Malware Analysis Report

2024-12-08 02:39

Sample ID 240913-pvb2ya1gqa
Target 85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25
SHA256 85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25
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

85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25

Threat Level: Known bad

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

Malicious Activity Summary

floxif backdoor discovery trojan upx

Floxif, Floodfix

Detects Floxif payload

Executes dropped EXE

UPX packed file

Loads dropped DLL

ACProtect 1.3x - 1.4x DLL software

Enumerates connected drives

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-13 12:38

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-13 12:38

Reported

2024-09-13 12:41

Platform

win7-20240903-en

Max time kernel

30s

Max time network

19s

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

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/2524-3-0x0000000010000000-0x0000000010030000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\jds259509488.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe

MD5 2ae766974ba27233b9a3875bc1f2ce65
SHA1 6b93e73130fb70c1abf199768fef983466827bbc
SHA256 acf5e22c4b1a98dc889fe2ad25626ea6fb8cce66edf1c2a4773ad4742f71203c
SHA512 d579d3d14857365cf1f2cf4d7d9f29f47a4dd071d61b4dd4c1310ae2864ea2671d6d55042e49ba57600b936420f09feb3d3005047bdc317dee488ee187026b7a

\Users\Admin\AppData\Local\Temp\jds259509488.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe.tmp

MD5 fcd0931a6b7c769b078903a8ab8ee376
SHA1 3e2f3293d29e4e37519256d3e707b25ebbc8eb7d
SHA256 de9dd8c7ab2329446430379b7cbeea7dee3a39ca786e046b2289c4e995303571
SHA512 2a95d84e5f0f9bcd84f13992c6c8ee6836c25e81e4c692e55f9bb275508d53b8e803b82394c87b724afa2b3ee15e363d1de7cfe014f2e28965edf56290d56108

memory/2524-23-0x0000000010000000-0x0000000010030000-memory.dmp

memory/2524-21-0x0000000000190000-0x000000000035F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-13 12:38

Reported

2024-09-13 12:41

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

152s

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\jds240625359.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\jds240625359.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe

"C:\Users\Admin\AppData\Local\Temp\jds240625359.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 javadl-esd-secure.oracle.com udp
GB 104.103.251.196:443 javadl-esd-secure.oracle.com tcp
US 8.8.8.8:53 196.251.103.104.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 javadl.oracle.com udp
GB 104.103.251.196:80 javadl.oracle.com tcp
US 8.8.8.8:53 www.aieov.com udp
US 45.33.18.44:80 www.aieov.com tcp
GB 104.103.251.196:443 javadl.oracle.com tcp
US 8.8.8.8:53 sdlc-esd.oracle.com udp
GB 2.18.108.77:443 sdlc-esd.oracle.com tcp
US 8.8.8.8:53 44.18.33.45.in-addr.arpa udp
US 8.8.8.8:53 77.108.18.2.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.33.18.44:80 www.aieov.com tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.33.18.44:80 www.aieov.com tcp
US 45.33.18.44:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.33.18.44:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 45.33.18.44:80 www.aieov.com tcp
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 45.33.18.44:80 www.aieov.com tcp

Files

memory/3664-2-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/3664-6-0x0000000000D01000-0x0000000000D02000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\jds240625359.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe

MD5 2ae766974ba27233b9a3875bc1f2ce65
SHA1 6b93e73130fb70c1abf199768fef983466827bbc
SHA256 acf5e22c4b1a98dc889fe2ad25626ea6fb8cce66edf1c2a4773ad4742f71203c
SHA512 d579d3d14857365cf1f2cf4d7d9f29f47a4dd071d61b4dd4c1310ae2864ea2671d6d55042e49ba57600b936420f09feb3d3005047bdc317dee488ee187026b7a

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

MD5 c0f2e192e64ffdd48e3cb039e2defdaf
SHA1 a5a9976eb7b1fcac7336d69933131537b8e93170
SHA256 27f75a3e5be38217530fea7f918b0c84556362ecb8b976d70924d8494aa4aa39
SHA512 cdef7df1822b6747ecae7a93c136b08f9ebf53527aac6a1a1353f3fa7e71114831d333d19044cb7f2b16b7487b93ed1e23e8b2b2ef539eb902b98fe74d3641bc

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

MD5 8368b70a5f5423c0e36cdf9a1af21060
SHA1 e8a953c0011bea6beb226977e45e329e582df980
SHA256 0cdb38c36e76d8baf48a652526ecef26ed443c0f01a14ed6f4c7cd9fe70d93ec
SHA512 fb2c41ab9b4f3d3b2f8f8e6601e73f46e2f5cec842f2094e94b9b6f2b35f02b20aa3ed4c52266512a297ad442ab40263b41aac32919f620d663702a23011e523

C:\Users\Admin\AppData\Local\Temp\jds240625359.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe.tmp

MD5 33391e5000b0b0bf3c8df5aa80e1116f
SHA1 a38bb11cdea66247a481e22b411fa5a3228a6a0d
SHA256 d53647421fa607a7132d60c6dd880c16b1b6ab0d9449461a3fb27ce33aa1c82a
SHA512 feb0f80af31e75b3d61e3f0c5031b8901315cf1c4641390551da5feeeec6e41c40ad0869963d9d397035e304280929b532b8bc760cdc51d7aa928cb13908f082

memory/3664-125-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3664-126-0x0000000000D00000-0x0000000000ECF000-memory.dmp

memory/4356-128-0x0000000000C90000-0x0000000000E25000-memory.dmp

memory/3664-134-0x0000000010000000-0x0000000010030000-memory.dmp

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

MD5 1130c911bf5db4b8f7cf9b6f4b457623
SHA1 48e734c4bc1a8b5399bff4954e54b268bde9d54c
SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
SHA512 94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

memory/3664-141-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3664-159-0x0000000010000000-0x0000000010030000-memory.dmp