wannacry | eef05d989b43900560a8bee6a5dc777bbf3bbc2ce303000aa37143c5d5866ab4

Analysis

max time kernel
156s
max time network
158s
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, 07:48

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General

Target
2fef747b9af97b5d5f51f6c8b78fc7e5.dll
Size 5.0MB
Sample220720-jm4jbsdce4
SHA256 eef05d989b43900560a8bee6a5dc777bbf3bbc2ce303000aa37143c5d5866ab4
MD5 2fef747b9af97b5d5f51f6c8b78fc7e5
SHA1 2819b156e2642287f6e5b8f3edf44be868f42398
SHA512 dfaca04e2f9361388d69809f17511b845f7f265f28ef923bc817c02c324ba1ec4b787f293562f18c53bdf8b3429fcbb0861fe9751a0a8a8773579c424082914c
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 (3073) 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
4280	mssecsvc.exe
2696	mssecsvc.exe
3484	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 2228 wrote to memory of 3972	2228	rundll32.exe	77
PID 2228 wrote to memory of 3972	2228	rundll32.exe	77
PID 2228 wrote to memory of 3972	2228	rundll32.exe	77
PID 3972 wrote to memory of 4280	3972	rundll32.exe	78
PID 3972 wrote to memory of 4280	3972	rundll32.exe	78
PID 3972 wrote to memory of 4280	3972	rundll32.exe	78

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2fef747b9af97b5d5f51f6c8b78fc7e5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\2fef747b9af97b5d5f51f6c8b78fc7e5.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3972
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4280
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3484

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 a79301ea4e6776c0b655276aed6ba149c7cbf9a37c219c8dc22fb857e5df191b
MD5 847552f3a002185c4a835f9591a97581
SHA1 3571a6c8c5f9eb76a246f1bcb7a274fb4f1cec7a
SHA512 0136b37902aab5ddb58ae284b44d78c178351163631374cd5d69635eb4890ace8a437714d812f9d3e0e4b017f94e5cf2046dd00b356083ae5a5a36cfb1ce78d8
SSDEEP 98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp:yDqPe1Cxcxk3ZAEUadzR8yc
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 a79301ea4e6776c0b655276aed6ba149c7cbf9a37c219c8dc22fb857e5df191b
MD5 847552f3a002185c4a835f9591a97581
SHA1 3571a6c8c5f9eb76a246f1bcb7a274fb4f1cec7a
SHA512 0136b37902aab5ddb58ae284b44d78c178351163631374cd5d69635eb4890ace8a437714d812f9d3e0e4b017f94e5cf2046dd00b356083ae5a5a36cfb1ce78d8
SSDEEP 98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp:yDqPe1Cxcxk3ZAEUadzR8yc
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 a79301ea4e6776c0b655276aed6ba149c7cbf9a37c219c8dc22fb857e5df191b
MD5 847552f3a002185c4a835f9591a97581
SHA1 3571a6c8c5f9eb76a246f1bcb7a274fb4f1cec7a
SHA512 0136b37902aab5ddb58ae284b44d78c178351163631374cd5d69635eb4890ace8a437714d812f9d3e0e4b017f94e5cf2046dd00b356083ae5a5a36cfb1ce78d8
SSDEEP 98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp:yDqPe1Cxcxk3ZAEUadzR8yc
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 6d5c3b74f8bd7df577ee946df65e6d4baf85739c13daa7d3f71858cba94ef9a1
MD5 4ae2a7352491c1f756b738048a66e3e8
SHA1 12ab9b1ceeb165b3d3f5ede529d05f2c2a260436
SHA512 c9e5cb8eeccd0159aa6a23a50005ea028e4d4e9b3c20afa73411de49331074dd5870330cfedbc5c4dcd02611c49703838aca7e4884395dafe12a9d6c6c4cf750
SSDEEP 98304:QqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp:QqPe1Cxcxk3ZAEUadzR8yc
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