floxif | b8b89a9109b7976f75be43bc48babbcfc4b67bb4abcfa5bca9c0fce409c763cf

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-12-2024 20:49

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General

Target

b8b89a9109b7976f75be43bc48babbcfc4b67bb4abcfa5bca9c0fce409c763cf.exe
Size

286KB
MD5

fa8805bfb9c5cc381ba7de969e9e0d1b
SHA1

9f6d25992fff732c7f86d4e624319f0fc5333de2
SHA256

b8b89a9109b7976f75be43bc48babbcfc4b67bb4abcfa5bca9c0fce409c763cf
SHA512

6a340a03e2e4e4b4015d3dbec7e704d529dcab46972309eb21fc2329dac71aa87fd8d40cfcd2b8373f265e81a7595e5569ddaa9f83c23683ff93c8c158be2d79
SSDEEP

6144:x7gKNkhSR/BvuyXnZhB+h8WHxBV+UdvrEFp7hKe:x7gKNkhm/BvuyXnPB+h8WHxBjvrEH7R

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/0x000c000000023b14-1.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/0x000c000000023b14-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2840	b8b89a9109b7976f75be43bc48babbcfc4b67bb4abcfa5bca9c0fce409c763cf.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b14-1.dat	upx
behavioral2/memory/2840-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2840-6-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	b8b89a9109b7976f75be43bc48babbcfc4b67bb4abcfa5bca9c0fce409c763cf.exe

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	b8b89a9109b7976f75be43bc48babbcfc4b67bb4abcfa5bca9c0fce409c763cf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2840	b8b89a9109b7976f75be43bc48babbcfc4b67bb4abcfa5bca9c0fce409c763cf.exe

C:\Users\Admin\AppData\Local\Temp\b8b89a9109b7976f75be43bc48babbcfc4b67bb4abcfa5bca9c0fce409c763cf.exe
"C:\Users\Admin\AppData\Local\Temp\b8b89a9109b7976f75be43bc48babbcfc4b67bb4abcfa5bca9c0fce409c763cf.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2840

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

Replay Monitor

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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/2840-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2840-6-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2840-5-0x0000000000D70000-0x0000000000DA7000-memory.dmp

Filesize
220KB

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