floxif | 4c9cad0ef04a8512f5ced3e01b267612ba7019fc1f1c8709a7e95cac9066bfc1

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-12-2024 16:23

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General

Target

2024-12-18_573183f44383e8123536a2dd7923d2f4_bkransomware_floxif.exe
Size

275KB
MD5

573183f44383e8123536a2dd7923d2f4
SHA1

0bcc30a2bb8e6957911486bfadb01ee49bd79d3f
SHA256

4c9cad0ef04a8512f5ced3e01b267612ba7019fc1f1c8709a7e95cac9066bfc1
SHA512

e8aa7160753db28dd36ce145e9e4bca025c01604c6be7ec682e705806042c08b36d289757c8a9606da95e399ea04dd0a9df6969a4ffed895dc60b5a764c93d5c
SSDEEP

3072:9666SmGgfYISLpt690O4EHIsxeJTuSUdybQHoAw3MVDdVY3KL2lQBV+UdE+rECWd:92SSM60OhHgT1nt3KPBV+UdvrEFp7hKw

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/0x000c0000000122e0-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000c0000000122e0-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2276	2024-12-18_573183f44383e8123536a2dd7923d2f4_bkransomware_floxif.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c0000000122e0-1.dat	upx
behavioral1/memory/2276-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2276-6-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-18_573183f44383e8123536a2dd7923d2f4_bkransomware_floxif.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	2024-12-18_573183f44383e8123536a2dd7923d2f4_bkransomware_floxif.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2276	2024-12-18_573183f44383e8123536a2dd7923d2f4_bkransomware_floxif.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-18_573183f44383e8123536a2dd7923d2f4_bkransomware_floxif.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-18_573183f44383e8123536a2dd7923d2f4_bkransomware_floxif.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2276

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

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/2276-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2276-6-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2276-5-0x0000000000E40000-0x0000000000E77000-memory.dmp

Filesize
220KB

Download