wannacry | bf9b8a89148553fa0da5d2270bf7db0b5482df6517867410fead18192d5135a1

General

Target

1ee069455ec3b2de5eaefe54a536962c.dll
Size

5.0MB
MD5

1ee069455ec3b2de5eaefe54a536962c
SHA1

6b3e9bd6122e40ee69d3bd441213fc1505c0d419
SHA256

bf9b8a89148553fa0da5d2270bf7db0b5482df6517867410fead18192d5135a1
SHA512

f021b5820e4a89608e87e1ce050fe2fa28b7930492bdb7823389e590f94988c967849abc6615a8c66c337a3f31df9a8bfddee6bf9e43ff497f93c57ec5cef6b9

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1266) 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

888 mssecsvc.exe
2040 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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}\WpadDecisionTime = 30e830eae79bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	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\aa-9a-b0-7d-5c-4f	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9a-b0-7d-5c-4f\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9a-b0-7d-5c-4f\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	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\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{CC7B9447-BD8D-4E20-895C-6B6F7836A7AF}\aa-9a-b0-7d-5c-4f	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9a-b0-7d-5c-4f\WpadDecisionTime = 30e830eae79bd801	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00be000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

mssecsvc.exemssecsvc.exe

pid process

888 mssecsvc.exe
2040 mssecsvc.exe

Suspicious behavior: MapViewOfSection 46 IoCs

Processes:

mssecsvc.exemssecsvc.exe

pid	process
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
888	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe
2040	mssecsvc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

mssecsvc.exemssecsvc.exe

description pid process

Token: SeDebugPrivilege 888 mssecsvc.exe
Token: SeDebugPrivilege 2040 mssecsvc.exe

description	pid	process
Token: SeDebugPrivilege	888	mssecsvc.exe
Token: SeDebugPrivilege	2040	mssecsvc.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

rundll32.exerundll32.exemssecsvc.exe

description	pid	process	target process
PID 1028 wrote to memory of 1888	1028	rundll32.exe	rundll32.exe
PID 1028 wrote to memory of 1888	1028	rundll32.exe	rundll32.exe
PID 1028 wrote to memory of 1888	1028	rundll32.exe	rundll32.exe
PID 1028 wrote to memory of 1888	1028	rundll32.exe	rundll32.exe
PID 1028 wrote to memory of 1888	1028	rundll32.exe	rundll32.exe
PID 1028 wrote to memory of 1888	1028	rundll32.exe	rundll32.exe
PID 1028 wrote to memory of 1888	1028	rundll32.exe	rundll32.exe
PID 1888 wrote to memory of 888	1888	rundll32.exe	mssecsvc.exe
PID 1888 wrote to memory of 888	1888	rundll32.exe	mssecsvc.exe
PID 1888 wrote to memory of 888	1888	rundll32.exe	mssecsvc.exe
PID 1888 wrote to memory of 888	1888	rundll32.exe	mssecsvc.exe
PID 888 wrote to memory of 368	888	mssecsvc.exe	csrss.exe
PID 888 wrote to memory of 368	888	mssecsvc.exe	csrss.exe
PID 888 wrote to memory of 368	888	mssecsvc.exe	csrss.exe
PID 888 wrote to memory of 368	888	mssecsvc.exe	csrss.exe
PID 888 wrote to memory of 368	888	mssecsvc.exe	csrss.exe
PID 888 wrote to memory of 368	888	mssecsvc.exe	csrss.exe
PID 888 wrote to memory of 368	888	mssecsvc.exe	csrss.exe
PID 888 wrote to memory of 376	888	mssecsvc.exe	wininit.exe
PID 888 wrote to memory of 376	888	mssecsvc.exe	wininit.exe
PID 888 wrote to memory of 376	888	mssecsvc.exe	wininit.exe
PID 888 wrote to memory of 376	888	mssecsvc.exe	wininit.exe
PID 888 wrote to memory of 376	888	mssecsvc.exe	wininit.exe
PID 888 wrote to memory of 376	888	mssecsvc.exe	wininit.exe
PID 888 wrote to memory of 376	888	mssecsvc.exe	wininit.exe
PID 888 wrote to memory of 416	888	mssecsvc.exe	winlogon.exe
PID 888 wrote to memory of 416	888	mssecsvc.exe	winlogon.exe
PID 888 wrote to memory of 416	888	mssecsvc.exe	winlogon.exe
PID 888 wrote to memory of 416	888	mssecsvc.exe	winlogon.exe
PID 888 wrote to memory of 416	888	mssecsvc.exe	winlogon.exe
PID 888 wrote to memory of 416	888	mssecsvc.exe	winlogon.exe
PID 888 wrote to memory of 416	888	mssecsvc.exe	winlogon.exe
PID 888 wrote to memory of 460	888	mssecsvc.exe	services.exe
PID 888 wrote to memory of 460	888	mssecsvc.exe	services.exe
PID 888 wrote to memory of 460	888	mssecsvc.exe	services.exe
PID 888 wrote to memory of 460	888	mssecsvc.exe	services.exe
PID 888 wrote to memory of 460	888	mssecsvc.exe	services.exe
PID 888 wrote to memory of 460	888	mssecsvc.exe	services.exe
PID 888 wrote to memory of 460	888	mssecsvc.exe	services.exe
PID 888 wrote to memory of 476	888	mssecsvc.exe	lsass.exe
PID 888 wrote to memory of 476	888	mssecsvc.exe	lsass.exe
PID 888 wrote to memory of 476	888	mssecsvc.exe	lsass.exe
PID 888 wrote to memory of 476	888	mssecsvc.exe	lsass.exe
PID 888 wrote to memory of 476	888	mssecsvc.exe	lsass.exe
PID 888 wrote to memory of 476	888	mssecsvc.exe	lsass.exe
PID 888 wrote to memory of 476	888	mssecsvc.exe	lsass.exe
PID 888 wrote to memory of 484	888	mssecsvc.exe	lsm.exe
PID 888 wrote to memory of 484	888	mssecsvc.exe	lsm.exe
PID 888 wrote to memory of 484	888	mssecsvc.exe	lsm.exe
PID 888 wrote to memory of 484	888	mssecsvc.exe	lsm.exe
PID 888 wrote to memory of 484	888	mssecsvc.exe	lsm.exe
PID 888 wrote to memory of 484	888	mssecsvc.exe	lsm.exe
PID 888 wrote to memory of 484	888	mssecsvc.exe	lsm.exe
PID 888 wrote to memory of 576	888	mssecsvc.exe	svchost.exe
PID 888 wrote to memory of 576	888	mssecsvc.exe	svchost.exe
PID 888 wrote to memory of 576	888	mssecsvc.exe	svchost.exe
PID 888 wrote to memory of 576	888	mssecsvc.exe	svchost.exe
PID 888 wrote to memory of 576	888	mssecsvc.exe	svchost.exe
PID 888 wrote to memory of 576	888	mssecsvc.exe	svchost.exe
PID 888 wrote to memory of 576	888	mssecsvc.exe	svchost.exe
PID 888 wrote to memory of 644	888	mssecsvc.exe	svchost.exe
PID 888 wrote to memory of 644	888	mssecsvc.exe	svchost.exe
PID 888 wrote to memory of 644	888	mssecsvc.exe	svchost.exe
PID 888 wrote to memory of 644	888	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:460

