wannacry | 3743363b9a2845554eed086c43ee5756bd8878867b4cb0a3c0ba6f096596aa5d

General

Target

66df13c96db53128fee1997dc75cd1b9.dll
Size

5.0MB
MD5

66df13c96db53128fee1997dc75cd1b9
SHA1

96b538087dd52cdd71b753e25d3f208ad45efc1b
SHA256

3743363b9a2845554eed086c43ee5756bd8878867b4cb0a3c0ba6f096596aa5d
SHA512

3cc55afc2900bbe2d329f0da121251123395b178435c08c1e62bcbaec58c90b2824698a2702fe84be4f26b6b9bfc40d3b396def497c3dcbedcf5d14bae683cba

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1165) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 2 IoCs

Processes:

mssecsvc.exemssecsvc.exe

pid process

1996 mssecsvc.exe
976 mssecsvc.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-8c-ca-49-e1-52\WpadDecisionTime = 90372d8fec9bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-8c-ca-49-e1-52\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EBA8BB8-F9AE-4316-A3A1-26FD02B6CD27}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EBA8BB8-F9AE-4316-A3A1-26FD02B6CD27}\16-8c-ca-49-e1-52	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EBA8BB8-F9AE-4316-A3A1-26FD02B6CD27}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EBA8BB8-F9AE-4316-A3A1-26FD02B6CD27}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EBA8BB8-F9AE-4316-A3A1-26FD02B6CD27}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-8c-ca-49-e1-52	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7EBA8BB8-F9AE-4316-A3A1-26FD02B6CD27}\WpadDecisionTime = 90372d8fec9bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-8c-ca-49-e1-52\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

mssecsvc.exemssecsvc.exe

pid process

1996 mssecsvc.exe
976 mssecsvc.exe

Suspicious behavior: MapViewOfSection 44 IoCs

Processes:

mssecsvc.exemssecsvc.exe

pid	process
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
1996	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe
976	mssecsvc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

mssecsvc.exemssecsvc.exe

description pid process

Token: SeDebugPrivilege 1996 mssecsvc.exe
Token: SeDebugPrivilege 976 mssecsvc.exe

description	pid	process
Token: SeDebugPrivilege	1996	mssecsvc.exe
Token: SeDebugPrivilege	976	mssecsvc.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

rundll32.exerundll32.exemssecsvc.exe

description	pid	process	target process
PID 1516 wrote to memory of 876	1516	rundll32.exe	rundll32.exe
PID 1516 wrote to memory of 876	1516	rundll32.exe	rundll32.exe
PID 1516 wrote to memory of 876	1516	rundll32.exe	rundll32.exe
PID 1516 wrote to memory of 876	1516	rundll32.exe	rundll32.exe
PID 1516 wrote to memory of 876	1516	rundll32.exe	rundll32.exe
PID 1516 wrote to memory of 876	1516	rundll32.exe	rundll32.exe
PID 1516 wrote to memory of 876	1516	rundll32.exe	rundll32.exe
PID 876 wrote to memory of 1996	876	rundll32.exe	mssecsvc.exe
PID 876 wrote to memory of 1996	876	rundll32.exe	mssecsvc.exe
PID 876 wrote to memory of 1996	876	rundll32.exe	mssecsvc.exe
PID 876 wrote to memory of 1996	876	rundll32.exe	mssecsvc.exe
PID 1996 wrote to memory of 360	1996	mssecsvc.exe	wininit.exe
PID 1996 wrote to memory of 360	1996	mssecsvc.exe	wininit.exe
PID 1996 wrote to memory of 360	1996	mssecsvc.exe	wininit.exe
PID 1996 wrote to memory of 360	1996	mssecsvc.exe	wininit.exe
PID 1996 wrote to memory of 360	1996	mssecsvc.exe	wininit.exe
PID 1996 wrote to memory of 360	1996	mssecsvc.exe	wininit.exe
PID 1996 wrote to memory of 360	1996	mssecsvc.exe	wininit.exe
PID 1996 wrote to memory of 384	1996	mssecsvc.exe	csrss.exe
PID 1996 wrote to memory of 384	1996	mssecsvc.exe	csrss.exe
PID 1996 wrote to memory of 384	1996	mssecsvc.exe	csrss.exe
PID 1996 wrote to memory of 384	1996	mssecsvc.exe	csrss.exe
PID 1996 wrote to memory of 384	1996	mssecsvc.exe	csrss.exe
PID 1996 wrote to memory of 384	1996	mssecsvc.exe	csrss.exe
PID 1996 wrote to memory of 384	1996	mssecsvc.exe	csrss.exe
PID 1996 wrote to memory of 420	1996	mssecsvc.exe	winlogon.exe
PID 1996 wrote to memory of 420	1996	mssecsvc.exe	winlogon.exe
PID 1996 wrote to memory of 420	1996	mssecsvc.exe	winlogon.exe
PID 1996 wrote to memory of 420	1996	mssecsvc.exe	winlogon.exe
PID 1996 wrote to memory of 420	1996	mssecsvc.exe	winlogon.exe
PID 1996 wrote to memory of 420	1996	mssecsvc.exe	winlogon.exe
PID 1996 wrote to memory of 420	1996	mssecsvc.exe	winlogon.exe
PID 1996 wrote to memory of 468	1996	mssecsvc.exe	services.exe
PID 1996 wrote to memory of 468	1996	mssecsvc.exe	services.exe
PID 1996 wrote to memory of 468	1996	mssecsvc.exe	services.exe
PID 1996 wrote to memory of 468	1996	mssecsvc.exe	services.exe
PID 1996 wrote to memory of 468	1996	mssecsvc.exe	services.exe
PID 1996 wrote to memory of 468	1996	mssecsvc.exe	services.exe
PID 1996 wrote to memory of 468	1996	mssecsvc.exe	services.exe
PID 1996 wrote to memory of 476	1996	mssecsvc.exe	lsass.exe
PID 1996 wrote to memory of 476	1996	mssecsvc.exe	lsass.exe
PID 1996 wrote to memory of 476	1996	mssecsvc.exe	lsass.exe
PID 1996 wrote to memory of 476	1996	mssecsvc.exe	lsass.exe
PID 1996 wrote to memory of 476	1996	mssecsvc.exe	lsass.exe
PID 1996 wrote to memory of 476	1996	mssecsvc.exe	lsass.exe
PID 1996 wrote to memory of 476	1996	mssecsvc.exe	lsass.exe
PID 1996 wrote to memory of 484	1996	mssecsvc.exe	lsm.exe
PID 1996 wrote to memory of 484	1996	mssecsvc.exe	lsm.exe
PID 1996 wrote to memory of 484	1996	mssecsvc.exe	lsm.exe
PID 1996 wrote to memory of 484	1996	mssecsvc.exe	lsm.exe
PID 1996 wrote to memory of 484	1996	mssecsvc.exe	lsm.exe
PID 1996 wrote to memory of 484	1996	mssecsvc.exe	lsm.exe
PID 1996 wrote to memory of 484	1996	mssecsvc.exe	lsm.exe
PID 1996 wrote to memory of 600	1996	mssecsvc.exe	svchost.exe
PID 1996 wrote to memory of 600	1996	mssecsvc.exe	svchost.exe
PID 1996 wrote to memory of 600	1996	mssecsvc.exe	svchost.exe
PID 1996 wrote to memory of 600	1996	mssecsvc.exe	svchost.exe
PID 1996 wrote to memory of 600	1996	mssecsvc.exe	svchost.exe
PID 1996 wrote to memory of 600	1996	mssecsvc.exe	svchost.exe
PID 1996 wrote to memory of 600	1996	mssecsvc.exe	svchost.exe
PID 1996 wrote to memory of 680	1996	mssecsvc.exe	svchost.exe
PID 1996 wrote to memory of 680	1996	mssecsvc.exe	svchost.exe
PID 1996 wrote to memory of 680	1996	mssecsvc.exe	svchost.exe
PID 1996 wrote to memory of 680	1996	mssecsvc.exe	svchost.exe

