floxif | 2e74b2745649ad5f6384bdc5d1dd4f2e45136659b4c492fa71e47dbbad60d660

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01-10-2024 09:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2e74b2745649ad5f6384bdc5d1dd4f2e45136659b4c492fa71e47dbbad60d660N.dll
Size

252KB
MD5

d8f1be57664c6a29874a04a5e43c5d50
SHA1

17d9faaee212a384b7f48c938de0741396936c8c
SHA256

2e74b2745649ad5f6384bdc5d1dd4f2e45136659b4c492fa71e47dbbad60d660
SHA512

6aec5a5d308995c247a83931cd59367dca6ff83443410d96d482ff9813acfb59d60ce5bba40736bbd8a9364f11de4c945e57e435aa0b7a6bbe0b996a0c16138d
SSDEEP

6144:V53HOBkqdU8nf2fGrCAx27NyoBV+UdvrEFp7hKEdIz:V5TB8ef02pXBjvrEH7LdIz

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/0x000900000002344a-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000900000002344a-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4328	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000900000002344a-1.dat	upx
behavioral2/memory/4328-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4328-5-0x0000000010000000-0x0000000010030000-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	4328	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1500 wrote to memory of 4328	1500	rundll32.exe	82
PID 1500 wrote to memory of 4328	1500	rundll32.exe	82
PID 1500 wrote to memory of 4328	1500	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2e74b2745649ad5f6384bdc5d1dd4f2e45136659b4c492fa71e47dbbad60d660N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1500
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\2e74b2745649ad5f6384bdc5d1dd4f2e45136659b4c492fa71e47dbbad60d660N.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4328

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/4328-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4328-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download