wannacry | 3c0607e8cd03809a00c7abaf0d6da1627f2ceac552a84aa2198c7993300ca8d7

General

Target

2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Size

5.0MB
MD5

aa65de92680a05ce79fa7e59dcbe4ebb
SHA1

799f1a0ece653b6ffd4b763db76932fff15572f4
SHA256

3c0607e8cd03809a00c7abaf0d6da1627f2ceac552a84aa2198c7993300ca8d7
SHA512

55465e062e81ddc39beda8a0e5a9daefa9775dedb45462af593f8633080010a796eaf2f4b07f6b84cb3ab31e40f95347c5520a183ef11fec6e963e6ce654d4ae
SSDEEP

49152:2nAQqMSPbcBVQejf6SAARdhnvxJM0H9PAMEcaEau3R8yAH1plAHw:yDqPoBhD6SAEdhvxWa9P593R8yAVp2Hw

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 (3247) 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
2924	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	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_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	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{81F13597-D11E-40B6-A1C1-32E3CEA4B05B}\WpadDecision = "0"	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{81F13597-D11E-40B6-A1C1-32E3CEA4B05B}\WpadNetworkName = "Network 3"	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e2-b1-66-a4-98\WpadDecisionTime = 40e4899a2884db01	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{81F13597-D11E-40B6-A1C1-32E3CEA4B05B}\WpadDecisionReason = "1"	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e2-b1-66-a4-98\WpadDecisionReason = "1"	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f017a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{81F13597-D11E-40B6-A1C1-32E3CEA4B05B}	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{81F13597-D11E-40B6-A1C1-32E3CEA4B05B}\WpadDecisionTime = 40e4899a2884db01	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e2-b1-66-a4-98	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{81F13597-D11E-40B6-A1C1-32E3CEA4B05B}\02-e2-b1-66-a4-98	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\02-e2-b1-66-a4-98\WpadDecision = "0"	2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:272
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2924

C:\Users\Admin\AppData\Local\Temp\2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-02-21_aa65de92680a05ce79fa7e59dcbe4ebb_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2888

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
ea37fb7de543ecb337eb3857d1faf210

SHA1
22741da869077bc8e898e985dcf5c6f4562d4023

SHA256
42a6d84ceaa424d193a9392a400f6c094011244284d44850a58ab5b918b11866

SHA512
30a3a80e67ddcc368be4437be737d21b3319198d97b22027e9c0c80b951502a0058c546e154a22dc972e526366c4e544f272e1cd0ccc8325d3bb6a5abb87ac57

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