wannacry | e9540a7655316dcbad7651d3f9535fdc319cc36a0d65a87dbfdac21617bf1600

General

Target

2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Size

3.6MB
MD5

28e5fbf068d9415f6ae6cf4cf858348a
SHA1

4258b978ec3468f22894ea03723b232522d884ef
SHA256

e9540a7655316dcbad7651d3f9535fdc319cc36a0d65a87dbfdac21617bf1600
SHA512

ee42d5ec59148e717b082750e47423a49ed4960223078ba4d4524d88d552f7b82b1b28a9f4e6505c21ef2b626050d91119988e0c4a27e1dcb5fae81b666857d3
SSDEEP

98304:yDqPoBhz1aRxcSUDk36SAyxWa9P593R8yAVp2HI:yDqPe1Cxcxk3ZAladzR8yc4HI

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3090) 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
2808	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	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.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	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-a8-d1-25-f0-2c	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8F439441-A87B-403B-95F5-27212D675AAA}\36-a8-d1-25-f0-2c	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f016f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8F439441-A87B-403B-95F5-27212D675AAA}\WpadNetworkName = "Network 3"	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-a8-d1-25-f0-2c\WpadDecisionReason = "1"	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8F439441-A87B-403B-95F5-27212D675AAA}	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8F439441-A87B-403B-95F5-27212D675AAA}\WpadDecision = "0"	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-a8-d1-25-f0-2c\WpadDecision = "0"	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8F439441-A87B-403B-95F5-27212D675AAA}\WpadDecisionReason = "1"	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8F439441-A87B-403B-95F5-27212D675AAA}\WpadDecisionTime = 503d832c58a1db01	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-a8-d1-25-f0-2c\WpadDecisionTime = 503d832c58a1db01	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:664
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2808

C:\Users\Admin\AppData\Local\Temp\2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-03-30_28e5fbf068d9415f6ae6cf4cf858348a_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2804

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
fb8532a01538fa207e5b34951ee8dc54

SHA1
8d3a425cdde2d91945e9bea4bb341e86966d6750

SHA256
77755df135b055dfa16d1147c30164f2750a5aa28f1718122d3d5ff4f1a8ba2c

SHA512
9e86db7d4a500c4b207bc16a841191aaf9c6bc23f5274470efbc8beae1fb25feb965286c8f75f3995cd1895322f19da951c83726d8514f3b27a341ee436bdfc7

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