floxif | 2f4de80223cd687b04e4dd5130a0cb4d3b759346a722c57d5a682a412156f638

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
17-12-2024 18:26

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General

Target

2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe
Size

2.4MB
MD5

778688b5503c698fd4c446df4d5e6e80
SHA1

dc0fb1f86df56f32aeef76bf5aff3b54cca4e904
SHA256

2f4de80223cd687b04e4dd5130a0cb4d3b759346a722c57d5a682a412156f638
SHA512

fb70555e7f88042a59fd2aeb54c4f60ea74369d7f5d5bd0c61a282d37936a804049ee3c2ac945c9484bbe884aaba497d63de6347d838833cea24fbfff486fa3b
SSDEEP

49152:2pj7AkqIxGrGYyZa/tgrYJUGfZC3wA6EylfwEaFW31qo:e7AfrlyutLxC3sEwwM3Uo

Score

10^/10

floxif backdoor bootkit discovery persistence 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/0x0018000000023c3b-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0018000000023c3b-1.dat	acprotect

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe

Executes dropped EXE 2 IoCs

pid	Process
3624	minidownload.exe
1072	SogouSoftware.exe

Loads dropped DLL 2 IoCs

pid	Process
1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe
1072	SogouSoftware.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2880	arp.exe
2344	arp.exe
4884	arp.exe
4192	arp.exe
2316	arp.exe
4176	arp.exe
4616	arp.exe
4488	arp.exe
4132	arp.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe
File opened for modification	\??\PhysicalDrive0	SogouSoftware.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0018000000023c3b-1.dat	upx
behavioral2/memory/1096-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/1096-72-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 42 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SogouSoftware\download\download\ThunderFW.exe	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\dl_peer_id.dll	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\dl_peer_id.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\MiniTPFw.exe	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\download_engine.dll	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\id.dat	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\msvcr71.dll	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\SogouSoftwareLoader.dll	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\SogouSoftware.exe	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\all-wcprops	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\atl71.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\zlib1.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\text-base\ThunderFW.exe.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\text-base\msvcp71.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\text-base\zlib1.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\crash\.svn\entries	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\download_engine.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\msvcr71.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\text-base\id.dat.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\crash\.svn\prop-base\ExceptionReport.exe.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\msvcp71.dll	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\MiniTPFw.exe.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\ThunderFW.exe.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\msvcp71.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\text-base\msvcr71.dll.svn-base	minidownload.exe
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\MiniThunderPlatform.exe	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\zlib1.dll	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\text-base\MiniTPFw.exe.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\text-base\dl_peer_id.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\crash\ExceptionReport.exe	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\entries	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\text-base\MiniThunderPlatform.exe.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\text-base\download_engine.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\crash\.svn\text-base\ExceptionReport.exe.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\crash\.svn\format	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\xldl.dll	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\atl71.dll	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\format	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\MiniThunderPlatform.exe.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\download\download\.svn\text-base\atl71.dll.svn-base	minidownload.exe
File created	C:\Program Files (x86)\SogouSoftware\crash\.svn\all-wcprops	minidownload.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 12 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	SogouSoftware.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	2024-12-17_778688b5503c698fd4c446df4d5e6e80_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	minidownload.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral2/files/0x0007000000023cba-11.dat	nsis_installer_1
behavioral2/files/0x0007000000023cba-11.dat	nsis_installer_2

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
664	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 2316	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	83
PID 1096 wrote to memory of 2316	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	83
PID 1096 wrote to memory of 2316	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	83
PID 1096 wrote to memory of 2880	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	85
PID 1096 wrote to memory of 2880	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	85
PID 1096 wrote to memory of 2880	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	85
PID 1096 wrote to memory of 2344	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	86
PID 1096 wrote to memory of 2344	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	86
PID 1096 wrote to memory of 2344	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	86
PID 1096 wrote to memory of 4488	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	87
PID 1096 wrote to memory of 4488	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	87
PID 1096 wrote to memory of 4488	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	87
PID 1096 wrote to memory of 4616	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	88
PID 1096 wrote to memory of 4616	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	88
PID 1096 wrote to memory of 4616	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	88
PID 1096 wrote to memory of 4192	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	89
PID 1096 wrote to memory of 4192	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	89
PID 1096 wrote to memory of 4192	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	89
PID 1096 wrote to memory of 4176	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	90
PID 1096 wrote to memory of 4176	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	90
PID 1096 wrote to memory of 4176	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	90
PID 1096 wrote to memory of 4884	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	91
PID 1096 wrote to memory of 4884	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	91
PID 1096 wrote to memory of 4884	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	91
PID 1096 wrote to memory of 4132	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	93
PID 1096 wrote to memory of 4132	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	93
PID 1096 wrote to memory of 4132	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	93
PID 1096 wrote to memory of 3624	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	101
PID 1096 wrote to memory of 3624	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	101
PID 1096 wrote to memory of 3624	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	101
PID 1096 wrote to memory of 1072	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	104
PID 1096 wrote to memory of 1072	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	104
PID 1096 wrote to memory of 1072	1096	2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe	104

