floxif | ee253dc378b9daa58327a12f08711d05d06a270bc629bf859dea3b2cc02a65b9

Analysis

max time kernel
92s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2025 18:51

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General

Target

ee253dc378b9daa58327a12f08711d05d06a270bc629bf859dea3b2cc02a65b9N.dll
Size

511KB
MD5

65c51c3a1c05a34077f87835c4bb9c70
SHA1

d756f18e6484d38bc78bcb6213171a75f714f5a8
SHA256

ee253dc378b9daa58327a12f08711d05d06a270bc629bf859dea3b2cc02a65b9
SHA512

2378a5529fb6acded03c2e7b2537c4ed3a773f244b8965acb81bd7112ba085956932e759e30bddcbdd1b3b1d0e16ab19bfd4df8654ff208ab272b79669d81266
SSDEEP

12288:rHOH/nbI0odv2roaezMtg7CXblJnfCzq/dBjvrEH7+:ruHvAukorlJnKzkzrEH7+

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/0x000b000000023b72-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000b000000023b72-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4572	regsvr32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4572-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/files/0x000b000000023b72-1.dat	upx
behavioral2/memory/4572-6-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	regsvr32.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	regsvr32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4572	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4024 wrote to memory of 4572	4024	regsvr32.exe	85
PID 4024 wrote to memory of 4572	4024	regsvr32.exe	85
PID 4024 wrote to memory of 4572	4024	regsvr32.exe	85

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ee253dc378b9daa58327a12f08711d05d06a270bc629bf859dea3b2cc02a65b9N.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4024
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\ee253dc378b9daa58327a12f08711d05d06a270bc629bf859dea3b2cc02a65b9N.dll
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4572

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/4572-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4572-6-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download