floxif | 317283589c7b68c685f1757cb98313dc48229932f04ea25a2fef024cf7c7e0b8

Analysis

max time kernel
94s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 12:24

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General

Target

2024-09-19_2b8b375eff2b900f9dca0c980fca5b9f_avoslocker_floxif_hijackloader.exe
Size

2.7MB
MD5

2b8b375eff2b900f9dca0c980fca5b9f
SHA1

a42ee91996dc8f3685354016f9579e7ef56c069f
SHA256

317283589c7b68c685f1757cb98313dc48229932f04ea25a2fef024cf7c7e0b8
SHA512

8ff3b01902ffbd5f3a36fc081173989eca44cb980c3f21e196613391a0bdaed624dc709851a701726ad955f532ed6eb13bdded50ef4ec6a4a4ae22d280fe177a
SSDEEP

49152:CwwwwsjTcX9JzP2kq3WI2gn2y19M0CQA7QN7Ws0EqjzVZelxxzFzx0S:rMJj2kT7gbCQA767Ws0rVZe3d0S

Score

10^/10

floxif backdoor discovery trojan upx

Malware Config

Signatures

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/0x000b0000000233fd-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000b0000000233fd-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3652	2024-09-19_2b8b375eff2b900f9dca0c980fca5b9f_avoslocker_floxif_hijackloader.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000b0000000233fd-1.dat	upx
behavioral2/memory/3652-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3652-7-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-09-19_2b8b375eff2b900f9dca0c980fca5b9f_avoslocker_floxif_hijackloader.exe

Program crash 4 IoCs

pid	pid_target	Process	procid_target
4852	3652	WerFault.exe	81
4244	3652	WerFault.exe	81
524	3652	WerFault.exe	81
2924	3652	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	2024-09-19_2b8b375eff2b900f9dca0c980fca5b9f_avoslocker_floxif_hijackloader.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3652	2024-09-19_2b8b375eff2b900f9dca0c980fca5b9f_avoslocker_floxif_hijackloader.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-19_2b8b375eff2b900f9dca0c980fca5b9f_avoslocker_floxif_hijackloader.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_2b8b375eff2b900f9dca0c980fca5b9f_avoslocker_floxif_hijackloader.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 180
  2⤵
  - Program crash
  PID:4852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 212
  2⤵
  - Program crash
  PID:4244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 300
  2⤵
  - Program crash
  PID:524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3652 -s 368
  2⤵
  - Program crash
  PID:2924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3652 -ip 3652
1⤵
PID:1764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3652 -ip 3652
1⤵
PID:4436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3652 -ip 3652
1⤵
PID:2324

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3652 -ip 3652
1⤵
PID:2384

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/3652-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3652-7-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3652-5-0x0000000000430000-0x00000000006C2000-memory.dmp

Filesize
2.6MB

Download