Malware Analysis Report

2025-01-02 07:20

Sample ID 240914-szn4va1dnk
Target 7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c
SHA256 7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c
Tags
floxif backdoor discovery persistence privilege_escalation trojan upx
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

7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c

Threat Level: Known bad

The file 7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c was found to be: Known bad.

Malicious Activity Summary

floxif backdoor discovery persistence privilege_escalation trojan upx

Floxif, Floodfix

Detects Floxif payload

Event Triggered Execution: AppInit DLLs

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Loads dropped DLL

Enumerates connected drives

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-14 15:33

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-14 15:33

Reported

2024-09-14 15:36

Platform

win7-20240903-en

Max time kernel

122s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe"

Signatures

Floxif, Floodfix

backdoor trojan floxif

Detects Floxif payload

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

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

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

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe 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\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.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\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe

"C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 www.aieov.com udp
US 173.255.194.134:80 www.aieov.com tcp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2108-3-0x0000000010000000-0x0000000010030000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\log.txt

MD5 b0e242f6683a9f14986ada2e49677144
SHA1 45ad4b1d2659404d19ca0e7e31205aedd46ab5b7
SHA256 b64b51fdb239495d8407a39ba21458174252607bd73dd716d940cb8509d5e347
SHA512 a4730143b6ca68027706aa2e6cbfabf744e13ed513b0ab9b95a8c31e56545dd79ab9398a3eeda83e6899b15a906fdcab6c0437c7588cb48fee7a8195f1c84140

memory/2108-62-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2108-61-0x0000000000CF0000-0x0000000000D8A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-14 15:33

Reported

2024-09-14 15:36

Platform

win10v2004-20240802-en

Max time kernel

125s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe"

Signatures

Floxif, Floodfix

backdoor trojan floxif

Detects Floxif payload

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

Event Triggered Execution: AppInit DLLs

persistence privilege_escalation

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

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe 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\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.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\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe

"C:\Users\Admin\AppData\Local\Temp\7b0170e43cae7800348df79ca10f39aba701362f67fb54c6069828a6a8abb43c.exe"

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=4160,i,10369132178352108590,11047993562598554317,262144 --variations-seed-version --mojo-platform-channel-handle=3808 /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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 www.aieov.com udp
US 45.33.30.197:80 www.aieov.com tcp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 197.30.33.45.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.33.30.197:80 www.aieov.com tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 209.143.182.52.in-addr.arpa udp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2760-2-0x0000000010000000-0x0000000010030000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\log.txt

MD5 28e83e0fa3fb5108122e3bc751589954
SHA1 2cd15d43dbd544670e4edd4ec0b792951648f24c
SHA256 3cfd678d7c9a9f2bcb4fe6990883569bebae6dc580455e3693fdbc72b9d92081
SHA512 730fe7744b35f026a5370ab97e5c668d4836b12469d076283f0562efdb0e34124ee6a1830adf2fa0ea150bf1be6f8516a34c04647392dc3a22eb342b635eef7d

memory/2760-63-0x0000000000A20000-0x0000000000ABA000-memory.dmp

memory/2760-65-0x0000000010000000-0x0000000010030000-memory.dmp