floxif | 414b8987e4e6711167138ac82b6de04ef5b3d6f3d4770183a5ffdd7df0688dd9

Analysis

max time kernel
95s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
01-08-2024 21:28

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General

Target

05194f469cdf01bcac9fc8d05306cba0N.exe
Size

138KB
MD5

05194f469cdf01bcac9fc8d05306cba0
SHA1

e8b698c03e529c4054bf37e99815faf01dd50883
SHA256

414b8987e4e6711167138ac82b6de04ef5b3d6f3d4770183a5ffdd7df0688dd9
SHA512

7034dbb3b5fd47009d11fe7081ea837d3650d8040dcb69c465bb28d707991882bcff225a475d5e0d77f5ce35602a27f6ec86a87f05139120d2d74f69ebcd81da
SSDEEP

3072:k3plBITsQvVqRlkM4OAD/KLznBuB2JA2Bjcl3:k3lesQvMRlkM4RD/qzMfU4l3

Score

10^/10

floxif backdoor discovery trojan upx

Malware Config

Signatures

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/0x0009000000023428-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0009000000023428-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3092	05194f469cdf01bcac9fc8d05306cba0N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0009000000023428-1.dat	upx
behavioral2/memory/3092-3-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/3092-10-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
1072	arp.exe
4632	arp.exe
2712	arp.exe
1888	arp.exe
740	arp.exe
3632	arp.exe
4976	arp.exe
2212	arp.exe
1656	arp.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	05194f469cdf01bcac9fc8d05306cba0N.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	05194f469cdf01bcac9fc8d05306cba0N.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
664	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3092	05194f469cdf01bcac9fc8d05306cba0N.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3092 wrote to memory of 2712	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	84
PID 3092 wrote to memory of 2712	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	84
PID 3092 wrote to memory of 2712	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	84
PID 3092 wrote to memory of 1888	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	87
PID 3092 wrote to memory of 1888	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	87
PID 3092 wrote to memory of 1888	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	87
PID 3092 wrote to memory of 1656	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	88
PID 3092 wrote to memory of 1656	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	88
PID 3092 wrote to memory of 1656	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	88
PID 3092 wrote to memory of 2212	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	89
PID 3092 wrote to memory of 2212	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	89
PID 3092 wrote to memory of 2212	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	89
PID 3092 wrote to memory of 4976	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	90
PID 3092 wrote to memory of 4976	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	90
PID 3092 wrote to memory of 4976	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	90
PID 3092 wrote to memory of 4632	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	91
PID 3092 wrote to memory of 4632	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	91
PID 3092 wrote to memory of 4632	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	91
PID 3092 wrote to memory of 3632	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	92
PID 3092 wrote to memory of 3632	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	92
PID 3092 wrote to memory of 3632	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	92
PID 3092 wrote to memory of 1072	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	93
PID 3092 wrote to memory of 1072	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	93
PID 3092 wrote to memory of 1072	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	93
PID 3092 wrote to memory of 740	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	94
PID 3092 wrote to memory of 740	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	94
PID 3092 wrote to memory of 740	3092	05194f469cdf01bcac9fc8d05306cba0N.exe	94

C:\Users\Admin\AppData\Local\Temp\05194f469cdf01bcac9fc8d05306cba0N.exe
"C:\Users\Admin\AppData\Local\Temp\05194f469cdf01bcac9fc8d05306cba0N.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:3092
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2712
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 ce-78-cc-4a-84-43
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:1888
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 44-25-d6-1e-9c-ed
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:1656
- C:\Windows\SysWOW64\arp.exe
  arp -s 136.243.69.123 7d-09-c2-39-33-73
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2212
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 06-c8-69-bf-fd-77
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4976
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 47-ea-9d-87-35-f0
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4632
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 be-a3-11-a2-f7-93
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3632
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 f4-52-5a-da-37-a6
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:1072
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 a6-9f-ba-47-6f-9c
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:740

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 Information Discovery

T1082

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/3092-2-0x0000000000401000-0x0000000000402000-memory.dmp

Filesize
4KB

Download
memory/3092-3-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3092-7-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/3092-11-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/3092-10-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download