wannacry | 975f0c9a2bb4a0bf2a022af615452e6049577899495cd7bdfb0a9fa6084964ff

General

Target

20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Size

3.6MB
MD5

cd797e42ff018db9df58d8be0fbb9b29
SHA1

feebc9f49bd28756c02950fc39292d858e4e5b65
SHA256

975f0c9a2bb4a0bf2a022af615452e6049577899495cd7bdfb0a9fa6084964ff
SHA512

e5fb2c395a3e08e7cbecdb0c2bffaff2266150bf890008127a882fe2d6d7a141178c16166d1146d9efe6951ca16750f96f516846cc9969864260ce3327b07840
SSDEEP

98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9M/LvuDOO:yDqPe1Cxcxk3ZAEUaOyOO

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3281) 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

Processes:

tasksche.exe

pid process

2556 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
2556	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe

Drops file in Windows directory 1 IoCs

Processes:

20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe

description ioc process

File created C:\WINDOWS\tasksche.exe 20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D7D33897-E920-4B4C-BF10-C6A364CD478E}\WpadDecisionReason = "1"	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-f1-3d-f4-cb-9d\WpadDecisionTime = f0f9bcd884b0da01	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-f1-3d-f4-cb-9d\WpadDecision = "0"	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-f1-3d-f4-cb-9d\WpadDecisionReason = "1"	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D7D33897-E920-4B4C-BF10-C6A364CD478E}\WpadDecision = "0"	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0085000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D7D33897-E920-4B4C-BF10-C6A364CD478E}	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D7D33897-E920-4B4C-BF10-C6A364CD478E}\WpadDecisionTime = f0f9bcd884b0da01	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D7D33897-E920-4B4C-BF10-C6A364CD478E}\WpadNetworkName = "Network 3"	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-f1-3d-f4-cb-9d	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D7D33897-E920-4B4C-BF10-C6A364CD478E}\82-f1-3d-f4-cb-9d	20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe

C:\Users\Admin\AppData\Local\Temp\20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe"
1⤵
- Drops file in Windows directory
PID:2648

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
2⤵
- Executes dropped EXE
PID:2556

C:\Users\Admin\AppData\Local\Temp\20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe
C:\Users\Admin\AppData\Local\Temp\20240527cd797e42ff018db9df58d8be0fbb9b29wannacry.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2828

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

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
8954aa1e2197ee0feb97dd7e298caba8

SHA1
deec156f38022ade95934930f63f2108e443cb06

SHA256
d642955164aebf8a46cf4971baf6d4431caafc0a08af405455ea7b1e698b1a61

SHA512
c3cf0181a5eba4dd42e5c1b133e1b4dafe3aa07c821fa5f7748dea26674cb5cd7df36ebd72c5f10d2449b12499d91d723e61d37e7105b230b609a32b996e3365

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