wannacry | 4f2295253243f67e9d4cae7499c51a7eeec879aa4b787f6e3ef47b45602b15d4

General

Target

61465c15986aed38bf65441bf98c3648_JaffaCakes118.dll
Size

5.0MB
MD5

61465c15986aed38bf65441bf98c3648
SHA1

063ad2bc8a7016d83f3754cb4f298d1392c64b88
SHA256

4f2295253243f67e9d4cae7499c51a7eeec879aa4b787f6e3ef47b45602b15d4
SHA512

827ba0bbc83c1fa3bac0092a95758ec8131fee2455bc96a2dd30e41f5a52482caecbea5f064f02c802ce77b2a6d810a27dbce77c5b4c822c7663f74cf0d4ce62
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAVAMEcaEau3R8yA:+DqPoBhz1aRxcSUDk36SAC593R8yA

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3247) 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

2588 mssecsvc.exe
2908 mssecsvc.exe
2764 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
2588	mssecsvc.exe
2908	mssecsvc.exe
2764	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
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
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\Wpad\{A69448D8-17AD-442B-A3B1-F36838272CA0}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f005a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A69448D8-17AD-442B-A3B1-F36838272CA0}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A69448D8-17AD-442B-A3B1-F36838272CA0}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-75-a8-fb-31-e5	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-75-a8-fb-31-e5\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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\Wpad\{A69448D8-17AD-442B-A3B1-F36838272CA0}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A69448D8-17AD-442B-A3B1-F36838272CA0}\ee-75-a8-fb-31-e5	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-75-a8-fb-31-e5\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	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 (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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A69448D8-17AD-442B-A3B1-F36838272CA0}\WpadDecisionTime = e018775b0cabda01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-75-a8-fb-31-e5\WpadDecisionTime = e018775b0cabda01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2984 wrote to memory of 2916	2984	rundll32.exe	rundll32.exe
PID 2984 wrote to memory of 2916	2984	rundll32.exe	rundll32.exe
PID 2984 wrote to memory of 2916	2984	rundll32.exe	rundll32.exe
PID 2984 wrote to memory of 2916	2984	rundll32.exe	rundll32.exe
PID 2984 wrote to memory of 2916	2984	rundll32.exe	rundll32.exe
PID 2984 wrote to memory of 2916	2984	rundll32.exe	rundll32.exe
PID 2984 wrote to memory of 2916	2984	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2588	2916	rundll32.exe	mssecsvc.exe
PID 2916 wrote to memory of 2588	2916	rundll32.exe	mssecsvc.exe
PID 2916 wrote to memory of 2588	2916	rundll32.exe	mssecsvc.exe
PID 2916 wrote to memory of 2588	2916	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\61465c15986aed38bf65441bf98c3648_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2984

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\61465c15986aed38bf65441bf98c3648_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2916

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2588

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2764

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:2908

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
444e929c2a2e2a97edcdef0366166ce7

SHA1
dda57fa54b57647b28f75ae1f79909d46f89dc5a

SHA256
c8c741994708d0f885abc522d641c6bb32bb7b165456ed6b93878c1ec478aa32

SHA512
d3395995c59700005559cb220c1cd140d5d615c90fc540082340331f3a096a7592c6ea3e106371b6fc9815b37cf5f0ee674df4efafac5507340b826fd542fdd3

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

MD5
f18d289a378f3471a464ce5bf46ab1d6

SHA1
c038949783e280f19417dc0fbf0d21d85c7190b2

SHA256
d6340bc710447a62e57183f27f4f1f13c73803f7a6664509b8559e0358cad038

SHA512
18107d6d62107857311f7c3646c1f28bc447c13cbd2f208cb56155af99bfad380a1c43380b42a652f236a9445adde8a6b35441a03fb97eaca173812e03f9f3cd

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads