hxxps://inbox[.]proofpoint[.]com/securemail/Main[.]html?tid=c5a86391-f840-49d1-aeed-3a76b23f2c38&mid=5a553f9b-8137-4e9e-9dfc-0956e43250b7

Analysis

max time kernel
210s
max time network
195s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
23/05/2023, 19:47

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General

Target

https://inbox.proofpoint.com/securemail/Main.html?tid=c5a86391-f840-49d1-aeed-3a76b23f2c38&mid=5a553f9b-8137-4e9e-9dfc-0956e43250b7

Score

1^/10

Malware Config

Signatures

Modifies Internet Explorer settings 1 TTPs 58 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\DOMStorage\registration.proofpoint.com	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{5D36BF27-F9B3-11ED-9EF6-4E89871AD1F5} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "840051599"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\Size = "10"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "849816893"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\proofpoint.com\NumberOfSubdomains = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\AskUser = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\Enable = "1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\proofpoint.com\Total = "15"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\Total\ = "12"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "391643403"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\International\CpMRU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\DOMStorage\proofpoint.com	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = e019fd34c08dd901	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\Total\ = "15"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\Factor = "20"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "839895733"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31034816"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31034816"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\proofpoint.com	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\International\CpMRU\InitHits = "100"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000004973a6175d228f4091f0c1d80acbc7d200000000020000000000106600000001000020000000b8db049a3645b4f8d40945a38eed653f3f0a9603cca280df1a007bdd72c72e59000000000e80000000020000200000003d77ddcce50f4843de76cff1d89f947723168a08756d826107b4a032065472bd2000000004f0c73815f21ab906074fbb0e298ffb3ff93f305e529fdc41f0eb641056a33740000000144963a8cb4380612bf91f5c29807813fe847df1092356e5e15004ee73db8cde6a7b08fe0268941e9b0d2d3683e7b9c444c43f4cf7ab7d5d935a2ca99857e7c0	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\registration.proofpoint.com\ = "15"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000004973a6175d228f4091f0c1d80acbc7d200000000020000000000106600000001000020000000498b7e4cf90c6384513922b0362ab24377dfa186f08bc8e0df3b7f6ea6b573a1000000000e80000000020000200000001dd40461fcdb6802d36b44d2daa2ca0f3a6a4e12098649b1f0ff991c6f2e16162000000077292236e45270e969fd727a16f6507dc5011bce75cbd1f906b0f986d4cc566d40000000064938a97628187a83911b80e31df85d34da1afebb46b0b7d7977373d4c940d2b907ca92bb928d18f600d9482a6000fd642a254b055a74592182c29e493c2a69	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\proofpoint.com\Total = "12"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\IntelliForms	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31034816"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\registration.proofpoint.com\ = "12"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = c0978e2cc08dd901	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3400	iexplore.exe

Suspicious use of SetWindowsHookEx 64 IoCs

pid	Process
3400	iexplore.exe
3400	iexplore.exe
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE
1556	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3400 wrote to memory of 1556	3400	iexplore.exe	85
PID 3400 wrote to memory of 1556	3400	iexplore.exe	85
PID 3400 wrote to memory of 1556	3400	iexplore.exe	85

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://inbox.proofpoint.com/securemail/Main.html?tid=c5a86391-f840-49d1-aeed-3a76b23f2c38&mid=5a553f9b-8137-4e9e-9dfc-0956e43250b7
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3400
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3400 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1556

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
404B

MD5
c71576bb818445daec6b4413c7aa4a24

SHA1
6a2bed9c1e530f4a656084a6c53cb335c0fa5d51

SHA256
f7db964a927663ea2efbe7927ac1732af212682da3bfd83dbf62f8268fb4a627

SHA512
867dbdf5538f0433f0aded32be3648d6a87e749cfe5d91215d8684ed220028d1219806639463d73dc47fb73ff5543242b6bfe8de841118e661d3705ead02525f

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\feo4h2u\imagestore.dat

Filesize
1020B

MD5
ca960120558112991b0cff0f598227df

SHA1
bdbbec0a86561c9cda7c81a3e57969c3cfe58a47

SHA256
8ffb0e6bb4ec9fbc0e0b0a1525ddc8d9238346b2e48f1d777fa553f96054cf62

SHA512
7e1901b1006d5f983ca16f68533b42d6537e966fcb7ccec34d0b14b4c5f7371a00156f9ca9a95edf7af454de05e59597e699baaf3897e3b94f776cbe89e416a2

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C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\feo4h2u\imagestore.dat

Filesize
2KB

MD5
220f58a8afa3129e913331b148c87c83

SHA1
a3c7a5e6456fc5d4ae73315fb9681a29ba95d425

SHA256
c8d975cf8498f0cdda1c319d6919f26931422ba082a15cb385530ccef0f6139b

SHA512
37b88fd09a2e7ad84000cd67a1cb84cbc4b1490d0f24ee5668f2c03ed9b4b964c2fba5d694bcf40dd4b6a33f863fb624804520b325b973f951258aa72ea5d2b2

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\8OI4IV75\favicon[1].ico

Filesize
1KB

MD5
41e678c00dd4c691148a662e092435c7

SHA1
ce1a29c7f5aa2350bae53602dcd77b99e14532d0

SHA256
38c0a7f97f70ec07534254e3a33998c2326568490fc0ad2183c9731da8cbd228

SHA512
dc868ab4fbd1556d66f7a716ffbbc0149f91a32275e03563790717ddf030d14a55c2dcaba03df65d77f767d6333f621c5f73fb8962946578bb0f384124bc6145

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\WPCK8CWE\favicon[1].ico

Filesize
894B

MD5
f5c7f1aa9aeb0dfa465c2fc4b66d8837

SHA1
f219efd04fca7aec4395d2910861329c164c9e22

SHA256
111f2d2e3de93de285f0aad6b78fcfb36bdb6d0eef4ce75491fe586e631e0c4c

SHA512
c95b7cd68ba2712279a0f471c721f277b053175aae5341d06ea354ea959b4a0371b2c962ed7b7a5cf0194823a93fd74a9c3b443f1ea718917f7a4b78e9d0213f

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\WPCK8CWE\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit