wannacry | dcbe3bdf580d7acc7252e9fe43d4ee78ad48a8be9ef737b56e43127b808b0fb1

General

Target

2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Size

5.0MB
MD5

3c53b840fbf1deb8feb0a79b54dd11a9
SHA1

ae5cfa224986e5c311e3bc3373ca31ad092345ea
SHA256

dcbe3bdf580d7acc7252e9fe43d4ee78ad48a8be9ef737b56e43127b808b0fb1
SHA512

36ea4b8d8119c87aaf8e14d29a8404c6f049a445377baa9f96d31ae1ce9f6ca525efda85ab223a595439f746768c15fee2f52984e2c0e991b014f076f47915d2
SSDEEP

24576:2bLgddQhfdmMSirYbcMNgef0QeQjGjv+PYvT1E6xHjBtkch6bmy3ZH7GlXHQePfh:2nAQqMSPbcBVQejjT7zJU66bI3C06

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3157) 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
1072	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	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_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	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6D9B3702-0093-465D-913D-830EBBC758EF}\WpadDecisionReason = "1"	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6D9B3702-0093-465D-913D-830EBBC758EF}\WpadDecision = "0"	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6D9B3702-0093-465D-913D-830EBBC758EF}\a2-fd-a1-fd-6e-bd	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6D9B3702-0093-465D-913D-830EBBC758EF}	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6D9B3702-0093-465D-913D-830EBBC758EF}\WpadDecisionTime = a03f6f8abfe4da01	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-fd-a1-fd-6e-bd	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-fd-a1-fd-6e-bd\WpadDecisionTime = a03f6f8abfe4da01	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0199000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-fd-a1-fd-6e-bd\WpadDecision = "0"	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6D9B3702-0093-465D-913D-830EBBC758EF}\WpadNetworkName = "Network 3"	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-fd-a1-fd-6e-bd\WpadDecisionReason = "1"	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2296
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:1072

C:\Users\Admin\AppData\Local\Temp\2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-08-02_3c53b840fbf1deb8feb0a79b54dd11a9_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1724

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
865b8e786da9f125ff66f5d2341fc2e4

SHA1
a7cd247667a82562f360449f596a43b89f6bcf8b

SHA256
a1a2ad6d8214691978f493a6c09e9a4dbe152d1ac451c6bfc19936b64b1128e0

SHA512
e462179a8704e63dca835b447c74b650cae07d7dffa7a0b0d7095611744bf23dc0cc034924110cd202c640179307d7935308957ee2ee939e37220d52ba8f162b

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Analysis

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