floxif | c2b51580a2a4aa055195c8e4629fbdc28674923ca834079866f0f7b41be61243

Analysis

max time kernel
95s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 19:33

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General

Target

2024-12-17_52aa6bc40b23d02306865b74c79dba85_floxif_mafia.exe
Size

1.8MB
MD5

52aa6bc40b23d02306865b74c79dba85
SHA1

ccf60156a6495916d08089b2b5bd3b4b062afd98
SHA256

c2b51580a2a4aa055195c8e4629fbdc28674923ca834079866f0f7b41be61243
SHA512

4deedfdc07233c9819e311d2a5af0364646c7957b0ef4d803ae73f5542d37f163639b0877a486547edfca514f884e5c88866dd8238d04655f6c618f729a65091
SSDEEP

49152:W5Zp6SIguuBd5+s5yvDwpPtwHvehhFKT8oBaqBeqyZSERu9WP:W5qSfuuev0pPWehhFMBpBeq0l

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/0x000a000000023c44-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000a000000023c44-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3304	2024-12-17_52aa6bc40b23d02306865b74c79dba85_floxif_mafia.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3304-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/files/0x000a000000023c44-1.dat	upx
behavioral2/memory/3304-9-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-12-17_52aa6bc40b23d02306865b74c79dba85_floxif_mafia.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
492	3304	WerFault.exe	82
4560	3304	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	2024-12-17_52aa6bc40b23d02306865b74c79dba85_floxif_mafia.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3304	2024-12-17_52aa6bc40b23d02306865b74c79dba85_floxif_mafia.exe
3304	2024-12-17_52aa6bc40b23d02306865b74c79dba85_floxif_mafia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3304	2024-12-17_52aa6bc40b23d02306865b74c79dba85_floxif_mafia.exe

C:\Users\Admin\AppData\Local\Temp\2024-12-17_52aa6bc40b23d02306865b74c79dba85_floxif_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-17_52aa6bc40b23d02306865b74c79dba85_floxif_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
PID:3304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3304 -s 648
  2⤵
  - Program crash
  PID:492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3304 -s 656
  2⤵
  - Program crash
  PID:4560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3304 -ip 3304
1⤵
PID:4852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3304 -ip 3304
1⤵
PID:3300

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

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/3304-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3304-6-0x0000000000FD1000-0x0000000000FD2000-memory.dmp

Filesize
4KB

Download
memory/3304-9-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3304-7-0x0000000000FD0000-0x000000000118D000-memory.dmp

Filesize
1.7MB

Download