floxif | f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-12-2024 04:19

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General

Target

f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9.exe
Size

273KB
MD5

69442376dfb774dbd31cce3b92c6c2e0
SHA1

d157cd22c3a6ffe328fb07a6b898eb8b6cfb764d
SHA256

f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9
SHA512

a343462ca1fad77cbdac5b4344f85eb9eebc68a9d7dad31690724fe95d584847ec5070e887f7bae546abbcac82353eb818350f79dea7b051b5f30fef1a846bd3
SSDEEP

6144:xlG0ed4OvDzewKLGHj0qTBlznB2dnBV+UdvrEFp7hKSL:xlG0ed4OvXkLGHj0qTDz4BjvrEH7J

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/0x000d000000012276-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000d000000012276-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2336	f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9.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:	f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000d000000012276-1.dat	upx
behavioral1/memory/2336-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2336-13-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9.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	f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2336	f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2336	f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9.exe

C:\Users\Admin\AppData\Local\Temp\f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9.exe
"C:\Users\Admin\AppData\Local\Temp\f4e82cdd1a0a7329f332b689d76f4b74f6fe613efb8676702ae54e1f9edb41e9.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:2336

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/2336-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2336-5-0x0000000000405000-0x0000000000409000-memory.dmp

Filesize
16KB

Download
memory/2336-13-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download