hxxps://r20[.]rs6[.]net/tn[.]jsp?f=001f5R_iJCwaFy49KkbzzyyG4Gc6gyTfnyF-0mhORlSg_GR3SvOTDN03S6edK3VV6C0V4MuVMDIimdpOdcObWyHN-9YeKxYaaDoTevx2CPeo0wb3guQeyhvDtU0c5-W4hDR1KaPfzoLugC5ji5JLZXX9Q==&c=&ch=/#kfc2lsdmlhLnNhYXZlZHJhQGNoZW10cmVhdC5jb20=

General

Target

https://r20.rs6.net/tn.jsp?f=001f5R_iJCwaFy49KkbzzyyG4Gc6gyTfnyF-0mhORlSg_GR3SvOTDN03S6edK3VV6C0V4MuVMDIimdpOdcObWyHN-9YeKxYaaDoTevx2CPeo0wb3guQeyhvDtU0c5-W4hDR1KaPfzoLugC5ji5JLZXX9Q==&c=&ch=/#kfc2lsdmlhLnNhYXZlZHJhQGNoZW10cmVhdC5jb20=

Score

5^/10

microsoft phishing

Malware Config

Signatures

Detected potential entity reuse from brand microsoft.
phishing microsoft

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	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
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31022132"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\VersionManager	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 (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3996167089"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31022132"	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\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4009605566"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	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
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31022132"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3996167089"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{191E8B42-C828-11ED-8FFF-62A6D96D5571} = "0"	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1400 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1400 iexplore.exe
1400 iexplore.exe
3488 IEXPLORE.EXE
3488 IEXPLORE.EXE
3488 IEXPLORE.EXE
3488 IEXPLORE.EXE

pid	process
1400	iexplore.exe

pid	process
1400	iexplore.exe
1400	iexplore.exe
3488	IEXPLORE.EXE
3488	IEXPLORE.EXE
3488	IEXPLORE.EXE
3488	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

iexplore.exe

description	pid	process	target process
PID 1400 wrote to memory of 3488	1400	iexplore.exe	IEXPLORE.EXE
PID 1400 wrote to memory of 3488	1400	iexplore.exe	IEXPLORE.EXE
PID 1400 wrote to memory of 3488	1400	iexplore.exe	IEXPLORE.EXE

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://r20.rs6.net/tn.jsp?f=001f5R_iJCwaFy49KkbzzyyG4Gc6gyTfnyF-0mhORlSg_GR3SvOTDN03S6edK3VV6C0V4MuVMDIimdpOdcObWyHN-9YeKxYaaDoTevx2CPeo0wb3guQeyhvDtU0c5-W4hDR1KaPfzoLugC5ji5JLZXX9Q==&c=&ch=/#kfc2lsdmlhLnNhYXZlZHJhQGNoZW10cmVhdC5jb20=
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1400

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1400 CREDAT:17410 /prefetch:2
2⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:3488

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\phzg4yt\imagestore.dat
Filesize
18KB

MD5
146e28b81d87ac9f67562b6a407f0afb

SHA1
21d6bf876aa9da53450d47f792d08da91140bb12

SHA256
a9be0dc8644f9041fbcfd438767ab7e9da4a687d64af6b5b5a153fdba4855f32

SHA512
e74a5718f848d0edb0fa5fd4cf281ad85eb860fe0c99b4e1aab7d99aa2bd18b6ef0b824ad061c81b32dfe39e94ce3266b3323f09ae4314ff7aedef7226a5ac5a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\phzg4yt\imagestore.dat
Filesize
18KB

MD5
146e28b81d87ac9f67562b6a407f0afb

SHA1
21d6bf876aa9da53450d47f792d08da91140bb12

SHA256
a9be0dc8644f9041fbcfd438767ab7e9da4a687d64af6b5b5a153fdba4855f32

SHA512
e74a5718f848d0edb0fa5fd4cf281ad85eb860fe0c99b4e1aab7d99aa2bd18b6ef0b824ad061c81b32dfe39e94ce3266b3323f09ae4314ff7aedef7226a5ac5a

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\39K1WZBJ\favicon_a_eupayfgghqiai7k9sol6lg2[1].ico
Filesize
16KB

MD5
12e3dac858061d088023b2bd48e2fa96

SHA1
e08ce1a144eceae0c3c2ea7a9d6fbc5658f24ce5

SHA256
90cdaf487716184e4034000935c605d1633926d348116d198f355a98b8c6cd21

SHA512
c5030c55a855e7a9e20e22f4c70bf1e0f3c558a9b7d501cfab6992ac2656ae5e41b050ccac541efa55f9603e0d349b247eb4912ee169d44044271789c719cd01

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Analysis

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