wannacry | 4bebb73aa972683e3c5cef607ecc7f9594412af89e9826e1c2bee29e4131a15f

General

Target

2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Size

3.6MB
MD5

af9ca0c28097f501f3c3028f451637c0
SHA1

34170a51915630e494f52c28a0093f910a6779c2
SHA256

4bebb73aa972683e3c5cef607ecc7f9594412af89e9826e1c2bee29e4131a15f
SHA512

79dac3f2332757ebfb04225122ae25e8a8d25f52afa5ebcaae59946e773ecbc888a4274072071d5b4781ded1aded6ee19b9dbfdee1a4b875807e34e9f5b4ad6f
SSDEEP

98304:yDqPoBhz1aRxcSUDk36SAPxWa9P593CJf:yDqPe1Cxcxk3ZA4adzC1

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3193) 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
1160	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	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-10-12_af9ca0c28097f501f3c3028f451637c0_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	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-12_af9ca0c28097f501f3c3028f451637c0_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\Content\CachePrefix	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-19-4e-b4-0b-99\WpadDecision = "0"	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}\WpadDecisionReason = "1"	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00bc000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}\WpadDecisionTime = a0b19a7a631cdb01	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}\WpadDecision = "0"	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-19-4e-b4-0b-99	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-19-4e-b4-0b-99\WpadDecisionTime = a0b19a7a631cdb01	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}\WpadNetworkName = "Network 3"	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}\a6-19-4e-b4-0b-99	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-19-4e-b4-0b-99\WpadDecisionReason = "1"	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2404
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:1160

C:\Users\Admin\AppData\Local\Temp\2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-12_af9ca0c28097f501f3c3028f451637c0_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2256

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
e68b88738decb5d8f68a784ac7c44b55

SHA1
4689743c8f372118bd2499f58832f131961f6aeb

SHA256
3aa52ec513168503d533d9ea553082f8776883dfa17c34931a26006ad3f4901d

SHA512
272a89663941494a25d920dace18e36e7686f71365e6c058ee135c71aedf21ec90946921160f9bc68c939ec4951e6976044fd250e748f4defc10bd80eb02c4fb

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