floxif | b2cb0501b4934b17e4e513bde4ca1a641802b8d47609734ecd4f496a13f9721c

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 09:00

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General

Target

b2cb0501b4934b17e4e513bde4ca1a641802b8d47609734ecd4f496a13f9721cN.exe
Size

621KB
MD5

29224e035bfbd393b25e48c8ef6049c0
SHA1

33554727d821f2289b435640a96fd84de9e09d10
SHA256

b2cb0501b4934b17e4e513bde4ca1a641802b8d47609734ecd4f496a13f9721c
SHA512

7b51948e1db7e80c35340c7b96627155d27c066002322aec8117496dd6d49fb397a70e25306d877989d1c585e05274ac5285d00a5702f0c14385676d947b5d55
SSDEEP

12288:8itOFysp2RUw+V049Likn+YrMFeOS8sdi13FN5vQ8devrXBjvrEH7g9:8iGs6HAFVVFddcr1rEH7g9

Score

10^/10

floxif backdoor discovery 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/0x000c000000023bac-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023bac-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1260	b2cb0501b4934b17e4e513bde4ca1a641802b8d47609734ecd4f496a13f9721cN.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023bac-1.dat	upx
behavioral2/memory/1260-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1260-17-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	b2cb0501b4934b17e4e513bde4ca1a641802b8d47609734ecd4f496a13f9721cN.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 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	b2cb0501b4934b17e4e513bde4ca1a641802b8d47609734ecd4f496a13f9721cN.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1260	b2cb0501b4934b17e4e513bde4ca1a641802b8d47609734ecd4f496a13f9721cN.exe

C:\Users\Admin\AppData\Local\Temp\b2cb0501b4934b17e4e513bde4ca1a641802b8d47609734ecd4f496a13f9721cN.exe
"C:\Users\Admin\AppData\Local\Temp\b2cb0501b4934b17e4e513bde4ca1a641802b8d47609734ecd4f496a13f9721cN.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1260

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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/1260-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1260-6-0x00000000005F2000-0x00000000005F3000-memory.dmp

Filesize
4KB

Download
memory/1260-7-0x00000000005F0000-0x000000000067C000-memory.dmp

Filesize
560KB

Download
memory/1260-16-0x00000000005F0000-0x000000000067C000-memory.dmp

Filesize
560KB

Download
memory/1260-17-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download