wannacry | 00a87d1b3e33924891dcc5bed69a7a507fe55ee7058ab1d749941eafa71b31cc

General

Target

fbc99e4af741a1ede3251a0b2b061ab1.dll
Size

5.0MB
MD5

fbc99e4af741a1ede3251a0b2b061ab1
SHA1

706e06855ab84381eaeaaa23fb4882b45ea09c78
SHA256

00a87d1b3e33924891dcc5bed69a7a507fe55ee7058ab1d749941eafa71b31cc
SHA512

1094e0f8c768fedd9593acbb607b69c79fbfe7b0ddb8366bc89d1896b0e76fa9724d2757cc063d77f8dd6f3d3583c0ce2bf266d1675c931ab2debb498627ba67

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1302) 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:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1820 mssecsvc.exe
940 mssecsvc.exe
1696 tasksche.exe

pid	process
1820	mssecsvc.exe
940	mssecsvc.exe
1696	tasksche.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 (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	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 (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}\WpadDecisionTime = 20fdb541d99bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}\4e-00-ff-75-0c-a4	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-00-ff-75-0c-a4\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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
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\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-00-ff-75-0c-a4	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\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00fb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-00-ff-75-0c-a4\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-00-ff-75-0c-a4\WpadDecisionTime = 20fdb541d99bd801	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1432 wrote to memory of 1532	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1532	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1532	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1532	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1532	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1532	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1532	1432	rundll32.exe	rundll32.exe
PID 1532 wrote to memory of 1820	1532	rundll32.exe	mssecsvc.exe
PID 1532 wrote to memory of 1820	1532	rundll32.exe	mssecsvc.exe
PID 1532 wrote to memory of 1820	1532	rundll32.exe	mssecsvc.exe
PID 1532 wrote to memory of 1820	1532	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fbc99e4af741a1ede3251a0b2b061ab1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1432

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fbc99e4af741a1ede3251a0b2b061ab1.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1532

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1820

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1696

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:940

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\mssecsvc.exe
Filesize
3.6MB

MD5
c5cd397504bd08178a5799da3c7b7b21

SHA1
0a9122944b1053acfbc7871551422755c482a93e

SHA256
a0b9618ec5b524b698c2055a27183cb05d769414bb8475f857818508b82aa509

SHA512
ae79fc8d6d30089f66c1a127f85fd27c075506bee778d3c315a8ea20c91023bb559c1c50a3a6412206326b8e7cb160bb6f61034aa9c0aa7c4da6fd8446d5a43b

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

MD5
c5cd397504bd08178a5799da3c7b7b21

SHA1
0a9122944b1053acfbc7871551422755c482a93e

SHA256
a0b9618ec5b524b698c2055a27183cb05d769414bb8475f857818508b82aa509

SHA512
ae79fc8d6d30089f66c1a127f85fd27c075506bee778d3c315a8ea20c91023bb559c1c50a3a6412206326b8e7cb160bb6f61034aa9c0aa7c4da6fd8446d5a43b

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

MD5
c5cd397504bd08178a5799da3c7b7b21

SHA1
0a9122944b1053acfbc7871551422755c482a93e

SHA256
a0b9618ec5b524b698c2055a27183cb05d769414bb8475f857818508b82aa509

SHA512
ae79fc8d6d30089f66c1a127f85fd27c075506bee778d3c315a8ea20c91023bb559c1c50a3a6412206326b8e7cb160bb6f61034aa9c0aa7c4da6fd8446d5a43b

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
a613709e471c6d65093c3857167234bc

SHA1
3e21a9325f14a6ec2d9e0df9b28315ab139e288f

SHA256
9f47adad2be191deb99e8419a4659046d099e1646781884e123eb96b5e4a3ab0

SHA512
85e758a3059449ee9ad5db9b2f9c2245ffc505dc760a91c59cf7eaebe08732f873ba43b2c9ae17a524143a6edaa258c7b25c075573a0fe1d469be76c5b661afb

Download Submit
memory/1532-54-0x0000000000000000-mapping.dmp

Download
memory/1532-55-0x0000000076031000-0x0000000076033000-memory.dmp

Filesize
8KB

Download
memory/1820-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads