floxif | 19bc4ee25156c5561a9a7028fbbd22d577234f27cf9509225583e9c8d796e803

Analysis

max time kernel
94s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-12-2024 06:44

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General

Target

19bc4ee25156c5561a9a7028fbbd22d577234f27cf9509225583e9c8d796e803.dll
Size

1.6MB
MD5

de338db8aab4b895d995a850bac956d3
SHA1

def4309fcbdb5169c2643f00575b732eab3f4959
SHA256

19bc4ee25156c5561a9a7028fbbd22d577234f27cf9509225583e9c8d796e803
SHA512

1e889a3d7fb3c2447f22e6a41596938051eba5797d67aec2a278a47cc3bc8e9a6c03aafec0ebc9e3ae80171da3108fb91b62c982431a47dafe0046b255c063a7
SSDEEP

24576:EedIJcNVXu2hBHfU+HraM8kOJAoy2eXWDhhOfrRP8HE+yEJfE9iQsnL44Euxo2U+:dJHflOrGqkwJfEHKLZEux3U+

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/0x000b000000023c75-1.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/0x000b000000023c75-1.dat	acprotect

Loads dropped DLL 4 IoCs

pid	Process
3156	rundll32.exe
3156	rundll32.exe
3956	WerFault.exe
2856	WerFault.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000b000000023c75-1.dat	upx
behavioral2/memory/3156-6-0x0000000000BE0000-0x0000000000C10000-memory.dmp	upx
behavioral2/memory/3156-7-0x0000000000BE0000-0x0000000000C10000-memory.dmp	upx
behavioral2/memory/3156-14-0x0000000000BE0000-0x0000000000C10000-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
2856	3156	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 1 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	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3156	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 844 wrote to memory of 3156	844	rundll32.exe	82
PID 844 wrote to memory of 3156	844	rundll32.exe	82
PID 844 wrote to memory of 3156	844	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\19bc4ee25156c5561a9a7028fbbd22d577234f27cf9509225583e9c8d796e803.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:844
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\19bc4ee25156c5561a9a7028fbbd22d577234f27cf9509225583e9c8d796e803.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3156
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3156 -s 728
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3156 -ip 3156
1⤵
- Loads dropped DLL
PID:3956

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

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
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/3156-6-0x0000000000BE0000-0x0000000000C10000-memory.dmp

Filesize
192KB

Download
memory/3156-7-0x0000000000BE0000-0x0000000000C10000-memory.dmp

Filesize
192KB

Download
memory/3156-8-0x0000000010001000-0x0000000010002000-memory.dmp

Filesize
4KB

Download
memory/3156-14-0x0000000000BE0000-0x0000000000C10000-memory.dmp

Filesize
192KB

Download
memory/3156-12-0x0000000010000000-0x0000000010191000-memory.dmp

Filesize
1.6MB

Download