floxif | 091c80ee443773dc30e935fbc7e09582864cf8135d275507ee5152b426439b34

Analysis

max time kernel
105s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-12-2024 09:07

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General

Target

091c80ee443773dc30e935fbc7e09582864cf8135d275507ee5152b426439b34N.dll
Size

150KB
MD5

49796864dfb7dc29049c7c4d24b42830
SHA1

1470e372e454454414b95d87b1458fd18d65bd14
SHA256

091c80ee443773dc30e935fbc7e09582864cf8135d275507ee5152b426439b34
SHA512

fbb647b8458c517d69c6fa18db4fc15b71c80436a88ac56ed5d70ff1d1596c53b51576adcb724035c077c78f2d996e24579db93b8b88c0b6017fb1f70b00b2e7
SSDEEP

3072:KHHZMRTuLcOi65ecbCKnN22lQBV+UdE+rECWp7hK5H:t2jzecbC7BV+UdvrEFp7hKV

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/0x000c000000012260-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000c000000012260-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2336	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c000000012260-1.dat	upx
behavioral1/memory/2336-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2336-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.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	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2336	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2336	2128	rundll32.exe	31
PID 2128 wrote to memory of 2336	2128	rundll32.exe	31
PID 2128 wrote to memory of 2336	2128	rundll32.exe	31
PID 2128 wrote to memory of 2336	2128	rundll32.exe	31
PID 2128 wrote to memory of 2336	2128	rundll32.exe	31
PID 2128 wrote to memory of 2336	2128	rundll32.exe	31
PID 2128 wrote to memory of 2336	2128	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\091c80ee443773dc30e935fbc7e09582864cf8135d275507ee5152b426439b34N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\091c80ee443773dc30e935fbc7e09582864cf8135d275507ee5152b426439b34N.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2336

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/2336-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2336-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download