hxxps://presercist[.]blogspot[.]com/2022/10/presercist[.]html

Resubmissions

14/01/2023, 02:34

230114-c2fmgscf31 8

14/01/2023, 02:29

230114-cy2qjsgf56 3

Analysis

max time kernel
133s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
14/01/2023, 02:29

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General

Target

https://presercist.blogspot.com/2022/10/presercist.html

Score

1^/10

Malware Config

Signatures

Modifies Internet Explorer settings 1 TTPs 48 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2427981438"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{BC0FF539-93BB-11ED-AECB-4AA92575F981} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\google.com\NumberOfSubdomains = "1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 20579a96c827d901	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000054da1a0f12fe1947ac409f710d77fab80000000002000000000010660000000100002000000034f3eec2c1b10992f0cb7958074211f547bfbd6cbf2498dc3e509b071aa0b461000000000e80000000020000200000009bbcfeaeff40b38ba3154d06ea73f7b43238d6413c441d2c46aad3e0a3d19bc220000000cc373cece149565b633732c27aebd98351fd148558b88a8e8aeb1839a1fa6cd3400000008b6ae491cfa26feb7583d0a31d3d5f4bdcacf2980b004ed0cde4957cf6c9651bcbc35600ecedfed07076b307cc6dfdbf1153c0a50abf6445688cf2e71027259b	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2474542409"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 70ec7896c827d901	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31008712"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2427981438"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31008712"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DOMStorage\google.com	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\google.com	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\Total\ = "25"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\www.google.com\ = "25"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000054da1a0f12fe1947ac409f710d77fab8000000000200000000001066000000010000200000001a303522e43b9febfa8a520907dc819dfff1509324622862a8b3abc3fbd4da7d000000000e800000000200002000000081a7208dd35ee19396265bb0a9af82d5294810fa7b12c3c25ac33ffb1015abcd200000008ae3696300ddbe4883dd991ac374779b1cdc8c832a10b3c9b89feb7eb31fdeb8400000004d168c13aa5f29cc9880ad118ce8328e5cfbd094929eba7aa7fc746f349f83f8f392666b8995356eda2c1529562a148587fd90de077df8b11f636ef25ae758fc	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.google.com	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "380431983"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\google.com\Total = "25"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31008712"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1656	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1656	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1656	iexplore.exe
1656	iexplore.exe
2552	IEXPLORE.EXE
2552	IEXPLORE.EXE
2552	IEXPLORE.EXE
2552	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2552	1656	iexplore.exe	79
PID 1656 wrote to memory of 2552	1656	iexplore.exe	79
PID 1656 wrote to memory of 2552	1656	iexplore.exe	79

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://presercist.blogspot.com/2022/10/presercist.html
1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1656 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:2552

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
0a1ab72b82133a0c87c0a6149022e628

SHA1
60b207fac3528eb29800e3a5f63e20055c2be891

SHA256
4ec097e2cf4fdc41acefa791e3bcdcfd55ae9973d28c375572c357a654b43264

SHA512
a02f106bc7430b319d58015c11a616d760361e7a34d35afb8b6df215900a84feccdf63801d3c6f06d4ecc42021138580232581218a49cf47fe1835e82af52caa

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

Filesize
404B

MD5
83221a731b9f3fd43d81a62b14926840

SHA1
18a2389390febfb327a1453b15292655e5aea17b

SHA256
274f3a3d279c28f3b7f6fab75e1c3d9a5c6a4acb31f587d7403ea062746eab2e

SHA512
f52b989c7abab083390dc03dde2d36b18b75d91904f403b6c70bd5c035e1ce296253494bf9d6bec99f2a264dc0ea2530b02424716ae4ebc2125274c0a0d675a6

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\z2evvp3\imagestore.dat

Filesize
3KB

MD5
6342dd7208e8551c104f3da4701b3956

SHA1
b178e0e0214f5228aeb23d7a48a1d44a27f7b6a5

SHA256
7879e7232fd79b3940fbc8e094965add78741735137e393ae217e50f6a775db3

SHA512
995fe405b34971dd443f0a06e6505ad03df78f59f0f42799f238cccd28b811b91ca96e08b58b5b60d41395036830f677e8f867f0395d57ad6ae3f2be9cde6ea8

Download Submit