wannacry | c2be1e3f4493f5bdaf1fea487609eb0f94eebbfc900ea629eea09b63f62d65c8

General

Target

2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Size

5.0MB
MD5

856dcc871eaa1ed42aabb5e5affc08ab
SHA1

3bba098a1ca8245e6eb2f1a6781a092d1e26fce6
SHA256

c2be1e3f4493f5bdaf1fea487609eb0f94eebbfc900ea629eea09b63f62d65c8
SHA512

825d0570d5385851422b7907ce43ca732dd07bb929feee41dbd3cffa7b09734a77e94cc85ddb4f0235d0a7e694d4225b5aae165d0c3c17c2a1e9d9e89e0c6548
SSDEEP

98304:XDqzz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2Hu:XDqn1Cxcxk3ZAEUadzR8yc4Hu

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 (3138) 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
2700	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_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_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_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{55A16186-0D08-4D6C-9D1F-AF23C6A18A9C}	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{55A16186-0D08-4D6C-9D1F-AF23C6A18A9C}\WpadDecisionReason = "1"	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{55A16186-0D08-4D6C-9D1F-AF23C6A18A9C}\WpadDecisionTime = 50d9d79e3ba1db01	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-84-29-dc-c1-e8	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{55A16186-0D08-4D6C-9D1F-AF23C6A18A9C}\52-84-29-dc-c1-e8	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-84-29-dc-c1-e8\WpadDecisionTime = 50d9d79e3ba1db01	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-84-29-dc-c1-e8\WpadDecision = "0"	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00f1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{55A16186-0D08-4D6C-9D1F-AF23C6A18A9C}\WpadDecision = "0"	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{55A16186-0D08-4D6C-9D1F-AF23C6A18A9C}\WpadNetworkName = "Network 3"	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-84-29-dc-c1-e8\WpadDecisionReason = "1"	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:1804
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2700

C:\Users\Admin\AppData\Local\Temp\2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-03-30_856dcc871eaa1ed42aabb5e5affc08ab_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1340

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

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
1bbffaa7de860d78de68c363a9c9963b

SHA1
f28ab9e4afabb047f63265640efac8d3b1e00e4a

SHA256
d1b3ad243b579345c41ff92be36d71c6b9c66d04aacbec7820b9453615a58a3a

SHA512
317012fda97f68e68c68e4df44df0a13d391c9852263d53fc2e63fd5f70726cfab6736a37cd8def54da90c4f637c872e3ba2c2d6e192d1be4f59140b3b09eb12

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