wannacry | eedd33dfe6084c4fb8ff22594c5b4e6c35ff76170efa2caf12556a3ae427bf7f

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220715-en
resource tags

arch:x64arch:x86image:win10v2004-20220715-enlocale:en-usos:windows10-2004-x64system
submitted
20/07/2022, 02:38

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General

Target
07813c26f199fef5b9963f31c3ab3077.dll
Size 5.0MB
Sample220720-c4q61abfdp
SHA256 eedd33dfe6084c4fb8ff22594c5b4e6c35ff76170efa2caf12556a3ae427bf7f
MD5 07813c26f199fef5b9963f31c3ab3077
SHA1 6319cd8890da043cf36832e4d895033b4e502ec9
SHA512 61793cbf78eecd5c7e05446f86d0a8e4b4170e28652f4d19894741c52d943eb675a274357eb20d08bdcfdaaeb06b070891bcb017efe3ec63ccdf2578bf80a239
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 (3153) 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 2 IoCs

pid	Process
3428	mssecsvr.exe
4428	mssecsvr.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\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 5 IoCs

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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4564 wrote to memory of 2228	4564	rundll32.exe	81
PID 4564 wrote to memory of 2228	4564	rundll32.exe	81
PID 4564 wrote to memory of 2228	4564	rundll32.exe	81
PID 2228 wrote to memory of 3428	2228	rundll32.exe	82
PID 2228 wrote to memory of 3428	2228	rundll32.exe	82
PID 2228 wrote to memory of 3428	2228	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\07813c26f199fef5b9963f31c3ab3077.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4564
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\07813c26f199fef5b9963f31c3ab3077.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2228
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3428

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4428

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

mssecsvr.exe

Path C:\WINDOWS\mssecsvr.exe
Size 3.6MB
SHA256 b668a57b5eda98b43fed817821414f1d0b63bb8cdd481808d49e48b956bd75b6
MD5 289caf2bf72f4dceb04c65bf03d7bab1
SHA1 4daa3f803e95a784b47bac4d96f56b879812a85a
SHA512 6029ad714e89d81dd797905b5d33962d023f935ae8d845e38d7e2071074c0f747db5870189a9e14c196062d9b3e3edf1edc7458ffc90ebf1717571f84e6b4c20
SSDEEP 98304:qGPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2HI:qGPe1Cxcxk3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 3.6MB
SHA256 b668a57b5eda98b43fed817821414f1d0b63bb8cdd481808d49e48b956bd75b6
MD5 289caf2bf72f4dceb04c65bf03d7bab1
SHA1 4daa3f803e95a784b47bac4d96f56b879812a85a
SHA512 6029ad714e89d81dd797905b5d33962d023f935ae8d845e38d7e2071074c0f747db5870189a9e14c196062d9b3e3edf1edc7458ffc90ebf1717571f84e6b4c20
SSDEEP 98304:qGPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2HI:qGPe1Cxcxk3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 3.6MB
SHA256 b668a57b5eda98b43fed817821414f1d0b63bb8cdd481808d49e48b956bd75b6
MD5 289caf2bf72f4dceb04c65bf03d7bab1
SHA1 4daa3f803e95a784b47bac4d96f56b879812a85a
SHA512 6029ad714e89d81dd797905b5d33962d023f935ae8d845e38d7e2071074c0f747db5870189a9e14c196062d9b3e3edf1edc7458ffc90ebf1717571f84e6b4c20
SSDEEP 98304:qGPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2HI:qGPe1Cxcxk3ZAEUadzR8yc4HI
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