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

Resubmissions

31/08/2023, 15:03

230831-se5k4aff86 1

31/08/2023, 15:02

230831-sekwpafc7s 1

Analysis

max time kernel
126s
max time network
251s
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, 15:03

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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-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\PhishingFilter	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = b899acd6cfadd901	iexplore.exe

Modifies Internet Explorer settings 1 TTPs 56 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{88F7CB28-480F-11EE-874D-428A73DA8D3A} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 8066bf5d1cdcd901	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$WordPress	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.15063.0\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$Telligent	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\FileVersion = "2016061511"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31054876"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000ce10890cc8fcad40be947aafbd3b927a000000000200000000001066000000010000200000003eb9865be669323e738d091238659b5f32bb6c69edd3130a276f34473aaa631b000000000e800000000200002000000012cdd9ab6ac519ddfdd5ffb3043d91c23492462a7ea5a6e227084faf03c9a2ab200000004489d4a5687d422faecfcce8f5cd90b2f6264acbfd74c0a2707e5227b8a7fb2c400000005517e2ceee9e7fb3447897d6bc7e35b0ee65b37a970f984cb41f0035cf6a70832963765701fdb9083e00bb58a28fd45813052d0548e04a324ec16844c824c1d3	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1570171787"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\HistoryJournalCertificate	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\RepId	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\RepId\PublicId = "{378015A7-2587-4230-B899-36AE34D3D161}"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1570171787"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1570640581"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31054876"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\NextUpdateDate = "400307765"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$vBulletin 3	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$http://www.typepad.com/	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$Discuz!	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\HistoryJournalCertificate\NextUpdateDate = "400275774"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31054876"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 60dcc85d1cdcd901	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "400259180"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$blogger	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31054876"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000ce10890cc8fcad40be947aafbd3b927a00000000020000000000106600000001000020000000034e510ff1cc3127b007482c45a6025b2dd972b4c5e90965b0d3bac985e9e521000000000e800000000200002000000071f2693cc74f08d36dc01421fcee6c0401c39f5a34c2290104702dc948eb477820000000f07eaf6d5b1afa07dc28e19b3e5084b1e3cd1b803dd0f8fcfe8a7f2ccee339a94000000016436ed4c9d0c503a17590d4ec63a43dc9d254fd2bbd4907402cda5537693fd5df48c22cc11239d7f106a93748e3748b710375faff1f35101ac6cdd52337ca36	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$MediaWiki	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$vBulletin 4	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1570640581"	IEXPLORE.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3229013990-3330391637-2814184332-1000_Classes\Local Settings	OpenWith.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1316	NOTEPAD.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3128	iexplore.exe
3128	iexplore.exe

Suspicious use of SetWindowsHookEx 17 IoCs

pid	Process
3128	iexplore.exe
3128	iexplore.exe
4900	IEXPLORE.EXE
4900	IEXPLORE.EXE
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe
520	OpenWith.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 4900	3128	iexplore.exe	70
PID 3128 wrote to memory of 4900	3128	iexplore.exe	70
PID 3128 wrote to memory of 4900	3128	iexplore.exe	70
PID 520 wrote to memory of 1316	520	OpenWith.exe	72
PID 520 wrote to memory of 1316	520	OpenWith.exe	72

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:3128
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3128 CREDAT:82945 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:4900

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:520
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Downloads\michatutil.js
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:1316

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
c890b903fcec9cf731ff05696767d3b4

SHA1
02173ab9596c44d68deb2376ebdd18681fd35088

SHA256
7af23c976085389fd7e24692412ae2f38b6ce66b5494baf6c05465ac336f0811

SHA512
cb509b719fad2cbe879a19cfc606cef0a6fb5f61c6bd9baf230c8e124fa755225c50ef7d58eb0889a083fc859015f469a92f09c0bd9eaa5ceab3e8fca85bf01a

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
404B

MD5
ff3aeed74ae4f84d0371a436990b233c

SHA1
7ca1ee5946a71934f8c4ac62cb20979df2925a4c

SHA256
7883fc93e1d5b69f4ae6a9ede2b909eaae82ca7b7963fd4375fc47b209fcd75f

SHA512
7b02057cf4fd7b28eface22a492d6e4852a8835dd7314ee72bb5e023b56adcf96afc5976a596c35f555d26fa6c7e460f700f451ae9a56935e9df262bf2b8e892

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver7FA.tmp

Filesize
15KB

MD5
1a545d0052b581fbb2ab4c52133846bc

SHA1
62f3266a9b9925cd6d98658b92adec673cbe3dd3

SHA256
557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

SHA512
bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\SA5PKX1P\michatutil[1].js

Filesize
87KB

MD5
809844052a1950aeb40f781282bfd50d

SHA1
ea640231d8a96028e1ab12ef2ce075f4132c7f65

SHA256
315490ed250d44288893f8f21228a3404e01c84a8df91729ad2d93d9f2d28203

SHA512
79524773dd5e491a714f779273be25501cfe5f73daf74f5e7f72537e4b996c4deeffa45ab3294756038090168052ccfdf354ec4895d01d1cdd2ab9945087dec1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\SA5PKX1P\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\M776AF8M.cookie

Filesize
610B

MD5
68cfd23eafbcf1845277b04e15d0d6a4

SHA1
a0b29eeac3563739d8eedbe9d7443704d93e52d1

SHA256
40bac8f48baa6c0a53d0053b623622b6c885793d84bb01ab14a6ac6c8ba17351

SHA512
bc7ee2a5ef4ad63a4bad249229583b404d3f4d3183ab54b7e9ab313e7bd5d31edf79e7a535ab5f32daa73596c620302c9e345946fd85a4a48541b0ec6c8d0033

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCookies\VEDFPRP7.cookie

Filesize
647B

MD5
87fb1899f35cc4466b5095821b601ede

SHA1
1fcd11a2c9cc6efaf81d29a18b19f6dfcd02ead2

SHA256
425be4566bf1db95e2b1ecf318f3bf7701f1765f93e69564a3761966cc45dab2

SHA512
7c08c3d744c40173ad748e06a2f5347d3f4125ee9b694fcdce2e403775bdaf817b698bedf696fa2f60b42112e801c72919f31730d32c352af6c077eef8d3cbd9

Download Submit
C:\Users\Admin\Downloads\michatutil.js.t0fv0i7.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