floxif | 7c0765716bca755193b56321d19287af52c3ee5f22b9a0c602fedd0f277f34a6

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-12-2024 00:44

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General

Target

7c0765716bca755193b56321d19287af52c3ee5f22b9a0c602fedd0f277f34a6.dll
Size

142KB
MD5

ea620146aa70a0c8b6985dbbfb0e6830
SHA1

de5c78b847eda2215d0bd1de14d6003951dc1e70
SHA256

7c0765716bca755193b56321d19287af52c3ee5f22b9a0c602fedd0f277f34a6
SHA512

3a2e8c7a32c901ca21065bb4521b2241e2740480666d8d41a96ff9eafcfe1c8b38e1263611b7bed6cc516b458e2271eca81688ced682f2c7905bf4961cf20f8a
SSDEEP

3072:9HXlqzuvVhKP272lQBV+UdE+rECWp7hKm:Tqzudhm2/BV+UdvrEFp7hKm

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/0x0007000000012118-1.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/0x0007000000012118-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1524	rundll32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000012118-1.dat	upx
behavioral1/memory/1524-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1524-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	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	1524	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 1524	2668	rundll32.exe	30
PID 2668 wrote to memory of 1524	2668	rundll32.exe	30
PID 2668 wrote to memory of 1524	2668	rundll32.exe	30
PID 2668 wrote to memory of 1524	2668	rundll32.exe	30
PID 2668 wrote to memory of 1524	2668	rundll32.exe	30
PID 2668 wrote to memory of 1524	2668	rundll32.exe	30
PID 2668 wrote to memory of 1524	2668	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7c0765716bca755193b56321d19287af52c3ee5f22b9a0c602fedd0f277f34a6.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7c0765716bca755193b56321d19287af52c3ee5f22b9a0c602fedd0f277f34a6.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1524

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/1524-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1524-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download