floxif | d23bfbaa9ccbaca4a561452bebae0acf6ffc3182702ecf621c90a432008887a7

Analysis

max time kernel
121s
max time network
127s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16-12-2024 07:14

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General

Target

d23bfbaa9ccbaca4a561452bebae0acf6ffc3182702ecf621c90a432008887a7.dll
Size

442KB
MD5

ddab391ec970863f241aec3ab2b4d33f
SHA1

d5149262d4fe6115745f2fd1bb2fd54b4606d69c
SHA256

d23bfbaa9ccbaca4a561452bebae0acf6ffc3182702ecf621c90a432008887a7
SHA512

849271768c829c707973240cc5a5d5631488dfd3717d631e3c59a4e81ae418a938d4cfe74b6aa4aa8d8cc216a8bfe1431c019127673cf73121da653e5a644f97
SSDEEP

12288:w0WDYorWU+rxssY08t1MUvMRGM4h/qofpGt:dviT8fs13vMRGJ/qofs

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
behavioral1/files/0x0008000000012117-1.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
behavioral1/files/0x0008000000012117-1.dat	acprotect

Loads dropped DLL 11 IoCs

pid	Process
2672	rundll32.exe
2836	WerFault.exe
2812	arp.exe
2824	arp.exe
2616	arp.exe
2888	arp.exe
2864	arp.exe
2620	arp.exe
2716	arp.exe
2576	arp.exe
2680	arp.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2824	arp.exe
2716	arp.exe
2576	arp.exe
2864	arp.exe
2620	arp.exe
2680	arp.exe
2812	arp.exe
2888	arp.exe
2616	arp.exe

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0008000000012117-1.dat	upx
behavioral1/memory/2672-3-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2812-8-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2812-10-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2672-13-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2824-15-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2888-18-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2620-29-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2680-28-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2576-27-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2716-26-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2864-25-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2616-19-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2888-37-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2864-43-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2680-45-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2576-41-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2620-39-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2716-35-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2824-34-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2616-33-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2836	2672	WerFault.exe	30

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	rundll32.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 use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	2672	rundll32.exe
Token: SeDebugPrivilege	2812	arp.exe
Token: SeDebugPrivilege	2824	arp.exe
Token: SeDebugPrivilege	2616	arp.exe
Token: SeDebugPrivilege	2864	arp.exe
Token: SeDebugPrivilege	2716	arp.exe
Token: SeDebugPrivilege	2620	arp.exe
Token: SeDebugPrivilege	2576	arp.exe
Token: SeDebugPrivilege	2888	arp.exe
Token: SeDebugPrivilege	2680	arp.exe

