wannacry | b9f8f0e1e61f5e5f0eff23c214388e08c8f0df8652f3e6a4da25b8db5548b2d7

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
20/07/2022, 07:11

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General

Target
5d8002509d27078aa26f8a8e89157a78.dll
Size 5.0MB
Sample220720-hzzv8sdaa7
SHA256 b9f8f0e1e61f5e5f0eff23c214388e08c8f0df8652f3e6a4da25b8db5548b2d7
MD5 5d8002509d27078aa26f8a8e89157a78
SHA1 adbfd78242f60ddcf56e2587120eb95533ed9b46
SHA512 21eb533e3357f7dfa87653ac474790177d7750602e76bc90cf374672601f7d6192622cedae3c56ba7c9fb206016fecf2ce37a8d48944f4884b3c6911fd02fe85
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 (3198) 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
4128	mssecsvc.exe
2696	mssecsvc.exe
3448	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 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.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 6 IoCs

description	pid	Process	procid_target
PID 3432 wrote to memory of 3304	3432	rundll32.exe	75
PID 3432 wrote to memory of 3304	3432	rundll32.exe	75
PID 3432 wrote to memory of 3304	3432	rundll32.exe	75
PID 3304 wrote to memory of 4128	3304	rundll32.exe	76
PID 3304 wrote to memory of 4128	3304	rundll32.exe	76
PID 3304 wrote to memory of 4128	3304	rundll32.exe	76

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5d8002509d27078aa26f8a8e89157a78.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3432
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\5d8002509d27078aa26f8a8e89157a78.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3304
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4128
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3448

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2696

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

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 dac2d24af0cb970a65565fe37e1b0864690bea020ec186007c8d3ed0b4b82cdf
MD5 7e0872e8d44387651df2e2c374e061d7
SHA1 f83d7bd31e4b891845ccbdce0ce3dabd5dc3b78c
SHA512 2e027984a00715fdd97ef6ce4517a6f3f55a0155ce6d8c2cd0de05177d79e193ea389c86aa579ac599080be157c90d36c9f010c354e26b600b8a2bbe018b0533
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:yDqPoBhz1aRxcSUDk36SA
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 dac2d24af0cb970a65565fe37e1b0864690bea020ec186007c8d3ed0b4b82cdf
MD5 7e0872e8d44387651df2e2c374e061d7
SHA1 f83d7bd31e4b891845ccbdce0ce3dabd5dc3b78c
SHA512 2e027984a00715fdd97ef6ce4517a6f3f55a0155ce6d8c2cd0de05177d79e193ea389c86aa579ac599080be157c90d36c9f010c354e26b600b8a2bbe018b0533
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:yDqPoBhz1aRxcSUDk36SA
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 dac2d24af0cb970a65565fe37e1b0864690bea020ec186007c8d3ed0b4b82cdf
MD5 7e0872e8d44387651df2e2c374e061d7
SHA1 f83d7bd31e4b891845ccbdce0ce3dabd5dc3b78c
SHA512 2e027984a00715fdd97ef6ce4517a6f3f55a0155ce6d8c2cd0de05177d79e193ea389c86aa579ac599080be157c90d36c9f010c354e26b600b8a2bbe018b0533
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:yDqPoBhz1aRxcSUDk36SA
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 3eac88e6e9f0fc9b3ec441b99937dd26ce7bfcb964c879dcaa33b78630eab780
MD5 ffbd7c711745643ebb631938d978f358
SHA1 8154e3aa39f42a8b8fb6fded42efad29b6570a51
SHA512 76e9ca6963a086c595592829ed2254c2bb94fc128fe22055a0265d9a3306d1b8e83c80ddc8bbf70895e34fa686d80ba75a9b0394c56580a72418747ae1ec0d36
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA5:QqPoBhz1aRxcSUDk36SAu
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