wannacry | fe1e65b62cd7d316362f47bf5edb24f97c791ebc391011e221df8b8ebef7016a

General

Target

b325f5b31f894f5c5292d7dafc95e563_JaffaCakes118.dll
Size

5.0MB
MD5

b325f5b31f894f5c5292d7dafc95e563
SHA1

817d98c51fb829f295b5524beddef41ae7bcbcbd
SHA256

fe1e65b62cd7d316362f47bf5edb24f97c791ebc391011e221df8b8ebef7016a
SHA512

4642b86eff510a8effba55fac1b4cefbb4d03afc2334169ab2c5563ccbb44444315d2429cc33608afe7523968456447278502b42dc731dad0347c432adfeb8b9
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAfSIfb:+DqPoBhz1aRxcSUDk36SAyB

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2658) 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

2236 mssecsvc.exe
2792 mssecsvc.exe
2220 tasksche.exe

pid	process
2236	mssecsvc.exe
2792	mssecsvc.exe
2220	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\Wpad\{30DE2507-6098-4C96-92D5-F92980EA6F42}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{30DE2507-6098-4C96-92D5-F92980EA6F42}\9e-b5-85-d4-91-ef	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0020000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{30DE2507-6098-4C96-92D5-F92980EA6F42}\WpadDecisionTime = d03f17f7dbbfda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{30DE2507-6098-4C96-92D5-F92980EA6F42}\WpadDecision = "0"	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{30DE2507-6098-4C96-92D5-F92980EA6F42}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{30DE2507-6098-4C96-92D5-F92980EA6F42}\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\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-b5-85-d4-91-ef\WpadDecisionTime = d03f17f7dbbfda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-b5-85-d4-91-ef\WpadDecision = "0"	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\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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-b5-85-d4-91-ef	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-b5-85-d4-91-ef\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2424 wrote to memory of 1928	2424	rundll32.exe	rundll32.exe
PID 2424 wrote to memory of 1928	2424	rundll32.exe	rundll32.exe
PID 2424 wrote to memory of 1928	2424	rundll32.exe	rundll32.exe
PID 2424 wrote to memory of 1928	2424	rundll32.exe	rundll32.exe
PID 2424 wrote to memory of 1928	2424	rundll32.exe	rundll32.exe
PID 2424 wrote to memory of 1928	2424	rundll32.exe	rundll32.exe
PID 2424 wrote to memory of 1928	2424	rundll32.exe	rundll32.exe
PID 1928 wrote to memory of 2236	1928	rundll32.exe	mssecsvc.exe
PID 1928 wrote to memory of 2236	1928	rundll32.exe	mssecsvc.exe
PID 1928 wrote to memory of 2236	1928	rundll32.exe	mssecsvc.exe
PID 1928 wrote to memory of 2236	1928	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b325f5b31f894f5c5292d7dafc95e563_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2424

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b325f5b31f894f5c5292d7dafc95e563_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1928

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2236

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2220

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:2792

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
3f435c1a39383f0b66f2e8110f1dc3ff

SHA1
1aeb08f40456637ec3fbcd9cee4a277e863a5413

SHA256
b5b68c15e7a6d200bd921156aceecc1684c3fff9120a7d713b143702bba4cc8e

SHA512
4fbf2d6725628fb7f7e84cc7acb5d2a6310b65564e4754e3b949ceeab47eb8191b90d5cc8c1225ec024058b3d03c0dfdb0da2c043d3d99706e5af45fa2184018

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
bcc815a31a7e1b4f34ec7ab230c2745d

SHA1
65d27c18a0cdd28259837c9f43ba05e36f8fece3

SHA256
39eb70821089751e0923c8898fbaf075da44ca8a0af167ea4edc10442d3bf087

SHA512
d0cfa32214afce4b1c9a416f39ec426c4e62e541e27e1890adce5c99f9b8fb7d41eef363189b54f971140edf1ce4f70d60eac80f6a867c21f224ac5b65655f31

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads