wannacry | b06433c11864a55a564e06d1e2e1e98ff2bbd7053a5a2ec473d6c98bc2fe891f

General

Target

6195fe77464fd40efbe06b948db5d5d1_JaffaCakes118.dll
Size

5.0MB
MD5

6195fe77464fd40efbe06b948db5d5d1
SHA1

926db72ac0901a9eca93fc3f49378677089fe74b
SHA256

b06433c11864a55a564e06d1e2e1e98ff2bbd7053a5a2ec473d6c98bc2fe891f
SHA512

31368c495415cdd27ce6fb34c4421fe7a68438235f6de3575d1e39b61395174542b4bec8d509b1dcff85edce30b3c2d036b2ef28cb7dc84d0ee05880794343fc
SSDEEP

49152:znAQqMSPbcBVQej/1INRYX0R8yAH1plAH:TDqPoBhz1aRYX0R8yAVp2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2977) 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

2256 mssecsvc.exe
2620 mssecsvc.exe
2548 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
2256	mssecsvc.exe
2620	mssecsvc.exe
2548	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 (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	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-29-69-aa-76-fa\WpadDecision = "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\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A45BD6BC-AC90-45A5-AE79-70BC001F19AF}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-29-69-aa-76-fa	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	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0028000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A45BD6BC-AC90-45A5-AE79-70BC001F19AF}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A45BD6BC-AC90-45A5-AE79-70BC001F19AF}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A45BD6BC-AC90-45A5-AE79-70BC001F19AF}\WpadDecisionTime = 4089c1f31cabda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A45BD6BC-AC90-45A5-AE79-70BC001F19AF}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	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\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A45BD6BC-AC90-45A5-AE79-70BC001F19AF}\16-29-69-aa-76-fa	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-29-69-aa-76-fa\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-29-69-aa-76-fa\WpadDecisionTime = 4089c1f31cabda01	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2932 wrote to memory of 1688	2932	rundll32.exe	rundll32.exe
PID 2932 wrote to memory of 1688	2932	rundll32.exe	rundll32.exe
PID 2932 wrote to memory of 1688	2932	rundll32.exe	rundll32.exe
PID 2932 wrote to memory of 1688	2932	rundll32.exe	rundll32.exe
PID 2932 wrote to memory of 1688	2932	rundll32.exe	rundll32.exe
PID 2932 wrote to memory of 1688	2932	rundll32.exe	rundll32.exe
PID 2932 wrote to memory of 1688	2932	rundll32.exe	rundll32.exe
PID 1688 wrote to memory of 2256	1688	rundll32.exe	mssecsvc.exe
PID 1688 wrote to memory of 2256	1688	rundll32.exe	mssecsvc.exe
PID 1688 wrote to memory of 2256	1688	rundll32.exe	mssecsvc.exe
PID 1688 wrote to memory of 2256	1688	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6195fe77464fd40efbe06b948db5d5d1_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2932

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6195fe77464fd40efbe06b948db5d5d1_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1688

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2256

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2548

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
6a3ced7c1f61bf06223092711350903a

SHA1
c0ef7cfcac0868432802ae7494dde7ed26c7a871

SHA256
39be70280cb662f514a595efe7c714d9657ff698edeae4cb443cb320a4846437

SHA512
4ba06965e208f736989e38736a3da5aaf56aa0b5faad987b05ff67f59082ff4e67d6b8de711dc0734bb52999af9b7d19b9448ae70edab59e69b524713018470c

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
b046fe66849a402a018fe23bd304b370

SHA1
031901528dbee22886dc84030b80f08e31a0703e

SHA256
9e0446a754ed01ec7c2f962d9eb15c526f76d6bd6b2fc0f34c2c83f9fd2903f5

SHA512
535d491faac514ad418ee8efd741f0ac04e2e1c4241b3d4ed904c9f4841ff0a7956a6ae7d4e6e66a5de90a612dc67fd6db7f7155695698f6a8d1117bbe480d29

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads