floxif | d91a32a0f139ca8693ca18e27c76be96dfafde614b942a91bdf463bb7f5b9acf

Analysis

max time kernel
94s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-12-2024 12:43

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General

Target

2024-12-13_f99bbeb0e414eb67cdc80320d7ecd584_floxif_mafia.exe
Size

2.5MB
MD5

f99bbeb0e414eb67cdc80320d7ecd584
SHA1

96914a7b26671c57a8097e7cd9677b8aad871787
SHA256

d91a32a0f139ca8693ca18e27c76be96dfafde614b942a91bdf463bb7f5b9acf
SHA512

b02f88bec39af95c63c661cfb138e10e7ecc1fc4ea6b0c2ca3967bb344be85b00a07d28f38558f7c16ecc23dabdba02ede0ab265cd6a439b2ac10f2da8c0bc4e
SSDEEP

49152:puIIKjofs2hPd2l177BTK2VbDsar1YDjW:pj6fs2hPIl1/t

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/0x000b000000023bc4-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000b000000023bc4-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4568	2024-12-13_f99bbeb0e414eb67cdc80320d7ecd584_floxif_mafia.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:	2024-12-13_f99bbeb0e414eb67cdc80320d7ecd584_floxif_mafia.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000b000000023bc4-1.dat	upx
behavioral2/memory/4568-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4568-13-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-13_f99bbeb0e414eb67cdc80320d7ecd584_floxif_mafia.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
852	4568	WerFault.exe	81
4480	4568	WerFault.exe	81
4800	4568	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	2024-12-13_f99bbeb0e414eb67cdc80320d7ecd584_floxif_mafia.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4568	2024-12-13_f99bbeb0e414eb67cdc80320d7ecd584_floxif_mafia.exe
4568	2024-12-13_f99bbeb0e414eb67cdc80320d7ecd584_floxif_mafia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4568	2024-12-13_f99bbeb0e414eb67cdc80320d7ecd584_floxif_mafia.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-13_f99bbeb0e414eb67cdc80320d7ecd584_floxif_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-13_f99bbeb0e414eb67cdc80320d7ecd584_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:4568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4568 -s 932
  2⤵
  - Program crash
  PID:4480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4568 -s 836
  2⤵
  - Program crash
  PID:852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4568 -s 968
  2⤵
  - Program crash
  PID:4800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4568 -ip 4568
1⤵
PID:2068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4568 -ip 4568
1⤵
PID:4916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4568 -ip 4568
1⤵
PID:1136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

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/4568-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4568-6-0x0000000000B71000-0x0000000000B72000-memory.dmp

Filesize
4KB

Download
memory/4568-11-0x0000000000B70000-0x0000000000DDA000-memory.dmp

Filesize
2.4MB

Download
memory/4568-13-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download