floxif | 8cded506c1608a3f56fa0d4c8c269db5341a9b482ab9468eac9372ba8ae4f569

Analysis

max time kernel
120s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
10/01/2025, 19:43

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General

Target

8cded506c1608a3f56fa0d4c8c269db5341a9b482ab9468eac9372ba8ae4f569N.dll
Size

1.7MB
MD5

757f6c5dd4e5f6aa5eefe638f3812b60
SHA1

b067881bfc1a346bc23d6a9cbf825145adfeea32
SHA256

8cded506c1608a3f56fa0d4c8c269db5341a9b482ab9468eac9372ba8ae4f569
SHA512

498a7dce2fa35a0d3cb0028a16ec6b8d6d437596fc774c98a7f48f66d6fbfd1c43a371b68c84e96d84427e3c721bc9df63cd1532f0770bbcac70d344f6377cc0
SSDEEP

24576:UHPcgkDwhpEPQzH/tX4hzRBiXJk3wbFJjTib7DllUD47SDXj/KOec5AmfQQRAH1F:UrylBcbybfOTvZAIVRkokHT9krrkQ1qT

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/0x000e000000012267-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000e000000012267-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1688	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000e000000012267-1.dat	upx
behavioral1/memory/1688-3-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/1688-20-0x0000000010000000-0x0000000010033000-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	1688	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 1688	2240	rundll32.exe	30
PID 2240 wrote to memory of 1688	2240	rundll32.exe	30
PID 2240 wrote to memory of 1688	2240	rundll32.exe	30
PID 2240 wrote to memory of 1688	2240	rundll32.exe	30
PID 2240 wrote to memory of 1688	2240	rundll32.exe	30
PID 2240 wrote to memory of 1688	2240	rundll32.exe	30
PID 2240 wrote to memory of 1688	2240	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8cded506c1608a3f56fa0d4c8c269db5341a9b482ab9468eac9372ba8ae4f569N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8cded506c1608a3f56fa0d4c8c269db5341a9b482ab9468eac9372ba8ae4f569N.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1688

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

Filesize
80B

MD5
2f7d3df16e08102be222b1f2b7891d6f

SHA1
02347892e87cc7520f1959594f2f8f1657222af3

SHA256
2e117d61e172955c18656059149becf56d0c75bd133f439e609c23779a385f02

SHA512
1f8c28d0881a92e0a6a593105dafa1c4e03e96cecd7ec3a0cd8ec24113c5c287b64c7a6c61803547a75d0192d15e18ed9b27d98b7df196e2385e6e78b242ca8e

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

Filesize
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/1688-3-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/1688-20-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download