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
118s
max time network
144s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
14-01-2023 02:29

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General

Target

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

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer Phishing Filter 1 TTPs 2 IoCs

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PhishingFilter	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = 48efb34cc027d901	iexplore.exe

Modifies Internet Explorer settings 1 TTPs 44 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\google.com	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb010000002158dd6af51cae4fb1b850252096024400000000020000000000106600000001000020000000481d15e4dd3d69dadb56c25bbad17e36e521f3a56af0da58e9d3a514bd82dd35000000000e8000000002000020000000a20502b2aff996a6f85da3ec197164e5760b8491e87437b8ca8ace8655b3218620000000d0fb338a8c84525e93396cdcfdc30ed43639e64d308ee945e02b7bf00e51c77d40000000fe5f32653c4ae6ad946b2cf574994777e4be50a1a8aad2c63bc12a96f0ca768040e77d8c3f42b37084dc95df66809cd0682ed1983100bed2a18afc73f226e094	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.google.com\ = "21"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\google.com\Total = "21"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{5A62D911-93B3-11ED-B7DD-7E0305A911F0} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total\ = "21"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 50a0cc34c027d901	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\google.com\NumberOfSubdomains = "1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DOMStorage\www.google.com	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "380428379"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1220	IEXPLORE.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeRestorePrivilege	360	7zG.exe
Token: 35	360	7zG.exe
Token: SeSecurityPrivilege	360	7zG.exe
Token: SeSecurityPrivilege	360	7zG.exe

Suspicious use of FindShellTrayWindow 5 IoCs

pid	Process
1256	iexplore.exe
1256	iexplore.exe
360	7zG.exe
360	7zG.exe
360	7zG.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1256	iexplore.exe
1256	iexplore.exe
1220	IEXPLORE.EXE
1220	IEXPLORE.EXE
1220	IEXPLORE.EXE
1220	IEXPLORE.EXE
1220	IEXPLORE.EXE
1220	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1256 wrote to memory of 1220	1256	iexplore.exe	27
PID 1256 wrote to memory of 1220	1256	iexplore.exe	27
PID 1256 wrote to memory of 1220	1256	iexplore.exe	27
PID 1256 wrote to memory of 1220	1256	iexplore.exe	27

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 Phishing Filter
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1256 CREDAT:275457 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:1220

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Downloads\Presercist.rar
1⤵
- Modifies registry class
PID:2008

C:\Program Files\7-Zip\7zG.exe
"C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\Downloads\" -an -ai#7zMap551:82:7zEvent9222
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:360

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
344B

MD5
2c9d3dd211c138707b462297cac70f73

SHA1
9935585d56bf63154be2fe02f53760ee7faf8ffa

SHA256
7b885e0a2fbd7dfbd4f7c3cc4afce8135dbdeead81be8625ec1c30a39aff7e97

SHA512
8e525b772d63ccb4cbef564a402078ce5d3f6dc3842944b3a380ac372b7d533e9aa00c83def3fcb3947993c705cd82328d4490692cb7d262d0de67fa245f4133

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\309axvf\imagestore.dat

Filesize
8KB

MD5
f0bd624b9b206ddf8cb89bd06661cf79

SHA1
ca5f1c254c1a97b5925961f0222294ab8b007acc

SHA256
bae7b435aee17d737d101d5ef9652445f31316d7ffd41396d23bbbe565c1704c

SHA512
739c78db35fc6fed796e32345cd0ad932389945f567057bf244648c9067aff85471f53b21d6bea5a72b1229c1f7086d0152b076eff1e58f1be019599fc4f5cc7

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\0WICA1FA.txt

Filesize
608B

MD5
0fcde7d05ed3c49ec70e00e0267cdc34

SHA1
8f3fad816a8cb2de761423c2bcfaf8ff7adb44a8

SHA256
42891b9cd3f29524223aa5f411d44c12bf85d15b9dfdc30b6d78821eb9bff244

SHA512
5b92bb65a3b5f67903b223d6ed7e1a9dd423e2e8e8dede657675268b4b1b562c3b5d5aa2c0e5863bcc9450a0fdb73a1e9480548c1637396eac43d0fabadc76bf

Download Submit
C:\Users\Admin\Downloads\Presercist.rar.7aoj4gv.partial

Filesize
21.6MB

MD5
4869fc57cfb4a974f4266893da3ad114

SHA1
37fef8fed4be2d505bc1594638d678fec8b58a9d

SHA256
d79e71678bc839cd3063a8d65cc6c66a041118ee1eb820f334036c0f2d88371d

SHA512
32fe5c1d45330e84caf0da09f126b34b39c39e38d9d340f639105f3b6207f85c14c381275fde8b375a1ed4d6ee8e98a012f3be6d5d971d6e43883ced18d4f81a

Download Submit
memory/2008-58-0x000007FEFBD91000-0x000007FEFBD93000-memory.dmp

Filesize
8KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads