floxif | 85c38bf2eb35a4a51e23cf70377ab65c2acbd6fb9ed2532f83f5b6bd25e79824

Analysis

max time kernel
149s
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
27-12-2024 12:24

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General

Target

2024-12-27_0c1961d8dffb9c2fec886f75017bfd50_floxif_hijackloader_mafia.exe
Size

2.7MB
MD5

0c1961d8dffb9c2fec886f75017bfd50
SHA1

906f82639471ef6e959eb739caa4b105b65b89b5
SHA256

85c38bf2eb35a4a51e23cf70377ab65c2acbd6fb9ed2532f83f5b6bd25e79824
SHA512

8aca2759cc8c2839c2e34eaec42fa96eb6be5f6726af9632017f5047a23bfcda089bd3ec3c05fb6513aac3b51e29ae3849330b51667a465854b49594b62fe4f5
SSDEEP

49152:2Pf6VdMQTNRbg23shkNw//7vgssqziRS1UsrzoeNFZeW5c71y9Bx4M3W/KMZKWKD:2q1Rz3ssw//7vgfqziRS1UsrzppB5y1a

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/0x000c000000023b1f-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b1f-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4856	2024-12-27_0c1961d8dffb9c2fec886f75017bfd50_floxif_hijackloader_mafia.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b1f-1.dat	upx
behavioral2/memory/4856-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4856-9-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-27_0c1961d8dffb9c2fec886f75017bfd50_floxif_hijackloader_mafia.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3812	4856	WerFault.exe	81

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	2024-12-27_0c1961d8dffb9c2fec886f75017bfd50_floxif_hijackloader_mafia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4856	2024-12-27_0c1961d8dffb9c2fec886f75017bfd50_floxif_hijackloader_mafia.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4856	2024-12-27_0c1961d8dffb9c2fec886f75017bfd50_floxif_hijackloader_mafia.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-27_0c1961d8dffb9c2fec886f75017bfd50_floxif_hijackloader_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-27_0c1961d8dffb9c2fec886f75017bfd50_floxif_hijackloader_mafia.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:4856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 804
  2⤵
  - Program crash
  PID:3812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4856 -ip 4856
1⤵
PID:1696

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

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/4856-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4856-6-0x00000000000C1000-0x00000000000C2000-memory.dmp

Filesize
4KB

Download
memory/4856-9-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4856-7-0x00000000000C0000-0x0000000000368000-memory.dmp

Filesize
2.7MB

Download