floxif | 81ed7565422b1c9798c6e8ec973a501cd3ff5e61d83829f07d936f02dc72dfee

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08/08/2024, 12:27

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General

Target

2024-08-08_2834758b089cc91ad716b23539e3fa5b_floxif_hijackloader_mafia.exe
Size

2.7MB
MD5

2834758b089cc91ad716b23539e3fa5b
SHA1

f47ba2c76527e8fc73448e50cb125d1d7ace84b6
SHA256

81ed7565422b1c9798c6e8ec973a501cd3ff5e61d83829f07d936f02dc72dfee
SHA512

4803a93708f006de0c123931a112a00167ad1eddf13c54c30f51190d7bfd8ab49332c5fa8f431079eb857e24f36672b1fc93a0aa5ba2fc5405a514814dc7a70c
SSDEEP

49152:Flks4A6lVLX6Sc60oNUFFIIsTp69FlNN7boUvH6u//zHGwhXPwMQ9i9ZMW/KMZKb:/n6r6+0oUFIIsTY9Fl/7boUi+6wZPwME

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
behavioral2/files/0x0009000000023410-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0009000000023410-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4528	2024-08-08_2834758b089cc91ad716b23539e3fa5b_floxif_hijackloader_mafia.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0009000000023410-1.dat	upx
behavioral2/memory/4528-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4528-10-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2024-08-08_2834758b089cc91ad716b23539e3fa5b_floxif_hijackloader_mafia.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4160	4528	WerFault.exe	82
2800	4528	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	2024-08-08_2834758b089cc91ad716b23539e3fa5b_floxif_hijackloader_mafia.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4528	2024-08-08_2834758b089cc91ad716b23539e3fa5b_floxif_hijackloader_mafia.exe
4528	2024-08-08_2834758b089cc91ad716b23539e3fa5b_floxif_hijackloader_mafia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4528	2024-08-08_2834758b089cc91ad716b23539e3fa5b_floxif_hijackloader_mafia.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4528	2024-08-08_2834758b089cc91ad716b23539e3fa5b_floxif_hijackloader_mafia.exe

C:\Users\Admin\AppData\Local\Temp\2024-08-08_2834758b089cc91ad716b23539e3fa5b_floxif_hijackloader_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-08_2834758b089cc91ad716b23539e3fa5b_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:4528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 820
  2⤵
  - Program crash
  PID:4160
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 828
  2⤵
  - Program crash
  PID:2800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4528 -ip 4528
1⤵
PID:2392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4528 -ip 4528
1⤵
PID:4000

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/4528-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4528-6-0x0000000000CD1000-0x0000000000CD2000-memory.dmp

Filesize
4KB

Download
memory/4528-10-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4528-8-0x0000000000CD0000-0x0000000000F78000-memory.dmp

Filesize
2.7MB

Download