floxif | dcf541ecfab35be906567f19ed945b65efa857ed2339948ad74fb61f3f4a574d

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 12:26

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General

Target

2024-12-31_ca5cd6d54ccb12a6292ac1f78c0cb53b_bkransomware_floxif_hijackloader.exe
Size

2.4MB
MD5

ca5cd6d54ccb12a6292ac1f78c0cb53b
SHA1

0dbac05df095248588d2b329c25d62e104a0216d
SHA256

dcf541ecfab35be906567f19ed945b65efa857ed2339948ad74fb61f3f4a574d
SHA512

d0543048b103f15963e7bdb5dc5aeb44d614deedaf093bb9e502bf48d97b8ee5c16383d5e85342fc561e8600aff2cf1f00db7dff94aca79e093e9e45d3d96705
SSDEEP

49152:DSd9/hDMOvWHkl0m+EGynI2uvtOQR4um17NOgpe5i3fNItc+eY:DU9/hIOvWEl0iGyI2uvMRBPe5i3fN+

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
behavioral2/files/0x000c000000023ba7-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023ba7-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2644	2024-12-31_ca5cd6d54ccb12a6292ac1f78c0cb53b_bkransomware_floxif_hijackloader.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023ba7-1.dat	upx
behavioral2/memory/2644-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2644-15-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-31_ca5cd6d54ccb12a6292ac1f78c0cb53b_bkransomware_floxif_hijackloader.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	2024-12-31_ca5cd6d54ccb12a6292ac1f78c0cb53b_bkransomware_floxif_hijackloader.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	2024-12-31_ca5cd6d54ccb12a6292ac1f78c0cb53b_bkransomware_floxif_hijackloader.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2644	2024-12-31_ca5cd6d54ccb12a6292ac1f78c0cb53b_bkransomware_floxif_hijackloader.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-31_ca5cd6d54ccb12a6292ac1f78c0cb53b_bkransomware_floxif_hijackloader.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-31_ca5cd6d54ccb12a6292ac1f78c0cb53b_bkransomware_floxif_hijackloader.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2644

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

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Downloads

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2644-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2644-15-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2644-13-0x0000000000570000-0x00000000007D0000-memory.dmp

Filesize
2.4MB

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