wannacry | ac7daca4072f210d5066b412d394faf2928ab0387f2deea884caaaf9b00db28b

General

Target

2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Size

2.2MB
MD5

671a4dffa8669d953cc82036333776f5
SHA1

d0e3742d724b141290e878751a81a8750e293605
SHA256

ac7daca4072f210d5066b412d394faf2928ab0387f2deea884caaaf9b00db28b
SHA512

efdbf51ab271124e0381d8533cae02c1f35361860e2e5332228a6e875b9d2974e7ce820db701e2390560f492479e064dfd1f5d07687c3179946b8c9c3f953270
SSDEEP

49152:QnpEKUacBVQej/1GNRx+TSqTdX1HkQo6SAARdhnvn:QpyfBhz1URxcSUDk36SAEdhvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3214) 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
4600	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 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240655562	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.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	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4572 wrote to memory of 4600	4572	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe	83
PID 4572 wrote to memory of 4600	4572	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe	83
PID 4572 wrote to memory of 4600	4572	2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4572
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:4600

C:\Users\Admin\AppData\Local\Temp\2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-27_671a4dffa8669d953cc82036333776f5_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3448

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
2.0MB

MD5
39afec8ac380560b752af4f1f1d8c821

SHA1
b37da4615b78efd112e43295d79517250d013967

SHA256
27d7e990084a6d456de7228d3b8d94f0a79824ca669dd578076999beb6a123c7

SHA512
f0fd075b689732f29f1715933075e6b69b8748efa923112cc6c41625dbc61c2b466e032f3183a392fcba406ae39849a237bc893c6ddd893a47ae478ef2548ef8

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Analysis

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