wannacry | dfc45e2b38be92959ef8198fb1463d89bbceb9d61c01792623af1bd7a22b6111

Analysis

max time kernel
61s
max time network
67s
platform
windows10-1703_x64
resource
win10-20240611-es
resource tags

arch:x64arch:x86image:win10-20240611-eslocale:es-esos:windows10-1703-x64systemwindows
submitted
04-10-2024 11:44

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General

Target

wannacry.exe
Size

276KB
MD5

14131d9a5de9dd62ccc53a05d60b1a15
SHA1

c3309c4598bfe98d6e52cc93b19d2876eaccc538
SHA256

f60d07422a50e62bf3b92ab406b83b26fcd203a1e77ae2a9a6c239766f65eb8f
SHA512

ea5e1a8d3cff14bd5fbdacfa724a5e7142866b7595621adc254fb5ce1bf7e86c1b23e13b44e902299729e3dccccc4b02aabee5f05490fccfc006c39ee19da3be
SSDEEP

6144:HE9l9yeqIYVTH5DgSg8ajldktM0XXrEhypyhqHBuDp0Nc8Qs:HVbLgPluEhq0Dp

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (829) 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
4004	tasksche.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\counters2.dat	wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wannacry.exe

Modifies data under HKEY_USERS 8 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	wannacry.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4004	tasksche.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4016 wrote to memory of 4004	4016	wannacry.exe	72
PID 4016 wrote to memory of 4004	4016	wannacry.exe	72
PID 4016 wrote to memory of 4004	4016	wannacry.exe	72

C:\Users\Admin\AppData\Local\Temp\wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4016
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  PID:4004

C:\Users\Admin\AppData\Local\Temp\wannacry.exe
C:\Users\Admin\AppData\Local\Temp\wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4820

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\tasksche.exe

Filesize
72KB

MD5
f40217f39f426447598ae6f25e63a1fc

SHA1
b4191bbffba1ffdcc65d4baf7f90ab4650e8d823

SHA256
93b36942c6e1f89a7b3a040f5f79bba6d0ff44b0c2e3d1baed84e41faa503d8c

SHA512
6b5c2bf689b9c89c8ed92bfa1743081fdcdafaa28394964218ac3340984cc3247e67d56a9eb2a60df007a013a129d6c2f87328860ac983dee191d6adfbbdddf1

Download Submit
memory/4004-4-0x0000000000640000-0x0000000000641000-memory.dmp

Filesize
4KB

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