wannacry | ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-12-2024 22:37

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General

Target

ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a.exe
Size

5.0MB
MD5

40ea7d5b7cc4519a2aafc100347e49ec
SHA1

c19c7f8f8d8d3ef731c8f449ed1ad3a188daa784
SHA256

ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a
SHA512

7e37cf3245624fb2eebc742084bd4495d8892ac4a1a61fd8cc6611848b7498cdb9b0d50c6d18c0c98784f8e79a2af7f716960297c3ef082b429a0ed1ef52edd5
SSDEEP

12288:GwbLgPluxQhMbaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7zw+K+DHeQYSUjEXFH:VbLgdeQhfdmMSirYbcMNgef0QeQjGI

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (2504) 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
2004	tasksche.exe

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	ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a.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	ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a.exe

C:\Users\Admin\AppData\Local\Temp\ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a.exe
"C:\Users\Admin\AppData\Local\Temp\ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:3024
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2004

C:\Users\Admin\AppData\Local\Temp\ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a.exe
C:\Users\Admin\AppData\Local\Temp\ef891c36fca8b5dbfe677772795facc1cfc2b420c9d72ed052c8f2b97f306f7a.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:936

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
3.4MB

MD5
ac2927f49de3ecec3106d5fffe5aa1f6

SHA1
29a1f91792fa472520fabc1b1078054c73699416

SHA256
2646190742f23a3bc2f47b430224f71ca73ba79a4df4f5dc12bdcb8fe66ab92e

SHA512
eaf8176340625ae87306dc8bab8530431c4f1474d2b949449f354af21ee75a7b7818ab66c2b3d0e6ab28318b085d413b6e82ba1e5809d1da6b6a922fed78d271

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