floxif | 40dfeab1ef80f94a4d5494a837904ecfbdaa19053d3a6a8dabb2ea1345cf0462

Analysis

max time kernel
94s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-01-2025 23:13

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General

Target

40dfeab1ef80f94a4d5494a837904ecfbdaa19053d3a6a8dabb2ea1345cf0462.exe
Size

272KB
MD5

05a125db7da5bf40f0dcded4c8184f6e
SHA1

c87bee0861168ac71fe9a7ca298ea61f1c2a4110
SHA256

40dfeab1ef80f94a4d5494a837904ecfbdaa19053d3a6a8dabb2ea1345cf0462
SHA512

b6a0107fe9dbe7296968abe365272091c9fa8594dfce1edcbe656f324a6b2c3b12aee22b5b0b9155dfa57b12402ba588117b3aaaf20f10deea3a41b2ccf29c8c
SSDEEP

6144:D/EUXmEc8tZFGxuNhIB7UA9hQGQ2fy1BV+UdvrEFp7hKTt1Dp:D/E7oHXNhIB7H9hQGQ2K1BjvrEH7onp

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/0x000c000000023b01-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b01-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
840	40dfeab1ef80f94a4d5494a837904ecfbdaa19053d3a6a8dabb2ea1345cf0462.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b01-1.dat	upx
behavioral2/memory/840-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/840-8-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	40dfeab1ef80f94a4d5494a837904ecfbdaa19053d3a6a8dabb2ea1345cf0462.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3056	840	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	40dfeab1ef80f94a4d5494a837904ecfbdaa19053d3a6a8dabb2ea1345cf0462.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	840	40dfeab1ef80f94a4d5494a837904ecfbdaa19053d3a6a8dabb2ea1345cf0462.exe

C:\Users\Admin\AppData\Local\Temp\40dfeab1ef80f94a4d5494a837904ecfbdaa19053d3a6a8dabb2ea1345cf0462.exe
"C:\Users\Admin\AppData\Local\Temp\40dfeab1ef80f94a4d5494a837904ecfbdaa19053d3a6a8dabb2ea1345cf0462.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 548
  2⤵
  - Program crash
  PID:3056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 840 -ip 840
1⤵
PID:4436

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/840-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/840-8-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/840-6-0x0000000000FD0000-0x000000000119B000-memory.dmp

Filesize
1.8MB

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