floxif | 6c685d8ca00bb75041f95dc20cae8ed88cd6f054b2524d3a1d2c553bfd19af5a

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 23:16

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General

Target

6c685d8ca00bb75041f95dc20cae8ed88cd6f054b2524d3a1d2c553bfd19af5a.dll
Size

487KB
MD5

55fefb5dcdb90cdd25c082c3e0359b8f
SHA1

60a324bbc7118055342a9b879b5d3db07d663099
SHA256

6c685d8ca00bb75041f95dc20cae8ed88cd6f054b2524d3a1d2c553bfd19af5a
SHA512

f03a131b09d9f012181c23136092465045e059aaf8edea376eca18dd242344fac9525c051470af3657389cbf7904697273b924099199e68589ac47f874c9e57f
SSDEEP

12288:ENb8zxr2lPaHX7dyP57rhUgiW6QR7t5qv3Ooc8UHkC2ejGVBjvrEH7+yk:ENb8FCaHX7dyP5Kv3Ooc8UHkC2eKbrEQ

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/0x000c000000023b29-1.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/0x000c000000023b29-1.dat	acprotect

Loads dropped DLL 3 IoCs

pid	Process
3208	rundll32.exe
3368	WerFault.exe
2524	WerFault.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b29-1.dat	upx
behavioral2/memory/3208-2-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3208-10-0x0000000010000000-0x0000000010030000-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
2524	3208	WerFault.exe	83

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	3208	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3076 wrote to memory of 3208	3076	rundll32.exe	83
PID 3076 wrote to memory of 3208	3076	rundll32.exe	83
PID 3076 wrote to memory of 3208	3076	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6c685d8ca00bb75041f95dc20cae8ed88cd6f054b2524d3a1d2c553bfd19af5a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6c685d8ca00bb75041f95dc20cae8ed88cd6f054b2524d3a1d2c553bfd19af5a.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3208
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3208 -s 704
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3208 -ip 3208
1⤵
- Loads dropped DLL
PID:3368

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/3208-2-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3208-10-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3208-8-0x00000000752A0000-0x0000000075309000-memory.dmp

Filesize
420KB

Download