wannacry | 5667b84da3c323b2a49477e46476adfaaf4c76bc05f9d6ca1102a22f8610213e

General

Target

2056acb40efe2135577dd836f22211af_JaffaCakes118.dll
Size

5.0MB
MD5

2056acb40efe2135577dd836f22211af
SHA1

bde4378795cbaadf5334302231e29eb283df8040
SHA256

5667b84da3c323b2a49477e46476adfaaf4c76bc05f9d6ca1102a22f8610213e
SHA512

0147b9a2b774549cdcb5b61790185c7dc63065778ced80eaed3e8ad4790aaaef1a940baf8d829852b28a1031cfd05053c38b57dc47625ab68eb4bc26af686691
SSDEEP

49152:SnAQqMSPbcBVQej/Pd7+KnT2becwT6DGMIBHuLZyLUcRhRt/IbmwW6VH:+DqPoBhzPwKSbevWSdOLZSPebdWgH

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3129) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2028 mssecsvc.exe
2544 mssecsvc.exe
2592 tasksche.exe
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

pid	process
2028	mssecsvc.exe
2544	mssecsvc.exe
2592	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\Content\CachePrefix	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}\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
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\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}\WpadDecisionTime = 20cba2c16aa0da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e5-93-0e-bb-31	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e5-93-0e-bb-31\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e5-93-0e-bb-31\WpadDecisionTime = 20cba2c16aa0da01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0122000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e5-93-0e-bb-31\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{FB11FAEB-9F3A-46BA-9E6F-59FBED2ED9EE}\02-e5-93-0e-bb-31	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\UNCAsIntranet = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1132 wrote to memory of 2012	1132	rundll32.exe	rundll32.exe
PID 1132 wrote to memory of 2012	1132	rundll32.exe	rundll32.exe
PID 1132 wrote to memory of 2012	1132	rundll32.exe	rundll32.exe
PID 1132 wrote to memory of 2012	1132	rundll32.exe	rundll32.exe
PID 1132 wrote to memory of 2012	1132	rundll32.exe	rundll32.exe
PID 1132 wrote to memory of 2012	1132	rundll32.exe	rundll32.exe
PID 1132 wrote to memory of 2012	1132	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 2028	2012	rundll32.exe	mssecsvc.exe
PID 2012 wrote to memory of 2028	2012	rundll32.exe	mssecsvc.exe
PID 2012 wrote to memory of 2028	2012	rundll32.exe	mssecsvc.exe
PID 2012 wrote to memory of 2028	2012	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2056acb40efe2135577dd836f22211af_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1132

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2056acb40efe2135577dd836f22211af_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2012

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2028

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2592

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:2544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
286d8c40788a6aa2aedfa32d3fa82856

SHA1
42324794ed0d6a0c9132c72510d10e74cc118454

SHA256
1f18d12690e66c2a0c2ec0ac2587af2b86aaf50cb2121aef0f35103455b24909

SHA512
d7527450702940cdfbfa7e227cebcd7bc0f93ccb5ae1547302f580bdd0b18f6a7f2ff3c3d58d80dfbf490df6c8c42176a74b09ec3d54bd1bda0403419a7de2e8

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
e147d2da9ea975e83cd1d0d7a022f6a4

SHA1
34a7b1f8ca82bbf1448b2ae91c1bae829d5ba5ce

SHA256
f273246e265b855856790bc036c9a23089a5289ce75645af5936d6e5c99bdddc

SHA512
0ea7d55ea6af2035125ff3626a1a95c903e51ec165ed45ede9f4032683115927d142c3ce3ffefcae8248de9a6a9f59a87c728326b045f18ef86d5036f284b638

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads