Malware Analysis Report

2025-01-02 07:32

Sample ID 240815-18x24sseqp
Target 7e57b18704b36d9a048cedd62be3b3f0N.exe
SHA256 c7192eeb1e859d810cde77b27c1fd51f41d0bb11e198c695df0ae2886cd2cb24
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

c7192eeb1e859d810cde77b27c1fd51f41d0bb11e198c695df0ae2886cd2cb24

Threat Level: Known bad

The file 7e57b18704b36d9a048cedd62be3b3f0N.exe 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

Loads dropped DLL

UPX packed file

Enumerates connected drives

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-15 22:19

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-15 22:19

Reported

2024-08-15 22:21

Platform

win7-20240705-en

Max time kernel

116s

Max time network

67s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.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
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) \??\W: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\PROGRA~2\MICROS~1\Office14\GROOVEEX.DLL.tmp C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened for modification C:\PROGRA~2\MICROS~1\Office14\GROOVEEX.DLL.dat C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File created C:\Program Files\Common Files\System\symsrv.dll C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened for modification C:\PROGRA~2\MICROS~1\Office14\GROOVEEX.DLL C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.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\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe

"C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.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 72.14.178.174:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 72.14.178.174:80 www.aieov.com tcp
US 72.14.178.174:80 www.aieov.com tcp
US 72.14.178.174:80 www.aieov.com tcp
US 72.14.178.174:80 www.aieov.com tcp
US 72.14.178.174:80 www.aieov.com tcp

Files

memory/2204-0-0x0000000000400000-0x0000000000438000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2204-4-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2204-6-0x0000000000408000-0x000000000040C000-memory.dmp

\PROGRA~2\MICROS~1\Office14\GROOVEEX.DLL.tmp

MD5 51f32e8ae2cef185fbb7441ccf697c0d
SHA1 7ac4b30b20db5ed73e99235bdd7a8556b5eeeaf8
SHA256 8abede0fbf07df73f5bdb09c3c012e471bee34824f9a97decf053d67dabe03f5
SHA512 045e072cd4112f6668abebea60f39498ba9e2aabd15a0dd9448434789c4321a5c47f1bcf7daa3dbb836af3ee4d260c09df82a34ec3af740a8cfb5dd671a115e0

memory/2204-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2204-15-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2204-17-0x0000000073800000-0x0000000073C0B000-memory.dmp

memory/2204-19-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2204-23-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2204-27-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2204-31-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/2204-36-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2204-40-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-15 22:19

Reported

2024-08-15 22:21

Platform

win10v2004-20240802-en

Max time kernel

114s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.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

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.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\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.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\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.exe

"C:\Users\Admin\AppData\Local\Temp\7e57b18704b36d9a048cedd62be3b3f0N.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=4228,i,10369132178352108590,11047993562598554317,262144 --variations-seed-version --mojo-platform-channel-handle=4184 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 www.aieov.com udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 196.19.79.45.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.79.19.196:80 www.aieov.com tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 16.173.189.20.in-addr.arpa udp

Files

memory/720-0-0x0000000000400000-0x0000000000438000-memory.dmp

memory/720-5-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/720-7-0x0000000000408000-0x000000000040C000-memory.dmp

memory/720-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/720-14-0x0000000010000000-0x0000000010030000-memory.dmp

memory/720-15-0x0000000010000000-0x0000000010030000-memory.dmp

memory/720-20-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/720-25-0x0000000010000000-0x0000000010030000-memory.dmp

memory/720-28-0x0000000010000000-0x0000000010030000-memory.dmp

memory/720-29-0x0000000010000000-0x0000000010030000-memory.dmp

memory/720-34-0x0000000010000000-0x0000000010030000-memory.dmp