floxif | db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1

Analysis

max time kernel
113s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 23:29

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General

Target

db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe
Size

1.2MB
MD5

e5c1ab2dc09caab3114058b9279baab0
SHA1

af927f58671efeb2398a97306038a3ba9722dafd
SHA256

db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1
SHA512

61812fc829dd57c9c232423864386da1da456c185d44fd78d7c6436b5449c332e1a19a66d1fcc49e298f247097ca0b80266b84f37471edbd666def424a90d875
SSDEEP

24576:3r7mNJG//19XnuJXQaXlubv9bNVyvg3EfzGr9MRGJ/qofD:32OnL+Qiu9bNVyIuz41qK

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/0x0032000000023b74-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0032000000023b74-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.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:	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2680	arp.exe
764	arp.exe
512	arp.exe
3964	arp.exe
2072	arp.exe
392	arp.exe
2864	arp.exe
4240	arp.exe
4292	arp.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3440-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/files/0x0032000000023b74-1.dat	upx
behavioral2/memory/3440-10-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/3440-9-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/3440-14-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.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	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.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 behavior: EnumeratesProcesses 6 IoCs

pid	Process
3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe
3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe
3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe
3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe
3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe
3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
664	Process not Found
664	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3440 wrote to memory of 2072	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	82
PID 3440 wrote to memory of 2072	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	82
PID 3440 wrote to memory of 2072	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	82
PID 3440 wrote to memory of 4292	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	84
PID 3440 wrote to memory of 4292	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	84
PID 3440 wrote to memory of 4292	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	84
PID 3440 wrote to memory of 3964	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	85
PID 3440 wrote to memory of 3964	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	85
PID 3440 wrote to memory of 3964	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	85
PID 3440 wrote to memory of 512	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	86
PID 3440 wrote to memory of 512	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	86
PID 3440 wrote to memory of 512	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	86
PID 3440 wrote to memory of 4240	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	87
PID 3440 wrote to memory of 4240	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	87
PID 3440 wrote to memory of 4240	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	87
PID 3440 wrote to memory of 2864	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	88
PID 3440 wrote to memory of 2864	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	88
PID 3440 wrote to memory of 2864	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	88
PID 3440 wrote to memory of 392	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	89
PID 3440 wrote to memory of 392	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	89
PID 3440 wrote to memory of 392	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	89
PID 3440 wrote to memory of 2680	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	90
PID 3440 wrote to memory of 2680	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	90
PID 3440 wrote to memory of 2680	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	90
PID 3440 wrote to memory of 764	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	91
PID 3440 wrote to memory of 764	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	91
PID 3440 wrote to memory of 764	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	91
PID 3440 wrote to memory of 2276	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	105
PID 3440 wrote to memory of 2276	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	105
PID 3440 wrote to memory of 2276	3440	db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe	105

C:\Users\Admin\AppData\Local\Temp\db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.exe
"C:\Users\Admin\AppData\Local\Temp\db9fdaff9c780227ed125c2866765da6bd1ef72cdf7a8cf903ac558dcc3831b1N.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:3440
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2072
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 3a-48-79-d8-71-1f
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4292
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 19-a7-72-4f-03-f4
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3964
- C:\Windows\SysWOW64\arp.exe
  arp -s 37.27.61.183 76-f4-a3-14-3e-c2
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:512
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 62-15-a8-50-d9-42
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4240
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 a6-64-bd-7d-60-ee
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2864
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 20-0f-c9-df-e1-ed
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:392
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 7d-ad-51-b6-5b-72
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 fb-2d-5d-72-2e-14
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:764
- C:\Windows\SysWOW64\arp.exe
  arp -d
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2276

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/3440-17-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-19-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-8-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-9-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3440-13-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-14-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3440-10-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3440-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3440-15-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-21-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-23-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-25-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-27-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-29-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-31-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download