floxif | 0169a59550f537d6761fb23c1793c02f1fe1b4170eec7526ce548e1d259f0ad9

Analysis

max time kernel
110s
max time network
16s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
30/09/2024, 14:02

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General

Target

0169a59550f537d6761fb23c1793c02f1fe1b4170eec7526ce548e1d259f0ad9N.dll
Size

356KB
MD5

f3a7e373ac23f1232843f803361008d0
SHA1

42051969eff31298a5dc9a11268f9fc633c9016d
SHA256

0169a59550f537d6761fb23c1793c02f1fe1b4170eec7526ce548e1d259f0ad9
SHA512

9d012de1ccad11858662c2b4d2c967617846fe9a544344bffac6d364e48dac1b036375f9b047a819097cfc7bf1f5a050e5d16826d04330d9d2b411e281334080
SSDEEP

6144:t/Jh9n1jvELB4mCWnF0BV+UdvrEFp7hKf:nh9n17LKF0BjvrEH7Q

Score

10^/10

floxif backdoor discovery trojan upx

Malware Config

Signatures

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/0x00080000000120fd-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00080000000120fd-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2956	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00080000000120fd-1.dat	upx
behavioral1/memory/2956-3-0x00000000001E0000-0x0000000000210000-memory.dmp	upx
behavioral1/memory/2956-7-0x00000000001E0000-0x0000000000210000-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
2064	2956	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 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2956	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 2956	2508	rundll32.exe	30
PID 2508 wrote to memory of 2956	2508	rundll32.exe	30
PID 2508 wrote to memory of 2956	2508	rundll32.exe	30
PID 2508 wrote to memory of 2956	2508	rundll32.exe	30
PID 2508 wrote to memory of 2956	2508	rundll32.exe	30
PID 2508 wrote to memory of 2956	2508	rundll32.exe	30
PID 2508 wrote to memory of 2956	2508	rundll32.exe	30
PID 2956 wrote to memory of 2064	2956	rundll32.exe	31
PID 2956 wrote to memory of 2064	2956	rundll32.exe	31
PID 2956 wrote to memory of 2064	2956	rundll32.exe	31
PID 2956 wrote to memory of 2064	2956	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0169a59550f537d6761fb23c1793c02f1fe1b4170eec7526ce548e1d259f0ad9N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2508
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0169a59550f537d6761fb23c1793c02f1fe1b4170eec7526ce548e1d259f0ad9N.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:2956
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2956 -s 312
    3⤵
    - Program crash
    PID:2064

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/2956-3-0x00000000001E0000-0x0000000000210000-memory.dmp

Filesize
192KB

Download
memory/2956-5-0x0000000010000000-0x0000000010046000-memory.dmp

Filesize
280KB

Download
memory/2956-7-0x00000000001E0000-0x0000000000210000-memory.dmp

Filesize
192KB

Download