floxif | 442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca

Analysis

max time kernel
149s
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
29-12-2024 22:04

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General

Target

442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca.exe
Size

452KB
MD5

5e8bb2cdcbf125115a831589e6b06301
SHA1

5a659b67138a10e2d903898a14453aa63071f3ce
SHA256

442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca
SHA512

6130a53627a6c8866b00d0b384fc529ed38c550e9b5e1b955db70b2d23e844ff34eeeecf9c1102ada7f1d0d395126446abaaac2831c7eca7e62895e681145c20
SSDEEP

6144:49dGsVge1ZPmxRTyLxXoQmkjjdElSbrH0ssQvMRlkM4RD/qzMfU0vA:TsVbPcRTydXoQvflUiMRGM4h/qofM

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/0x000d000000023ba1-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000d000000023ba1-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4680	442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca.exe

Network Service Discovery 1 TTPs 1 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2472	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4680-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/files/0x000d000000023ba1-1.dat	upx
behavioral2/memory/4680-9-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4680	442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4680 wrote to memory of 2472	4680	442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca.exe	83
PID 4680 wrote to memory of 2472	4680	442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca.exe	83
PID 4680 wrote to memory of 2472	4680	442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca.exe	83

C:\Users\Admin\AppData\Local\Temp\442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca.exe
"C:\Users\Admin\AppData\Local\Temp\442470ba9627e80719d8e29ea4ef2342e4b412c5fd2a3be56940071693d5deca.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4680
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2472

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/4680-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4680-6-0x00000000000F1000-0x00000000000F2000-memory.dmp

Filesize
4KB

Download
memory/4680-7-0x00000000000F0000-0x0000000000155000-memory.dmp

Filesize
404KB

Download
memory/4680-9-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download