floxif | 6fca8fc555d7d0bf90b2d93b9d5d74b543e06f20f2f4e04a7a308e7302c3eac5

General

Target

2025-02-07_634f9499b2c311973a6f09ca011ce899_floxif_mafia.exe
Size

2.5MB
MD5

634f9499b2c311973a6f09ca011ce899
SHA1

af6906ab7dd7e42a970303171a0fba2acc4d6ef5
SHA256

6fca8fc555d7d0bf90b2d93b9d5d74b543e06f20f2f4e04a7a308e7302c3eac5
SHA512

85933cb26de5409c77774813816d08ec53a8852221c0ba61be3c0d7021fce01b85d66e1af2d8e2bf37ffefbfa22e3694147d578c0af57b4f76b2dcacef4ef2af
SSDEEP

49152:tuIIApofs2hPd2l177BTK2VbDsar1YDjW:tjSfs2hPIl1/N

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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/0x000d000000023b61-1.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000d000000023b61-1.dat	acprotect

Loads dropped DLL 7 IoCs

pid	Process
4972	2025-02-07_634f9499b2c311973a6f09ca011ce899_floxif_mafia.exe
1976	WerFault.exe
2492	WerFault.exe
4416	WerFault.exe
716	WerFault.exe
4604	WerFault.exe
1780	WerFault.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	2025-02-07_634f9499b2c311973a6f09ca011ce899_floxif_mafia.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4972-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/files/0x000d000000023b61-1.dat	upx
behavioral2/memory/4972-19-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2025-02-07_634f9499b2c311973a6f09ca011ce899_floxif_mafia.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
4416	4972	WerFault.exe	83
716	4972	WerFault.exe	83
1780	4972	WerFault.exe	83

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	2025-02-07_634f9499b2c311973a6f09ca011ce899_floxif_mafia.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4972	2025-02-07_634f9499b2c311973a6f09ca011ce899_floxif_mafia.exe
4972	2025-02-07_634f9499b2c311973a6f09ca011ce899_floxif_mafia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4972	2025-02-07_634f9499b2c311973a6f09ca011ce899_floxif_mafia.exe

C:\Users\Admin\AppData\Local\Temp\2025-02-07_634f9499b2c311973a6f09ca011ce899_floxif_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_634f9499b2c311973a6f09ca011ce899_floxif_mafia.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 832
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:4416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 908
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 840
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:1780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4972 -ip 4972
1⤵
- Loads dropped DLL
PID:1976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4972 -ip 4972
1⤵
- Loads dropped DLL
PID:2492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4972 -ip 4972
1⤵
- Loads dropped DLL
PID:4604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Privilege Escalation

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

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/4972-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4972-6-0x0000000000681000-0x0000000000682000-memory.dmp

Filesize
4KB

Download
memory/4972-19-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4972-17-0x0000000000680000-0x00000000008EA000-memory.dmp

Filesize
2.4MB

Download

Analysis

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