floxif | 1a944de7142b6403dad130f80c3c2f3fcc23841668d5f3939668c958a8e1cf6f

Analysis

max time kernel
148s
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
21-12-2024 12:39

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General

Target

2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe
Size

1.7MB
MD5

a9fc0bc3218ad94c8195dbf15b24c493
SHA1

99b14836d824380b795921ff18fa9681c3b4cce7
SHA256

1a944de7142b6403dad130f80c3c2f3fcc23841668d5f3939668c958a8e1cf6f
SHA512

8190af6b3e8892c7c4a4fc1c326a0c987cc97d5a9bec23c9baf3e252f3f8bf0cbaeb8b6b30353b6b63164ac0f31dfef1a034ff2396d1bee56f25d6dd11f6ec70
SSDEEP

49152:Kf+nVJ+cqAWsyl+Snc7nKMdTRmq3+sxx+2CDQFZNB5kKIhpOkE/U:9+cqAWsyYSnc7nKMdTRme5x+2CSrkKIb

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/0x0009000000023c57-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0009000000023c57-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4028	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_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:	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0009000000023c57-1.dat	upx
behavioral2/memory/4028-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4028-14-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe

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	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4028	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe
4028	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4028	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe
Token: SeBackupPrivilege	1968	vssvc.exe
Token: SeRestorePrivilege	1968	vssvc.exe
Token: SeAuditPrivilege	1968	vssvc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4028	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4028 wrote to memory of 3876	4028	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe	83
PID 4028 wrote to memory of 3876	4028	2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe	83

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_floxif_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-21_a9fc0bc3218ad94c8195dbf15b24c493_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
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4028
- C:\Windows\System32\SystemPropertiesProtection.exe
  C:\Windows\System32\SystemPropertiesProtection.exe
  2⤵
  PID:3876

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1968

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/4028-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4028-6-0x00000000007D1000-0x00000000007D2000-memory.dmp

Filesize
4KB

Download
memory/4028-14-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4028-12-0x00000000007D0000-0x000000000097E000-memory.dmp

Filesize
1.7MB

Download