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
2⤵
PID:740

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
2⤵
PID:1076

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
2⤵
PID:276

C:\Windows\system32\sppsvc.exe
C:\Windows\system32\sppsvc.exe
2⤵
PID:1072

C:\Windows\system32\taskhost.exe
"taskhost.exe"
2⤵
PID:1124

C:\Windows\System32\spoolsv.exe
C:\Windows\System32\spoolsv.exe
2⤵
PID:896

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService
2⤵
PID:284

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs
2⤵
PID:868

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService
2⤵
PID:844

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
2⤵
PID:800

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k RPCSS
2⤵
PID:644

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch
2⤵
PID:576

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
3⤵
PID:1256

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:2040

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:416

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:376

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

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:368

C:\Windows\system32\wbem\wmiprvse.exe
C:\Windows\system32\wbem\wmiprvse.exe
1⤵
PID:1980

\\?\C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T /R
1⤵
PID:1956

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1244

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1ee069455ec3b2de5eaefe54a536962c.dll,#1
2⤵
- Suspicious use of WriteProcessMemory
PID:1028

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1ee069455ec3b2de5eaefe54a536962c.dll,#1
3⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1888

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:888

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1180

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
da038e473c9e29b33ef48e73843a039b

SHA1
2168c668eb8df4173a3a60214297d1818f6a4363

SHA256
2266e75d65b3f2117f2c72eabb9251ca53f01990ee6321499181282d31acd1b8

SHA512
d6be08f350099e8686459f9a35b3669a5c47fb36078bf71a726d1dbe552d1cdf12a0f3743b027f40220a38503c5fdabbef163e1c413672c08b9930bb71c41f7f

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
da038e473c9e29b33ef48e73843a039b

SHA1
2168c668eb8df4173a3a60214297d1818f6a4363

SHA256
2266e75d65b3f2117f2c72eabb9251ca53f01990ee6321499181282d31acd1b8

SHA512
d6be08f350099e8686459f9a35b3669a5c47fb36078bf71a726d1dbe552d1cdf12a0f3743b027f40220a38503c5fdabbef163e1c413672c08b9930bb71c41f7f

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
da038e473c9e29b33ef48e73843a039b

SHA1
2168c668eb8df4173a3a60214297d1818f6a4363

SHA256
2266e75d65b3f2117f2c72eabb9251ca53f01990ee6321499181282d31acd1b8

SHA512
d6be08f350099e8686459f9a35b3669a5c47fb36078bf71a726d1dbe552d1cdf12a0f3743b027f40220a38503c5fdabbef163e1c413672c08b9930bb71c41f7f

Download Submit
memory/888-56-0x0000000000000000-mapping.dmp

Download
memory/888-59-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/888-64-0x000000007EF70000-0x000000007EF7C000-memory.dmp

Filesize
48KB

Download
memory/888-63-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/1888-54-0x0000000000000000-mapping.dmp

Download
memory/1888-55-0x0000000075DC1000-0x0000000075DC3000-memory.dmp

Filesize
8KB

Download
memory/2040-65-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads