hxxp://majonline[.]yunhujiaozhongxin[.]net/Web/JS/michatutil[.]js?_v=230608

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31-08-2023 15:03

230831-se5k4aff86 1

31-08-2023 15:02

230831-sekwpafc7s 1

Analysis

max time kernel
6s
max time network
19s
platform
windows10-1703_x64
resource
win10-20230703-en
resource tags

arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system
submitted
31-08-2023 15:02

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General

Target

http://majonline.yunhujiaozhongxin.net/Web/JS/michatutil.js?_v=230608

Score

1^/10

Malware Config

Signatures

Modifies Internet Explorer Phishing Filter 1 TTPs 2 IoCs

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\PhishingFilter	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = b6baf91fcfadd901	iexplore.exe

Modifies Internet Explorer settings 1 TTPs 18 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.15063.0\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\RepId\PublicId = "{35F9001B-2127-4EA1-8867-B30AB105D49E}"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{6703709D-480F-11EE-9A93-722D6E417306} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4175128012-676912335-1083716439-1000\Software\Microsoft\Internet Explorer\RepId	iexplore.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
5060	iexplore.exe
5060	iexplore.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
5060	iexplore.exe
5060	iexplore.exe
2004	IEXPLORE.EXE
2004	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 2004	5060	iexplore.exe	70
PID 5060 wrote to memory of 2004	5060	iexplore.exe	70
PID 5060 wrote to memory of 2004	5060	iexplore.exe	70

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" http://majonline.yunhujiaozhongxin.net/Web/JS/michatutil.js?_v=230608
1⤵
- Modifies Internet Explorer Phishing Filter
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5060 CREDAT:82945 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:2004
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\65VODWJU\michatutil.js"
  2⤵
  PID:3240

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5TT13YUN\michatutil[1].js

Filesize
87KB

MD5
809844052a1950aeb40f781282bfd50d

SHA1
ea640231d8a96028e1ab12ef2ce075f4132c7f65

SHA256
315490ed250d44288893f8f21228a3404e01c84a8df91729ad2d93d9f2d28203

SHA512
79524773dd5e491a714f779273be25501cfe5f73daf74f5e7f72537e4b996c4deeffa45ab3294756038090168052ccfdf354ec4895d01d1cdd2ab9945087dec1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\65VODWJU\michatutil.js.xa1xbfs.partial

Filesize
87KB

MD5
809844052a1950aeb40f781282bfd50d

SHA1
ea640231d8a96028e1ab12ef2ce075f4132c7f65

SHA256
315490ed250d44288893f8f21228a3404e01c84a8df91729ad2d93d9f2d28203

SHA512
79524773dd5e491a714f779273be25501cfe5f73daf74f5e7f72537e4b996c4deeffa45ab3294756038090168052ccfdf354ec4895d01d1cdd2ab9945087dec1

Download Submit

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads