hxxp://www[.]nexxt[.]com/common/track/trackgeneral[.]asp?tcid=106ttid=2cid=146408910emid=18977&tv1=Unsubscribetl2=3Dsdtv2=30200224%2B14%3A08bydal=truesid=EFC4BF1A-2DD6-4735-A7FC-6285ED6C4AACintsti=&red=https%3A%2F%2Fcahyaasri[.]com%2Fnew%2Fauth%2FLzpu%2F%2F%2F%2FZGF3bi53aWViZUB0YXFhLmNh

Analysis

max time kernel
143s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
10/07/2023, 06:02

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General

Target

http://www.nexxt.com/common/track/trackgeneral.asp?tcid=106ttid=2cid=146408910emid=18977&tv1=Unsubscribetl2=3Dsdtv2=30200224%2B14%3A08bydal=truesid=EFC4BF1A-2DD6-4735-A7FC-6285ED6C4AACintsti=&red=https%3A%2F%2Fcahyaasri.com%2Fnew%2Fauth%2FLzpu%2F%2F%2F%2FZGF3bi53aWViZUB0YXFhLmNh

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-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "767592424"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 60f2b92ff4b2d901	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "395733923"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000000929439ee50e204ba4f4b605da59efba0000000002000000000010660000000100002000000068f8d0de78a66e6678c7bb0e8838384148c5b616d73bbee1fb9396f9f71c4d5c000000000e80000000020000200000005436d9aa6c986e10c4f6f0d1216edeff0493e494abec67a42aacde48e4f5a78720000000100268c0b6962e2546e6b3f916f3d957a74bd008c427414d2de2e447fd4b42ae400000001afbf186cd1ebd28c7e4e8d65cb7cf21c68897c1fc673da9b850251c088aa365b03bd225d3d0b76660add92c71a6deefa0baa1b9d3575fa9916501ab3b8cb707	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31044340"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{5937D9A8-1EE7-11EE-AF72-52929AE94110} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "778217398"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "767592424"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31044340"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000000929439ee50e204ba4f4b605da59efba000000000200000000001066000000010000200000000bffafa19e0e6f14210396cfab425d12088829e6674de6195c535d32c95507f5000000000e8000000002000020000000e4b3814114b941b706554728c2040acc67fed39f6d19ce5152b7a969af1820d0200000008a4a07e43cf846bb471a1ba64ef825f844d6ee198f00358542cd08ea35c1bb734000000056c295ebcbcf7ee3acfc06790638aacc13278f22a2589bf60c266d278f1d46f851042cd14224fcda9f4b4745cc5a659f1b281755ff534db9cfe4794ed9330fc8	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31044340"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1420546310-613437930-2990200354-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = a0b39f2ff4b2d901	iexplore.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3116	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3116	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3116	iexplore.exe
3116	iexplore.exe
3784	IEXPLORE.EXE
3784	IEXPLORE.EXE
3784	IEXPLORE.EXE
3784	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3116 wrote to memory of 3784	3116	iexplore.exe	84
PID 3116 wrote to memory of 3784	3116	iexplore.exe	84
PID 3116 wrote to memory of 3784	3116	iexplore.exe	84

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" http://www.nexxt.com/common/track/trackgeneral.asp?tcid=106ttid=2cid=146408910emid=18977&tv1=Unsubscribetl2=3Dsdtv2=30200224%2B14%3A08bydal=truesid=EFC4BF1A-2DD6-4735-A7FC-6285ED6C4AACintsti=&red=https%3A%2F%2Fcahyaasri.com%2Fnew%2Fauth%2FLzpu%2F%2F%2F%2FZGF3bi53aWViZUB0YXFhLmNh
1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3116
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3116 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:3784

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\Local\Microsoft\Internet Explorer\imagestore\nd19axg\imagestore.dat

Filesize
1KB

MD5
4a6185f8914884fd85283da12a07cfa6

SHA1
a117eed20fe96e942560272b6376c4117c5a4263

SHA256
7aaf3652ff5bab3608838265cc89aaf2e7cde6eff65d3bd1e17f342fef747376

SHA512
34ebe7886aa9d51a89c72ad575bccde88f3b34484fbc01e5b04f22034a207ea610e24e6f9279fac7079122adb04ebe81cd97aaf232edf7d66a8701ebc3547a89

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\1ERYC57B\favicon[2].ico

Filesize
1KB

MD5
c3abfb4cb652c2cd1e68ddf666313bcd

SHA1
9d04e04f8ab4e974bbc7aa9a458883a4495d89e7

SHA256
f6675eda9d7d455c45d070bf3d893e45d89b9d9b5680256b64b497158e1baa69

SHA512
cf6e25441db3fa2ba899c078f3f18a1e5a4fbc5e4d62b2e81a32b9756e92c6b33654fad0d24021d1b115406615e5b6146ca57b067a87399dd571eca5dbde3699

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\ZYPP69YI\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

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