Malware Analysis Report

2025-01-02 07:24

Sample ID 240913-y76azsxflh
Target bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c
SHA256 bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c
Tags
upx floxif backdoor discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c

Threat Level: Known bad

The file bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c was found to be: Known bad.

Malicious Activity Summary

upx floxif backdoor discovery trojan

Floxif, Floodfix

Detects Floxif payload

ACProtect 1.3x - 1.4x DLL software

Loads dropped DLL

UPX packed file

Drops file in Program Files directory

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-13 20:26

Signatures

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-13 20:26

Reported

2024-09-13 20:29

Platform

win7-20240903-en

Max time kernel

141s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe"

Signatures

Floxif, Floodfix

backdoor trojan floxif

Detects Floxif payload

backdoor
Description Indicator Process Target
N/A N/A N/A N/A

ACProtect 1.3x - 1.4x DLL software

Description Indicator Process Target
N/A N/A N/A N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Common Files\System\symsrv.dll C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe

"C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2192 -s 400

Network

N/A

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2192-4-0x0000000000ED0000-0x00000000045F1000-memory.dmp

memory/2192-5-0x000000000458A000-0x000000000458B000-memory.dmp

memory/2192-6-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2192-7-0x0000000000ED0000-0x00000000045F1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-13 20:26

Reported

2024-09-13 20:29

Platform

win10v2004-20240802-en

Max time kernel

130s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe"

Signatures

Floxif, Floodfix

backdoor trojan floxif

Detects Floxif payload

backdoor
Description Indicator Process Target
N/A N/A N/A N/A

ACProtect 1.3x - 1.4x DLL software

Description Indicator Process Target
N/A N/A N/A N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Common Files\System\symsrv.dll C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe

"C:\Users\Admin\AppData\Local\Temp\bbc6846368d5e89fc1649b606e9a611500ebc53e6f97fc19a054f6f2a798701c.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3244 -ip 3244

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3244 -s 756

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4304,i,12198811467968044966,17227406646827438786,262144 --variations-seed-version --mojo-platform-channel-handle=4140 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 203.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 18.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/3244-5-0x00000000004E0000-0x0000000003C01000-memory.dmp

memory/3244-7-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3244-6-0x0000000003B9A000-0x0000000003B9B000-memory.dmp

memory/3244-10-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3244-8-0x00000000004E0000-0x0000000003C01000-memory.dmp