C:\Users\Admin\AppData\Local\Temp\2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-17_778688b5503c698fd4c446df4d5e6e80_floxif_mafia.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1096
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 d4-53-ac-dd-fc-4f
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 d6-8e-e5-3c-33-e3
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\arp.exe
  arp -s 37.27.61.182 12-af-d3-24-de-a9
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4488
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 a7-90-70-d8-43-f9
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4616
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 e0-ee-c4-04-b5-6b
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4192
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 2e-e8-e6-ea-b1-a6
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4176
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 22-d6-37-7a-a8-ee
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4884
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 45-31-e5-4d-d9-b2
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4132
- C:\Users\Admin\AppData\Local\Temp\minidownload.exe
  "C:\Users\Admin\AppData\Local\Temp\minidownload.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  PID:3624
- C:\Program Files (x86)\SogouSoftware\SogouSoftware.exe
  "C:\Program Files (x86)\SogouSoftware\SogouSoftware.exe" /Loader /DownLoad?status=true&softurl=https%3A%2F%2Fxiazai.sogou.com%2Fcomm%2Fredir%3Fsoftdown%3D1%26u%3DG30HdQ8G4ngDpbEHfW1gEXYhwD6lzpDc8HlTAHx7scbrxDthotkHK0HexvlOWvJbJd76eqnPU0MQPeaLH3gS2w..%26pcid%3D-2241203717467645359%26fr%3Dxiazai%26source%3Dxixi%26filename%3Dpdfwjt.zip&iconurl=https%3A%2F%2Fpic.cr173.com%2Fup%2F2014-4%2F201449152326.jpg&softname=PDF%E8%BD%AC%E6%8D%A2%E9%80%9A&softsize=19.05MB
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  PID:1072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Network Service Discovery

T1046

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\SogouSoftware\SogouSoftware.exe

Filesize
232KB

MD5
0bc2d003fcfe3fa65f4c3ba7a015fa41

SHA1
72ed85bc1c57259b4f2ed36d16ce3fed4e30607c

SHA256
388069590fb9569b6c498f941d0565416cb52fc803648ee21b8c59917c63eb4b

SHA512
ae8d83e6ca21ee9b0d5e5845fac3a4dc01c6038243da36b4360b2f42763478265cdafc89072c47672b9738de1930e5e5191e2bf91715055cbd16a949d313ff24

Download Submit
C:\Program Files (x86)\SogouSoftware\SogouSoftwareLoader.dll

Filesize
450KB

MD5
b1ce2dba9515e144908aa34ac77f5a46

SHA1
0a3e601eeba273a16d815c5e59793eb73db9daad

SHA256
5a7349e46f16ec394af8575b666c132c010bacaa2c59da472b842ffeccc5623f

SHA512
d0a78b5de9126b8126b531fb8f72ae375aac898930dccd8a61f173c28470895daab56b368c34a5925020dfdc642785651445967904d8756bb1ce7c1d2f95525a

Download Submit
C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\atl71.dll.svn-base

Filesize
53B

MD5
113136892f2137aa0116093a524ade0b

SHA1
a0284943f8ddfe69ceec90833e66d96bdf4a97f0

SHA256
ebbf7e8800c3446bc3a195fa53573bde1073b0bf7581a614372f1391a9286d02

SHA512
d3201cc19ae702a9813aa8bc39612ebaa48138903e9ede64dcadff213691f6e711876aa4fa083887c545325d5d8bf70649523c528090542459f2b01697180e99

Download Submit
C:\Program Files\Common Files\System\symsrv.dll

Filesize
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
C:\Users\Admin\AppData\Local\Temp\minidownload.exe

Filesize
1.9MB

MD5
0618e9851ea4a522abeded8d40c2f19e

SHA1
c6772967fdf545e32d28f3b46e97aec5b9ff99f5

SHA256
506c374fbdf14420306e2da8d123c2138c2ceabd2046178317508a25949d3dc4

SHA512
b8c4816d81aa14646a3b690da76c0d33f59b7d419305638747503dba6bb84a63b906fe7d0ced59850ad25db37c1e0e6f3bd614a902f2f5ffb3d2bf74ec4e571f

Download Submit
memory/1096-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/1096-7-0x00000000002E1000-0x00000000002E2000-memory.dmp

Filesize
4KB

Download
memory/1096-70-0x00000000002E0000-0x000000000052A000-memory.dmp

Filesize
2.3MB

Download
memory/1096-72-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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