b7cffe74a34ec101ee2b66a88793b50ee3da20b5b627b6e49809247def7b8ad6

General

Target

b7cffe74a34ec101ee2b66a88793b50ee3da20b5b627b6e49809247def7b8ad6.dll
Size

712KB
MD5

75c25f471cdde483f053c7bd7b4756f4
SHA1

9dea129097086ce34fdd2251149d490d0996803e
SHA256

b7cffe74a34ec101ee2b66a88793b50ee3da20b5b627b6e49809247def7b8ad6
SHA512

5389c430939942a5cca000a3f44bd4d4ae005813c10e7082c9ddfc24b1338f342e2f42245479b95509028be80d0d4675175e5826023704b47b6f73440b901314
SSDEEP

6144:HR1LBd5YZKUGk7cz8zecE9bJm30rmcfkOL3aEpvGAKV8MB87xB+Gb9DehrV9K2hz:HRlBDz9bcamcPf173jZawei+6HL1Jf+

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
980	cfe1121.tmp

Loads dropped DLL 2 IoCs

pid	Process
1928	regsvr32.exe
1928	regsvr32.exe

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{B874920D-9926-4418-BC4B-F08333BE68A1}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{B874920D-9926-4418-BC4B-F08333BE68A1}\ = "Mirar"	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 18 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\SearchScopes\{76584953-F46F-4DDB-835A-DF13CF9393D1}\Codepage = "65001"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\Use Custom Search URL = "1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Toolbar	cfe1121.tmp
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\SearchScopes\{76584953-F46F-4DDB-835A-DF13CF9393D1}\URL = "http://www.mirarsearch.com/?q={searchTerms}&a=SEARCH"	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{76584953-F46F-4DDB-835A-DF13CF9393D1}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\SearchScopes\DefaultScope = "{76584953-F46F-4DDB-835A-DF13CF9393D1}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\SearchScopes\{76584953-F46F-4DDB-835A-DF13CF9393D1}	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\SearchScopes\{76584953-F46F-4DDB-835A-DF13CF9393D1}\DisplayName = "Search"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\SearchScopes\{76584953-F46F-4DDB-835A-DF13CF9393D1}\URL = "http://www.mirarsearch.com/?q={searchTerms}&a=SEARCH"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\Search Bar = "http://www.mirarsearch.com/?useie5=1&q="	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\Search Bar = "http://www.mirarsearch.com/?useie5=1&q="	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\SearchScopes\{76584953-F46F-4DDB-835A-DF13CF9393D1}\DisplayName = "Search"	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\SearchScopes\{76584953-F46F-4DDB-835A-DF13CF9393D1}\Codepage = "65001"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\SearchScopes\DefaultScope = "{76584953-F46F-4DDB-835A-DF13CF9393D1}"	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\Use Custom Search URL = "1"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Toolbar\{B874920C-9926-4418-BC4B-F08333BE68A1} = "0"	cfe1121.tmp
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser\ITBarLayout = "0"	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser\ITBar7Layout = "0"	regsvr32.exe

Modifies registry class 18 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920D-9926-4418-BC4B-F08333BE68A1}\ = "Mirar"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920D-9926-4418-BC4B-F08333BE68A1}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920D-9926-4418-BC4B-F08333BE68A1}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920D-9926-4418-BC4B-F08333BE68A1}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}\TypeLib\ = "{4778ADF3-5B91-4ADC-8576-49919CFB15EE}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}\Properties	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}\Properties\Ticket = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920D-9926-4418-BC4B-F08333BE68A1}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b7cffe74a34ec101ee2b66a88793b50ee3da20b5b627b6e49809247def7b8ad6.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b7cffe74a34ec101ee2b66a88793b50ee3da20b5b627b6e49809247def7b8ad6.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}\Properties\Version = "78"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}\Properties\BuildName = "876992"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920C-9926-4418-BC4B-F08333BE68A1}\ = "Mirar"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920D-9926-4418-BC4B-F08333BE68A1}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B874920D-9926-4418-BC4B-F08333BE68A1}\TypeLib\ = "{4778ADF3-5B91-4ADC-8576-49919CFB15EE}"	regsvr32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1928	regsvr32.exe
1928	regsvr32.exe
980	cfe1121.tmp

