hxxps://www[.]docusign[.]net/Signing/EmailStart[.]aspx?a=1c618f3d-d2b3-4133-b2b6-2dc490c289c7&acct=b76041a9-42de-4c83-a80a-cd295cb004d5&er=cb31b637-3f4e-444c-9d59-a04a1ded3aab

Analysis

max time kernel
67s
max time network
134s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
26-10-2022 15:59

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General

Target

https://www.docusign.net/Signing/EmailStart.aspx?a=1c618f3d-d2b3-4133-b2b6-2dc490c289c7&acct=b76041a9-42de-4c83-a80a-cd295cb004d5&er=cb31b637-3f4e-444c-9d59-a04a1ded3aab

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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DOMStorage\docusign.net\NumberOfSubdomains = "1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373572147"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DOMStorage\docusign.net	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{F12BAB01-5557-11ED-A993-42FEA5F7B9B2} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DOMStorage	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000e0f3d159765a7f43b6bf060b4b70c9a300000000020000000000106600000001000020000000e90cee16a5f0a2bdfecb69186c903cb24e030bc487dd5e0017ee27ae6d12f32b000000000e80000000020000200000009bfeafeebfad0be15f96f662a6e55150e7fa577492a8088714d06ebc697cabbf200000002736c50b0f2b577c1d63127136c4f6e314ecc8a0666864bf7c031fc022a15d7240000000594305b9d63ca1a957ec3d1c9bf8abeb47c8e61aa680bde216c3ff4804ecac4795d83751471acd47f31019c0e3355ffc8c9c3a2ccac4365a15fe55e9788d4925	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = e0cfedcf64e9d801	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1964	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1964	iexplore.exe
1964	iexplore.exe
1424	IEXPLORE.EXE
1424	IEXPLORE.EXE
1424	IEXPLORE.EXE
1424	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 1424	1964	iexplore.exe	29
PID 1964 wrote to memory of 1424	1964	iexplore.exe	29
PID 1964 wrote to memory of 1424	1964	iexplore.exe	29
PID 1964 wrote to memory of 1424	1964	iexplore.exe	29

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://www.docusign.net/Signing/EmailStart.aspx?a=1c618f3d-d2b3-4133-b2b6-2dc490c289c7&acct=b76041a9-42de-4c83-a80a-cd295cb004d5&er=cb31b637-3f4e-444c-9d59-a04a1ded3aab
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1964 CREDAT:275457 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1424

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\94308059B57B3142E455B38A6EB92015

Filesize
61KB

MD5
3dcf580a93972319e82cafbc047d34d5

SHA1
8528d2a1363e5de77dc3b1142850e51ead0f4b6b

SHA256
40810e31f1b69075c727e6d557f9614d5880112895ff6f4df1767e87ae5640d1

SHA512
98384be7218340f95dae88d1cb865f23a0b4e12855beb6e74a3752274c9b4c601e493864db777bca677a370d0a9dbffd68d94898a82014537f3a801cce839c42

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

Filesize
342B

MD5
5d80cd9e96f17cfb41223c0298383d59

SHA1
8211538416b326ade0f12511d542583775c982ef

SHA256
67f85c394dc147c4a13b6dd54bae5f8418bc50e6b246f2402847fba01ddd4692

SHA512
71cccb36488950fc598e8bdde6f72aa5eb6dfe361649e06fb5313f7a9e10c87f4348a92401eff70f528b5f94705d8724cc4c68251a890da372787f52a9dc1b36

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\tcz8fqz\imagestore.dat

Filesize
5KB

MD5
f59b52f7fb458598a6c0e87f82d039bb

SHA1
06d62ba5ddbf3b54b7c7de711f8985775be178d2

SHA256
05d5bef20e1f129cbcca19fa29101b0436a4c8bfb02b895d72d35669f9f0eba2

SHA512
94e5776691f4e9e44f12589030749405c56c519c90063e018c6a67d440b59febd7e91b571c0d90d827d6ae8240b5515086377b6207ef940259f20a776d86144e

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

Filesize
608B

MD5
b4fadea0e0d85b291bd73af5b6feb46c

SHA1
901c094b71bcc1a39640704783e9c7248eb92c32

SHA256
46eac1404aa181d4e713bea19f05ea5514d7ab7894f92b0f091ca7285120dd95

SHA512
5caf7925ffa702369e5b02f6d9b0bdc19e3621a7975890d828f366d44e29770da8fcab0b80df082a880249f504c4b1f757a377f23eb371191ee79da20d94b1c0

Download Submit