Malware Analysis Report

2024-11-13 20:02

Sample ID 240909-vs6fnazelm
Target 87e78de4bb103e9876e6caf8e77e21f0N.exe
SHA256 80d29096da8b75487f2884aba881bb85aed905b9f5bafddb6fb067fe6547b4be
Tags
floxif backdoor discovery 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

80d29096da8b75487f2884aba881bb85aed905b9f5bafddb6fb067fe6547b4be

Threat Level: Known bad

The file 87e78de4bb103e9876e6caf8e77e21f0N.exe was found to be: Known bad.

Malicious Activity Summary

floxif backdoor discovery trojan upx

Floxif, Floodfix

Detects Floxif payload

ACProtect 1.3x - 1.4x DLL software

Loads dropped DLL

UPX packed file

Enumerates connected drives

Drops file in Program Files directory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

NSIS installer

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-09 17:16

Signatures

NSIS installer

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-09 17:16

Reported

2024-09-09 17:18

Platform

win7-20240903-en

Max time kernel

120s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.exe 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
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

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.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\87e78de4bb103e9876e6caf8e77e21f0N.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.exe N/A

Enumerates physical storage devices

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\87e78de4bb103e9876e6caf8e77e21f0N.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.exe

"C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.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 198.58.118.167:80 www.aieov.com tcp
US 198.58.118.167:80 www.aieov.com tcp
US 198.58.118.167:80 www.aieov.com tcp
US 96.126.123.244:80 www.aieov.com tcp
US 45.79.19.196:80 www.aieov.com tcp
US 45.79.19.196:80 www.aieov.com tcp
US 45.79.19.196:80 www.aieov.com tcp
US 45.79.19.196:80 www.aieov.com tcp
US 72.14.178.174:80 www.aieov.com tcp
US 8.8.8.8:53 udp

Files

memory/2404-3-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2404-5-0x0000000000403000-0x0000000000406000-memory.dmp

memory/2404-11-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2404-12-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2404-15-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2404-16-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2404-22-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2404-25-0x0000000010000000-0x0000000010030000-memory.dmp

C:\Program Files\Common Files\System\symsrv.dll.000

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/2404-28-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2404-29-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-09 17:16

Reported

2024-09-09 17:18

Platform

win10v2004-20240802-en

Max time kernel

117s

Max time network

116s

Command Line

"C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.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
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\87e78de4bb103e9876e6caf8e77e21f0N.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\87e78de4bb103e9876e6caf8e77e21f0N.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.exe N/A

Enumerates physical storage devices

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\87e78de4bb103e9876e6caf8e77e21f0N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.exe

"C:\Users\Admin\AppData\Local\Temp\87e78de4bb103e9876e6caf8e77e21f0N.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 www.aieov.com udp
US 72.14.185.43:80 www.aieov.com tcp
US 8.8.8.8:53 43.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 43.185.14.72.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 72.14.185.43:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 72.14.185.43:80 www.aieov.com tcp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 72.14.185.43:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 72.14.185.43:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 72.14.185.43:80 www.aieov.com tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 2.36.159.162.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/3592-1-0x0000000000403000-0x0000000000404000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/3592-5-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3592-7-0x0000000000400000-0x0000000000430000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\nsqAD3A.tmp\InstallOptions.dll

MD5 08c82a46416a5e2b471d457968f53816
SHA1 3e3897c20b9e89b279b4764a633f67955bf8f09a
SHA256 435baf3b7282c9110697a4916834ef9371dd29fae6b4cb8e19c19eb126562dc9
SHA512 91e2055b91d04b2348a923cb298ac6ba3637de5038dc4f849c4d2f1665d17de9cd6eb6a97d42d0f894d65348c8fd8e79cd61b667ea5a78e8960347e8cc8db81d

C:\Users\Admin\AppData\Local\Temp\nsqAD3A.tmp\ioSpecial.ini

MD5 f4f843a819e9cf8293b0c12f69778fb7
SHA1 a96eab46d652672b5f469f4b90ff6c63cc088593
SHA256 e98c1e393eeffd6a07779f9d75964f0d160bdd830d2717bd820e1dfca800384e
SHA512 ad85eaccd8345bc43af325a2ea5ba548fcd56dca1f8680ae7578265a9071d5e2845fa8b40b6348d6d6661aebe09669b50f50b958d9ea9b748ddc8c1ad3b79f07

memory/3592-96-0x0000000000400000-0x0000000000430000-memory.dmp

memory/3592-99-0x0000000000403000-0x0000000000404000-memory.dmp

memory/3592-100-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3592-101-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3592-106-0x0000000010000000-0x0000000010030000-memory.dmp

C:\Program Files\Common Files\System\symsrv.dll.000

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/3592-111-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3592-117-0x0000000010000000-0x0000000010030000-memory.dmp