floxif | b92e55799629e876e75a6641f5569a22f079ad5eda3110a6fbc84372d91de7aa

Analysis

max time kernel
94s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 12:26

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General

Target

2024-12-26_5c3826170f56848c652687b008a87b6c_floxif_hijackloader_mafia.exe
Size

2.7MB
MD5

5c3826170f56848c652687b008a87b6c
SHA1

fb5a889a2a7d8457f3b4cd42335bb5a840205589
SHA256

b92e55799629e876e75a6641f5569a22f079ad5eda3110a6fbc84372d91de7aa
SHA512

ec1ceef236cab95ee66f20259b570b944dcfa3db2c7c7a91625ecad86c3ff92fb12c9a7d723b12d8d073ef4d6ca439993104a49df3872d5c9ff88d27918fb139
SSDEEP

49152:2Pf6VdMQTNRbgkshkNw//7vgseqziRS1UsrzoeNFZe45c71y9Bx4M3W/KMZKWKKt:2q1Rfssw//7vgVqziRS1UsrzppD5y1yO

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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/0x0009000000023c59-1.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0009000000023c59-1.dat	acprotect

Loads dropped DLL 5 IoCs

pid	Process
2124	2024-12-26_5c3826170f56848c652687b008a87b6c_floxif_hijackloader_mafia.exe
4976	WerFault.exe
3504	WerFault.exe
2260	WerFault.exe
2796	WerFault.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0009000000023c59-1.dat	upx
behavioral2/memory/2124-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/2124-13-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-26_5c3826170f56848c652687b008a87b6c_floxif_hijackloader_mafia.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3504	2124	WerFault.exe	82
2796	2124	WerFault.exe	82

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	2024-12-26_5c3826170f56848c652687b008a87b6c_floxif_hijackloader_mafia.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2124	2024-12-26_5c3826170f56848c652687b008a87b6c_floxif_hijackloader_mafia.exe
2124	2024-12-26_5c3826170f56848c652687b008a87b6c_floxif_hijackloader_mafia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2124	2024-12-26_5c3826170f56848c652687b008a87b6c_floxif_hijackloader_mafia.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2124	2024-12-26_5c3826170f56848c652687b008a87b6c_floxif_hijackloader_mafia.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-26_5c3826170f56848c652687b008a87b6c_floxif_hijackloader_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-26_5c3826170f56848c652687b008a87b6c_floxif_hijackloader_mafia.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2124 -s 808
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:3504
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2124 -s 812
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:2796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 2124 -ip 2124
1⤵
- Loads dropped DLL
PID:4976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2124 -ip 2124
1⤵
- Loads dropped DLL
PID:2260

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2124-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2124-6-0x0000000000C11000-0x0000000000C12000-memory.dmp

Filesize
4KB

Download
memory/2124-13-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2124-11-0x0000000000C10000-0x0000000000EB8000-memory.dmp

Filesize
2.7MB

Download