floxif | d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
27-12-2024 03:17

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General

Target

d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe
Size

2.3MB
MD5

cdd750c611b026a3fec7651af63fa45e
SHA1

f4c564fd1f5880b33e64b6ea828b8ce37d3cf154
SHA256

d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4
SHA512

856c7446ce800d70637ff866429f31fa83c837d47b89a6e1a2705f48dcc4520c932ee4b144f05bc5487e13aa46433c7e17a75aef12af0e7b618f6aaad735529f
SSDEEP

49152:vvgA/4E3IJldbTXp/pXlpc6dd+I1HfG0IyWU55k:vf3AllTZ//vR1OYXjk

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/0x000d000000012263-1.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/0x000d000000012263-1.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
564	d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe
2784	WerFault.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000d000000012263-1.dat	upx
behavioral1/memory/564-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/564-8-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2784	564	WerFault.exe	29

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	d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	564	d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 564 wrote to memory of 2784	564	d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe	30
PID 564 wrote to memory of 2784	564	d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe	30
PID 564 wrote to memory of 2784	564	d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe	30
PID 564 wrote to memory of 2784	564	d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe	30

C:\Users\Admin\AppData\Local\Temp\d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe
"C:\Users\Admin\AppData\Local\Temp\d871738dc1c6084cecb91371534d4fe87848735b96fb069a192fdf205f2976e4.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 564 -s 264
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:2784

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

Replay Monitor

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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/564-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/564-8-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/564-6-0x00000000009C0000-0x0000000000A1A000-memory.dmp

Filesize
360KB

Download