floxif | 28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220f

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-12-2024 09:22

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General

Target

28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220fN.exe
Size

815KB
MD5

6f338b0d8b648b27f0e24cd039443710
SHA1

b4fae72c22350e439e3dbd17614c37a6ecfcdbda
SHA256

28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220f
SHA512

b034720321e33c0c930c0aa60cfede911b493fea3ad6ae19b8fb086254abfb72c2493b1616cc309a7ee02876d75457c0df90996fe030287d5b750ee614007b78
SSDEEP

24576:miOWmE9/SsSCpyaUk3qPb7hxavnMRGJ/qofTW:Bz9/SNCdUkELQB1qz

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/0x000c000000023b32-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b32-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4540	28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220fN.exe

Network Service Discovery 1 TTPs 1 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2940	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b32-1.dat	upx
behavioral2/memory/4540-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/4540-7-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220fN.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220fN.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4540	28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220fN.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 2940	4540	28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220fN.exe	83
PID 4540 wrote to memory of 2940	4540	28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220fN.exe	83
PID 4540 wrote to memory of 2940	4540	28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220fN.exe	83

C:\Users\Admin\AppData\Local\Temp\28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220fN.exe
"C:\Users\Admin\AppData\Local\Temp\28edce104675407012f7cb2d1808cf4479e286629a387eecbfc38ad35fc3220fN.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4540
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

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
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/4540-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/4540-7-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download