floxif | 1cb8bbbfcec0d3960962130a5ae3b05d3c317297bc1e1db5f35207857d080bbb

Analysis

max time kernel
148s
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
31-12-2024 04:57

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General

Target

JaffaCakes118_05920cbd564d6e24da0605ea0c9d8ce0.dll
Size

146KB
MD5

05920cbd564d6e24da0605ea0c9d8ce0
SHA1

589a156a598c3089b0860ce529cb0202fcbf27ee
SHA256

1cb8bbbfcec0d3960962130a5ae3b05d3c317297bc1e1db5f35207857d080bbb
SHA512

199c6b4cc30e4dd43c95e5a11e72e42f172d50f07fecdff62aaa058b2f94204ad2a4ce54c3adc8a2935c94b9cf1f49d13036ceb36b3c293cdad9efa4c9637710
SSDEEP

3072:s8GQN1YBrOYm155Au07BJQ33f8PfJA+R4NvVwFmrtBj6jZHq:s8FN1YBazw0nU3JAEwVwUrTWjZK

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/0x000c000000023b2e-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023b2e-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1044	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b2e-1.dat	upx
behavioral2/memory/1044-2-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/1044-6-0x0000000010000000-0x0000000010033000-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	1044	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4224 wrote to memory of 1044	4224	rundll32.exe	82
PID 4224 wrote to memory of 1044	4224	rundll32.exe	82
PID 4224 wrote to memory of 1044	4224	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_05920cbd564d6e24da0605ea0c9d8ce0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4224
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_05920cbd564d6e24da0605ea0c9d8ce0.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1044

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
1458e1451cf701b363c99cfb81317789

SHA1
0dc90bc9a49f5d973e1649c0db09087ef3e0bb3f

SHA256
ace427ef87c8c1a9457e122c787d0b0c3b5a04d45f6df4d9a337e215def47c13

SHA512
b9ac9af373a93c6db20000bfe4d8c85a9df0c97a15d4989501f719a84f0cef2b72d3697a9a8b927b1cdc9a687cde6f1603fc9e5ba6bc4f63d461a8fadfd67e34

Download Submit
memory/1044-2-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/1044-5-0x0000000075331000-0x0000000075332000-memory.dmp

Filesize
4KB

Download
memory/1044-6-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download