floxif | 21a030c17af7040575c6c6fe49b23b7feb8d63a355d7184a5f48e3041318d929

General

Target

2024-12-12_f7abd74a4899355a9032aabc84323f78_avoslocker_floxif_hijackloader_luca-stealer_revil.exe
Size

4.4MB
MD5

f7abd74a4899355a9032aabc84323f78
SHA1

40b953a9b204078af729dcc210e970f65bc8d84c
SHA256

21a030c17af7040575c6c6fe49b23b7feb8d63a355d7184a5f48e3041318d929
SHA512

bb50aac8866dfe70ac4768e15662baef6ae37c94f6b647e3764eae1ab84abb7ac73cb6dd31fde362e8675bef9ffeba3c92ae41924679de75295d8bf44d63d73a
SSDEEP

98304:0shJ/H4z/MP9EKjnV5F6ZEF7Bqt/VvU3ri3vYwjZ:0u/IYnV5FgEKvhfYUZ

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/0x000e000000023b92-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000e000000023b92-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1268	2024-12-12_f7abd74a4899355a9032aabc84323f78_avoslocker_floxif_hijackloader_luca-stealer_revil.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:	2024-12-12_f7abd74a4899355a9032aabc84323f78_avoslocker_floxif_hijackloader_luca-stealer_revil.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000e000000023b92-1.dat	upx
behavioral2/memory/1268-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1268-13-0x0000000010000000-0x0000000010030000-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_f7abd74a4899355a9032aabc84323f78_avoslocker_floxif_hijackloader_luca-stealer_revil.exe

Program crash 5 IoCs

pid	pid_target	Process	procid_target
4236	1268	WerFault.exe	82
400	1268	WerFault.exe	82
1340	1268	WerFault.exe	82
2184	1268	WerFault.exe	82
3956	1268	WerFault.exe	82

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_f7abd74a4899355a9032aabc84323f78_avoslocker_floxif_hijackloader_luca-stealer_revil.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1268	2024-12-12_f7abd74a4899355a9032aabc84323f78_avoslocker_floxif_hijackloader_luca-stealer_revil.exe
1268	2024-12-12_f7abd74a4899355a9032aabc84323f78_avoslocker_floxif_hijackloader_luca-stealer_revil.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1268	2024-12-12_f7abd74a4899355a9032aabc84323f78_avoslocker_floxif_hijackloader_luca-stealer_revil.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-12_f7abd74a4899355a9032aabc84323f78_avoslocker_floxif_hijackloader_luca-stealer_revil.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-12_f7abd74a4899355a9032aabc84323f78_avoslocker_floxif_hijackloader_luca-stealer_revil.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:1268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 580
  2⤵
  - Program crash
  PID:4236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 588
  2⤵
  - Program crash
  PID:400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 656
  2⤵
  - Program crash
  PID:1340
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 676
  2⤵
  - Program crash
  PID:2184
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 604
  2⤵
  - Program crash
  PID:3956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1268 -ip 1268
1⤵
PID:3688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1268 -ip 1268
1⤵
PID:216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1268 -ip 1268
1⤵
PID:2060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1268 -ip 1268
1⤵
PID:2736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1268 -ip 1268
1⤵
PID:368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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/1268-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1268-13-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1268-11-0x0000000000410000-0x0000000000874000-memory.dmp

Filesize
4.4MB

Download

Analysis

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