wannacry | 012b4742fe2f04d4fc828a3ed307e03d512f743063ca5dd0ab2aec93beed93e4

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-09-2024 14:33

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General

Target

2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe
Size

3.6MB
MD5

782d9f15fc707dc0b15de3a9857dbda0
SHA1

bdcdb8b66f769abb78ca323a9b14a71a7cc6d583
SHA256

012b4742fe2f04d4fc828a3ed307e03d512f743063ca5dd0ab2aec93beed93e4
SHA512

042dffd982dd3d1d69f10c44881c658d5e3c2486b69e39d4845b6d84b0760eb11f674295233a0e224bb4fdab2f73afcbe85a1eeedeec42f40424b550774949f5
SSDEEP

49152:VnjrE/bcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:Z34oBhz1aRxcSUDk36SAEdhv

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3231) 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
2692	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 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2676	2692	WerFault.exe	32

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_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2692	2636	2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe	32
PID 2636 wrote to memory of 2692	2636	2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe	32
PID 2636 wrote to memory of 2692	2636	2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe	32
PID 2636 wrote to memory of 2692	2636	2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe	32
PID 2692 wrote to memory of 2676	2692	tasksche.exe	33
PID 2692 wrote to memory of 2676	2692	tasksche.exe	33
PID 2692 wrote to memory of 2676	2692	tasksche.exe	33
PID 2692 wrote to memory of 2676	2692	tasksche.exe	33

C:\Users\Admin\AppData\Local\Temp\2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2636
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2692
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2692 -s 36
    3⤵
    - Program crash
    PID:2676

C:\Users\Admin\AppData\Local\Temp\2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-27_782d9f15fc707dc0b15de3a9857dbda0_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2780

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

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
764b90f76074ad06b589c69f6e65fc36

SHA1
d42c9d1510a007f4289f98e86309e076fc2499db

SHA256
3b2edfff7b8ad08c31f303e22cc87ee3c5baedc029cabbb78f71bbebee52998e

SHA512
4a553168a362f7a99111b3dca705698e4279e734378a24716ad5a00625996b4565c563c01d5b258d9c467f8a15289e8659451ba2c78dded6d58afcdafedaccaa

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