floxif | d0017b52249568da59d8221f57a24a31f902a81233a80c40a3a2558c21e9c686

Analysis

max time kernel
96s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 21:23

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General

Target

d0017b52249568da59d8221f57a24a31f902a81233a80c40a3a2558c21e9c686N.dll
Size

1.7MB
MD5

3c0de83ce19871d58c88715c13a22be0
SHA1

11f4d97d5d2061f1093d6003a4b7496f0873c3e7
SHA256

d0017b52249568da59d8221f57a24a31f902a81233a80c40a3a2558c21e9c686
SHA512

0e3643017431393fac4882c0d0e5d83b526be4dda873d477757679ba026f48a79ef60de073c3f3005de446d6bcb399813ebc426d72dd19218659d988578b3cb5
SSDEEP

24576:RcHPcgkDwhpEPQzH/tX4hzRBqXJk3wbFJjTib7DllUD47SDXj/KOYc5AmfQQRAHf:OrylBUbybfOTvDAIVRkokHT9krrkQ1qD

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/0x000c000000023b82-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b82-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4824	rundll32.exe

Network Service Discovery 1 TTPs 1 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2616	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b82-1.dat	upx
behavioral2/memory/4824-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/4824-22-0x0000000010000000-0x0000000010033000-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	4824	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4244 wrote to memory of 4824	4244	rundll32.exe	85
PID 4244 wrote to memory of 4824	4244	rundll32.exe	85
PID 4244 wrote to memory of 4824	4244	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d0017b52249568da59d8221f57a24a31f902a81233a80c40a3a2558c21e9c686N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4244
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d0017b52249568da59d8221f57a24a31f902a81233a80c40a3a2558c21e9c686N.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4824
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Network Service Discovery
    PID:2616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

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
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
C:\Users\Admin\AppData\LocalLow\SogouPY.users\acc.dat.wtm

Filesize
80B

MD5
bb0afc94e85040b4e6c45f6c5f100d23

SHA1
4348b1347c4f54024ea1e33fcaee4252235fc3f7

SHA256
076beaf15f558eb4e6d2b67fff2f7645f1a6c66794477df53bb30bf3ef9a9c58

SHA512
31265447fca9c01cd7d12996a383db27ed77cd960233686125899a4f8ca356f84560dbab6e4f746b0c542e0a4c53a089704a7381d0964d7ef61b061e7cc86292

Download Submit
memory/4824-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4824-5-0x0000000074A51000-0x0000000074A52000-memory.dmp

Filesize
4KB

Download
memory/4824-22-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download