floxif | a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
07-02-2025 03:36

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General

Target

a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.exe
Size

2.0MB
MD5

47d32c933a4a693d68bd57aa305b4c32
SHA1

40a62e4486f7ff33268326c7db304997459eab68
SHA256

a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19
SHA512

dadd6eb0a2db810ee07e341538089cd3c1c95b6c4353d1ec0527be2222f5fddc65a2e309bb5c2906207e684e6d00fe24fc6941b8f25b184b516fd99ce6c44aa3
SSDEEP

49152:jio6pWgAw3G+ZDYolW9Y3OqkWXNc3lfF9iLPOmtBZ8rIy1cgD5jHmX:jApWIGOTW9Y3OqkWXNc3lfFAtH8rIy14

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/0x0003000000022a8c-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0003000000022a8c-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1020	a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.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:	a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0003000000022a8c-1.dat	upx
behavioral2/memory/1020-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1020-14-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.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	a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1020	a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.exe
1020	a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1020	a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1020	a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.exe

C:\Users\Admin\AppData\Local\Temp\a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.exe
"C:\Users\Admin\AppData\Local\Temp\a571ce5f13cff3923aac4b1379efe6eccc88ad58a653ce85aa9640291d74bf19.exe"
1⤵
- 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 SetWindowsHookEx
PID:1020

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

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/1020-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1020-5-0x0000000000851000-0x0000000000852000-memory.dmp

Filesize
4KB

Download
memory/1020-6-0x0000000000850000-0x0000000000A51000-memory.dmp

Filesize
2.0MB

Download
memory/1020-14-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1020-15-0x0000000000850000-0x0000000000A51000-memory.dmp

Filesize
2.0MB

Download