wannacry | a1f732fa45e4a5b3c27dab1b8c39ac95b9c64794e18db0c3bbdeb208d9bca53a

General

Target

20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Size

3.6MB
MD5

b9b8074ca24b54eb9ad88c0a939c0ecc
SHA1

aec350e044dd7ff287686e2a345038aa0d727fa2
SHA256

a1f732fa45e4a5b3c27dab1b8c39ac95b9c64794e18db0c3bbdeb208d9bca53a
SHA512

46119ddb0d03a190bc75b725b1cd16bf8e64392d63f627dac912a5208e83a7ebbf841e3c5c34e2f80e5af7af91a515fc8cf90264d18a4e4c494e7e8739c066e2
SSDEEP

98304:yDqPoBhz1aRxcSUDk36SAEdhexWa9P593R8yAVp2HI:yDqPe1Cxcxk3ZAEdadzR8yc4HI

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3270) 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
2168	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	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.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	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.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	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9205829A-97FD-488E-91DA-E1EE3B122FA0}	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9205829A-97FD-488E-91DA-E1EE3B122FA0}\WpadDecisionReason = "1"	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9205829A-97FD-488E-91DA-E1EE3B122FA0}\WpadDecision = "0"	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9205829A-97FD-488E-91DA-E1EE3B122FA0}\ee-cd-01-69-32-c0	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-cd-01-69-32-c0\WpadDecisionReason = "1"	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-cd-01-69-32-c0\WpadDecision = "0"	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9205829A-97FD-488E-91DA-E1EE3B122FA0}\WpadDecisionTime = 00b196543e11db01	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9205829A-97FD-488E-91DA-E1EE3B122FA0}\WpadNetworkName = "Network 3"	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-cd-01-69-32-c0\WpadDecisionTime = 00b196543e11db01	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0161000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-cd-01-69-32-c0	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe

C:\Users\Admin\AppData\Local\Temp\20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2960
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2168

C:\Users\Admin\AppData\Local\Temp\20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe
C:\Users\Admin\AppData\Local\Temp\20240927b9b8074ca24b54eb9ad88c0a939c0eccwannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2144

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
346be541c6610dfccd49dd497dc860f9

SHA1
5871801daf2aab9ed2f4edd90558d6e63fea9c99

SHA256
5b87ff79fb78b345b3ab2854ac5afd83b02a98c5ec087ad64c56510c368d7535

SHA512
1274bfbed7fd5a7cde239e06ef5b5b95ee17ba5f2a64b9d37a3025c1805f71247f9c13739ff60846da9edd2aca429c8f01f2e8225ca32da61e8d8e4369d08c04

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