floxif | c5c514337c9304ef363376f9e37d4cc6efc5810e2ed7345f31f2c7dd7a534e02

General

Target

2024-08-09_a95c16eda92f161466bdbdb3075b66ca_floxif_mafia.exe
Size

2.5MB
MD5

a95c16eda92f161466bdbdb3075b66ca
SHA1

526323892fd79d2e0ac8281d7a5f4ba59eb2b8cc
SHA256

c5c514337c9304ef363376f9e37d4cc6efc5810e2ed7345f31f2c7dd7a534e02
SHA512

7d1f8470168f3e61fe13c1a5b508ee58a991f0432a0094ec831693488d10d0ff0de2814c4baf83af654ec6ff0e5bd54f6cb836e5b614b7f7b390ccbbb915c60f
SSDEEP

24576:2BdtrAUrEOHgu8eCzfWTXytNDywpBgyOePQbEEn9PVofs2hfnjsUo4rzazlHCjkj:tuIJ0ofs2hPd2l177BTK2VbDsar1YDjY

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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
behavioral2/files/0x00080000000234b9-1.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/0x00080000000234b9-1.dat	acprotect

Loads dropped DLL 7 IoCs

pid	Process
4188	2024-08-09_a95c16eda92f161466bdbdb3075b66ca_floxif_mafia.exe
3836	WerFault.exe
1624	WerFault.exe
5048	WerFault.exe
400	WerFault.exe
5032	WerFault.exe
4032	WerFault.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x00080000000234b9-1.dat	upx
behavioral2/memory/4188-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4188-19-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	2024-08-09_a95c16eda92f161466bdbdb3075b66ca_floxif_mafia.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-08-09_a95c16eda92f161466bdbdb3075b66ca_floxif_mafia.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
5048	4188	WerFault.exe	83
400	4188	WerFault.exe	83
4032	4188	WerFault.exe	83

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	2024-08-09_a95c16eda92f161466bdbdb3075b66ca_floxif_mafia.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4188	2024-08-09_a95c16eda92f161466bdbdb3075b66ca_floxif_mafia.exe
4188	2024-08-09_a95c16eda92f161466bdbdb3075b66ca_floxif_mafia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4188	2024-08-09_a95c16eda92f161466bdbdb3075b66ca_floxif_mafia.exe

C:\Users\Admin\AppData\Local\Temp\2024-08-09_a95c16eda92f161466bdbdb3075b66ca_floxif_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-09_a95c16eda92f161466bdbdb3075b66ca_floxif_mafia.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4188 -s 920
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:5048
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4188 -s 832
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4188 -s 972
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:4032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4188 -ip 4188
1⤵
- Loads dropped DLL
PID:3836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4188 -ip 4188
1⤵
- Loads dropped DLL
PID:1624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4188 -ip 4188
1⤵
- Loads dropped DLL
PID:5032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Privilege Escalation

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/4188-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4188-6-0x0000000000D71000-0x0000000000D72000-memory.dmp

Filesize
4KB

Download
memory/4188-19-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4188-17-0x0000000000D70000-0x0000000000FDA000-memory.dmp

Filesize
2.4MB

Download

Analysis

Sharing