floxif | 3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5c

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 14:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5cN.exe
Size

2.4MB
MD5

eef4b3ec7d00c28cd19f0c03e3cf7fd0
SHA1

4de5052ed6ef13b48e07dda2ec676c38209424af
SHA256

3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5c
SHA512

aaa520ee0e8551dc5eedbe8fd9a7754a92a37a7c20f13163475ad7454e9f2ecb8a06cecce021739aade67d0cb65802edc800f06441b49dd9aed03ffef27ef0d0
SSDEEP

49152:Dsj0zjZAJhZPrU6GTuvOhZiUZY8cZiOtj2GT1qxvyoG88rZ2zM9KgevSjviDHd6:DsWjmhZPtGTRhZiUZY8cZiOtj2GyG8St

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/0x000c000000023b2d-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b2d-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1680	3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5cN.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b2d-1.dat	upx
behavioral2/memory/1680-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1680-9-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5cN.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4352	1680	WerFault.exe	81
2832	1680	WerFault.exe	81

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	3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5cN.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1680	3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5cN.exe
1680	3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5cN.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1680	3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5cN.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1680	3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5cN.exe

C:\Users\Admin\AppData\Local\Temp\3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5cN.exe
"C:\Users\Admin\AppData\Local\Temp\3b441e477336c0a0dc26788b64acdb77470d89faec374bc3617e89f0fa055b5cN.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 728
  2⤵
  - Program crash
  PID:4352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 736
  2⤵
  - Program crash
  PID:2832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 1680 -ip 1680
1⤵
PID:3424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 1680 -ip 1680
1⤵
PID:4008

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
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/1680-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1680-5-0x00000000006B1000-0x00000000006B2000-memory.dmp

Filesize
4KB

Download
memory/1680-6-0x00000000006B0000-0x0000000000900000-memory.dmp

Filesize
2.3MB

Download
memory/1680-7-0x00000000006B0000-0x0000000000900000-memory.dmp

Filesize
2.3MB

Download
memory/1680-9-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download