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
PID:476

C:\Windows\system32\services.exe
C:\Windows\system32\services.exe
1⤵
PID:468

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService
2⤵
PID:328

C:\Windows\system32\sppsvc.exe
C:\Windows\system32\sppsvc.exe
2⤵
PID:1100

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
2⤵
PID:808

C:\Windows\system32\taskhost.exe
"taskhost.exe"
2⤵
PID:1240

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
2⤵
PID:1036

C:\Windows\System32\spoolsv.exe
C:\Windows\System32\spoolsv.exe
2⤵
PID:300

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs
2⤵
PID:888

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService
2⤵
PID:840

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
2⤵
PID:816

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
2⤵
PID:764

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k RPCSS
2⤵
PID:680

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch
2⤵
PID:600

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
3⤵
PID:2032

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:976

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:420

C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
1⤵
PID:384

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:360

C:\Windows\system32\lsm.exe
C:\Windows\system32\lsm.exe
2⤵
PID:484

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1976

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1372

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\66df13c96db53128fee1997dc75cd1b9.dll,#1
2⤵
- Suspicious use of WriteProcessMemory
PID:1516

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\66df13c96db53128fee1997dc75cd1b9.dll,#1
3⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:876

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
4⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1996

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1312

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\MSSECSVC.EXE

Filesize
3.6MB

MD5
2391e0dbb3a7862306913032ce72f302

SHA1
a92a91e847986494afbd182d2711bc50fb02f51d

SHA256
55d3b4dfec21bd0b1fdef783fd8967654d949f4d06534e87cb8f96c91cd08436

SHA512
12321b2c9133887090b1762acc2e44b9a5635a2707ab622a28bba186d860bf3cee98d369b69937d42aea340327ff73a48a9e48921746550241aa06c6d3b11258

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
2391e0dbb3a7862306913032ce72f302

SHA1
a92a91e847986494afbd182d2711bc50fb02f51d

SHA256
55d3b4dfec21bd0b1fdef783fd8967654d949f4d06534e87cb8f96c91cd08436

SHA512
12321b2c9133887090b1762acc2e44b9a5635a2707ab622a28bba186d860bf3cee98d369b69937d42aea340327ff73a48a9e48921746550241aa06c6d3b11258

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
2391e0dbb3a7862306913032ce72f302

SHA1
a92a91e847986494afbd182d2711bc50fb02f51d

SHA256
55d3b4dfec21bd0b1fdef783fd8967654d949f4d06534e87cb8f96c91cd08436

SHA512
12321b2c9133887090b1762acc2e44b9a5635a2707ab622a28bba186d860bf3cee98d369b69937d42aea340327ff73a48a9e48921746550241aa06c6d3b11258

Download Submit
memory/876-54-0x0000000000000000-mapping.dmp

Download
memory/876-55-0x0000000076201000-0x0000000076203000-memory.dmp

Filesize
8KB

Download
memory/976-62-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/976-67-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/1996-56-0x0000000000000000-mapping.dmp

Download
memory/1996-59-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/1996-63-0x000000007EF80000-0x000000007EF8C000-memory.dmp

Filesize
48KB

Download
memory/1996-65-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/1996-66-0x000000007EF80000-0x000000007EF8C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads