floxif | 1e45b897690fffcd52a4b82beefcb53b168ede79aed3bdbcdcd22071b17e4cbc

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 20:58

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General

Target

1e45b897690fffcd52a4b82beefcb53b168ede79aed3bdbcdcd22071b17e4cbcN.dll
Size

142KB
MD5

98bb9fb1ac17fc73bc86e5115e8e7ee0
SHA1

3065bddd387bad4d25d3f772baf83f543264d1d8
SHA256

1e45b897690fffcd52a4b82beefcb53b168ede79aed3bdbcdcd22071b17e4cbc
SHA512

0c293a69060304e3e5b162562a5eba631be244d09b1659284a503f2983009e4555e1ae1829d2861499818c46304003dc818bded1f21c814ec2dbb8bc19462d27
SSDEEP

3072:jzwLjtS9aoIjwh5IlmBA2lQBV+UdE+rECWp7hK6yY2PU:jS09aoPAKOBV+UdvrEFp7hK6yJM

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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/0x000a0000000120d6-1.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000a0000000120d6-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2524	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000a0000000120d6-1.dat	upx
behavioral1/memory/2524-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2524-5-0x0000000010000000-0x0000000010030000-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	2524	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 2524	1708	rundll32.exe	30
PID 1708 wrote to memory of 2524	1708	rundll32.exe	30
PID 1708 wrote to memory of 2524	1708	rundll32.exe	30
PID 1708 wrote to memory of 2524	1708	rundll32.exe	30
PID 1708 wrote to memory of 2524	1708	rundll32.exe	30
PID 1708 wrote to memory of 2524	1708	rundll32.exe	30
PID 1708 wrote to memory of 2524	1708	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1e45b897690fffcd52a4b82beefcb53b168ede79aed3bdbcdcd22071b17e4cbcN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1e45b897690fffcd52a4b82beefcb53b168ede79aed3bdbcdcd22071b17e4cbcN.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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/2524-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2524-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download