floxif | f76c798d205ae8b0921a69318c4ca20444a3f946e2ca067f60e30577bacc34c3

Analysis

max time kernel
149s
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
24-01-2025 11:09

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General

Target

f76c798d205ae8b0921a69318c4ca20444a3f946e2ca067f60e30577bacc34c3.dll
Size

969KB
MD5

a0d54d7df397a35a27a30d5d5f87c33a
SHA1

4ecffc30a2f58743f6a7de41c66930a4d8f24917
SHA256

f76c798d205ae8b0921a69318c4ca20444a3f946e2ca067f60e30577bacc34c3
SHA512

e6d2797d8771fd62bcb49625a17883134e7eb8407fc6f02ed3fd6dc9107ab505fc6147984e55d34dbb16d676e7637b0a861ecb8bcca5a36be528cfb2721c2d58
SSDEEP

24576:aW+wsDaKw6DDz3qRyPnmGfrnvVUKueYeRmneWtJmrEH7H:aas66DwOBfrnvV72eWtr

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/0x000b000000023b99-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000b000000023b99-1.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
1296	rundll32.exe
1296	rundll32.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000b000000023b99-1.dat	upx
behavioral2/memory/1296-5-0x0000000001610000-0x0000000001640000-memory.dmp	upx
behavioral2/memory/1296-4-0x0000000001610000-0x0000000001640000-memory.dmp	upx
behavioral2/memory/1296-11-0x0000000001610000-0x0000000001640000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.exe

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	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1296	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 1296	4616	rundll32.exe	82
PID 4616 wrote to memory of 1296	4616	rundll32.exe	82
PID 4616 wrote to memory of 1296	4616	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f76c798d205ae8b0921a69318c4ca20444a3f946e2ca067f60e30577bacc34c3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f76c798d205ae8b0921a69318c4ca20444a3f946e2ca067f60e30577bacc34c3.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1296

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

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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/1296-5-0x0000000001610000-0x0000000001640000-memory.dmp

Filesize
192KB

Download
memory/1296-4-0x0000000001610000-0x0000000001640000-memory.dmp

Filesize
192KB

Download
memory/1296-8-0x0000000010001000-0x0000000010002000-memory.dmp

Filesize
4KB

Download
memory/1296-9-0x0000000010000000-0x00000000100E9000-memory.dmp

Filesize
932KB

Download
memory/1296-11-0x0000000001610000-0x0000000001640000-memory.dmp

Filesize
192KB

Download