wannacry | 0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590

Analysis

max time kernel
151s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
21/09/2022, 03:53

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll
Size 5.0MB
Sample220921-efmj1saebn
SHA256 0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590
MD5 008b9895ed29a02b2ad9c15d10fe250c
SHA1 6dba81733aa199fd64dcfbb17e43d1a575a02086
SHA512 3deeeaa92cb98ce7fcca23a30fe08834c10af7e13b7ab8cbdceaa23408798a9dbf94cd4e3eecc25123abd93fbad8759a3c772d30bcffb34b1cb48ac39f8e0aea
SSDEEP 24576:RbLgurgDdmMSirYbcMNgef0jjG/D8k0k+RdhA:RnsEMSPbcBVu/oRdh
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3031) 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
4696	mssecsvr.exe
920	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 12 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	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\AutoDetect = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 2232	2180	rundll32.exe	81
PID 2180 wrote to memory of 2232	2180	rundll32.exe	81
PID 2180 wrote to memory of 2232	2180	rundll32.exe	81
PID 2232 wrote to memory of 4696	2232	rundll32.exe	82
PID 2232 wrote to memory of 4696	2232	rundll32.exe	82
PID 2232 wrote to memory of 4696	2232	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2232
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4696

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:920

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

Replay Monitor

Loading Replay Monitor...

Downloads

mssecsvr.exe

Path C:\WINDOWS\mssecsvr.exe
Size 2.2MB
SHA256 23534cc1894091377e8ee9e7864bd1dd58e5ecefe0cd3f305a1e06de4fdb512c
MD5 476e46074243409cd11eb699a1e87238
SHA1 462087544ff91ef506079a684419b8d5748462fd
SHA512 c87985972ef8f399a4b19e7ce55833e4b0256b3af8a14b0f118be6fde1118de22728f4a2fe15eca816afc1fe244f473c87a49bdb33ee076a11dc9fa87e471194
SSDEEP 24576:QbLgurgDdmMSirYbcMNgef0jjG/D8k0k+RdhAo:QnsEMSPbcBVu/oRdht
MD5 SHA1 SHA512 SSDEEP

Submit Download

mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 23534cc1894091377e8ee9e7864bd1dd58e5ecefe0cd3f305a1e06de4fdb512c
MD5 476e46074243409cd11eb699a1e87238
SHA1 462087544ff91ef506079a684419b8d5748462fd
SHA512 c87985972ef8f399a4b19e7ce55833e4b0256b3af8a14b0f118be6fde1118de22728f4a2fe15eca816afc1fe244f473c87a49bdb33ee076a11dc9fa87e471194
SSDEEP 24576:QbLgurgDdmMSirYbcMNgef0jjG/D8k0k+RdhAo:QnsEMSPbcBVu/oRdht
MD5 SHA1 SHA512 SSDEEP

Submit Download

mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 23534cc1894091377e8ee9e7864bd1dd58e5ecefe0cd3f305a1e06de4fdb512c
MD5 476e46074243409cd11eb699a1e87238
SHA1 462087544ff91ef506079a684419b8d5748462fd
SHA512 c87985972ef8f399a4b19e7ce55833e4b0256b3af8a14b0f118be6fde1118de22728f4a2fe15eca816afc1fe244f473c87a49bdb33ee076a11dc9fa87e471194
SSDEEP 24576:QbLgurgDdmMSirYbcMNgef0jjG/D8k0k+RdhAo:QnsEMSPbcBVu/oRdht
MD5 SHA1 SHA512 SSDEEP

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads