floxif | 562de5d1952d2854a755f1992c05f98c78e89bdcfa2bdc1b178602bc3ee81dd4

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
19-12-2024 22:45

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General

Target

562de5d1952d2854a755f1992c05f98c78e89bdcfa2bdc1b178602bc3ee81dd4N.dll
Size

236KB
MD5

3f18f929437e24444e48787e7ef1d770
SHA1

0e114003082d934a49304d05ea8a4bceb30e11ba
SHA256

562de5d1952d2854a755f1992c05f98c78e89bdcfa2bdc1b178602bc3ee81dd4
SHA512

6681d7b809b1407db69ff3540d51558a3d13956359cc05bd5ed0a94f4a28e486a070e8ac869a5f316d461438ab83fec7a9cf9bc2f28358ae0190ebc3a27e6f97
SSDEEP

6144:0P/Vt2NLKvMpMyVkk/EhdBV+UdvrEFp7hKOr:0P/Vt2NLKEpMy6CEhdBjvrEH7R

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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
behavioral1/files/0x000b000000012268-1.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000b000000012268-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1280	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000b000000012268-1.dat	upx
behavioral1/memory/1280-3-0x00000000001E0000-0x0000000000210000-memory.dmp	upx
behavioral1/memory/1280-5-0x00000000001E0000-0x0000000000210000-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	1280	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 1280	2068	rundll32.exe	31
PID 2068 wrote to memory of 1280	2068	rundll32.exe	31
PID 2068 wrote to memory of 1280	2068	rundll32.exe	31
PID 2068 wrote to memory of 1280	2068	rundll32.exe	31
PID 2068 wrote to memory of 1280	2068	rundll32.exe	31
PID 2068 wrote to memory of 1280	2068	rundll32.exe	31
PID 2068 wrote to memory of 1280	2068	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\562de5d1952d2854a755f1992c05f98c78e89bdcfa2bdc1b178602bc3ee81dd4N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\562de5d1952d2854a755f1992c05f98c78e89bdcfa2bdc1b178602bc3ee81dd4N.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/1280-3-0x00000000001E0000-0x0000000000210000-memory.dmp

Filesize
192KB

Download
memory/1280-5-0x00000000001E0000-0x0000000000210000-memory.dmp

Filesize
192KB

Download