hxxps://polo[.]feathr[.]co/v1/analytics/crumb?flvr=email_link_click&t_id=6356b996c1fccc23a0986068&crv_id=6463f2e263e449c697f8129f&p_id=63f8eb47f677980531c7036d&cpn_id=6351a37c0a37531d83bf8948&rdr=hxxps://dw3pi3[.]codesandbox[.]io%2F%3Fregister=bWFuaXNoLmphZGVqYUByZW5pc2hhdy5jb20=

Resubmissions

23/05/2023, 12:42

230523-pxnhrafc54 1

23/05/2023, 09:26

230523-lelpnafe5y 1

23/05/2023, 09:22

230523-lb59wsfe5v 1

23/05/2023, 09:21

230523-lbt7mafe5t 1

Analysis

max time kernel
261s
max time network
265s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
23/05/2023, 09:26

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General

Target

https://polo.feathr.co/v1/analytics/crumb?flvr=email_link_click&t_id=6356b996c1fccc23a0986068&crv_id=6463f2e263e449c697f8129f&p_id=63f8eb47f677980531c7036d&cpn_id=6351a37c0a37531d83bf8948&rdr=https://dw3pi3.codesandbox.io%2F%3Fregister=bWFuaXNoLmphZGVqYUByZW5pc2hhdy5jb20=

Score

1^/10

Malware Config

Signatures

Modifies Internet Explorer settings 1 TTPs 39 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2382131478"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31034729"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2390881025"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000b8d3270c2270304b9414a5acf0f9276d0000000002000000000010660000000100002000000005cb89a6dd997185e82e44ec85ca6653ad4d4f8d285ad482187581458d8cc50a000000000e80000000020000200000006cfe0eadbc2cfc563f8a33d5bd6072b275335695fe010822326005cf966130f620000000bc8b79b47d400242e40172a24a57b9ba0d87477bf49e22cb2ffa792f96735652400000009e06699aef7e1fda94ef3740c6da58f740c300998192d1f6eb3734f1b5a737918c304a308a7e2d240f240f53a212d32d617007cd092fe1c3fb61a286469fa98c	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 209b1990698dd901	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{B92D8123-F95C-11ED-8227-7E499CA1C17D} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31034729"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31034729"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2382131478"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "391606191"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000b8d3270c2270304b9414a5acf0f9276d00000000020000000000106600000001000020000000faf2a561c4fbc813e642c94441d3b33657a6017e04aa61999db79a2e08e30c3b000000000e8000000002000020000000b93709a623b7089c013ba06968f28404f6091f1452e9353f985d7e7426c721f7200000006ca77ac40a6b109c16ea8f466b038af4395ef9eebe773ce89da99107c6c0c63940000000221ba03db47964035970054a0dd1392a9d43a89097c1b8dcb148652a0576e0efe050026efd90201f362ae50eb9be2f8e28fe50cf016037375cd67a8f9d0d483d	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = e0d93390698dd901	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4376	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4376	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4376	iexplore.exe
4376	iexplore.exe
4456	IEXPLORE.EXE
4456	IEXPLORE.EXE
4456	IEXPLORE.EXE
4456	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 4456	4376	iexplore.exe	81
PID 4376 wrote to memory of 4456	4376	iexplore.exe	81
PID 4376 wrote to memory of 4456	4376	iexplore.exe	81

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://polo.feathr.co/v1/analytics/crumb?flvr=email_link_click&t_id=6356b996c1fccc23a0986068&crv_id=6463f2e263e449c697f8129f&p_id=63f8eb47f677980531c7036d&cpn_id=6351a37c0a37531d83bf8948&rdr=https://dw3pi3.codesandbox.io%2F%3Fregister=bWFuaXNoLmphZGVqYUByZW5pc2hhdy5jb20=
1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4376 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:4456

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\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
94efe971fd70d9d426978045456a879d

SHA1
97f170ffda6afd79be0795ffcc37c7efd82ee801

SHA256
fcfaf64c502c0feb0175aa72247927eeecd556004302a20e09f6fdaa644504e6

SHA512
baf5e9e1e9bbbaef3cd6365ec2b1c71314c14d0acd5837c1975e71a374b9fe724035929b47fe5bf5aef5845ef6eb17b178f20460b115419094733dfc8a27799c

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

Filesize
434B

MD5
e37d8aca050e50b95698a42f103475bb

SHA1
098e3d5416ef37a90e2675c2943186a37fe890c7

SHA256
82094c6b1e5f325aefdc12f40f2f0b391e51cf85860da13a80a7ca41b3ba970b

SHA512
bcc19f192b0b369f55cc98f20834f9e4d1031b7e891625cbce3291b35e0feb8a8598a52eeba377f77510da41a7058e06c26e97a2e0255055beb2382eff4f6f8d

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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\cz9baam\imagestore.dat

Filesize
3KB

MD5
1b3fd97d2e0789a0eceef5b4c6381892

SHA1
bdbc068fd496a6be906bf42e304428c19e32c584

SHA256
5a95ee311fa21cf2f7209cf6450f08961965926f3b412a8e126d968ff4238ceb

SHA512
1faad68f0133fadffdfd8f2b8a37bda999a5aa5e1e5a9cab923256a1466ce35ef5a7ca0732983af443a5ef47d22a97cd8018f9f370d272690f50ab795253f22f

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\GPVLIKPI\favicon[1].ico

Filesize
2KB

MD5
fd8d37896781cee6e67781d13f32e69b

SHA1
afd5fb05ea0942bf9a9ae0f01d9edeef967b1cd5

SHA256
0d73291f77484d427869f38962b399ea359c9df97ec190f143ee113f321f4943

SHA512
367476aa2092fc75337b8ce8c0a1cad0d0d5b1add77b2570370a5acece9efe62358ce4c54b10094917363728dcc8e31ebe82c28901ad2285345faf38eaeca9bd

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RPW4GWWI\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit