floxif | 2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb

Analysis

max time kernel
149s
max time network
151s
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 20:57

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General

Target

2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe
Size

9.2MB
MD5

d432499fd3e71fdd8db320f50be51497
SHA1

401789ff3159e111437dd0c79d4d3d5ddf1959e3
SHA256

2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb
SHA512

5d67a97599389a90b52c0fa6a4a31ca4eef9c737ffac5672194943e0522b8be64b48ec794cfc168df4f04ce9f3537e79adb263cd530be6712800e94bf1d83e45
SSDEEP

98304:1H3fWGXBdrmqVhxQq05IutOiQwlfatFQzCiCly+NOjuKHONfP6NmUxZXZKvwaQYF:BXEicsb8O98RNZ6wa5Dtx

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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/0x000c000000023b6c-1.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b6c-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
4136	arp.exe
220	arp.exe
4056	arp.exe
612	arp.exe
3476	arp.exe
116	arp.exe
3992	arp.exe
4856	arp.exe
4400	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b6c-1.dat	upx
behavioral2/memory/3140-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/3140-10-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.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	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.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 behavior: LoadsDriver 1 IoCs

pid	Process
660	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3140 wrote to memory of 116	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	82
PID 3140 wrote to memory of 116	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	82
PID 3140 wrote to memory of 116	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	82
PID 3140 wrote to memory of 4136	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	84
PID 3140 wrote to memory of 4136	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	84
PID 3140 wrote to memory of 4136	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	84
PID 3140 wrote to memory of 4400	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	85
PID 3140 wrote to memory of 4400	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	85
PID 3140 wrote to memory of 4400	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	85
PID 3140 wrote to memory of 3476	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	86
PID 3140 wrote to memory of 3476	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	86
PID 3140 wrote to memory of 3476	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	86
PID 3140 wrote to memory of 4856	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	87
PID 3140 wrote to memory of 4856	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	87
PID 3140 wrote to memory of 4856	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	87
PID 3140 wrote to memory of 612	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	88
PID 3140 wrote to memory of 612	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	88
PID 3140 wrote to memory of 612	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	88
PID 3140 wrote to memory of 3992	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	89
PID 3140 wrote to memory of 3992	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	89
PID 3140 wrote to memory of 3992	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	89
PID 3140 wrote to memory of 4056	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	90
PID 3140 wrote to memory of 4056	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	90
PID 3140 wrote to memory of 4056	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	90
PID 3140 wrote to memory of 220	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	91
PID 3140 wrote to memory of 220	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	91
PID 3140 wrote to memory of 220	3140	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	91

C:\Users\Admin\AppData\Local\Temp\2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe
"C:\Users\Admin\AppData\Local\Temp\2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.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:3140
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:116
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 ff-23-d2-8d-ff-fd
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4136
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 48-1d-a0-1d-af-74
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4400
- C:\Windows\SysWOW64\arp.exe
  arp -s 136.243.69.123 e2-9a-f1-48-3f-d2
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3476
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 76-8d-11-a3-0a-af
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4856
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 68-6d-4f-5d-e7-92
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:612
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 b2-71-15-b8-d7-e4
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3992
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 98-d3-53-64-be-de
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4056
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 4b-16-8f-f8-b5-ed
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:220

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

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/3140-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3140-7-0x0000000000231000-0x0000000000232000-memory.dmp

Filesize
4KB

Download
memory/3140-10-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3140-8-0x0000000000230000-0x0000000000C5D000-memory.dmp

Filesize
10.2MB

Download