wannacry | 20c7cd8ef7ab0b594e3bc68648b5a56102a1512e1a1e1d9114e490c12d89f291

General

Target

f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Size

3.6MB
MD5

f841b8316e702b3a3ccfb1efb137b219
SHA1

2af52327e1d4d3de284f7a0f76b669126506c676
SHA256

20c7cd8ef7ab0b594e3bc68648b5a56102a1512e1a1e1d9114e490c12d89f291
SHA512

ca3a6c8ea5cae088099bbc88316ca24f098f9bce1762d6f41f741ae1cfc7b7e848141e1b49201a2e1eb5a818b3d95124c01f3c7ac6ba9b32a7e02abe9e31c15f
SSDEEP

98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9+3R8yAVp2HI:yDqPe1Cxcxk3ZAEUayR8yc4HI

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3236) 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 1 IoCs

pid	Process
2992	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

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-72-35-e6-83-b7\WpadDecisionTime = 206470f00510db01	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-72-35-e6-83-b7\WpadDecision = "0"	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D8C1C853-F87A-4376-B4B5-2088D5425D64}	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D8C1C853-F87A-4376-B4B5-2088D5425D64}\WpadDecisionReason = "1"	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c3000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D8C1C853-F87A-4376-B4B5-2088D5425D64}\WpadDecisionTime = 206470f00510db01	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D8C1C853-F87A-4376-B4B5-2088D5425D64}\WpadDecision = "0"	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-72-35-e6-83-b7	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D8C1C853-F87A-4376-B4B5-2088D5425D64}\7a-72-35-e6-83-b7	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D8C1C853-F87A-4376-B4B5-2088D5425D64}\WpadNetworkName = "Network 3"	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-72-35-e6-83-b7\WpadDecisionReason = "1"	f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:1048
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2992

C:\Users\Admin\AppData\Local\Temp\f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe
C:\Users\Admin\AppData\Local\Temp\f841b8316e702b3a3ccfb1efb137b219_JaffaCakes118.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2272

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
3e4f67a02bd444ec9c8c6efed09c34de

SHA1
6cc91c225b392bcd8d4fad8c13c6655891b37e65

SHA256
d81a02c261d2b1fbd5e63ab7868e9e34a008c241546532626b152a2974081850

SHA512
3c57e85a6a31c2b104a45ab022947e727be32253a673c2583c3b2fa94b659e9fedbe45939bb5ba7979bd1d7520ef14727834521b0a0ffaca60d6f269df03046e

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Analysis

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