wannacry | b63dc254747411d06eba34643943a32b0fe5feaca4163601cd0e1e3adcbd7b02

General

Target

20240921b95243220aa617693473607bc19abb96wannacry.exe
Size

5.0MB
MD5

b95243220aa617693473607bc19abb96
SHA1

76b44dcd892631abf333f2af974e31050904c5d1
SHA256

b63dc254747411d06eba34643943a32b0fe5feaca4163601cd0e1e3adcbd7b02
SHA512

f502eb2e4a09cb553006acc011ed608a4bdeb3adacf588ffec1d09657404a430de20dff54751013b4e38422dfa0655a635adef4d38ea97a78c936f40b0c9773d
SSDEEP

98304:yDqPolz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:yDqPw1Cxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3316) 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
1924	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	20240921b95243220aa617693473607bc19abb96wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	20240921b95243220aa617693473607bc19abb96wannacry.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	20240921b95243220aa617693473607bc19abb96wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240921b95243220aa617693473607bc19abb96wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{70E5B1AB-7DFF-4EAE-AB29-C004FC8AA0F1}\WpadDecisionReason = "1"	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	20240921b95243220aa617693473607bc19abb96wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	20240921b95243220aa617693473607bc19abb96wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{70E5B1AB-7DFF-4EAE-AB29-C004FC8AA0F1}\WpadDecisionTime = 6087039c440cdb01	20240921b95243220aa617693473607bc19abb96wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	20240921b95243220aa617693473607bc19abb96wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-0a-50-5a-5e-3f\WpadDecisionReason = "1"	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-0a-50-5a-5e-3f\WpadDecision = "0"	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{70E5B1AB-7DFF-4EAE-AB29-C004FC8AA0F1}\WpadDecision = "0"	20240921b95243220aa617693473607bc19abb96wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{70E5B1AB-7DFF-4EAE-AB29-C004FC8AA0F1}\32-0a-50-5a-5e-3f	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-0a-50-5a-5e-3f\WpadDecisionTime = 6087039c440cdb01	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0065000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240921b95243220aa617693473607bc19abb96wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{70E5B1AB-7DFF-4EAE-AB29-C004FC8AA0F1}	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{70E5B1AB-7DFF-4EAE-AB29-C004FC8AA0F1}\WpadNetworkName = "Network 3"	20240921b95243220aa617693473607bc19abb96wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-0a-50-5a-5e-3f	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	20240921b95243220aa617693473607bc19abb96wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240921b95243220aa617693473607bc19abb96wannacry.exe

C:\Users\Admin\AppData\Local\Temp\20240921b95243220aa617693473607bc19abb96wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240921b95243220aa617693473607bc19abb96wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2524
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:1924

C:\Users\Admin\AppData\Local\Temp\20240921b95243220aa617693473607bc19abb96wannacry.exe
C:\Users\Admin\AppData\Local\Temp\20240921b95243220aa617693473607bc19abb96wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1400

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
78c4027e3434e7eb99f0283d50ba84c9

SHA1
433b861ecfba384a44e5cb8674800b5c50524e9c

SHA256
ecf72a26bbb96a8fe305a049ed53d913fc33b84a6ab52dda5478037994dcc75d

SHA512
8fa7c3d0f53d924ae22a7bc497f821acde54407095afdfa02b750020e2fb9677cbcedda116aab8b9eb89cfa99bb7ddd6a4f5b33eef6d34507ee73900c236c27b

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Analysis

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