wannacry | 7068344e1b0ae0acc5aacbfa277050294c7cb4172bec49b60a93dda551422eed

General

Target

382805f9620d3f33a18d371150087a9e_JaffaCakes118.dll
Size

5.0MB
MD5

382805f9620d3f33a18d371150087a9e
SHA1

49496d39044d9028fdb9a203c48646bb5477091a
SHA256

7068344e1b0ae0acc5aacbfa277050294c7cb4172bec49b60a93dda551422eed
SHA512

af0c492dfbfd4f59f15a614deec18ff02d6f59e988ddb34e3ae8666ca9f3371ab7c7a82443b2929172e0e8d910252beace2ac6d1d116e9c92e231f3b6ddb79a5
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593RLyAVp2H:+DqPe1Cxcxk3ZAEUadzRLyc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3219) 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

2136 mssecsvc.exe
1596 mssecsvc.exe
2860 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
2136	mssecsvc.exe
1596	mssecsvc.exe
2860	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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
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\{822F5F2E-9447-4FC2-9826-69DCB4956D38}\WpadDecisionTime = 307e986721a4da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{822F5F2E-9447-4FC2-9826-69DCB4956D38}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-bc-26-6c-29-8a	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\{822F5F2E-9447-4FC2-9826-69DCB4956D38}\06-bc-26-6c-29-8a	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-bc-26-6c-29-8a\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-bc-26-6c-29-8a\WpadDecisionTime = 307e986721a4da01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{822F5F2E-9447-4FC2-9826-69DCB4956D38}\WpadNetworkName = "Network 3"	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\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\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0109000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{822F5F2E-9447-4FC2-9826-69DCB4956D38}\WpadDecisionReason = "1"	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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
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\Wpad\{822F5F2E-9447-4FC2-9826-69DCB4956D38}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-bc-26-6c-29-8a\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1652 wrote to memory of 1696	1652	rundll32.exe	rundll32.exe
PID 1652 wrote to memory of 1696	1652	rundll32.exe	rundll32.exe
PID 1652 wrote to memory of 1696	1652	rundll32.exe	rundll32.exe
PID 1652 wrote to memory of 1696	1652	rundll32.exe	rundll32.exe
PID 1652 wrote to memory of 1696	1652	rundll32.exe	rundll32.exe
PID 1652 wrote to memory of 1696	1652	rundll32.exe	rundll32.exe
PID 1652 wrote to memory of 1696	1652	rundll32.exe	rundll32.exe
PID 1696 wrote to memory of 2136	1696	rundll32.exe	mssecsvc.exe
PID 1696 wrote to memory of 2136	1696	rundll32.exe	mssecsvc.exe
PID 1696 wrote to memory of 2136	1696	rundll32.exe	mssecsvc.exe
PID 1696 wrote to memory of 2136	1696	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\382805f9620d3f33a18d371150087a9e_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1652

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\382805f9620d3f33a18d371150087a9e_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1696

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2136

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2860

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:1596

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
c835db2d7fe1b37c862321a41c6f6afe

SHA1
792d71d2e63fdc3b194845c2b669ff3208616f23

SHA256
51589762cac08a47aa359f2d427663c8044b30425ed90edffaddeff2bb67e9fc

SHA512
194fe1fe82bfcdb1498cb622b21da450e2442ab5fb573c3ea7c81934481cd19bc74838c9e9e161075dc8573f7288bd2b331e3a38d776fbb9edee544a0d8e7639

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
2156875d718aded2f22d8c756348a823

SHA1
3645f5af7ced9865b6c98eecb20121e13e2ecdb6

SHA256
7060365d5de29a22723648b17c6c83014fabebd768b8203cec6e5864cbfe66ce

SHA512
aaab463755b0e81f9aa6c32c5b25ee062bab020536c90d59e5abd9a178482547346c3967e4b651572f20cfc687828daf27d0d97569385bf86a03f8bd3995bfab

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads