floxif | e071ae116c9efa1fb1306e4db6484ef5a932c57eb201d43f8fbc79fe109790bb

Analysis

max time kernel
15s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-01-2025 09:39

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General

Target

e071ae116c9efa1fb1306e4db6484ef5a932c57eb201d43f8fbc79fe109790bbN.dll
Size

2.8MB
MD5

d9a6a81d09443f5981dd257c9dc05c40
SHA1

faee56668debe526f475d63c75e11e119521eeea
SHA256

e071ae116c9efa1fb1306e4db6484ef5a932c57eb201d43f8fbc79fe109790bb
SHA512

f2e9b6d25a142826b9dd836cf979b1cbfa775ce65e3e7655d9c461c03b4aaa67da7d2890f1e08a021e2898210a71294e1cbbdb3cc1aa80e19e771e46013c153e
SSDEEP

49152:f2+mHZCK3fxkLpj7RvQDfm3FUbpejGsyL+TDx95z2W6B4GrTwMzsz0QD7JflS7uF:f21EKzRsY+TDx9Q4sTpzTQ5D

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/0x000b000000012029-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000b000000012029-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2512	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000b000000012029-1.dat	upx
behavioral1/memory/2512-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2512-6-0x0000000010000000-0x0000000010030000-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	2512	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 328 wrote to memory of 2512	328	rundll32.exe	30
PID 328 wrote to memory of 2512	328	rundll32.exe	30
PID 328 wrote to memory of 2512	328	rundll32.exe	30
PID 328 wrote to memory of 2512	328	rundll32.exe	30
PID 328 wrote to memory of 2512	328	rundll32.exe	30
PID 328 wrote to memory of 2512	328	rundll32.exe	30
PID 328 wrote to memory of 2512	328	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e071ae116c9efa1fb1306e4db6484ef5a932c57eb201d43f8fbc79fe109790bbN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:328
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e071ae116c9efa1fb1306e4db6484ef5a932c57eb201d43f8fbc79fe109790bbN.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2512

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

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2512-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2512-4-0x0000000074681000-0x0000000074682000-memory.dmp

Filesize
4KB

Download
memory/2512-5-0x0000000074682000-0x0000000074683000-memory.dmp

Filesize
4KB

Download
memory/2512-6-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download