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 1928	1980	regsvr32.exe	28
PID 1980 wrote to memory of 1928	1980	regsvr32.exe	28
PID 1980 wrote to memory of 1928	1980	regsvr32.exe	28
PID 1980 wrote to memory of 1928	1980	regsvr32.exe	28
PID 1980 wrote to memory of 1928	1980	regsvr32.exe	28
PID 1980 wrote to memory of 1928	1980	regsvr32.exe	28
PID 1980 wrote to memory of 1928	1980	regsvr32.exe	28
PID 1928 wrote to memory of 980	1928	regsvr32.exe	31
PID 1928 wrote to memory of 980	1928	regsvr32.exe	31
PID 1928 wrote to memory of 980	1928	regsvr32.exe	31
PID 1928 wrote to memory of 980	1928	regsvr32.exe	31

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b7cffe74a34ec101ee2b66a88793b50ee3da20b5b627b6e49809247def7b8ad6.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\b7cffe74a34ec101ee2b66a88793b50ee3da20b5b627b6e49809247def7b8ad6.dll
  2⤵
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Modifies Internet Explorer settings
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Users\Admin\AppData\Local\Temp\cfe1121.tmp
    C:\Users\Admin\AppData\Local\Temp\cfe1121.tmp
    3⤵
    - Executes dropped EXE
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:980

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Browser Extensions

1

T1176

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\cfe1121.tmp

Filesize
188KB

MD5
b133fd5f0c375767c410a1471a08ec1b

SHA1
d5bd113150c7e1412de035669195a4e0a6295974

SHA256
6b242f0791468a33cd674c1e43684fe4a24963daad48708f36aa191c12a89d36

SHA512
91fe6727067f29c78391eacdb292f75b4ec7786aaac0f8e2d4e9818a12a84eaba63f15db7ddbb11fe395fcac11ebf778d583e921f4835b5f805d2eb770c761b1

Download Submit
C:\Users\Admin\AppData\Local\Temp\cfe1121.tmp

Filesize
188KB

MD5
b133fd5f0c375767c410a1471a08ec1b

SHA1
d5bd113150c7e1412de035669195a4e0a6295974

SHA256
6b242f0791468a33cd674c1e43684fe4a24963daad48708f36aa191c12a89d36

SHA512
91fe6727067f29c78391eacdb292f75b4ec7786aaac0f8e2d4e9818a12a84eaba63f15db7ddbb11fe395fcac11ebf778d583e921f4835b5f805d2eb770c761b1

Download Submit
\Users\Admin\AppData\Local\Temp\cfe1121.tmp

Filesize
188KB

MD5
b133fd5f0c375767c410a1471a08ec1b

SHA1
d5bd113150c7e1412de035669195a4e0a6295974

SHA256
6b242f0791468a33cd674c1e43684fe4a24963daad48708f36aa191c12a89d36

SHA512
91fe6727067f29c78391eacdb292f75b4ec7786aaac0f8e2d4e9818a12a84eaba63f15db7ddbb11fe395fcac11ebf778d583e921f4835b5f805d2eb770c761b1

Download Submit
\Users\Admin\AppData\Local\Temp\cfe1121.tmp

Filesize
188KB

MD5
b133fd5f0c375767c410a1471a08ec1b

SHA1
d5bd113150c7e1412de035669195a4e0a6295974

SHA256
6b242f0791468a33cd674c1e43684fe4a24963daad48708f36aa191c12a89d36

SHA512
91fe6727067f29c78391eacdb292f75b4ec7786aaac0f8e2d4e9818a12a84eaba63f15db7ddbb11fe395fcac11ebf778d583e921f4835b5f805d2eb770c761b1

Download Submit
memory/1928-56-0x0000000075521000-0x0000000075523000-memory.dmp

Filesize
8KB

Download
memory/1980-54-0x000007FEFBA81000-0x000007FEFBA83000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads