floxif | a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44

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
16-12-2024 15:28

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General

Target

a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.exe
Size

440KB
MD5

a8d2854cdb643fd0003e5b14eb69a591
SHA1

504d3d817bead7636fa61cda9f322399a54a72e8
SHA256

a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44
SHA512

7fd1b4f5caf6a33985115150a8368bc434eb555bec6d2eacf4e3541e64b4a15932e68d554fdafaa3e4b020dec9a255ca1493a3935ecac5311a69f9b8cae64bde
SSDEEP

12288:2/J+CtaxnjZpAbxdxDcWcnR4bfXfwiSeiw8xHgbYpj+W8NO0qwxeWfF02/S0lqJ/:+el3+c0DvfeUYqcZQCGm4YprEH7e

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/0x000c000000023b3e-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b3e-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3968	a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b3e-1.dat	upx
behavioral2/memory/3968-2-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3968-18-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	\??\c:\program files\common files\system\symsrv.dll.000	a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.exe
File created	C:\Program Files\Common Files\System\symsrv.dll	a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.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	a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3968	a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.exe
3968	a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3968	a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.exe

C:\Users\Admin\AppData\Local\Temp\a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.exe
"C:\Users\Admin\AppData\Local\Temp\a5e943457db919d56f01f73c5ce1a3a3461538d2f43b85f224cf9526b7860f44.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

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/3968-2-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3968-5-0x00000000002F1000-0x00000000002F2000-memory.dmp

Filesize
4KB

Download
memory/3968-18-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3968-17-0x00000000002F0000-0x0000000000357000-memory.dmp

Filesize
412KB

Download