hxxp://go[.]microsoft[.]com/fwlink/?prd=11324&pver=4[.]5&sbp=AppLaunch2&plcid=0x409&o1=SHIM_NOVERSION_FOUND&version=(null)&processName=Squirrel[.]exe&platform=0009&osver=7&isServer=0&shimver=4[.]0[.]30319[.]0

General

Target

http://go.microsoft.com/fwlink/?prd=11324&pver=4.5&sbp=AppLaunch2&plcid=0x409&o1=SHIM_NOVERSION_FOUND&version=(null)&processName=Squirrel.exe&platform=0009&osver=7&isServer=0&shimver=4.0.30319.0

Score

5^/10

microsoft phishing

Malware Config

Signatures

Detected potential entity reuse from brand microsoft.
phishing microsoft

Modifies Internet Explorer settings 1 TTPs 15 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{7C6AAD88-C931-11ED-8FFF-DE61172DF127} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1804 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1804 iexplore.exe
1804 iexplore.exe
4012 IEXPLORE.EXE
4012 IEXPLORE.EXE
4012 IEXPLORE.EXE
4012 IEXPLORE.EXE

pid	process
1804	iexplore.exe

pid	process
1804	iexplore.exe
1804	iexplore.exe
4012	IEXPLORE.EXE
4012	IEXPLORE.EXE
4012	IEXPLORE.EXE
4012	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

iexplore.exe

description	pid	process	target process
PID 1804 wrote to memory of 4012	1804	iexplore.exe	IEXPLORE.EXE
PID 1804 wrote to memory of 4012	1804	iexplore.exe	IEXPLORE.EXE
PID 1804 wrote to memory of 4012	1804	iexplore.exe	IEXPLORE.EXE

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" http://go.microsoft.com/fwlink/?prd=11324&pver=4.5&sbp=AppLaunch2&plcid=0x409&o1=SHIM_NOVERSION_FOUND&version=(null)&processName=Squirrel.exe&platform=0009&osver=7&isServer=0&shimver=4.0.30319.0
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1804

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1804 CREDAT:17410 /prefetch:2
2⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4012

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\phzg4yt\imagestore.dat
Filesize
17KB

MD5
a72b75b06859072c76dcdabdf6fcb2d6

SHA1
57c3faad47ccee2b5ab18b4fcdec56ee5a5bf130

SHA256
8e0b58cb9b6c47b1156944bc7d2f51f6e9e16bbb0ef954df9a4cb736a198b6c8

SHA512
f0127e559a5a37ffe7b0e7358705d0e8e5059d6ce8bb758c1f940fa79e23d322a963c4063c3174f83b4efc82b6c0d8e56dd435b2f0e3d6326ee2c9ff2df12ee7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\phzg4yt\imagestore.dat
Filesize
17KB

MD5
a72b75b06859072c76dcdabdf6fcb2d6

SHA1
57c3faad47ccee2b5ab18b4fcdec56ee5a5bf130

SHA256
8e0b58cb9b6c47b1156944bc7d2f51f6e9e16bbb0ef954df9a4cb736a198b6c8

SHA512
f0127e559a5a37ffe7b0e7358705d0e8e5059d6ce8bb758c1f940fa79e23d322a963c4063c3174f83b4efc82b6c0d8e56dd435b2f0e3d6326ee2c9ff2df12ee7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\39K1WZBJ\favicon[1].ico
Filesize
16KB

MD5
12e3dac858061d088023b2bd48e2fa96

SHA1
e08ce1a144eceae0c3c2ea7a9d6fbc5658f24ce5

SHA256
90cdaf487716184e4034000935c605d1633926d348116d198f355a98b8c6cd21

SHA512
c5030c55a855e7a9e20e22f4c70bf1e0f3c558a9b7d501cfab6992ac2656ae5e41b050ccac541efa55f9603e0d349b247eb4912ee169d44044271789c719cd01

Download Submit

Analysis

Sharing