wannacry | 43f4cb1e61aa8d6a587263e2c81107ebf2fb5ef6ca19311dd7447b74b85bb5af

General

Target

43f4cb1e61aa8d6a587263e2c81107ebf2fb5ef6ca19311dd7447b74b85bb5af.dll
Size

5.0MB
MD5

fc7dab164812e35752c29178fde872db
SHA1

61d950f2cde956960cf07e115f6428edda32d633
SHA256

43f4cb1e61aa8d6a587263e2c81107ebf2fb5ef6ca19311dd7447b74b85bb5af
SHA512

986558dc6d4a28aaaad82e53df2acf09db8e3c8a939e04de465aaa18b2c212595ba3e75f60ce9c7b6d879b8d81707f414d385037fb21146d4223cb3645288b1f

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (772) 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 3 IoCs

Processes:

mssecsvr.exemssecsvr.exetasksche.exe

pid process

952 mssecsvr.exe
1448 mssecsvr.exe
576 tasksche.exe

pid	process
952	mssecsvr.exe
1448	mssecsvr.exe
576	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvr.exe

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

Drops file in Windows directory 4 IoCs

Processes:

tasksche.exerundll32.exemssecsvr.exe

description	ioc	process
File created	C:\Windows\__tmp_rar_sfx_access_check_7116297	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvr.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{ECF95D5E-4407-424C-86E7-F4723D19804D}\WpadDecisionTime = d00448583b93d801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-75-01-24-bf-77\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{ECF95D5E-4407-424C-86E7-F4723D19804D}	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{ECF95D5E-4407-424C-86E7-F4723D19804D}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{ECF95D5E-4407-424C-86E7-F4723D19804D}\WpadNetworkName = "Network 2"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-75-01-24-bf-77	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-75-01-24-bf-77\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0098000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{ECF95D5E-4407-424C-86E7-F4723D19804D}\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{ECF95D5E-4407-424C-86E7-F4723D19804D}\f6-75-01-24-bf-77	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-75-01-24-bf-77\WpadDecisionTime = d00448583b93d801	mssecsvr.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

rundll32.exerundll32.exemssecsvr.exe

description	pid	process	target process
PID 904 wrote to memory of 1688	904	rundll32.exe	rundll32.exe
PID 904 wrote to memory of 1688	904	rundll32.exe	rundll32.exe
PID 904 wrote to memory of 1688	904	rundll32.exe	rundll32.exe
PID 904 wrote to memory of 1688	904	rundll32.exe	rundll32.exe
PID 904 wrote to memory of 1688	904	rundll32.exe	rundll32.exe
PID 904 wrote to memory of 1688	904	rundll32.exe	rundll32.exe
PID 904 wrote to memory of 1688	904	rundll32.exe	rundll32.exe
PID 1688 wrote to memory of 952	1688	rundll32.exe	mssecsvr.exe
PID 1688 wrote to memory of 952	1688	rundll32.exe	mssecsvr.exe
PID 1688 wrote to memory of 952	1688	rundll32.exe	mssecsvr.exe
PID 1688 wrote to memory of 952	1688	rundll32.exe	mssecsvr.exe
PID 952 wrote to memory of 576	952	mssecsvr.exe	tasksche.exe
PID 952 wrote to memory of 576	952	mssecsvr.exe	tasksche.exe
PID 952 wrote to memory of 576	952	mssecsvr.exe	tasksche.exe
PID 952 wrote to memory of 576	952	mssecsvr.exe	tasksche.exe
PID 952 wrote to memory of 576	952	mssecsvr.exe	tasksche.exe
PID 952 wrote to memory of 576	952	mssecsvr.exe	tasksche.exe
PID 952 wrote to memory of 576	952	mssecsvr.exe	tasksche.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\43f4cb1e61aa8d6a587263e2c81107ebf2fb5ef6ca19311dd7447b74b85bb5af.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:904

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\43f4cb1e61aa8d6a587263e2c81107ebf2fb5ef6ca19311dd7447b74b85bb5af.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1688

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:952

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:576

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1448

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
09fa846303dc895c0688ecc456d9e667

SHA1
2c7527d8f8573dc394b004085d5255b5437847b7

SHA256
ec6757162500e2dcd4dbd9adc59aee10c25da5eaa3d4e65309bc78f8ebd38ca9

SHA512
7707eec8ac96c864365b2df7656549ee83685006fcefd2038564ad7d859fe552041aa7c61af1c9098b2257b2b158f8d511c6fe9c8814636df86d3e3268404ce5

Download Submit
C:\WINDOWS\tasksche.exe
Filesize
2.0MB

MD5
d2a7aaa23e34fd8eb852212a212516df

SHA1
ee6e2e6cb957ac9938e270b5866516bfe2254790

SHA256
8d8849679e249720dc13b93f05d7500d653eddef7bb45df803cfabb80b67da50

SHA512
59d815a2db3d14bcd416f18969b6461e960bd5c41b7c15a5c1542ce98234a229e344343b4c732c2d0da6d1358cc109d23aa7b4225367132b327360ea2b125558

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
09fa846303dc895c0688ecc456d9e667

SHA1
2c7527d8f8573dc394b004085d5255b5437847b7

SHA256
ec6757162500e2dcd4dbd9adc59aee10c25da5eaa3d4e65309bc78f8ebd38ca9

SHA512
7707eec8ac96c864365b2df7656549ee83685006fcefd2038564ad7d859fe552041aa7c61af1c9098b2257b2b158f8d511c6fe9c8814636df86d3e3268404ce5

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
09fa846303dc895c0688ecc456d9e667

SHA1
2c7527d8f8573dc394b004085d5255b5437847b7

SHA256
ec6757162500e2dcd4dbd9adc59aee10c25da5eaa3d4e65309bc78f8ebd38ca9

SHA512
7707eec8ac96c864365b2df7656549ee83685006fcefd2038564ad7d859fe552041aa7c61af1c9098b2257b2b158f8d511c6fe9c8814636df86d3e3268404ce5

Download Submit
C:\Windows\tasksche.exe
Filesize
2.0MB

MD5
d2a7aaa23e34fd8eb852212a212516df

SHA1
ee6e2e6cb957ac9938e270b5866516bfe2254790

SHA256
8d8849679e249720dc13b93f05d7500d653eddef7bb45df803cfabb80b67da50

SHA512
59d815a2db3d14bcd416f18969b6461e960bd5c41b7c15a5c1542ce98234a229e344343b4c732c2d0da6d1358cc109d23aa7b4225367132b327360ea2b125558

Download Submit
memory/576-62-0x0000000000000000-mapping.dmp

Download
memory/952-56-0x0000000000000000-mapping.dmp

Download
memory/1688-54-0x0000000000000000-mapping.dmp

Download
memory/1688-55-0x00000000751C1000-0x00000000751C3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads