7faed001b410e4715a70888a709c4bcdb61095332c0ffc838a9f658951b6e434

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
20/06/2024, 03:14

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General

Target

uninst.exe
Size

67KB
MD5

33b80fbfd65984a74d29ad185b4a8481
SHA1

26b55f36e0ed2f1c1c970435ad54660106938220
SHA256

fbe5bf79539127476c8e624605c61964a7b03d1995cce950d0e34fff4acce6c0
SHA512

67821a4cafc22d0baec189b64ffe9aa069e120188242bd92c7c4326de8f7ffb4de03e1acd761cf2e9fd0ef26587f1e5aca80c621ba1ce4cabcd66eef70e696e8
SSDEEP

1536:shq3+uta99Hj25XvwLXJLilYRN6QcIwmHX:+stajHKBvYXJLYqTHX

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1952	Au_.exe

Loads dropped DLL 1 IoCs

pid	Process
3068	uninst.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral13/files/0x0003000000021246-2.dat	nsis_installer_1
behavioral13/files/0x0003000000021246-2.dat	nsis_installer_2

Modifies Internet Explorer settings 1 TTPs 34 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{47ED4B21-2EB3-11EF-99EB-F2F7F00EEB0D} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\SearchScopes\DownloadRetries = "3"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000587104b0d2f7da409208cf3ae9e77a2300000000020000000000106600000001000020000000f6d8ac3f3c47c937262f09a72f521b0217b2385edade3075c37d036f90d1e5c3000000000e8000000002000020000000f5ac4ddea7c0f6d6c1cdb8f5ba164e997df75cab5f33b8bb20bbb6c2b92648ce20000000ad3052b5921d8a0ed9b505d591ae4c5e435e59c283bc7dec74ac4989cdbf2e754000000093560ef92f92cdc6d11425cbb42b5d21fac09207a9966c8471b377fefa97d107ab90de85f1f0ab6d2983d52b85a55c6d78c3b000dc2b6720198ce61d9d66e537	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = d011962dc0c2da01	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\SearchScopes	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "425015191"	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2284	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2284	iexplore.exe
2284	iexplore.exe
1580	IEXPLORE.EXE
1580	IEXPLORE.EXE
1580	IEXPLORE.EXE
1580	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 1952	3068	uninst.exe	28
PID 3068 wrote to memory of 1952	3068	uninst.exe	28
PID 3068 wrote to memory of 1952	3068	uninst.exe	28
PID 3068 wrote to memory of 1952	3068	uninst.exe	28
PID 1952 wrote to memory of 2284	1952	Au_.exe	29
PID 1952 wrote to memory of 2284	1952	Au_.exe	29
PID 1952 wrote to memory of 2284	1952	Au_.exe	29
PID 1952 wrote to memory of 2284	1952	Au_.exe	29
PID 2284 wrote to memory of 1580	2284	iexplore.exe	31
PID 2284 wrote to memory of 1580	2284	iexplore.exe	31
PID 2284 wrote to memory of 1580	2284	iexplore.exe	31
PID 2284 wrote to memory of 1580	2284	iexplore.exe	31

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3068
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1952
- - C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" http://www.newasp.net/
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2284
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2284 CREDAT:275457 /prefetch:2
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:1580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
67KB

MD5
33b80fbfd65984a74d29ad185b4a8481

SHA1
26b55f36e0ed2f1c1c970435ad54660106938220

SHA256
fbe5bf79539127476c8e624605c61964a7b03d1995cce950d0e34fff4acce6c0

SHA512
67821a4cafc22d0baec189b64ffe9aa069e120188242bd92c7c4326de8f7ffb4de03e1acd761cf2e9fd0ef26587f1e5aca80c621ba1ce4cabcd66eef70e696e8

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