55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee

Analysis

max time kernel
102s
max time network
138s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19-09-2022 05:40

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General

Target

55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Size

267KB
MD5

482dce56140663a6571135fdf7ddff06
SHA1

4dfb52ef6e89b6847185dbc62ef2854c00636982
SHA256

55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee
SHA512

0dcb4600539a061ccd6c2d05ba597c2cb50a2f0d5f3b05988aef849ec152e8dba4a38e1bf5f01bd33d927d2c664801e81864849093992d614b7b5ca8a6679a3d
SSDEEP

6144:S5O8QSO/9xxY3hkm1ZDLZA3M7KrD37lSCVzhhyc:j0OYGmvLZA3M7KrDJVn

Score

8^/10

bootkit persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1988	SeFastInstall2_3218.exe

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x00090000000122ce-56.dat	upx
behavioral1/files/0x00090000000122ce-58.dat	upx
behavioral1/files/0x00090000000122ce-63.dat	upx
behavioral1/files/0x00090000000122ce-62.dat	upx
behavioral1/files/0x00090000000122ce-64.dat	upx
behavioral1/files/0x00090000000122ce-65.dat	upx
behavioral1/memory/1988-67-0x0000000000400000-0x00000000004AB000-memory.dmp	upx
behavioral1/memory/1988-68-0x0000000000400000-0x00000000004AB000-memory.dmp	upx

Loads dropped DLL 7 IoCs

pid	Process
1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
1988	SeFastInstall2_3218.exe
1988	SeFastInstall2_3218.exe
1988	SeFastInstall2_3218.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	SeFastInstall2_3218.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	\??\c:\windows\taobao.ico	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 32 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\ = "Internet Explorer"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell\OpenHomePage	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\InfoTip = "ÌÔ±¦-ÌØ¼Û"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\DefaultIcon	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\Shell	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\ShellFolder\Attributes = "0"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\ShellFolder	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\ShellFolder\Attributes = "0"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\Shell\Internet Explorer\Command\ = "C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe http://www.05zw.com/taobao/taobao.html"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\Shell	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\TypeLib	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell\OpenHomePage\Command	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\Shell\Internet Explorer	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\Shell\Internet Explorer\Command	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\Shell\Internet Explorer	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\TypeLib\ = "{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\DefaultIcon	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\DefaultIcon\ = "c:\\windows\\taobao.ico"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\TypeLib	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\Shell\Internet Explorer\Command\ = "C:\\Program Files (x86)\\Internet Explorer\\iexplore.exe http://www.my133.net/?1"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\TypeLib\ = "{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\ = "ÌÔ±¦-ÌØ¼Û"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{EF2B9DCD-E16C-4CCE-8D71-2745C0E8B2F8}\ShellFolder	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\InfoTip = "Internet Explorer"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\Shell\Internet Explorer\Command	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{96AB6BA4-74D1-4EA6-8E2F-3B111A858F73}\DefaultIcon\ = "C:\\Windows\\SysWow64\\SHELL32.DLL,220"	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1988	SeFastInstall2_3218.exe
1988	SeFastInstall2_3218.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 1988	1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe	26
PID 1088 wrote to memory of 1988	1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe	26
PID 1088 wrote to memory of 1988	1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe	26
PID 1088 wrote to memory of 1988	1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe	26
PID 1088 wrote to memory of 1988	1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe	26
PID 1088 wrote to memory of 1988	1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe	26
PID 1088 wrote to memory of 1988	1088	55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe	26

C:\Users\Admin\AppData\Local\Temp\55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe
"C:\Users\Admin\AppData\Local\Temp\55c86f45c676ecdc2b49381bef2dae8b8bf1490a6acbb03932110f9bb47946ee.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Users\Admin\AppData\Local\Temp\SeFastInstall2_3218.exe
  "C:\Users\Admin\AppData\Local\Temp\SeFastInstall2_3218.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetWindowsHookEx
  PID:1988

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\SeFastInstall2_3218.exe

Filesize
227KB

MD5
006bcf6d8e9bcda4ad8323f3622e245b

SHA1
45b88bd752ea8853a3aebf5779ae47666253251c

SHA256
8854b97a765d20e2f15cc2da23bd78584bc3f67ec05a7e3f16020690f25d3821

SHA512
4008fbce2719618acd2a4f852a601517935a018f56ff361c4c08a88fb1446f2e35652c8128ed86b313bd198966ffb8892c6ee7000132551d396dbcb40ba48ec0

Download Submit
C:\Users\Admin\AppData\Local\Temp\SeFastInstall2_3218.exe

Filesize
227KB

MD5
006bcf6d8e9bcda4ad8323f3622e245b

SHA1
45b88bd752ea8853a3aebf5779ae47666253251c

SHA256
8854b97a765d20e2f15cc2da23bd78584bc3f67ec05a7e3f16020690f25d3821

SHA512
4008fbce2719618acd2a4f852a601517935a018f56ff361c4c08a88fb1446f2e35652c8128ed86b313bd198966ffb8892c6ee7000132551d396dbcb40ba48ec0

Download Submit
\Users\Admin\AppData\Local\Temp\SeFastInstall2_3218.exe

Filesize
227KB

MD5
006bcf6d8e9bcda4ad8323f3622e245b

SHA1
45b88bd752ea8853a3aebf5779ae47666253251c

SHA256
8854b97a765d20e2f15cc2da23bd78584bc3f67ec05a7e3f16020690f25d3821

SHA512
4008fbce2719618acd2a4f852a601517935a018f56ff361c4c08a88fb1446f2e35652c8128ed86b313bd198966ffb8892c6ee7000132551d396dbcb40ba48ec0

Download Submit
\Users\Admin\AppData\Local\Temp\SeFastInstall2_3218.exe

Filesize
227KB

MD5
006bcf6d8e9bcda4ad8323f3622e245b

SHA1
45b88bd752ea8853a3aebf5779ae47666253251c

SHA256
8854b97a765d20e2f15cc2da23bd78584bc3f67ec05a7e3f16020690f25d3821

SHA512
4008fbce2719618acd2a4f852a601517935a018f56ff361c4c08a88fb1446f2e35652c8128ed86b313bd198966ffb8892c6ee7000132551d396dbcb40ba48ec0

Download Submit
\Users\Admin\AppData\Local\Temp\SeFastInstall2_3218.exe

Filesize
227KB

MD5
006bcf6d8e9bcda4ad8323f3622e245b

SHA1
45b88bd752ea8853a3aebf5779ae47666253251c

SHA256
8854b97a765d20e2f15cc2da23bd78584bc3f67ec05a7e3f16020690f25d3821

SHA512
4008fbce2719618acd2a4f852a601517935a018f56ff361c4c08a88fb1446f2e35652c8128ed86b313bd198966ffb8892c6ee7000132551d396dbcb40ba48ec0

Download Submit
\Users\Admin\AppData\Local\Temp\SeFastInstall2_3218.exe

Filesize
227KB

MD5
006bcf6d8e9bcda4ad8323f3622e245b

SHA1
45b88bd752ea8853a3aebf5779ae47666253251c

SHA256
8854b97a765d20e2f15cc2da23bd78584bc3f67ec05a7e3f16020690f25d3821

SHA512
4008fbce2719618acd2a4f852a601517935a018f56ff361c4c08a88fb1446f2e35652c8128ed86b313bd198966ffb8892c6ee7000132551d396dbcb40ba48ec0

Download Submit
\Users\Admin\AppData\Local\Temp\nso5469.tmp\System.dll

Filesize
11KB

MD5
00a0194c20ee912257df53bfe258ee4a

SHA1
d7b4e319bc5119024690dc8230b9cc919b1b86b2

SHA256
dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

SHA512
3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

Download Submit
\Users\Admin\AppData\Local\Temp\nso5469.tmp\inetc.dll

Filesize
20KB

MD5
8d8fdad7e153d6b82913f6fdc407d12c

SHA1
aabbeed33cd5221e4cb22aab6e48310df94facfd

SHA256
e727c8bba6686c4814602f2bc089af4b4cf3498d1dbe1a08d8c4732da5ba046b

SHA512
42bc0ce1aca63904c34025307fd4b1d9f480ae47e42e7dfa48bbbf8286d947de2989435ad7a748951291307949217afeebcd31d10a1356c9366d3187085773a2

Download Submit
\Users\Admin\AppData\Local\Temp\nso5469.tmp\md5dll.dll

Filesize
8KB

MD5
a7d710e78711d5ab90e4792763241754

SHA1
f31cecd926c5d497aba163a17b75975ec34beb13

SHA256
9b05dd603f13c196f3f21c43f48834208fed2294f7090fcd1334931014611fb2

SHA512
f0ca2d6f9a8aeac84ef8b051154a041adffc46e3e9aced142e9c7bf5f7272b047e1db421d38cb2d9182d7442bee3dd806618b019ec042a23ae0e71671d2943c0

Download Submit
memory/1088-54-0x0000000076681000-0x0000000076683000-memory.dmp

Filesize
8KB

Download
memory/1088-66-0x0000000002380000-0x000000000242B000-memory.dmp

Filesize
684KB

Download
memory/1988-67-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/1988-68-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download