918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f

Analysis

max time kernel
151s
max time network
154s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/12/2022, 01:33

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General

Target

918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe
Size

112KB
MD5

4674566e25e78bb4f4ab7a8a1c86f9cb
SHA1

adb83767f85dc9e6270ca934c51bd87203816086
SHA256

918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f
SHA512

9e5ba5a481f7f4c7671615b1861f077976e76a87467b5fe1a45556b68b2e78265ae9cf1a484bd83f3f1ff4f8f56cae1edfad864f80201f80e81d9ae1c99bf318
SSDEEP

1536:kr4vEtHYKKSYP8mxBsEQRn2BkRd4Kp1xtHYKKS8D:kReKKSYh4Eimym2xeKKS8D

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1772	ksoft.exe

Deletes itself 1 IoCs

pid	Process
1984	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe
1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\sytre\ksoft.exe	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe
File opened for modification	C:\Program Files\system\yy.dll	ksoft.exe
File created	C:\Program Files\ty\tem.vbs	ksoft.exe

Modifies Internet Explorer settings 1 TTPs 33 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000002d00c8d6138c740a3f86ef7106dbf9200000000020000000000106600000001000020000000453b823e42570cae267d695160e9127d786c2421af1e91f872ead456ca74c34e000000000e80000000020000200000002d5a5723c46975c2a7c0a230de49442217783209a6d7103c950213e90edf2a4720000000912abdd96f764e12c143847b9a7cb0ca42a775ac8106c73a0666ba2eb78e4637400000006482319be2678c71a1fd1b10eca5b250af4f74f758185fa3f0f1136e153ca97ab4ef84825c7e3c8d6cff96f013d25d675a966879fa60aa2c6ca1b9459d6214f5	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "377550016"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{99CA1391-7985-11ED-8C11-42FEA5F7B9B2} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 103f856f920dd901	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	ksoft.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{603D3801-BD81-11d0-A3A5-00C04FD706EC}	ksoft.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{603D3801-BD81-11d0-A3A5-00C04FD706EC}\InProcServer32	ksoft.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
944	iexplore.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe
1772	ksoft.exe
944	iexplore.exe
944	iexplore.exe
1816	IEXPLORE.EXE
1816	IEXPLORE.EXE
1816	IEXPLORE.EXE
1816	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 1772	1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe	26
PID 1184 wrote to memory of 1772	1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe	26
PID 1184 wrote to memory of 1772	1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe	26
PID 1184 wrote to memory of 1772	1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe	26
PID 944 wrote to memory of 1816	944	iexplore.exe	29
PID 944 wrote to memory of 1816	944	iexplore.exe	29
PID 944 wrote to memory of 1816	944	iexplore.exe	29
PID 944 wrote to memory of 1816	944	iexplore.exe	29
PID 1184 wrote to memory of 1984	1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe	31
PID 1184 wrote to memory of 1984	1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe	31
PID 1184 wrote to memory of 1984	1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe	31
PID 1184 wrote to memory of 1984	1184	918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe	31

C:\Users\Admin\AppData\Local\Temp\918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe
"C:\Users\Admin\AppData\Local\Temp\918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Program Files\sytre\ksoft.exe
  "C:\Program Files\sytre\ksoft.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  PID:1772
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del "C:\Users\Admin\AppData\Local\Temp\918C7C~1.EXE"
  2⤵
  - Deletes itself
  PID:1984

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:944
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:944 CREDAT:275457 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1816

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:\Program Files\sytre\ksoft.exe

Filesize
112KB

MD5
4674566e25e78bb4f4ab7a8a1c86f9cb

SHA1
adb83767f85dc9e6270ca934c51bd87203816086

SHA256
918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f

SHA512
9e5ba5a481f7f4c7671615b1861f077976e76a87467b5fe1a45556b68b2e78265ae9cf1a484bd83f3f1ff4f8f56cae1edfad864f80201f80e81d9ae1c99bf318

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\41Q1OE7B.txt

Filesize
606B

MD5
9c196688cd0c9cf998898dafa663e4fa

SHA1
4ec4c543ccb335381840e95af671e3fbef1c1806

SHA256
1e83e23394df0f4694b9fbf711d586089f61a8aa48d7d8cc7c95ab8eb1e01791

SHA512
4560f965041e27f8b6738c86edf7f9d6e7245c2f762cf1cedb8cf72278c856d8a7b36035e34208f238ec8ebc008d2e5cb7d0d76b325f58dce91c050a52cd27e7

Download Submit
\Program Files\sytre\ksoft.exe

Filesize
112KB

MD5
4674566e25e78bb4f4ab7a8a1c86f9cb

SHA1
adb83767f85dc9e6270ca934c51bd87203816086

SHA256
918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f

SHA512
9e5ba5a481f7f4c7671615b1861f077976e76a87467b5fe1a45556b68b2e78265ae9cf1a484bd83f3f1ff4f8f56cae1edfad864f80201f80e81d9ae1c99bf318

Download Submit
\Program Files\sytre\ksoft.exe

Filesize
112KB

MD5
4674566e25e78bb4f4ab7a8a1c86f9cb

SHA1
adb83767f85dc9e6270ca934c51bd87203816086

SHA256
918c7c0359cf05bf076302540d40c4131ac09fbbf2d734b6119a4f5cc2397a5f

SHA512
9e5ba5a481f7f4c7671615b1861f077976e76a87467b5fe1a45556b68b2e78265ae9cf1a484bd83f3f1ff4f8f56cae1edfad864f80201f80e81d9ae1c99bf318

Download Submit
memory/1772-62-0x0000000074BB1000-0x0000000074BB3000-memory.dmp

Filesize
8KB

Download