hxxps://linkprotect[.]cudasvc[.]com/url?a=https%3a%2f%2fwww[.]yumpu[.]com%2fen%2fdocument%2fview%2f66264683%2faviation-weather-4th-edition-peter-f-lester&c=E,1,XVQqJi7Px__aLXiDFTJPPrgrl_cg5YBuT1KyNAWe0YscwwTVtOEUeiJZzxrUMBg2GR3dXo-K_Jv8VCOc6mOIpQaK7JzkkXhodW9exTPzuvEhYxa8&typo=1

Analysis

max time kernel
131s
max time network
134s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
14-09-2022 00:53

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General

Target

https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.yumpu.com%2fen%2fdocument%2fview%2f66264683%2faviation-weather-4th-edition-peter-f-lester&c=E,1,XVQqJi7Px__aLXiDFTJPPrgrl_cg5YBuT1KyNAWe0YscwwTVtOEUeiJZzxrUMBg2GR3dXo-K_Jv8VCOc6mOIpQaK7JzkkXhodW9exTPzuvEhYxa8&typo=1

Score

1^/10

Malware Config

Signatures

Modifies Internet Explorer settings 1 TTPs 64 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\yumpu.com\Total = "79"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\yumpu.com\Total = "197"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.yumpu.com\ = "158"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.yumpu.com\ = "275"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\yumpu.com\Total = "40"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\yumpu.com\Total = "204"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total\ = "40"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\yumpu.com\NumberOfSubdomains = "1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total\ = "79"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = f04b0d7cd4c7d801	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "369881774"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000048ca5449a4d21846ba8a995ea0abd35a00000000020000000000106600000001000020000000bb1cc05875139043a4ff071790b2ec71927430fb163dc02306b0a18b9b5d4dfa000000000e80000000020000200000005eb34f3c83dcc3fae31ef33cd1bd5062d3a5d796d780e4ceaeebdea49e01c01b20000000ee5034cdcee6db1cbff21d733b5b3f2e3b08668ebf601ad730f075df3fbd02da40000000efbc9c182a85404b8ed2c99c6e05a2865938104920087ab1a69d4674e1ccae5d869dd9e7fdc1824cef5161fd6c70b19d217dfad80b89880bfbb1e5444fa95619	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.yumpu.com\ = "40"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.yumpu.com	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\yumpu.com	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\yumpu.com\Total = "158"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\yumpu.com\Total = "198"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total\ = "158"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.yumpu.com\ = "197"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.yumpu.com\ = "204"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\yumpu.com\Total = "275"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.yumpu.com\ = "79"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total\ = "198"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{9F77A401-33C7-11ED-BB74-42A406F29BB0} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total\ = "119"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.yumpu.com\ = "119"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total\ = "197"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\yumpu.com\Total = "119"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total\ = "204"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.yumpu.com\ = "198"	IEXPLORE.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1944	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1600	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1600	iexplore.exe
1600	iexplore.exe
1944	IEXPLORE.EXE
1944	IEXPLORE.EXE
1944	IEXPLORE.EXE
1944	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 1944	1600	iexplore.exe	28
PID 1600 wrote to memory of 1944	1600	iexplore.exe	28
PID 1600 wrote to memory of 1944	1600	iexplore.exe	28
PID 1600 wrote to memory of 1944	1600	iexplore.exe	28

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.yumpu.com%2fen%2fdocument%2fview%2f66264683%2faviation-weather-4th-edition-peter-f-lester&c=E,1,XVQqJi7Px__aLXiDFTJPPrgrl_cg5YBuT1KyNAWe0YscwwTVtOEUeiJZzxrUMBg2GR3dXo-K_Jv8VCOc6mOIpQaK7JzkkXhodW9exTPzuvEhYxa8&typo=1
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1600 CREDAT:275457 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:1944

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
8a30b5b7c61727d6198a63c152c4e065

SHA1
e3e89ef40974ecce029279e4c5838257fdb39b0b

SHA256
4a083ab2c751447f5035b0d82bcc344860ffb3ae2ae9e384c37426e95b188b23

SHA512
622f1a7fe30db46313b4c88aa096a074df237f57b1019fa7bf7d58f4cfd6100a9fa7f3c703c55c5a28d71da52021a23b6a7947fc2ad467e0660df24f25d7bbc1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\309axvf\imagestore.dat

Filesize
5KB

MD5
1aa9781be64cc32a307e34c52990509f

SHA1
d0bd549746557bf53eca54c1a09a3111d7ce7a44

SHA256
2fb731b55610e7b6efe93e142bc80695bc4c857adf0fac0499eca600fad0710f

SHA512
99e134c4e36701336541ac9395b66b080d68a16bb6039cf15bcf870dbe7a65493a6bd64026c6461a612c5063be7c4a7343c3fac171851b82c30b72be143c7852

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\6WF2EV3U.txt

Filesize
603B

MD5
252ede4070db5138aa9ce20f31526a6a

SHA1
3d49d748324d4a71acc5f860f46de7ce4522d5f9

SHA256
b10a5185b70c2daf856c2613b2c09ffac3123d122f7cda09047d833c1326fa4d

SHA512
65850ce3a21cc7620bae6b44fa1e20a8cee510285402c1758e05578e9f3d2c004d3201c86e0cdba4706dd69d710a433deb0914e9ba2b692432ecfe091d58f5c1

Download Submit