wannacry | e3a29b6848a90b4e08328d7d3596df9ab575e4913a38756c00e241e6f6b9c3b1

General

Target
2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Size 5.0MB
Sample240706-p7a1eaydnn
SHA256 e3a29b6848a90b4e08328d7d3596df9ab575e4913a38756c00e241e6f6b9c3b1
MD5 78bc25ae8b46e549aa69580498aecf2d
SHA1 6631bf741626e90627e0797a3a6e12af16c90c1d
SHA512 3c8318ead51812c1674cf63b30c6f9f79c2a12fd66ec19a8e9c3da8a24d7bab291dfcce81e1686852717b9b56a5874a6324182f335f0cd8aa49dddff3a391b44
SSDEEP 49152:2nsEnbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:yswoBhz1aRxcSUDk36SAEdhv
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3337) 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
2912	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	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240629546	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5112 wrote to memory of 2912	5112	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe	86
PID 5112 wrote to memory of 2912	5112	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe	86
PID 5112 wrote to memory of 2912	5112	2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:5112
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  PID:2912

C:\Users\Admin\AppData\Local\Temp\2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-07-06_78bc25ae8b46e549aa69580498aecf2d_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1812

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tasksche.exe

Path C:\Windows\tasksche.exe
Size 2.0MB
SHA256 dc39d604163d09d16cf9cb104ed4df0ada147bcd64c0be75511cb1a302dda5dc
MD5 5140acd290a4be9172887a51f3306701
SHA1 c1492bc88bb1eb8fe50a2f68b0ee44ac70ffc7c4
SHA512 96935d5e4a37c52787b8688df937c3b02135a0013a6b06c897f5226be8aec749d3d3d58066aa5fe27cbb78efa327678bb8460a1b75e2e452d1d71fbc5a622b8c
SSDEEP 49152:XEnbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvm:XwoBhz1aRxcSUDk36SAEdhvm
MD5 SHA1 SHA512 SSDEEP

Submit Download

Analysis

Sharing