712f5b02e525fea9637b8d27eb3640c3c5a39320630e1bec60db7c3be5337bbc97e54a29e6f1c557628ce733cf6769614ecfd3fb70b6
SSDEEP

49152:GizdDWQcAdLh1ckY/wqIqh8rvZwsIBGfHP2MZnaPxQ1w7OEnGI8wgJyf:GuAkprwBcH+MZ0Q1wlnYZJa

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/0x000c000000023bc6-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023bc6-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
544	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/544-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/files/0x000c000000023bc6-1.dat	upx
behavioral2/memory/544-8-0x0000000010000000-0x0000000010030000-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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4960	544	WerFault.exe	83

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	544	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 544	4988	rundll32.exe	83
PID 4988 wrote to memory of 544	4988	rundll32.exe	83
PID 4988 wrote to memory of 544	4988	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0d89477b63c57ea87af665cc62bd3a97a297494289ee8f9375f12420a21b8182.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0d89477b63c57ea87af665cc62bd3a97a297494289ee8f9375f12420a21b8182.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:544
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 544 -s 720
    3⤵
    - Program crash
    PID:4960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 544 -ip 544
1⤵
PID:4864

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/544-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/544-8-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/544-6-0x00000000747A0000-0x0000000074BC1000-memory.dmp

Filesize
4.1MB

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