floxif | 09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e

Analysis

max time kernel
149s
max time network
95s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
29/04/2026, 10:01

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General

Target
09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.exe
Size 5.4MB
Sample260429-l2pd3aev3r
SHA256 09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e
MD5 6901c1c90802dba2ba4ef79772240cfe
SHA1 6b447dc3660f1a32e556613e7bbd54ead9588529
SHA512 e1a7573e462048c9856985ea309ea8a177b8c1b0b02d2c27b092d0c700c297dd0ca45b508668fc28c28546989fb8c67db32a6c1881a52a8247032436c0b689d2
SSDEEP 49152:E/vuOPgDRk1bQZ0VEnHEI9HNcHMrqN9+Jz7KF4mfYLP/6CkCSLVHHGAcOzpk+ABp:E542E0Vyr9gwLsb3hb3zjb3dpCvxAw
TLSH
T18546D0127741C03BD02343315A5BA7B8EAB9BB647A30A99777643B4C7B747903B1A34B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery floxif trojan upx

Malware Config

Signatures

Family: 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/0x00090000000293eb-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x00090000000293eb-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1388	09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.exe

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:	09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x00090000000293eb-1.dat	upx
behavioral2/memory/1388-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1388-13-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1300	1388	WerFault.exe	78

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	09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1388	09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.exe
1388	09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1388	09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.exe

C:\Users\Admin\AppData\Local\Temp\09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.exe
"C:\Users\Admin\AppData\Local\Temp\09839615ab5165043eeda48569f27148049007f09bcc1a2e59c4b4431b9f560e.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:1388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1388 -s 732
  2⤵
  - Program crash
  PID:1300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1388 -ip 1388
1⤵
PID:5936

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

symsrv.dll

Path C:\Program Files\Common Files\System\symsrv.dll
Size 67KB
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab
SSDEEP 1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7ZL:c8y93KQjy7G55riF1cMo03V
TLSH
T17863F1372AB5807DDD210D37949F835AB771E5A76C20643FC25907D988B8DD0E3239AE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1388-4-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/1388-13-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/1388-14-0x0000000004840000-0x00000000048A4000-memory.dmp

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memory/1388-12-0x0000000000400000-0x0000000000E3F000-memory.dmp

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