floxif | 9d234f6a9d147edf2f8c8962a5565032cffe61f89f960de3e87eb680a2498f93

Analysis

max time kernel
94s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 02:41

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General

Target

9d234f6a9d147edf2f8c8962a5565032cffe61f89f960de3e87eb680a2498f93.dll
Size

631KB
MD5

9b2ac65de66af1f44cd5cc13425a9c51
SHA1

522524481734655c04d6e9a130f7579ad1d25a8c
SHA256

9d234f6a9d147edf2f8c8962a5565032cffe61f89f960de3e87eb680a2498f93
SHA512

8414f2f24c85992cb9958a748d0eeba133ba0ba3d296dd5b09fc15b8955612c0a4422b21f7a25bbdcf57c8ec00a616b889e625292472a48c13fc8c7cece4dcf0
SSDEEP

12288:VruZqdMrQK5T07M5eTLCi+6chenpogDk6+RByOoJ01uxABjvrEH7a7:VruZqdMrQK5WM0Tv+6senK6+RBylJ01l

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/0x000d000000023c1f-1.dat	floxif

Blocklisted process makes network request 2 IoCs

flow	pid	Process
10	5032	rundll32.exe
17	5032	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000d000000023c1f-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
5032	rundll32.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5032-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/files/0x000d000000023c1f-1.dat	upx
behavioral2/memory/5032-8-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	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 behavior: EnumeratesProcesses 2 IoCs

pid	Process
5032	rundll32.exe
5032	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5032	rundll32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5032	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 5032	5048	rundll32.exe	83
PID 5048 wrote to memory of 5032	5048	rundll32.exe	83
PID 5048 wrote to memory of 5032	5048	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d234f6a9d147edf2f8c8962a5565032cffe61f89f960de3e87eb680a2498f93.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d234f6a9d147edf2f8c8962a5565032cffe61f89f960de3e87eb680a2498f93.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Enumerates connected drives
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:5032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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/5032-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/5032-8-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download