floxif | aca8ab8f8a0fd112113332ddcd4398e596cdca3611763878d3d8e19f754e1392

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-01-2025 14:15

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General

Target

aca8ab8f8a0fd112113332ddcd4398e596cdca3611763878d3d8e19f754e1392N.exe
Size

1.9MB
MD5

0230fde3c10101d22c49626c9e87ef30
SHA1

513bcf3a690da65b252cfe9371ccfc3d997ba715
SHA256

aca8ab8f8a0fd112113332ddcd4398e596cdca3611763878d3d8e19f754e1392
SHA512

ca17da5c068e5614fd65dc67debb17966eb5cfcaffb343a04f520958ae3b0ba296d775871c9cd487b533b11ac2e0deac57753579efb4ea768b6ce63855e94447
SSDEEP

49152:EIP2FSzbM4JkZvrkOuE0KhYAujC8mcd7wxrkpBtOvZ9JKsz:EIeFCMxvL0KiAKCTcd7wxQTtOvZ9Zz

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/0x000c000000023b5f-2.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b5f-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4596	aca8ab8f8a0fd112113332ddcd4398e596cdca3611763878d3d8e19f754e1392N.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4596-0-0x00000000003B0000-0x0000000000814000-memory.dmp	upx
behavioral2/memory/4596-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/files/0x000c000000023b5f-2.dat	upx
behavioral2/memory/4596-8-0x00000000003B0000-0x0000000000814000-memory.dmp	upx
behavioral2/memory/4596-7-0x00000000003B0000-0x0000000000814000-memory.dmp	upx
behavioral2/memory/4596-10-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	aca8ab8f8a0fd112113332ddcd4398e596cdca3611763878d3d8e19f754e1392N.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	aca8ab8f8a0fd112113332ddcd4398e596cdca3611763878d3d8e19f754e1392N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4596	aca8ab8f8a0fd112113332ddcd4398e596cdca3611763878d3d8e19f754e1392N.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4596	aca8ab8f8a0fd112113332ddcd4398e596cdca3611763878d3d8e19f754e1392N.exe

C:\Users\Admin\AppData\Local\Temp\aca8ab8f8a0fd112113332ddcd4398e596cdca3611763878d3d8e19f754e1392N.exe
"C:\Users\Admin\AppData\Local\Temp\aca8ab8f8a0fd112113332ddcd4398e596cdca3611763878d3d8e19f754e1392N.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4596

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

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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/4596-0-0x00000000003B0000-0x0000000000814000-memory.dmp

Filesize
4.4MB

Download
memory/4596-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4596-6-0x000000000079C000-0x000000000079D000-memory.dmp

Filesize
4KB

Download
memory/4596-8-0x00000000003B0000-0x0000000000814000-memory.dmp

Filesize
4.4MB

Download
memory/4596-7-0x00000000003B0000-0x0000000000814000-memory.dmp

Filesize
4.4MB

Download
memory/4596-10-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download