floxif | 84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0f

Analysis

max time kernel
112s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 09:38

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General

Target

84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe
Size

1.2MB
MD5

00ed7fb2c632fb33fca53e8e8c211d10
SHA1

d4a348cd8004b39a314f0992207898c10efdd786
SHA256

84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0f
SHA512

6676cd439624d2241b59c44861a4c0571973b382193e0c1621f161253eccd7632c4c68e48c2c2f5f3904a04e2cc53c1d4118012f66912d31d9666877ccbf4e86
SSDEEP

24576:c5r7mNJG//19XncJXQaXlubv9bNVyvg3EfzGr9MRGJ/qofhE:+2OnLgQiu9bNVyIuz41qH

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/0x000a000000023c44-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000a000000023c44-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.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:	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
4784	arp.exe
2132	arp.exe
3968	arp.exe
1060	arp.exe
3676	arp.exe
4656	arp.exe
3464	arp.exe
2608	arp.exe
532	arp.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000a000000023c44-1.dat	upx
behavioral2/memory/4924-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/4924-10-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/4924-9-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/4924-14-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/4924-26-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe

System Location Discovery: System Language Discovery 1 TTPs 11 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	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	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe
4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe
4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe
4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe
4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe
4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
676	Process not Found
676	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 4924 wrote to memory of 3676	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	85
PID 4924 wrote to memory of 3676	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	85
PID 4924 wrote to memory of 3676	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	85
PID 4924 wrote to memory of 4784	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	87
PID 4924 wrote to memory of 4784	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	87
PID 4924 wrote to memory of 4784	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	87
PID 4924 wrote to memory of 532	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	88
PID 4924 wrote to memory of 532	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	88
PID 4924 wrote to memory of 532	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	88
PID 4924 wrote to memory of 4656	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	89
PID 4924 wrote to memory of 4656	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	89
PID 4924 wrote to memory of 4656	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	89
PID 4924 wrote to memory of 1060	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	90
PID 4924 wrote to memory of 1060	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	90
PID 4924 wrote to memory of 1060	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	90
PID 4924 wrote to memory of 2608	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	91
PID 4924 wrote to memory of 2608	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	91
PID 4924 wrote to memory of 2608	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	91
PID 4924 wrote to memory of 3464	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	92
PID 4924 wrote to memory of 3464	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	92
PID 4924 wrote to memory of 3464	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	92
PID 4924 wrote to memory of 3968	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	93
PID 4924 wrote to memory of 3968	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	93
PID 4924 wrote to memory of 3968	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	93
PID 4924 wrote to memory of 2132	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	94
PID 4924 wrote to memory of 2132	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	94
PID 4924 wrote to memory of 2132	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	94
PID 4924 wrote to memory of 380	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	109
PID 4924 wrote to memory of 380	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	109
PID 4924 wrote to memory of 380	4924	84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe	109

C:\Users\Admin\AppData\Local\Temp\84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.exe
"C:\Users\Admin\AppData\Local\Temp\84477ca8ff52d1c98436ea82736f0632ad797ea7db359738e9839f685a58bd0fN.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 WriteProcessMemory
PID:4924
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3676
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 b6-05-74-a3-55-4d
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4784
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 86-86-e7-8c-55-22
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:532
- C:\Windows\SysWOW64\arp.exe
  arp -s 37.27.61.184 fc-aa-69-1f-fd-1e
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4656
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 b4-e1-9e-e4-c6-70
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:1060
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 7e-36-bd-b4-50-96
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2608
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 0b-47-10-be-3d-3a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3464
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 5f-98-5b-e3-35-b8
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3968
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 3d-f7-8f-4f-e3-42
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2132
- C:\Windows\SysWOW64\arp.exe
  arp -d
  2⤵
  - System Location Discovery: System Language Discovery
  PID:380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

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

Replay Monitor

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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/4924-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4924-10-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4924-8-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4924-9-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4924-13-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4924-14-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4924-15-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4924-17-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4924-19-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4924-21-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4924-23-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4924-26-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4924-25-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4924-27-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4924-29-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4924-31-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download