floxif | c3361c770fbd39d23028233384972993ce8926521767555858742d42930cc0bc

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05/01/2025, 00:26

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General

Target

2025-01-05_c60c7f9b5d9c86e94fa99ec4cdb3919e_avoslocker_floxif_luca-stealer.exe
Size

7.4MB
MD5

c60c7f9b5d9c86e94fa99ec4cdb3919e
SHA1

10809861023ca5aab48ee8ad993da04a8114cb27
SHA256

c3361c770fbd39d23028233384972993ce8926521767555858742d42930cc0bc
SHA512

ffd568f2f4300e9428cb856d5f18a246648ce250f3f0f0e97ec3a8fff4081f0b710fc92a8616105bc83ce66154c493f91f8e20166da248dec64fca330128dc74
SSDEEP

98304:sz16s9EwkidrwQwPNz9u/ZZmDZJErbXQbZT7wIX02t:sz16gBrd3Eu/XmDZib0tt

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/0x0010000000023b7d-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/0x0010000000023b7d-1.dat	acprotect

Loads dropped DLL 5 IoCs

pid	Process
3744	2025-01-05_c60c7f9b5d9c86e94fa99ec4cdb3919e_avoslocker_floxif_luca-stealer.exe
1480	WerFault.exe
404	WerFault.exe
3184	WerFault.exe
5084	WerFault.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0010000000023b7d-1.dat	upx
behavioral2/memory/3744-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3744-11-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2025-01-05_c60c7f9b5d9c86e94fa99ec4cdb3919e_avoslocker_floxif_luca-stealer.exe

Program crash 5 IoCs

pid	pid_target	Process	procid_target
2316	3744	WerFault.exe	81
4652	3744	WerFault.exe	81
976	3744	WerFault.exe	81
404	3744	WerFault.exe	81
5084	3744	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	2025-01-05_c60c7f9b5d9c86e94fa99ec4cdb3919e_avoslocker_floxif_luca-stealer.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3744	2025-01-05_c60c7f9b5d9c86e94fa99ec4cdb3919e_avoslocker_floxif_luca-stealer.exe

C:\Users\Admin\AppData\Local\Temp\2025-01-05_c60c7f9b5d9c86e94fa99ec4cdb3919e_avoslocker_floxif_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-05_c60c7f9b5d9c86e94fa99ec4cdb3919e_avoslocker_floxif_luca-stealer.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 516
  2⤵
  - Program crash
  PID:2316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 524
  2⤵
  - Program crash
  PID:4652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 536
  2⤵
  - Program crash
  PID:976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 620
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 640
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:5084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3744 -ip 3744
1⤵
PID:3608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3744 -ip 3744
1⤵
PID:3000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3744 -ip 3744
1⤵
PID:3588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3744 -ip 3744
1⤵
- Loads dropped DLL
PID:1480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3744 -ip 3744
1⤵
- Loads dropped DLL
PID:3184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

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/3744-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3744-11-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3744-9-0x0000000000410000-0x0000000000B61000-memory.dmp

Filesize
7.3MB

Download