wannacry | 7568615ba6f5281a2d9efcbbe690325417b70a9e2637b67eaee41f7690f3215b

General

Target

bce1446990c3f94fea843f53eee70e14.dll
Size

5.0MB
MD5

bce1446990c3f94fea843f53eee70e14
SHA1

a6b5891732e8830163d223b517a8ba99f8b750d3
SHA256

7568615ba6f5281a2d9efcbbe690325417b70a9e2637b67eaee41f7690f3215b
SHA512

dcc68ea4f0c0de4f9143324b5cd04f00c0c7dc41c49d57004bb3acd39350c455eb1ad7953dcef250f73a2307766ceffab34f78a2073e3244eaa9522d7c09c9c3

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1273) 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:

mssecsvr.exemssecsvr.exe

pid process

972 mssecsvr.exe
1360 mssecsvr.exe

pid	process
972	mssecsvr.exe
1360	mssecsvr.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 2 IoCs

Processes:

rundll32.exemssecsvr.exe

description ioc process

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

description	ioc	process
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\AutoDetect = "1"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F363206D-C89B-4C23-8337-A926BC36CB0D}\WpadNetworkName = "Network 3"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-ab-99-2e-89-9d	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-ab-99-2e-89-9d\WpadDecisionTime = 1035dca9e69bd801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-ab-99-2e-89-9d\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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\Wpad	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F363206D-C89B-4C23-8337-A926BC36CB0D}\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F363206D-C89B-4C23-8337-A926BC36CB0D}\36-ab-99-2e-89-9d	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F363206D-C89B-4C23-8337-A926BC36CB0D}\WpadDecisionTime = 1035dca9e69bd801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F363206D-C89B-4C23-8337-A926BC36CB0D}\WpadDecision = "0"	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
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
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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00f3000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F363206D-C89B-4C23-8337-A926BC36CB0D}	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-ab-99-2e-89-9d\WpadDecisionReason = "1"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1964 wrote to memory of 900	1964	rundll32.exe	rundll32.exe
PID 1964 wrote to memory of 900	1964	rundll32.exe	rundll32.exe
PID 1964 wrote to memory of 900	1964	rundll32.exe	rundll32.exe
PID 1964 wrote to memory of 900	1964	rundll32.exe	rundll32.exe
PID 1964 wrote to memory of 900	1964	rundll32.exe	rundll32.exe
PID 1964 wrote to memory of 900	1964	rundll32.exe	rundll32.exe
PID 1964 wrote to memory of 900	1964	rundll32.exe	rundll32.exe
PID 900 wrote to memory of 972	900	rundll32.exe	mssecsvr.exe
PID 900 wrote to memory of 972	900	rundll32.exe	mssecsvr.exe
PID 900 wrote to memory of 972	900	rundll32.exe	mssecsvr.exe
PID 900 wrote to memory of 972	900	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bce1446990c3f94fea843f53eee70e14.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1964

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bce1446990c3f94fea843f53eee70e14.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:900

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:972

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:1360

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

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
6409170ec60d0896cd981d2395f8bacc

SHA1
b2cd021402934c0564c905c2e422bdece94c8a23

SHA256
ca5f574b4e1785b559f4905ac418309f00c500e65d16dbe7ec892f4a31bc9b18

SHA512
c7ae840fd5ebaeb82e553c113e1464a21aa38baf67c43c44ac33906bcdecb272e9b2603e4bddf48026f40198c83708c097d5901b57ec371a2f5a868b31c5fd55

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

MD5
6409170ec60d0896cd981d2395f8bacc

SHA1
b2cd021402934c0564c905c2e422bdece94c8a23

SHA256
ca5f574b4e1785b559f4905ac418309f00c500e65d16dbe7ec892f4a31bc9b18

SHA512
c7ae840fd5ebaeb82e553c113e1464a21aa38baf67c43c44ac33906bcdecb272e9b2603e4bddf48026f40198c83708c097d5901b57ec371a2f5a868b31c5fd55

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

MD5
6409170ec60d0896cd981d2395f8bacc

SHA1
b2cd021402934c0564c905c2e422bdece94c8a23

SHA256
ca5f574b4e1785b559f4905ac418309f00c500e65d16dbe7ec892f4a31bc9b18

SHA512
c7ae840fd5ebaeb82e553c113e1464a21aa38baf67c43c44ac33906bcdecb272e9b2603e4bddf48026f40198c83708c097d5901b57ec371a2f5a868b31c5fd55

Download Submit
memory/900-54-0x0000000000000000-mapping.dmp

Download
memory/900-55-0x0000000076901000-0x0000000076903000-memory.dmp

Filesize
8KB

Download
memory/972-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads