floxif | a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-11-2024 09:02

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General

Target

a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe
Size

277KB
MD5

1f7c830f71f1620deddd742432820284
SHA1

712085900ddc498286a60f7a8c4f7740b00c6901
SHA256

a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b
SHA512

e54cd14362c90160bf46cd2a6892b69f99ccdc7ae31b6198351aad3f902b97f9188505f8bceb4f3a3210e4fec9b226f84f1c97dfc0702ec6ebfdb7fd74a9464f
SSDEEP

6144:RkAol/DRfkTC3dMnB++CuBV+UdvrEFp7hKDN:RkAolbRfky+B++CuBjvrEH7UN

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

Processes:

resource	yara_rule
\Program Files\Common Files\System\symsrv.dll	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
\Program Files\Common Files\System\symsrv.dll	acprotect

Loads dropped DLL 1 IoCs

Processes:

a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe

pid process

1852 a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe

pid	process
1852	a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1852-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
\Program Files\Common Files\System\symsrv.dll	upx
behavioral1/memory/1852-6-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

Processes:

a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe

description ioc process

File created C:\Program Files\Common Files\System\symsrv.dll a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe

description	ioc	process
File created	C:\Program Files\Common Files\System\symsrv.dll	a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.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

Processes:

a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe

description pid process

Token: SeDebugPrivilege 1852 a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe

description	pid	process
Token: SeDebugPrivilege	1852	a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe

C:\Users\Admin\AppData\Local\Temp\a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe
"C:\Users\Admin\AppData\Local\Temp\a3823bf42576d7c20bc4c2e792aa277082f114dde59bdbb7014eefce268c892b.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/1852-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1852-6-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1852-5-0x0000000000140000-0x0000000000174000-memory.dmp

Filesize
208KB

Download