floxif | ad2d0056f7359e8afc0cf6c9d8e18412047e6e01e0dc101ca9e95f1b855d9030

Analysis

max time kernel
95s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 17:18

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General

Target

JaffaCakes118_5dc2ff78d8091bce9adc84586c94695f.dll
Size

355KB
MD5

5dc2ff78d8091bce9adc84586c94695f
SHA1

02b393f811c55f142af61f54e1f1a885102da6ea
SHA256

ad2d0056f7359e8afc0cf6c9d8e18412047e6e01e0dc101ca9e95f1b855d9030
SHA512

e53da6e76c7e04ba1804b3f4539ca3faaf7a8863ed93a88858cfe5e6d0e06af21aca5e3ff59acebdf1431e9f2208f4da9ec704fc44e9bdbef5e6caa00580c456
SSDEEP

6144:dr4xZSeUXTB6GWIU3XYOGsBvnHuUAv+qdbC8SZFN:dr4xZSeUV6GWdn9R6b2

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/0x000c000000023b11-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b11-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
4144	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b11-1.dat	upx
behavioral2/memory/4144-4-0x0000000010000000-0x0000000010032000-memory.dmp	upx
behavioral2/memory/4144-5-0x0000000010000000-0x0000000010032000-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	4144	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 4144	3988	rundll32.exe	82
PID 3988 wrote to memory of 4144	3988	rundll32.exe	82
PID 3988 wrote to memory of 4144	3988	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5dc2ff78d8091bce9adc84586c94695f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3988
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5dc2ff78d8091bce9adc84586c94695f.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4144

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
71KB

MD5
bf8084efb36a3974d46604f308b7ea65

SHA1
94f0f16b6c35a2451eb6392e13930fda3229d8b1

SHA256
611c4b289a0a7b9b6acbe3d9d03a3799e52174eab3d8288e242e1006c78c264a

SHA512
0200870637be49cd867372cb85613ad347b927a00aae0ecebf300014a341ee29673030282092e7cd1a8299866dacca90e522755ed3d4eb45daef7d00c729a7c5

Download Submit
memory/4144-4-0x0000000010000000-0x0000000010032000-memory.dmp

Filesize
200KB

Download
memory/4144-5-0x0000000010000000-0x0000000010032000-memory.dmp

Filesize
200KB

Download