floxif | 8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52

Analysis

max time kernel
93s
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
21-11-2024 06:46

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General

Target

8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe
Size

286KB
MD5

62990fd6cb5562025c719a747ecb65ac
SHA1

f3be434cf451c603adc8c0b52494f748e7c6927e
SHA256

8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52
SHA512

f35fc768d35b7dcc6b08e7e022c897e0a1df0feab207aae621a2bc609831240b68005e55ea59b7ecdcc954f6c1cd92af4a7511514e6be7e75540768195947e8a
SSDEEP

6144:vJgKNkhSR/5kHouyXnZhB+h8WHlBV+UdvrEFp7hKeWTUR:vJgKNkhm/JuyXnPB+h8WHlBjvrEH7oUR

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

Processes:

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

Processes:

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

Loads dropped DLL 1 IoCs

Processes:

8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe

pid process

4916 8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe

pid	process
4916	8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
C:\Program Files\Common Files\System\symsrv.dll	upx
behavioral2/memory/4916-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4916-8-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

Processes:

8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe

description ioc process

File created C:\Program Files\Common Files\System\symsrv.dll 8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe

description	ioc	process
File created	C:\Program Files\Common Files\System\symsrv.dll	8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.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:

8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe

description pid process

Token: SeDebugPrivilege 4916 8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe

description	pid	process
Token: SeDebugPrivilege	4916	8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe

C:\Users\Admin\AppData\Local\Temp\8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe
"C:\Users\Admin\AppData\Local\Temp\8346ef9fb92e9b5c1ff287a8bc6f5c50084cdb198c9e2a0ac8b2a84517888f52.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4916

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

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/4916-1-0x000000000079B000-0x000000000079C000-memory.dmp

Filesize
4KB

Download
memory/4916-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4916-6-0x0000000000790000-0x00000000007C7000-memory.dmp

Filesize
220KB

Download
memory/4916-8-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download