floxif | 5e70ba62b780be8d88a7ffee9d88264389ce3bf40bae005cc017bd55b880fc82

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 06:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

5e70ba62b780be8d88a7ffee9d88264389ce3bf40bae005cc017bd55b880fc82.dll
Size

198KB
MD5

1e19e729a7c074658c88695fb6bb453e
SHA1

2d63d659a1fa87e8d91e3041fed9300889a3bc6a
SHA256

5e70ba62b780be8d88a7ffee9d88264389ce3bf40bae005cc017bd55b880fc82
SHA512

bf1ef6af702a2f96d78749e41d3d3255a36f3bd8ddd6cc1268140032c007ac89540cd8a016facd6b7a113bc402ca44334f9cfc9828b74b71001cc848a07d0ee5
SSDEEP

6144:WbMDX3blaUf+ox+oK3qBV+UdvrEFp7hKQ:WbIbh+ohK6BjvrEH7T

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
behavioral1/files/0x00070000000120fe-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00070000000120fe-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2120	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00070000000120fe-1.dat	upx
behavioral1/memory/2120-3-0x0000000000140000-0x0000000000170000-memory.dmp	upx
behavioral1/memory/2120-7-0x0000000000140000-0x0000000000170000-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
2388	2120	WerFault.exe	30

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 6 IoCs

description	pid	Process
Token: SeSecurityPrivilege	2120	rundll32.exe
Token: 35	2120	rundll32.exe
Token: SeLoadDriverPrivilege	2120	rundll32.exe
Token: SeBackupPrivilege	2120	rundll32.exe
Token: SeRestorePrivilege	2120	rundll32.exe
Token: SeDebugPrivilege	2120	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1568 wrote to memory of 2120	1568	rundll32.exe	30
PID 1568 wrote to memory of 2120	1568	rundll32.exe	30
PID 1568 wrote to memory of 2120	1568	rundll32.exe	30
PID 1568 wrote to memory of 2120	1568	rundll32.exe	30
PID 1568 wrote to memory of 2120	1568	rundll32.exe	30
PID 1568 wrote to memory of 2120	1568	rundll32.exe	30
PID 1568 wrote to memory of 2120	1568	rundll32.exe	30
PID 2120 wrote to memory of 2388	2120	rundll32.exe	31
PID 2120 wrote to memory of 2388	2120	rundll32.exe	31
PID 2120 wrote to memory of 2388	2120	rundll32.exe	31
PID 2120 wrote to memory of 2388	2120	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5e70ba62b780be8d88a7ffee9d88264389ce3bf40bae005cc017bd55b880fc82.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\5e70ba62b780be8d88a7ffee9d88264389ce3bf40bae005cc017bd55b880fc82.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2120
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2120 -s 336
    3⤵
    - Program crash
    PID:2388

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

Loading Replay Monitor...

Downloads

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2120-3-0x0000000000140000-0x0000000000170000-memory.dmp

Filesize
192KB

Download
memory/2120-5-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download
memory/2120-7-0x0000000000140000-0x0000000000170000-memory.dmp

Filesize
192KB

Download