floxif | 94b64e6bd65cae99671201d3cf9170029d68b336e8a24f330665d303e3238106

Analysis

max time kernel
94s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 02:09

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General

Target

94b64e6bd65cae99671201d3cf9170029d68b336e8a24f330665d303e3238106.dll
Size

901KB
MD5

17a678a4dc3e4197bdce4da798254635
SHA1

3bc5aa45ff846df981449adf9de7b595fa263559
SHA256

94b64e6bd65cae99671201d3cf9170029d68b336e8a24f330665d303e3238106
SHA512

30b0baa5251778682c97afe8d26e14594c81eac9325f860b2fd1c087d2b44dd8d364331b344e6b3118205cc7f1aefd17f448eee4f50425f7f582afa9b99540f6
SSDEEP

12288:JZcohgVGBmUyV8XOgh6LaISFP5FF6snXcscXh5KmR+M6Pt2H6qXco9TGU+BjvrEW:DYJUW8sFXimU7t2aq59TIrEH7a

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

Processes:

resource	yara_rule
C:\Program Files\Common Files\System\symsrv.dll	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
C:\Program Files\Common Files\System\symsrv.dll	acprotect

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1476 rundll32.exe

pid	process
1476	rundll32.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1476-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
C:\Program Files\Common Files\System\symsrv.dll	upx
behavioral2/memory/1476-6-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

Processes:

rundll32.exe

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

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 1476 rundll32.exe

description	ioc	process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	1476	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1684 wrote to memory of 1476	1684	rundll32.exe	rundll32.exe
PID 1684 wrote to memory of 1476	1684	rundll32.exe	rundll32.exe
PID 1684 wrote to memory of 1476	1684	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\94b64e6bd65cae99671201d3cf9170029d68b336e8a24f330665d303e3238106.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\94b64e6bd65cae99671201d3cf9170029d68b336e8a24f330665d303e3238106.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1476

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/1476-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1476-6-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download