wannacry | bc548a8fa6508b7e0a71af7a7c4f87cc629ff6ed2ba1a26f9cc9862b6f41e2ca

General

Target

2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Size

3.6MB
MD5

2a73e5b0b90e164be00f5cfdd0bb0cac
SHA1

0039f784eead69f0d2222072809da648753cfd09
SHA256

bc548a8fa6508b7e0a71af7a7c4f87cc629ff6ed2ba1a26f9cc9862b6f41e2ca
SHA512

7d5b3efe8a300c18ccca07d23247949b47bae661116196bde35b7eff77b6195a013774e614be022c349afb9f9e8725ae1f5acc7fd652a02f1bb9328fd74ea60c
SSDEEP

98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8Vj08:yDqPe1Cxcxk3ZAEUadzR83

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3203) 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
2516	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	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_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	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B514C971-6C1B-41C5-B2F4-8FF54FCC8368}\WpadDecisionTime = 407011f147ecda01	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-f7-35-08-8c-18\WpadDecision = "0"	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B514C971-6C1B-41C5-B2F4-8FF54FCC8368}	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B514C971-6C1B-41C5-B2F4-8FF54FCC8368}\WpadDecision = "0"	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B514C971-6C1B-41C5-B2F4-8FF54FCC8368}\12-f7-35-08-8c-18	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-f7-35-08-8c-18\WpadDecisionReason = "1"	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-f7-35-08-8c-18	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0021000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B514C971-6C1B-41C5-B2F4-8FF54FCC8368}\WpadDecisionReason = "1"	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B514C971-6C1B-41C5-B2F4-8FF54FCC8368}\WpadNetworkName = "Network 3"	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\12-f7-35-08-8c-18\WpadDecisionTime = 407011f147ecda01	2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2652
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2516

C:\Users\Admin\AppData\Local\Temp\2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-08-11_2a73e5b0b90e164be00f5cfdd0bb0cac_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2968

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
1a113533ee6456030b227b5057da0024

SHA1
6b53275691cb0be2c5db03397a67f73996401fb5

SHA256
76c5e3924d6817917ff1903ddcd84c1d46d2eaa986299f6c4d12325832e9146f

SHA512
1391ab4b521d28443495801051c419fc68e3cebc9dc18dff98d40fba1a9d42d22bcd84c86ba80d373b6c68ce8077041897c6f94e03a8ac8cdc7ab95fd40f5ec4

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Analysis

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