wannacry | 7800a081014b43a591969d71dd49157ba3babace87a39d143120e82c677927d6

General

Target

272c3e75b5b82f20d63cca13f0ab815a_JaffaCakes118.dll
Size

5.0MB
MD5

272c3e75b5b82f20d63cca13f0ab815a
SHA1

c98828bdd1fe78a44562fdb983b79763cd1017e1
SHA256

7800a081014b43a591969d71dd49157ba3babace87a39d143120e82c677927d6
SHA512

6018b2819116d8c13dfa41a92095c19e5826936ed5a43868db2e4ac2e09d0aa67a26615d8a36142632d54401645936cf03c7243d7ee3ff3db0abe501d33fb5ca
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQ:+DqPoBhz1aRxcSUDk

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3302) 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

1880 mssecsvc.exe
2512 mssecsvc.exe
2616 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
1880	mssecsvc.exe
2512	mssecsvc.exe
2616	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\ZoneMap\	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6DEFC3CB-1B7E-4923-BBD6-B2FEC944D511}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-35-df-dc-3d-6b	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6DEFC3CB-1B7E-4923-BBD6-B2FEC944D511}\42-35-df-dc-3d-6b	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-35-df-dc-3d-6b\WpadDecisionTime = c0c810e69da1da01	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\Wpad\42-35-df-dc-3d-6b\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f007a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6DEFC3CB-1B7E-4923-BBD6-B2FEC944D511}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6DEFC3CB-1B7E-4923-BBD6-B2FEC944D511}\WpadDecisionTime = c0c810e69da1da01	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 (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
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
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\{6DEFC3CB-1B7E-4923-BBD6-B2FEC944D511}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6DEFC3CB-1B7E-4923-BBD6-B2FEC944D511}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\42-35-df-dc-3d-6b\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2248 wrote to memory of 2168	2248	rundll32.exe	rundll32.exe
PID 2248 wrote to memory of 2168	2248	rundll32.exe	rundll32.exe
PID 2248 wrote to memory of 2168	2248	rundll32.exe	rundll32.exe
PID 2248 wrote to memory of 2168	2248	rundll32.exe	rundll32.exe
PID 2248 wrote to memory of 2168	2248	rundll32.exe	rundll32.exe
PID 2248 wrote to memory of 2168	2248	rundll32.exe	rundll32.exe
PID 2248 wrote to memory of 2168	2248	rundll32.exe	rundll32.exe
PID 2168 wrote to memory of 1880	2168	rundll32.exe	mssecsvc.exe
PID 2168 wrote to memory of 1880	2168	rundll32.exe	mssecsvc.exe
PID 2168 wrote to memory of 1880	2168	rundll32.exe	mssecsvc.exe
PID 2168 wrote to memory of 1880	2168	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\272c3e75b5b82f20d63cca13f0ab815a_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2248

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\272c3e75b5b82f20d63cca13f0ab815a_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2168

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1880

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2616

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:2512

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
7ea7b09c6dea9bbbdaabd503bd6ad8a3

SHA1
2d13042c833b6195f83e72bf35777ac296a33511

SHA256
7aa94713a0fcd8cb24b324d4e1f16388c0745855097802574417239e4b3b429b

SHA512
07b16147c11079e34f06da1b0b79118cc49f68ff9d7f7dbb4272a33213e2e3a107a557b642abb566b1c2b11809383f7f7d90b26da58b94ca3f60a0e881871bbd

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
2bf26b644c7b4e283f66ac695d89a3d5

SHA1
28e6b6ae553529d751e432a84a890588c5b86689

SHA256
dc8a91ed1eb77f2dce2f71533b43cd0322e5b64e83152823b147756187f6b1f2

SHA512
8ac3056a82eb422ace8323e6b5f005bf65641f60357fc05dd55cbad73d4e18aa35a43fb6215a68ac27c0e0f877e4f88f0133c6c61ac86d50e00fcaf8e89bc9ab

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads