wannacry | ec1b85a369cd54f82c38f06b9036b3907231d879343991557a0d1ac0c6e26a22

General

Target

e24f7c037a4bf2fc4ef154e59ca96b37.dll
Size

5.0MB
MD5

e24f7c037a4bf2fc4ef154e59ca96b37
SHA1

3a6bddd66150e2302ad1511015b5d1b65942349c
SHA256

ec1b85a369cd54f82c38f06b9036b3907231d879343991557a0d1ac0c6e26a22
SHA512

d03eafcf2d690bdfdf8bd05f5092d37d6c25065d98a07e3363010a6e102b6f0f808fe3ff3c9e6fc664266ac16275cd8b0cf591369adfb39cfa775c9c9e6e94a5

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1257) 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

1632 mssecsvr.exe
1284 mssecsvr.exe
1472 tasksche.exe

pid	process
1632	mssecsvr.exe
1284	mssecsvr.exe
1472	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:

rundll32.exemssecsvr.exetasksche.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_7080651	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.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\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6204A69B-0179-4F4F-BEF1-B23CB1064584}	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6204A69B-0179-4F4F-BEF1-B23CB1064584}\WpadDecision = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6204A69B-0179-4F4F-BEF1-B23CB1064584}\WpadNetworkName = "Network 3"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
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\ProxyEnable = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\Wpad\72-15-89-e4-62-9b\WpadDecisionTime = f0d0edc9ed9bd801	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c3000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6204A69B-0179-4F4F-BEF1-B23CB1064584}\WpadDecisionReason = "1"	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\Connections	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\Content\CachePrefix	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6204A69B-0179-4F4F-BEF1-B23CB1064584}\WpadDecisionTime = f0d0edc9ed9bd801	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-15-89-e4-62-9b	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6204A69B-0179-4F4F-BEF1-B23CB1064584}\72-15-89-e4-62-9b	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-15-89-e4-62-9b\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\72-15-89-e4-62-9b\WpadDecision = "0"	mssecsvr.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

rundll32.exerundll32.exemssecsvr.exe

description	pid	process	target process
PID 1936 wrote to memory of 1780	1936	rundll32.exe	rundll32.exe
PID 1936 wrote to memory of 1780	1936	rundll32.exe	rundll32.exe
PID 1936 wrote to memory of 1780	1936	rundll32.exe	rundll32.exe
PID 1936 wrote to memory of 1780	1936	rundll32.exe	rundll32.exe
PID 1936 wrote to memory of 1780	1936	rundll32.exe	rundll32.exe
PID 1936 wrote to memory of 1780	1936	rundll32.exe	rundll32.exe
PID 1936 wrote to memory of 1780	1936	rundll32.exe	rundll32.exe
PID 1780 wrote to memory of 1632	1780	rundll32.exe	mssecsvr.exe
PID 1780 wrote to memory of 1632	1780	rundll32.exe	mssecsvr.exe
PID 1780 wrote to memory of 1632	1780	rundll32.exe	mssecsvr.exe
PID 1780 wrote to memory of 1632	1780	rundll32.exe	mssecsvr.exe
PID 1632 wrote to memory of 1472	1632	mssecsvr.exe	tasksche.exe
PID 1632 wrote to memory of 1472	1632	mssecsvr.exe	tasksche.exe
PID 1632 wrote to memory of 1472	1632	mssecsvr.exe	tasksche.exe
PID 1632 wrote to memory of 1472	1632	mssecsvr.exe	tasksche.exe
PID 1632 wrote to memory of 1472	1632	mssecsvr.exe	tasksche.exe
PID 1632 wrote to memory of 1472	1632	mssecsvr.exe	tasksche.exe
PID 1632 wrote to memory of 1472	1632	mssecsvr.exe	tasksche.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e24f7c037a4bf2fc4ef154e59ca96b37.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1936

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e24f7c037a4bf2fc4ef154e59ca96b37.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1780

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1632

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1472

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:1284

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

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Downloads

C:\WINDOWS\mssecsvr.exe

Filesize
2.2MB

MD5
487a62ac36581b4b80dc3b85ec0630ed

SHA1
6b1dbab7ab3dca9c4c1fd66c307a89ce2317123f

SHA256
1303b8c82866795b41c5552340f8a568d615817db94ad3b33401031b5cda902a

SHA512
f2023a672a09676fd24a1e8b3e581875c736a0066ed70e8dd8a83d56b4ef7e9401b16298ecf97425d85c67f8b987c3a2a3d30be8cbb702f0a9d47b44e17a2793

Download Submit
C:\WINDOWS\tasksche.exe

Filesize
2.0MB

MD5
e73f94dd7abced28e73c4e751619ccad

SHA1
c4731f1661f45aa608ab9409c23dc9a77f380c40

SHA256
e41e4ed3643e2951fa0cec1a359a97d09896a22e53198999042ab6546bf7d203

SHA512
b34b06fddb90fb6dc0bac66647dc09ae2384e8a96011f0fef1e2669c03e353d88454387feb685869d482fd632e17b6708168b9e6868fea7ba03a02e2f2ab6b1a

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
487a62ac36581b4b80dc3b85ec0630ed

SHA1
6b1dbab7ab3dca9c4c1fd66c307a89ce2317123f

SHA256
1303b8c82866795b41c5552340f8a568d615817db94ad3b33401031b5cda902a

SHA512
f2023a672a09676fd24a1e8b3e581875c736a0066ed70e8dd8a83d56b4ef7e9401b16298ecf97425d85c67f8b987c3a2a3d30be8cbb702f0a9d47b44e17a2793

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
487a62ac36581b4b80dc3b85ec0630ed

SHA1
6b1dbab7ab3dca9c4c1fd66c307a89ce2317123f

SHA256
1303b8c82866795b41c5552340f8a568d615817db94ad3b33401031b5cda902a

SHA512
f2023a672a09676fd24a1e8b3e581875c736a0066ed70e8dd8a83d56b4ef7e9401b16298ecf97425d85c67f8b987c3a2a3d30be8cbb702f0a9d47b44e17a2793

Download Submit
C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
e73f94dd7abced28e73c4e751619ccad

SHA1
c4731f1661f45aa608ab9409c23dc9a77f380c40

SHA256
e41e4ed3643e2951fa0cec1a359a97d09896a22e53198999042ab6546bf7d203

SHA512
b34b06fddb90fb6dc0bac66647dc09ae2384e8a96011f0fef1e2669c03e353d88454387feb685869d482fd632e17b6708168b9e6868fea7ba03a02e2f2ab6b1a

Download Submit
memory/1472-62-0x0000000000000000-mapping.dmp

Download
memory/1632-56-0x0000000000000000-mapping.dmp

Download
memory/1780-54-0x0000000000000000-mapping.dmp

Download
memory/1780-55-0x00000000760F1000-0x00000000760F3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads