wannacry | b34c64c2c6daffc09d5809b20b35ea2e8018e2c81baa95e2048a9bfe7657a359

General

Target
8353f0d91bab88250ba72e1d778b3b3a.dll
Size 5.0MB
Sample220720-eztgnscdap
SHA256 b34c64c2c6daffc09d5809b20b35ea2e8018e2c81baa95e2048a9bfe7657a359
MD5 8353f0d91bab88250ba72e1d778b3b3a
SHA1 87e19be5aa461b939854079a9e78caf260b68aeb
SHA512 cda1cb5a8a26dc9f359f948b94ef1dcf53b31dc4e9448374aa0ac802be9180833b94d7683c2f6236fcb97a5503705d2f00c91d66888eec7df09f450d9c903aa7
MD5 SHA1 SHA512

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3268) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046

Executes dropped EXE 3 IoCs

pid	Process
3780	mssecsvc.exe
2156	mssecsvc.exe
3468	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 Scanning
T1046

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240559078	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 4336	4832	rundll32.exe	80
PID 4832 wrote to memory of 4336	4832	rundll32.exe	80
PID 4832 wrote to memory of 4336	4832	rundll32.exe	80
PID 4336 wrote to memory of 3780	4336	rundll32.exe	81
PID 4336 wrote to memory of 3780	4336	rundll32.exe	81
PID 4336 wrote to memory of 3780	4336	rundll32.exe	81
PID 3780 wrote to memory of 3468	3780	mssecsvc.exe	83
PID 3780 wrote to memory of 3468	3780	mssecsvc.exe	83
PID 3780 wrote to memory of 3468	3780	mssecsvc.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8353f0d91bab88250ba72e1d778b3b3a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8353f0d91bab88250ba72e1d778b3b3a.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4336
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of WriteProcessMemory
    PID:3780
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      Drops file in Windows directory
      PID:3468

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mssecsvc.exe

Path C:\WINDOWS\mssecsvc.exe
Size 3.6MB
SHA256 5a40ca365a0de0fb14b4157c211510500992e487081b90b240652826be4f5be4
MD5 289f433f0db77dc1ba3d62b5fa643022
SHA1 ae65ab4c84e2590c46f8f55c31e4866feb406c84
SHA512 6b1837dc47b805dd9a245203ec85d6fb39b735ac8b999bf9f77b13e171bb1bf2541cec1ff1b233c84fb9623a025a7d8ed842fe1c76275623115b6da665452a83
SSDEEP 49152:2nsEhPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvtEaue5c/bXZROAxf:ysOoBhz1aRxcSUDk36SAEdhv0Uc/Jf
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\WINDOWS\tasksche.exe
Size 2.0MB
SHA256 96d082f36ecb73a844ee58162f19fc649dd4fa0a891ac4f3073cc3f5bb9d7050
MD5 421f32ad10e03b8c41b785253f653cf5
SHA1 a69c5d7718a386817255ac73fd30a87dd54629a8
SHA512 2f46fe191f2dac2a4460fae09ea7473ea971a1c7f2cc26485047bb1fd70995d57a9b767c728c56d3a64b98cb2a1d46f172e67507632ba3833d8108b2473ee86a
SSDEEP 49152:XEhPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvm:XOoBhz1aRxcSUDk36SAEdhvm
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 5a40ca365a0de0fb14b4157c211510500992e487081b90b240652826be4f5be4
MD5 289f433f0db77dc1ba3d62b5fa643022
SHA1 ae65ab4c84e2590c46f8f55c31e4866feb406c84
SHA512 6b1837dc47b805dd9a245203ec85d6fb39b735ac8b999bf9f77b13e171bb1bf2541cec1ff1b233c84fb9623a025a7d8ed842fe1c76275623115b6da665452a83
SSDEEP 49152:2nsEhPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvtEaue5c/bXZROAxf:ysOoBhz1aRxcSUDk36SAEdhv0Uc/Jf
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 5a40ca365a0de0fb14b4157c211510500992e487081b90b240652826be4f5be4
MD5 289f433f0db77dc1ba3d62b5fa643022
SHA1 ae65ab4c84e2590c46f8f55c31e4866feb406c84
SHA512 6b1837dc47b805dd9a245203ec85d6fb39b735ac8b999bf9f77b13e171bb1bf2541cec1ff1b233c84fb9623a025a7d8ed842fe1c76275623115b6da665452a83
SSDEEP 49152:2nsEhPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvtEaue5c/bXZROAxf:ysOoBhz1aRxcSUDk36SAEdhv0Uc/Jf
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 2.0MB
SHA256 96d082f36ecb73a844ee58162f19fc649dd4fa0a891ac4f3073cc3f5bb9d7050
MD5 421f32ad10e03b8c41b785253f653cf5
SHA1 a69c5d7718a386817255ac73fd30a87dd54629a8
SHA512 2f46fe191f2dac2a4460fae09ea7473ea971a1c7f2cc26485047bb1fd70995d57a9b767c728c56d3a64b98cb2a1d46f172e67507632ba3833d8108b2473ee86a
SSDEEP 49152:XEhPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvm:XOoBhz1aRxcSUDk36SAEdhvm
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads