floxif | 2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb

Analysis

max time kernel
93s
max time network
152s
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 21:06

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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 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/0x000c000000023b14-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b14-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
3100	arp.exe
112	arp.exe
4620	arp.exe
2808	arp.exe
1116	arp.exe
212	arp.exe
3904	arp.exe
2544	arp.exe
4172	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b14-1.dat	upx
behavioral2/memory/3888-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/3888-10-0x0000000010000000-0x0000000010033000-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	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	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.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
668	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3888 wrote to memory of 112	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	83
PID 3888 wrote to memory of 112	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	83
PID 3888 wrote to memory of 112	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	83
PID 3888 wrote to memory of 3100	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	85
PID 3888 wrote to memory of 3100	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	85
PID 3888 wrote to memory of 3100	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	85
PID 3888 wrote to memory of 4172	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	86
PID 3888 wrote to memory of 4172	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	86
PID 3888 wrote to memory of 4172	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	86
PID 3888 wrote to memory of 212	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	87
PID 3888 wrote to memory of 212	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	87
PID 3888 wrote to memory of 212	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	87
PID 3888 wrote to memory of 1116	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	88
PID 3888 wrote to memory of 1116	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	88
PID 3888 wrote to memory of 1116	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	88
PID 3888 wrote to memory of 2544	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	89
PID 3888 wrote to memory of 2544	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	89
PID 3888 wrote to memory of 2544	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	89
PID 3888 wrote to memory of 3904	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	90
PID 3888 wrote to memory of 3904	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	90
PID 3888 wrote to memory of 3904	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	90
PID 3888 wrote to memory of 2808	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	91
PID 3888 wrote to memory of 2808	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	91
PID 3888 wrote to memory of 2808	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	91
PID 3888 wrote to memory of 4620	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	92
PID 3888 wrote to memory of 4620	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	92
PID 3888 wrote to memory of 4620	3888	2b486f2af4963c1628b2526500d09bafde4422ab0ac66b3e73f06746763af9fb.exe	92

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:3888
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:112
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 10-3f-de-06-b1-fc
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3100
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 df-2f-4e-0f-c5-b1
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4172
- C:\Windows\SysWOW64\arp.exe
  arp -s 37.27.61.184 18-84-e1-a0-7c-40
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:212
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 e5-fd-84-e9-60-d5
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:1116
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 33-0c-43-81-b7-a3
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2544
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 f3-8f-36-e9-28-2c
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3904
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 86-86-c5-a4-35-ef
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2808
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 1b-6f-5d-cc-db-b1
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4620

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

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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/3888-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3888-7-0x0000000000C71000-0x0000000000C72000-memory.dmp

Filesize
4KB

Download
memory/3888-10-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3888-8-0x0000000000C70000-0x000000000169D000-memory.dmp

Filesize
10.2MB

Download