floxif | dde724e454d539131e0e905b9eabc7dafc8c62d81d73f47e06eba3f75a0d973f

Analysis

max time kernel
149s
max time network
151s
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 04:33

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General

Target

2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.exe
Size

4.7MB
MD5

86983160ed279db5080000088b1157a5
SHA1

72dd607753d96d362dedfdad2edc5f4db4b2f418
SHA256

dde724e454d539131e0e905b9eabc7dafc8c62d81d73f47e06eba3f75a0d973f
SHA512

5e363104bbb421b4c3776d252a4d2b090f5a6effeca7e7d288695e0a53acb949eb901419ea32b2b2e75906485bb1bfd527f89397b3071c48037fc01b658b6d72
SSDEEP

98304:kBe40bl9dTYPenSX5gSoCU0DHDB1dE46V3u/v:h3TaenqU8L/v

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/0x000d000000023c1f-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000d000000023c1f-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4816	2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.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:	2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000d000000023c1f-1.dat	upx
behavioral2/memory/4816-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4816-14-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3268	4816	WerFault.exe	82
2372	4816	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	2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4816	2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.exe
4816	2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.exe
4816	2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.exe
4816	2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4816	2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.exe

C:\Users\Admin\AppData\Local\Temp\2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-08_86983160ed279db5080000088b1157a5_bkransomware_floxif.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:4816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 1268
  2⤵
  - Program crash
  PID:3268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 1272
  2⤵
  - Program crash
  PID:2372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4816 -ip 4816
1⤵
PID:1736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4816 -ip 4816
1⤵
PID:4540

Network

MITRE ATT&CK Enterprise v15

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

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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/4816-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4816-14-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/4816-12-0x0000000000CE0000-0x00000000011A1000-memory.dmp

Filesize
4.8MB

Download