floxif | 2bfb82a8c64cafabfbbe50fa95781c1fcda2294ead0fb0dc7a2b87ca118cac48

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
20-12-2024 08:38

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General

Target

2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe
Size

4.7MB
MD5

06e4c00a7930bed72d28d32592b5c908
SHA1

c13c125f76e52c2d979706d730fad6b58ed67406
SHA256

2bfb82a8c64cafabfbbe50fa95781c1fcda2294ead0fb0dc7a2b87ca118cac48
SHA512

f51af39a10f20b181207f9bd0987cb20cff013ea7fc303f69de6cd70314c3088c9cf80b8e5ad08dd5829c81afe1b7b9d19ba97abbf3fcff19d1bb752d07d4e3d
SSDEEP

98304:tBe40bl9dRPenSX5gSoCC0DHDB1dE46V3u/s:a3NenqC8L/s

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/0x00070000000120fb-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00070000000120fb-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2720	2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00070000000120fb-1.dat	upx
behavioral1/memory/2720-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2720-7-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2720	2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-20_06e4c00a7930bed72d28d32592b5c908_bkransomware_floxif.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/2720-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2720-7-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2720-5-0x0000000000B90000-0x0000000001051000-memory.dmp

Filesize
4.8MB

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