floxif | 435ac3af7ab05ef8de79e5e8c3879828d31d2e563a632e7361577f823ac02c24

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12/12/2024, 11:22

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General

Target

2024-12-12_123f9e02e2a3598bd21b6fc7a7d2e633_bkransomware_floxif.exe
Size

4.7MB
MD5

123f9e02e2a3598bd21b6fc7a7d2e633
SHA1

4c50eef87f051e09d978a7ce83f8fe5d5adc129b
SHA256

435ac3af7ab05ef8de79e5e8c3879828d31d2e563a632e7361577f823ac02c24
SHA512

8a100759e52b588b587d21e8a8a8d0a9534b408134902b9dd35c281ee330b35210c49051da811287289a22527578bf42afce3030558bc063068e7bf96b605709
SSDEEP

98304:kBe40bl9dRPenSX5gaoCX0DHDB1dE46V3u/c:h3NenKX8L/c

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/0x000a00000001227e-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000a00000001227e-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2492	2024-12-12_123f9e02e2a3598bd21b6fc7a7d2e633_bkransomware_floxif.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000a00000001227e-1.dat	upx
behavioral1/memory/2492-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2492-7-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-12_123f9e02e2a3598bd21b6fc7a7d2e633_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	2024-12-12_123f9e02e2a3598bd21b6fc7a7d2e633_bkransomware_floxif.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2492	2024-12-12_123f9e02e2a3598bd21b6fc7a7d2e633_bkransomware_floxif.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2492	2024-12-12_123f9e02e2a3598bd21b6fc7a7d2e633_bkransomware_floxif.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-12_123f9e02e2a3598bd21b6fc7a7d2e633_bkransomware_floxif.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-12_123f9e02e2a3598bd21b6fc7a7d2e633_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:2492

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/2492-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2492-5-0x0000000001040000-0x0000000001501000-memory.dmp

Filesize
4.8MB

Download
memory/2492-7-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download