floxif | 6f166f69dc3db2195a3f54f7fe414a36294d5bc895e5c91210607527428f4f60

Analysis

max time kernel
93s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 00:24

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General

Target

2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe
Size

272KB
MD5

73f92f4a53e17201a590bef1c994363e
SHA1

a143e2d3024fd88ecd3c46a28e41b71dbbe1f263
SHA256

6f166f69dc3db2195a3f54f7fe414a36294d5bc895e5c91210607527428f4f60
SHA512

7570deec048fcd3b511f510452090f705c60f97023603ca0f83a8a4f3d9ce82c93e612813afcc7610321a8e3d18d26b11b7ef4aab7e6676f28af60b4eb6307e2
SSDEEP

6144:2MMZlyIxgyVu7kTEUET+l2AbpLk0cusQvMRlkM4RD/qzMfUCzA:zMZlTakT1KG2qk0nMRGM4h/qofxc

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/0x000a000000023c0f-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000a000000023c0f-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
3344	arp.exe
1568	arp.exe
4448	arp.exe
812	arp.exe
4492	arp.exe
2380	arp.exe
5092	arp.exe
528	arp.exe
100	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000a000000023c0f-1.dat	upx
behavioral2/memory/1512-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/1512-9-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe

System Location Discovery: System Language Discovery 1 TTPs 10 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	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 2380	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	82
PID 1512 wrote to memory of 2380	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	82
PID 1512 wrote to memory of 2380	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	82
PID 1512 wrote to memory of 3344	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	84
PID 1512 wrote to memory of 3344	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	84
PID 1512 wrote to memory of 3344	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	84
PID 1512 wrote to memory of 5092	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	85
PID 1512 wrote to memory of 5092	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	85
PID 1512 wrote to memory of 5092	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	85
PID 1512 wrote to memory of 812	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	86
PID 1512 wrote to memory of 812	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	86
PID 1512 wrote to memory of 812	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	86
PID 1512 wrote to memory of 4448	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	87
PID 1512 wrote to memory of 4448	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	87
PID 1512 wrote to memory of 4448	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	87
PID 1512 wrote to memory of 4492	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	88
PID 1512 wrote to memory of 4492	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	88
PID 1512 wrote to memory of 4492	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	88
PID 1512 wrote to memory of 1568	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	89
PID 1512 wrote to memory of 1568	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	89
PID 1512 wrote to memory of 1568	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	89
PID 1512 wrote to memory of 100	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	90
PID 1512 wrote to memory of 100	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	90
PID 1512 wrote to memory of 100	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	90
PID 1512 wrote to memory of 528	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	92
PID 1512 wrote to memory of 528	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	92
PID 1512 wrote to memory of 528	1512	2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-18_73f92f4a53e17201a590bef1c994363e_floxif_mafia.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 3c-be-fb-54-54-05
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3344
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 b7-6b-77-32-59-9e
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:5092
- C:\Windows\SysWOW64\arp.exe
  arp -s 37.27.61.180 4a-90-2e-f8-4c-0d
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:812
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 b8-4c-2f-42-6c-a5
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4448
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 9b-9f-30-d1-09-e2
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4492
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 ca-81-02-8c-55-fa
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:1568
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 19-17-59-68-99-4e
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:100
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 89-7e-05-d9-37-8d
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

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
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/1512-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/1512-7-0x0000000000EE0000-0x0000000000F12000-memory.dmp

Filesize
200KB

Download
memory/1512-9-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/1512-6-0x0000000000EE1000-0x0000000000EE2000-memory.dmp

Filesize
4KB

Download