floxif | 381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-12-2024 22:29

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General

Target

381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe
Size

9.2MB
MD5

414bb575d2734b3cb8939ec6b00bb69d
SHA1

2b5b86126a9cd3ab3ff3d221b61c255c84cdd103
SHA256

381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94
SHA512

8cf0f3eaf3745cd81c41e3a4395abf30d87cc243d59aef89a18c2e0eebb14a9610131af285c6e9bf92af74fa1d3bc5abc6ba851ad77168c6a805b7c00795c147
SSDEEP

98304:1H3fWjXBdrmqVhxQq05IutOiQwlfatFQzCiClyCNOjuKHONfP6NvUxZXZKvwaQYS:kXEicQb8O98YNZ6wa5Dt2

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
behavioral1/files/0x00080000000120f9-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00080000000120f9-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2732	arp.exe
2896	arp.exe
2884	arp.exe
2776	arp.exe
2676	arp.exe
2764	arp.exe
2652	arp.exe
2880	arp.exe
2192	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1964-3-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/files/0x00080000000120f9-1.dat	upx
behavioral1/memory/1964-7-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.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	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	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.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	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 2732	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	30
PID 1964 wrote to memory of 2732	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	30
PID 1964 wrote to memory of 2732	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	30
PID 1964 wrote to memory of 2732	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	30
PID 1964 wrote to memory of 2896	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	32
PID 1964 wrote to memory of 2896	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	32
PID 1964 wrote to memory of 2896	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	32
PID 1964 wrote to memory of 2896	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	32
PID 1964 wrote to memory of 2676	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	33
PID 1964 wrote to memory of 2676	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	33
PID 1964 wrote to memory of 2676	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	33
PID 1964 wrote to memory of 2676	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	33
PID 1964 wrote to memory of 2884	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	34
PID 1964 wrote to memory of 2884	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	34
PID 1964 wrote to memory of 2884	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	34
PID 1964 wrote to memory of 2884	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	34
PID 1964 wrote to memory of 2764	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	35
PID 1964 wrote to memory of 2764	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	35
PID 1964 wrote to memory of 2764	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	35
PID 1964 wrote to memory of 2764	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	35
PID 1964 wrote to memory of 2652	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	36
PID 1964 wrote to memory of 2652	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	36
PID 1964 wrote to memory of 2652	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	36
PID 1964 wrote to memory of 2652	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	36
PID 1964 wrote to memory of 2776	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	37
PID 1964 wrote to memory of 2776	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	37
PID 1964 wrote to memory of 2776	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	37
PID 1964 wrote to memory of 2776	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	37
PID 1964 wrote to memory of 2192	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	39
PID 1964 wrote to memory of 2192	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	39
PID 1964 wrote to memory of 2192	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	39
PID 1964 wrote to memory of 2192	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	39
PID 1964 wrote to memory of 2880	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	40
PID 1964 wrote to memory of 2880	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	40
PID 1964 wrote to memory of 2880	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	40
PID 1964 wrote to memory of 2880	1964	381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe	40

C:\Users\Admin\AppData\Local\Temp\381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe
"C:\Users\Admin\AppData\Local\Temp\381dbadb1613e5fa3e013f69abc6c01b3ee6510a5944b02e3c69c4e0f59a3e94.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 ce-41-db-86-b6-cc
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2896
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 5c-87-27-ab-ca-1a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\arp.exe
  arp -s 37.27.61.183 75-82-08-e8-14-b5
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 a2-4d-23-e7-63-a7
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2764
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 a4-1e-5a-98-8e-d7
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2652
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 dd-52-f5-52-8b-cf
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2776
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 42-43-29-75-15-07
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2192
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 d7-4d-47-32-3b-8e
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2880

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

Replay Monitor

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Downloads

\Program Files\Common Files\System\symsrv.dll

Filesize
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/1964-3-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/1964-7-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/1964-5-0x0000000000A10000-0x000000000143D000-memory.dmp

Filesize
10.2MB

Download