Malware Analysis Report

2024-12-08 02:38

Sample ID 240913-xxh72athla
Target 85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25
SHA256 85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25
Tags
floxif backdoor discovery trojan upx persistence privilege_escalation
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25

Threat Level: Known bad

The file 85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25 was found to be: Known bad.

Malicious Activity Summary

floxif backdoor discovery trojan upx persistence privilege_escalation

Floxif, Floodfix

Detects Floxif payload

Event Triggered Execution: AppInit DLLs

UPX packed file

Executes dropped EXE

ACProtect 1.3x - 1.4x DLL software

Loads dropped DLL

Enumerates connected drives

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-13 19:13

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-13 19:13

Reported

2024-09-13 19:16

Platform

win10v2004-20240802-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.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

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.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\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.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\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\jds240629718.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe

"C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe"

C:\Users\Admin\AppData\Local\Temp\jds240629718.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe

"C:\Users\Admin\AppData\Local\Temp\jds240629718.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe"

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 javadl-esd-secure.oracle.com udp
NL 92.123.165.224:443 javadl-esd-secure.oracle.com tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 203.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 224.165.123.92.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 javadl.oracle.com udp
GB 23.204.232.117:80 javadl.oracle.com tcp
GB 23.204.232.117:443 javadl.oracle.com tcp
US 8.8.8.8:53 sdlc-esd.oracle.com udp
US 8.8.8.8:53 www.aieov.com udp
US 45.33.30.197:80 www.aieov.com tcp
FR 23.212.224.6:443 sdlc-esd.oracle.com tcp
US 8.8.8.8:53 117.232.204.23.in-addr.arpa udp
US 8.8.8.8:53 6.224.212.23.in-addr.arpa udp
US 8.8.8.8:53 197.30.33.45.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 45.33.30.197:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.33.30.197:80 www.aieov.com tcp
US 8.8.8.8:53 154.239.44.20.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 5isohu.com udp
US 45.33.30.197:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.33.30.197:80 www.aieov.com tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.33.30.197:80 www.aieov.com tcp

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/1532-2-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1532-6-0x0000000000FB1000-0x0000000000FB2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\jds240629718.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe

MD5 2ae766974ba27233b9a3875bc1f2ce65
SHA1 6b93e73130fb70c1abf199768fef983466827bbc
SHA256 acf5e22c4b1a98dc889fe2ad25626ea6fb8cce66edf1c2a4773ad4742f71203c
SHA512 d579d3d14857365cf1f2cf4d7d9f29f47a4dd071d61b4dd4c1310ae2864ea2671d6d55042e49ba57600b936420f09feb3d3005047bdc317dee488ee187026b7a

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

MD5 e9a05697c4ab9feea88eab348d10cd80
SHA1 1ac7358c56f189f93dee4659419cef770ba2358d
SHA256 927d7b794365dfeb54d945f2116a6e3cf10ad5720a2aff3a9094a7c4800709f5
SHA512 45c7937b5ffd3f764c304ddd9fd023445701bcbcc61c27d3d3f79003806dc879d82a8b73561b28608eb47dfc7a03a2a57e72af3b3292266f7979f29870bc8ea5

C:\Users\Admin\AppData\Local\Temp\jds240629718.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe.tmp

MD5 fd2b259407f5bed555b193cf96895e15
SHA1 84865448f1e0c1054b7a05f6c7ae123e69919361
SHA256 906e843bca222b76f3b31d41e4e9b386ecee6e0a8a0ec501a64648bcd007563b
SHA512 0c553b814578580b0fb21003158140aa0a40335ea68544602600501df54068bf6a0662e9ae70c921f0974f79d60266659c73de37eef35973d4cad01c7e85e2fc

memory/1532-130-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1532-131-0x0000000000FB0000-0x000000000117F000-memory.dmp

memory/3528-133-0x0000000000680000-0x0000000000815000-memory.dmp

memory/1532-139-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/1532-146-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1532-164-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-13 19:13

Reported

2024-09-13 19:16

Platform

win7-20240708-en

Max time kernel

117s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.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

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\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.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\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe

"C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe"

Network

N/A

Files

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/2052-3-0x0000000010000000-0x0000000010030000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\jds259439755.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe

MD5 2ae766974ba27233b9a3875bc1f2ce65
SHA1 6b93e73130fb70c1abf199768fef983466827bbc
SHA256 acf5e22c4b1a98dc889fe2ad25626ea6fb8cce66edf1c2a4773ad4742f71203c
SHA512 d579d3d14857365cf1f2cf4d7d9f29f47a4dd071d61b4dd4c1310ae2864ea2671d6d55042e49ba57600b936420f09feb3d3005047bdc317dee488ee187026b7a

\Users\Admin\AppData\Local\Temp\jds259439755.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe.tmp

MD5 b8f493582d99e1dddcb3f9cefa2ee7d9
SHA1 68f0fb147596551d5441318f4b3f797b8c852f64
SHA256 87795ee0d9fabffec7f02198c2855520c3d459ff0ce21a46e97d2d93e8c0c6c6
SHA512 4afbba2fb8a7035b7b2678740a568ee9a6927a4c3135f771a673d6815e4e966b00ae8c47db6efc6f1060817c8e824f906ab3b78d6f6e5fbb334f60bbf9880268

memory/2052-23-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2052-21-0x00000000009B0000-0x0000000000B7F000-memory.dmp