Suspicious use of WriteProcessMemory 47 IoCs

description	pid	Process	procid_target
PID 2892 wrote to memory of 2672	2892	rundll32.exe	30
PID 2892 wrote to memory of 2672	2892	rundll32.exe	30
PID 2892 wrote to memory of 2672	2892	rundll32.exe	30
PID 2892 wrote to memory of 2672	2892	rundll32.exe	30
PID 2892 wrote to memory of 2672	2892	rundll32.exe	30
PID 2892 wrote to memory of 2672	2892	rundll32.exe	30
PID 2892 wrote to memory of 2672	2892	rundll32.exe	30
PID 2672 wrote to memory of 2836	2672	rundll32.exe	31
PID 2672 wrote to memory of 2836	2672	rundll32.exe	31
PID 2672 wrote to memory of 2836	2672	rundll32.exe	31
PID 2672 wrote to memory of 2836	2672	rundll32.exe	31
PID 2672 wrote to memory of 2812	2672	rundll32.exe	32
PID 2672 wrote to memory of 2812	2672	rundll32.exe	32
PID 2672 wrote to memory of 2812	2672	rundll32.exe	32
PID 2672 wrote to memory of 2812	2672	rundll32.exe	32
PID 2672 wrote to memory of 2888	2672	rundll32.exe	34
PID 2672 wrote to memory of 2888	2672	rundll32.exe	34
PID 2672 wrote to memory of 2888	2672	rundll32.exe	34
PID 2672 wrote to memory of 2888	2672	rundll32.exe	34
PID 2672 wrote to memory of 2680	2672	rundll32.exe	35
PID 2672 wrote to memory of 2680	2672	rundll32.exe	35
PID 2672 wrote to memory of 2680	2672	rundll32.exe	35
PID 2672 wrote to memory of 2680	2672	rundll32.exe	35
PID 2672 wrote to memory of 2616	2672	rundll32.exe	36
PID 2672 wrote to memory of 2616	2672	rundll32.exe	36
PID 2672 wrote to memory of 2616	2672	rundll32.exe	36
PID 2672 wrote to memory of 2616	2672	rundll32.exe	36
PID 2672 wrote to memory of 2716	2672	rundll32.exe	37
PID 2672 wrote to memory of 2716	2672	rundll32.exe	37
PID 2672 wrote to memory of 2716	2672	rundll32.exe	37
PID 2672 wrote to memory of 2716	2672	rundll32.exe	37
PID 2672 wrote to memory of 2824	2672	rundll32.exe	38
PID 2672 wrote to memory of 2824	2672	rundll32.exe	38
PID 2672 wrote to memory of 2824	2672	rundll32.exe	38
PID 2672 wrote to memory of 2824	2672	rundll32.exe	38
PID 2672 wrote to memory of 2620	2672	rundll32.exe	40
PID 2672 wrote to memory of 2620	2672	rundll32.exe	40
PID 2672 wrote to memory of 2620	2672	rundll32.exe	40
PID 2672 wrote to memory of 2620	2672	rundll32.exe	40
PID 2672 wrote to memory of 2864	2672	rundll32.exe	41
PID 2672 wrote to memory of 2864	2672	rundll32.exe	41
PID 2672 wrote to memory of 2864	2672	rundll32.exe	41
PID 2672 wrote to memory of 2864	2672	rundll32.exe	41
PID 2672 wrote to memory of 2576	2672	rundll32.exe	42
PID 2672 wrote to memory of 2576	2672	rundll32.exe	42
PID 2672 wrote to memory of 2576	2672	rundll32.exe	42
PID 2672 wrote to memory of 2576	2672	rundll32.exe	42

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d23bfbaa9ccbaca4a561452bebae0acf6ffc3182702ecf621c90a432008887a7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2892
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d23bfbaa9ccbaca4a561452bebae0acf6ffc3182702ecf621c90a432008887a7.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2672 -s 372
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2836
- - C:\Windows\SysWOW64\arp.exe
    arp -a
    3⤵
    - Loads dropped DLL
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2812
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.0.1 0f-ee-48-75-2b-92
    3⤵
    - Loads dropped DLL
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2888
- - C:\Windows\SysWOW64\arp.exe
    arp -s 10.127.255.255 0d-85-c3-1c-71-22
    3⤵
    - Loads dropped DLL
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2680
- - C:\Windows\SysWOW64\arp.exe
    arp -s 136.243.76.170 36-d5-4d-fb-ad-41
    3⤵
    - Loads dropped DLL
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2616
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.22 3e-64-cd-f6-82-db
    3⤵
    - Loads dropped DLL
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2716
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.251 e4-64-b6-f3-2e-02
    3⤵
    - Loads dropped DLL
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2824
- - C:\Windows\SysWOW64\arp.exe
    arp -s 224.0.0.252 0a-2d-0c-ae-6b-79
    3⤵
    - Loads dropped DLL
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2620
- - C:\Windows\SysWOW64\arp.exe
    arp -s 239.255.255.250 65-28-90-7e-5d-e9
    3⤵
    - Loads dropped DLL
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2864
- - C:\Windows\SysWOW64\arp.exe
    arp -s 255.255.255.255 7b-57-15-64-b1-4c
    3⤵
    - Loads dropped DLL
    - Network Service Discovery
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2576

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

\Program Files\Common Files\System\symsrv.dll

Filesize
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/2576-41-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2576-27-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2616-33-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2616-19-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2620-29-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2620-39-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2672-11-0x0000000074E10000-0x0000000074E6B000-memory.dmp

Filesize
364KB

Download
memory/2672-3-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2672-13-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2680-45-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2680-28-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2716-26-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2716-35-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2812-10-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2812-8-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2824-34-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2824-15-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2864-43-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2864-25-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2888-37-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2888-18-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download