wannacry | 018cb669bfab40b0c0b26bd774d0a6a5698b23941517a7515fe14a52af70c5c5

General

Target

2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Size

2.2MB
MD5

6846015f28067c1522c758737fe1a2eb
SHA1

ca39fe748c2b0cf0a05133b9a77f1cfff7ba9c38
SHA256

018cb669bfab40b0c0b26bd774d0a6a5698b23941517a7515fe14a52af70c5c5
SHA512

f2e6d9143c3bae34badf70d9a74d2b3c2977d979bff2a7d5dbd3a6933d33871dfc3ad0f502c0dc716ac082653848067b6f430816746b41ff4da77c99032be847
SSDEEP

49152:QnpEKUacBVQejJx+TSqTdX1HkQo6SAARdhnvn:QpyfBhNxcSUDk36SAEdhvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3272) 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
4908	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_6846015f28067c1522c758737fe1a2eb_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240625984	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	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 4908	2460	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe	83
PID 2460 wrote to memory of 4908	2460	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe	83
PID 2460 wrote to memory of 4908	2460	2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2460
- 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:4908

C:\Users\Admin\AppData\Local\Temp\2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-27_6846015f28067c1522c758737fe1a2eb_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2452

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
913797a827244e71159bf6971b0ce459

SHA1
f89906ed67bce72a21cfd2fae379b2b95ff6839e

SHA256
27f3499e12be445e85648f019d3a25dddfedced0dd4d7474b48916939a40ad57

SHA512
cdda7d301b20206f912dd3a901db58ccd3c8b9b76f2a3ddb0d9b1362ab4e93d428345fc99976b544de818480755838e283bbc91eb88c88d10df34dd3051cdc4f

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