floxif | 484a3e404f1118f8586643b86afddd3a29add3e59e88595181a174c2286131fc

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-01-2025 22:38

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General

Target

484a3e404f1118f8586643b86afddd3a29add3e59e88595181a174c2286131fc.dll
Size

1.5MB
MD5

59d568e7483501f291463cef00f90dc7
SHA1

41c7314c75c6f4b8fcec7b837ca896b2738da813
SHA256

484a3e404f1118f8586643b86afddd3a29add3e59e88595181a174c2286131fc
SHA512

5e5371e5bee825608ea45ea9956d14f7b2e40ca9dbc8f985856f6b17d52784a75418c6c12b2d2bd2f0a4354bf2e247a308dbc13b6e1a7fab5c8d60066c4d0d18
SSDEEP

49152:ffLu5HYuMnlY/Qro+edHV7pBSumNh+qKKZqq1qA:ff3uwY/ddHhpBcPLqqUA

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
behavioral1/files/0x000a000000012033-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000a000000012033-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2064	rundll32.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000a000000012033-1.dat	upx
behavioral1/memory/2064-3-0x0000000010000000-0x00000000104D8000-memory.dmp	upx
behavioral1/memory/2064-5-0x0000000000180000-0x00000000001B3000-memory.dmp	upx
behavioral1/memory/2064-6-0x0000000010000000-0x00000000104D8000-memory.dmp	upx
behavioral1/memory/2064-7-0x0000000010000000-0x00000000104D8000-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 WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 2064	2164	rundll32.exe	30
PID 2164 wrote to memory of 2064	2164	rundll32.exe	30
PID 2164 wrote to memory of 2064	2164	rundll32.exe	30
PID 2164 wrote to memory of 2064	2164	rundll32.exe	30
PID 2164 wrote to memory of 2064	2164	rundll32.exe	30
PID 2164 wrote to memory of 2064	2164	rundll32.exe	30
PID 2164 wrote to memory of 2064	2164	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\484a3e404f1118f8586643b86afddd3a29add3e59e88595181a174c2286131fc.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2164
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\484a3e404f1118f8586643b86afddd3a29add3e59e88595181a174c2286131fc.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  PID:2064

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

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Downloads

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

Filesize
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/2064-3-0x0000000010000000-0x00000000104D8000-memory.dmp

Filesize
4.8MB

Download
memory/2064-5-0x0000000000180000-0x00000000001B3000-memory.dmp

Filesize
204KB

Download
memory/2064-6-0x0000000010000000-0x00000000104D8000-memory.dmp

Filesize
4.8MB

Download
memory/2064-7-0x0000000010000000-0x00000000104D8000-memory.dmp

Filesize
4.8MB

Download