floxif | 4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174a

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-02-2025 12:16

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General

Target

4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174aN.exe
Size

267KB
MD5

b16ccd20aee5feae0388015f6c96b460
SHA1

5e763a34c9131b83e24a14a2018e664926e196f6
SHA256

4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174a
SHA512

ea1a574233e28acd8db9f8705491d21c916674317ab4a0794ad5899d16283eb13688c84ffd32cfdf19718549069408733787ae496e4a57b5d31efde7b0dec708
SSDEEP

6144:40359MhL/vGsbTBl2wOspBV+UdvrEFp7hKuE:/p9MV/esbTD2wlBjvrEH7a

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/0x0007000000012117-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0007000000012117-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2812	4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174aN.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:	4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174aN.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2812-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/files/0x0007000000012117-1.dat	upx
behavioral1/memory/2812-13-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174aN.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174aN.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	4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174aN.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2812	4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174aN.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2812	4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174aN.exe

C:\Users\Admin\AppData\Local\Temp\4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174aN.exe
"C:\Users\Admin\AppData\Local\Temp\4bf2483e5f547e17697df175920775785c35d1f76185718fd66e7d9285a1174aN.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:2812

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

\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2812-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2812-5-0x0000000000407000-0x000000000040A000-memory.dmp

Filesize
12KB

Download
memory/2812-13-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download