wannacry | d09e549ef00d6ecdef42b1c076a3c9d311af741a21845db5a0760935962fa006

General

Target

20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Size

3.6MB
MD5

a2acb21a7c5a824738585561ed53eaac
SHA1

29c30a76608ffae78fdd7b671323b34688cba76f
SHA256

d09e549ef00d6ecdef42b1c076a3c9d311af741a21845db5a0760935962fa006
SHA512

9ac0fd7f32bfc7172bb099eb5d8e9244fb25336d9cd2318a5ccfec851e5968bb1097f34c6af8cc3c46ac32dcd07ef51b7e492ee5d57d12dd1c78d4d7278d0cfe
SSDEEP

49152:2nAQqMSPbcBVQej/13n4bo3NCdRvWyXeXs:yDqPoBhz10o3oWyuc

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3091) 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
2676	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	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	20240919a2acb21a7c5a824738585561ed53eaacwannacry.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	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-41-32-b8-e1-7f	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-41-32-b8-e1-7f\WpadDecisionTime = 50d2b06ca60adb01	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}\WpadDecisionTime = 50d2b06ca60adb01	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00e8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}\WpadDecisionReason = "1"	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}\WpadNetworkName = "Network 3"	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}\76-41-32-b8-e1-7f	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-41-32-b8-e1-7f\WpadDecision = "0"	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AE813C31-9BB2-49C9-9D74-E676ADBD632A}\WpadDecision = "0"	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-41-32-b8-e1-7f\WpadDecisionReason = "1"	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe

C:\Users\Admin\AppData\Local\Temp\20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:1916
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2676

C:\Users\Admin\AppData\Local\Temp\20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe
C:\Users\Admin\AppData\Local\Temp\20240919a2acb21a7c5a824738585561ed53eaacwannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2652

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
919e99bc955ff6f8060c73bdf7522f7e

SHA1
78f1f043dfdc92282c78e6ce4fe0df58d215f130

SHA256
d22b697a018a3fec9daff3f5f7d59266c226749d6fab316d80688bebe10cb229

SHA512
87880e62875a772bbdd0f8a0776218c2e29f2fa8939841aa7464cee89009b8db0d621b42fe5785060a349d07678efa4d0046b72e78ffc1ddc8ab496b16471011

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