wannacry | 4535103ddced2d2d756b4886c0950c0fe39fca42eb94d1970086337ded31e406

General

Target

9a1768e5531d0852278b95e4d0137977.dll
Size

5.0MB
MD5

9a1768e5531d0852278b95e4d0137977
SHA1

2ca173481b3a44682b197f0c4e409bdf901dd5c9
SHA256

4535103ddced2d2d756b4886c0950c0fe39fca42eb94d1970086337ded31e406
SHA512

ae016884b0b40abd14e667b376c44877fdca7b731f993e7fc3ac72bad61575d123ae88b3865f02cb706b05c9dac840f207f9380340de631fb59ed70e1c2829ce

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1163) 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

2028 mssecsvr.exe
1292 mssecsvr.exe
984 tasksche.exe

pid	process
2028	mssecsvr.exe
1292	mssecsvr.exe
984	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:

mssecsvr.exetasksche.exerundll32.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_7082772	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe
File created	C:\WINDOWS\mssecsvr.exe	rundll32.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\ProxyEnable = "0"	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\History\CachePrefix = "Visited:"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}\4a-bc-40-ce-d2-8e	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-bc-40-ce-d2-8e\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\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-bc-40-ce-d2-8e	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}\WpadDecisionTime = 40f7a08bdf9bd801	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\ZoneMap\AutoDetect = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{780329E7-A59F-40F9-8B06-5587950E6EE3}\WpadNetworkName = "Network 3"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-bc-40-ce-d2-8e\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-bc-40-ce-d2-8e\WpadDecisionTime = 40f7a08bdf9bd801	mssecsvr.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

rundll32.exerundll32.exemssecsvr.exe

description	pid	process	target process
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 1988 wrote to memory of 2024	1988	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 2028	2024	rundll32.exe	mssecsvr.exe
PID 2024 wrote to memory of 2028	2024	rundll32.exe	mssecsvr.exe
PID 2024 wrote to memory of 2028	2024	rundll32.exe	mssecsvr.exe
PID 2024 wrote to memory of 2028	2024	rundll32.exe	mssecsvr.exe
PID 2028 wrote to memory of 984	2028	mssecsvr.exe	tasksche.exe
PID 2028 wrote to memory of 984	2028	mssecsvr.exe	tasksche.exe
PID 2028 wrote to memory of 984	2028	mssecsvr.exe	tasksche.exe
PID 2028 wrote to memory of 984	2028	mssecsvr.exe	tasksche.exe
PID 2028 wrote to memory of 984	2028	mssecsvr.exe	tasksche.exe
PID 2028 wrote to memory of 984	2028	mssecsvr.exe	tasksche.exe
PID 2028 wrote to memory of 984	2028	mssecsvr.exe	tasksche.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9a1768e5531d0852278b95e4d0137977.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1988

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9a1768e5531d0852278b95e4d0137977.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2024

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2028

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:984

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:1292

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
071fc5dc89181e747fda2d9687719b69

SHA1
7844483273dc0db64e69c2063594d81f84a9b5bd

SHA256
d280ce9769d1ed1445e1f7dc9e25d194fe29496d0805438889d1fbcfaaa9280c

SHA512
ee6dab69db9b30e3e07587f213d54a64faf5b4fdf7f85dd9fbc72f49d6c845785b3a09b3ff0fea1d5edd28cae9522a30270f9d336e5e46ce802e4b89d333267d

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

MD5
78ebac0bca8b8ecdcb7e591f4a72eeb6

SHA1
2b5df3a69b4a17debf2ab2b2b64a7655734c66d2

SHA256
065bafabd37cb31e9fea599e9f9dd56dddd76b772e02d0561dd8d18b8c83cedc

SHA512
ee7c82d50d65f32cb55e04413de3ffc1288c3d1db863a18bf6d5d6e9f5f4f441de34c56b561097ec46089eab16a2a4994e759d43fa24898680ad3496022193ea

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

MD5
071fc5dc89181e747fda2d9687719b69

SHA1
7844483273dc0db64e69c2063594d81f84a9b5bd

SHA256
d280ce9769d1ed1445e1f7dc9e25d194fe29496d0805438889d1fbcfaaa9280c

SHA512
ee6dab69db9b30e3e07587f213d54a64faf5b4fdf7f85dd9fbc72f49d6c845785b3a09b3ff0fea1d5edd28cae9522a30270f9d336e5e46ce802e4b89d333267d

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

MD5
071fc5dc89181e747fda2d9687719b69

SHA1
7844483273dc0db64e69c2063594d81f84a9b5bd

SHA256
d280ce9769d1ed1445e1f7dc9e25d194fe29496d0805438889d1fbcfaaa9280c

SHA512
ee6dab69db9b30e3e07587f213d54a64faf5b4fdf7f85dd9fbc72f49d6c845785b3a09b3ff0fea1d5edd28cae9522a30270f9d336e5e46ce802e4b89d333267d

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

MD5
78ebac0bca8b8ecdcb7e591f4a72eeb6

SHA1
2b5df3a69b4a17debf2ab2b2b64a7655734c66d2

SHA256
065bafabd37cb31e9fea599e9f9dd56dddd76b772e02d0561dd8d18b8c83cedc

SHA512
ee7c82d50d65f32cb55e04413de3ffc1288c3d1db863a18bf6d5d6e9f5f4f441de34c56b561097ec46089eab16a2a4994e759d43fa24898680ad3496022193ea

Download Submit
memory/984-62-0x0000000000000000-mapping.dmp

Download
memory/2024-54-0x0000000000000000-mapping.dmp

Download
memory/2024-55-0x0000000075731000-0x0000000075733000-memory.dmp

Filesize
8KB

Download
memory/2028-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads