hxxps://cloud[.]bluestacks[.]com/api/getdownloadnow?platform=win&win_version=10&mac_version=&client_uuid=b3eb443b-13c1-44ca-bd20-bdfd87b82d02&app_pkg=&platform_cloud=%257B%2522description%2522%253A%2522Chrome%2520108[.]0[.]0[.]0%2520on%2520Windows%252010%252064-bit%2522%252C%2522layout%2522%253A%2522Blink%2522%252C%2522manufacturer%2522%253Anull%252C%2522name%2522%253A%2522Chrome%2522%252C%2522prerelease%2522%253Anull%252C%2522product%2522%253Anull%252C%2522ua%2522%253A%2522Mozilla%252F5[.]0%2520(Windows%2520NT%252010[.]0%253B%2520Win64%253B%2520x64)%2520AppleWebKit%252F537[.]36%2520(KHTML%252C%2520like%2520Gecko)%2520Chrome%252F108[.]0[.]0[.]0%2520Safari%252F537[.]36%2522%252C%2522version%2522%253A%2522108[.]0[.]0[.]0%2522%252C%2522os%2522%253A%257B%2522architecture%2522%253A64%252C%2522family%2522%253A%2522Windows%2522%252C%2522version%2522%253A%252210%2522%257D%257D&preferred_lang=es&utm_source=&utm_medium=&gaCookie=&gclid=&clickid=&msclkid=&affiliateId=&offerId=&transaction_id=&aff_sub=&first_landing_page=&referrer=&download_page_referrer=&utm_campaign=homepage-dl-button-es&user_id=&exit_utm_campaign=homepage-dl-button-es&incompatible=false&bluestacks_version=bs5&device_memory=4&device_cpu_cores=4

Analysis

max time kernel
69s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/01/2023, 14:08

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General

Target

https://cloud.bluestacks.com/api/getdownloadnow?platform=win&win_version=10&mac_version=&client_uuid=b3eb443b-13c1-44ca-bd20-bdfd87b82d02&app_pkg=&platform_cloud=%257B%2522description%2522%253A%2522Chrome%2520108.0.0.0%2520on%2520Windows%252010%252064-bit%2522%252C%2522layout%2522%253A%2522Blink%2522%252C%2522manufacturer%2522%253Anull%252C%2522name%2522%253A%2522Chrome%2522%252C%2522prerelease%2522%253Anull%252C%2522product%2522%253Anull%252C%2522ua%2522%253A%2522Mozilla%252F5.0%2520(Windows%2520NT%252010.0%253B%2520Win64%253B%2520x64)%2520AppleWebKit%252F537.36%2520(KHTML%252C%2520like%2520Gecko)%2520Chrome%252F108.0.0.0%2520Safari%252F537.36%2522%252C%2522version%2522%253A%2522108.0.0.0%2522%252C%2522os%2522%253A%257B%2522architecture%2522%253A64%252C%2522family%2522%253A%2522Windows%2522%252C%2522version%2522%253A%252210%2522%257D%257D&preferred_lang=es&utm_source=&utm_medium=&gaCookie=&gclid=&clickid=&msclkid=&affiliateId=&offerId=&transaction_id=&aff_sub=&first_landing_page=&referrer=&download_page_referrer=&utm_campaign=homepage-dl-button-es&user_id=&exit_utm_campaign=homepage-dl-button-es&incompatible=false&bluestacks_version=bs5&device_memory=4&device_cpu_cores=4

Score

8^/10

Malware Config

Signatures

Downloads MZ/PE file

Modifies Internet Explorer Phishing Filter 1 TTPs 2 IoCs

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\PhishingFilter	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = 467899b2bcaed801	iexplore.exe

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\RepId	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31007402"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "194818435"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{36D62B17-8E9D-11ED-AECB-E62D9FD3CB0B} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "223880188"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "379869117"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31007402"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31007402"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "194818435"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\RepId\PublicId = "{6D7D5DE1-9C8E-4BC9-B7C5-A530CB2C719F}"	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
884	iexplore.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
884	iexplore.exe
884	iexplore.exe
680	IEXPLORE.EXE
680	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 884 wrote to memory of 680	884	iexplore.exe	81
PID 884 wrote to memory of 680	884	iexplore.exe	81
PID 884 wrote to memory of 680	884	iexplore.exe	81

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://cloud.bluestacks.com/api/getdownloadnow?platform=win&win_version=10&mac_version=&client_uuid=b3eb443b-13c1-44ca-bd20-bdfd87b82d02&app_pkg=&platform_cloud=%257B%2522description%2522%253A%2522Chrome%2520108.0.0.0%2520on%2520Windows%252010%252064-bit%2522%252C%2522layout%2522%253A%2522Blink%2522%252C%2522manufacturer%2522%253Anull%252C%2522name%2522%253A%2522Chrome%2522%252C%2522prerelease%2522%253Anull%252C%2522product%2522%253Anull%252C%2522ua%2522%253A%2522Mozilla%252F5.0%2520(Windows%2520NT%252010.0%253B%2520Win64%253B%2520x64)%2520AppleWebKit%252F537.36%2520(KHTML%252C%2520like%2520Gecko)%2520Chrome%252F108.0.0.0%2520Safari%252F537.36%2522%252C%2522version%2522%253A%2522108.0.0.0%2522%252C%2522os%2522%253A%257B%2522architecture%2522%253A64%252C%2522family%2522%253A%2522Windows%2522%252C%2522version%2522%253A%252210%2522%257D%257D&preferred_lang=es&utm_source=&utm_medium=&gaCookie=&gclid=&clickid=&msclkid=&affiliateId=&offerId=&transaction_id=&aff_sub=&first_landing_page=&referrer=&download_page_referrer=&utm_campaign=homepage-dl-button-es&user_id=&exit_utm_campaign=homepage-dl-button-es&incompatible=false&bluestacks_version=bs5&device_memory=4&device_cpu_cores=4
1⤵
- Modifies Internet Explorer Phishing Filter
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:884
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:884 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:680

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
471B

MD5
a84659e00d09b65942dd6319948f4b09

SHA1
5019ed50b4dc83eb14ee8f741b7fb78b0cd32483

SHA256
5883ea503ab00c9fa511bb6ba9f0367ef9e37951f681ed647d76e61646946708

SHA512
974b291e90ddf2bea9436bfb1ba6649530a29d1611885fc909e41a99f47211414c9cb86d13cbd30229274da1ca35533ad0da2c695499df77036cfe0b096ca404

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

Filesize
434B

MD5
38d5ba9a71b19528f39aeac4c9be9fbe

SHA1
8da6544d0e48f2b07675bac36b60a91cb62d07eb

SHA256
49534fcee31b7f66a1c51a2e527537dcb02bb44fec879368ae95d99f07efd3f9

SHA512
92b54ef943f33b9846e2fa10a48190edbabc85d97b4a58b2d5ffebceaebc25f461a7e318ff5f648bf74ece96c78689af003aceb94a8209c655d9cbb7987aec1a

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads