wannacry | 9611482523c3c6b8f4d33ce3bb921d3ee8b466435b74982c912c20e47951e479

General

Target

b28c928b3771452c46377792932e0548_JaffaCakes118.dll
Size

5.0MB
MD5

b28c928b3771452c46377792932e0548
SHA1

dc88d6186cb3d8a545d8da8ae8621d7bb4b7a960
SHA256

9611482523c3c6b8f4d33ce3bb921d3ee8b466435b74982c912c20e47951e479
SHA512

5e9cc140ced61a4e78bcb94187fadd3006dac7d3ba2e02f77d132e9985a8aafa2fe8fa38b25207b224a3cb94f503cc63df3af1062562789b7d88e8a6cc8c95ba
SSDEEP

98304:+DqPoBhz1asSbevWSdOLZsxWxPebdWPp2:+DqPe1ubNiOLFwbd64

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2652) 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

2804 mssecsvc.exe
2656 mssecsvc.exe
2636 tasksche.exe

pid	process
2804	mssecsvc.exe
2656	mssecsvc.exe
2636	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 (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	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-d6-80-27-fd-8e\WpadDecision = "0"	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
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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5E345AFA-3B2B-4AC6-BFB8-DA93A76BB292}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5E345AFA-3B2B-4AC6-BFB8-DA93A76BB292}\f6-d6-80-27-fd-8e	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-d6-80-27-fd-8e\WpadDecisionTime = d0be964ac6bfda01	mssecsvc.exe
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\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5E345AFA-3B2B-4AC6-BFB8-DA93A76BB292}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5E345AFA-3B2B-4AC6-BFB8-DA93A76BB292}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-d6-80-27-fd-8e	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-d6-80-27-fd-8e\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	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\Content\CachePrefix	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5E345AFA-3B2B-4AC6-BFB8-DA93A76BB292}\WpadDecisionReason = "1"	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\ZoneMap\	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f009c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{5E345AFA-3B2B-4AC6-BFB8-DA93A76BB292}\WpadDecisionTime = d0be964ac6bfda01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1728 wrote to memory of 1740	1728	rundll32.exe	rundll32.exe
PID 1728 wrote to memory of 1740	1728	rundll32.exe	rundll32.exe
PID 1728 wrote to memory of 1740	1728	rundll32.exe	rundll32.exe
PID 1728 wrote to memory of 1740	1728	rundll32.exe	rundll32.exe
PID 1728 wrote to memory of 1740	1728	rundll32.exe	rundll32.exe
PID 1728 wrote to memory of 1740	1728	rundll32.exe	rundll32.exe
PID 1728 wrote to memory of 1740	1728	rundll32.exe	rundll32.exe
PID 1740 wrote to memory of 2804	1740	rundll32.exe	mssecsvc.exe
PID 1740 wrote to memory of 2804	1740	rundll32.exe	mssecsvc.exe
PID 1740 wrote to memory of 2804	1740	rundll32.exe	mssecsvc.exe
PID 1740 wrote to memory of 2804	1740	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b28c928b3771452c46377792932e0548_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1728

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b28c928b3771452c46377792932e0548_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1740

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2804

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2636

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:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
884c6830d1099d10d285a5da465b62b3

SHA1
c7daa380e6fad971495f6890c57660c95f0e0bf5

SHA256
389f76549d6165d8428aa532e91e1b3cd6c23a834d245f9724cf3306b19656df

SHA512
f0d6ec54018e2852675a69c181d033fe4b717a6683fae8e108f29f27fa3ed19e94f97af9806add6d346ed952954634b9d2569ca6df3e0d114e22d7de06571bc1

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
64a1cc9fd45dd25d65e8bccb44fb6a2e

SHA1
601dac2fab3afebf40b8792ec0ae902ded11651c

SHA256
664e0ae46581cb76eb5241da08cf2b5be72828d0d06bacf3cd07b21b51a91f77

SHA512
e50fb3d0cb1145215ac8afc08a0a55d38e3edf234b56444c1654ef5217e3f6eff4601889024dd5b0131c6ee9250e89ba85fee8a6d907028917859ad34e051316

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads