wannacry | 3e5c35fca4c6ab1655e58e7ba76aa2a250254009a256cdaf4c5964b112f46287

General

Target

54c48809de13c43efc75791debe5955c_JaffaCakes118.dll
Size

5.0MB
MD5

54c48809de13c43efc75791debe5955c
SHA1

29fb15e99dd61101470cb837c06bbd15796e2969
SHA256

3e5c35fca4c6ab1655e58e7ba76aa2a250254009a256cdaf4c5964b112f46287
SHA512

51d3ca0f14ca9a1722713010e22d1e5e5a18790cbb5832366e6498e5570b734c290d21fd3d62ec23292e8e18f17cf56efcef3ccf231ad2d2c63d02d7af2c76a4
SSDEEP

98304:+DqPoBhz1aRxcSUDkvEdhvxWa9P593R8yAVp2H:+DqPe1CxcxkvEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3318) 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

2800 mssecsvc.exe
2620 mssecsvc.exe
2676 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
2800	mssecsvc.exe
2620	mssecsvc.exe
2676	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0129000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{68E32004-5BEC-4518-8DDA-ED862D5244D0}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{68E32004-5BEC-4518-8DDA-ED862D5244D0}\86-f5-5c-3c-58-cb	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-f5-5c-3c-58-cb\WpadDecisionTime = e069825521a9da01	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\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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{68E32004-5BEC-4518-8DDA-ED862D5244D0}\WpadDecisionTime = e069825521a9da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	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\{68E32004-5BEC-4518-8DDA-ED862D5244D0}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{68E32004-5BEC-4518-8DDA-ED862D5244D0}\WpadNetworkName = "Network 3"	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\ZoneMap\	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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{68E32004-5BEC-4518-8DDA-ED862D5244D0}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-f5-5c-3c-58-cb	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-f5-5c-3c-58-cb\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-f5-5c-3c-58-cb\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2916 wrote to memory of 2132	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2132	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2132	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2132	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2132	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2132	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2132	2916	rundll32.exe	rundll32.exe
PID 2132 wrote to memory of 2800	2132	rundll32.exe	mssecsvc.exe
PID 2132 wrote to memory of 2800	2132	rundll32.exe	mssecsvc.exe
PID 2132 wrote to memory of 2800	2132	rundll32.exe	mssecsvc.exe
PID 2132 wrote to memory of 2800	2132	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\54c48809de13c43efc75791debe5955c_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2916

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\54c48809de13c43efc75791debe5955c_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2132

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2800

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2676

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:2620

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
e8de8210a18474609a2c1cb8d3478e8e

SHA1
0ca4c288766ffe7d781eb614dfa0749d83309119

SHA256
1421834d975473ef9e32bc6a0f3390b85eb2ad94394862f2ecbcc0afa902de9e

SHA512
68d2f2eeb9902616e33c4355ef4fcdc90e3dda692cb1c0b81259dae4401ac66bbd52865222731ce3557f27c1862f30eb4546023e349347e8ee01dff62be8bfdd

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
b2f70a339fff3f13cc4f4689f5c6f0fb

SHA1
4a3a2fa748cdb3e848ad2b86d39fcc3422363d93

SHA256
005b069f3c712cb6df1bbe0e6301266c71e40634816bf7fe292f137785f81ec3

SHA512
46de40699aeae6afbc4a11de30b3dea3d2ca78c76ceff19ad401729b204970e85909430cb099603fdc50d545b1c2c73fc66d43214a47f505db6cee96f53f4382

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads