floxif | b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
30/03/2025, 16:14

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General

Target

b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca.exe
Size

220KB
MD5

708fd3dd5377b586aaf8d1db7d5c48f6
SHA1

93b47424f2b9ae45dd8ac2a86cc732aea828694e
SHA256

b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca
SHA512

e1200f3477623f0b5f282fd4294c8210f68c5f0e9bf3af8dcd390908a7c0bada5f77062d580928f52dd50682ca91649a22d533cb3b48febee196559747a525b0
SSDEEP

3072:oNlZ2YBOZV9ERu9/N6+lRiE19SnnQOohy/8oQQ4BD2lQBV+UdE+rECWp7hKsV:o1DqfN6gHRVQ4RBV+UdvrEFp7hKa

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/0x000c00000001202c-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000c00000001202c-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2408	b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca.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:	b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c00000001202c-1.dat	upx
behavioral1/memory/2408-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2408-12-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca.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	b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2408	b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2408	b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca.exe

C:\Users\Admin\AppData\Local\Temp\b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca.exe
"C:\Users\Admin\AppData\Local\Temp\b491e64a90be61339f918dc6d9c454bb3e281dabdd4334954dccd48a054ca8ca.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
PID:2408

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

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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/2408-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2408-10-0x0000000000890000-0x00000000008B7000-memory.dmp

Filesize
156KB

Download
memory/2408-12-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download