wannacry | 64587fd1141d08acdf994278e9d9ce99b042ec3645416153412bb74d1754fb4e

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
14/05/2024, 03:17

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General

Target
3db04d422cd2c677d09e3db7bf02dfd9_JaffaCakes118.dll
Size 5.0MB
Sample240514-ds52fshc48
SHA256 64587fd1141d08acdf994278e9d9ce99b042ec3645416153412bb74d1754fb4e
MD5 3db04d422cd2c677d09e3db7bf02dfd9
SHA1 f44915ca89557e04f3cdfa9615cbc732d44658fe
SHA512 5a81fa0cefb2ca21707af0997d1af80e7497b5f30d12f934061fdf7e286b71978b7b5a72f9fe1f8d6d3772012c71946326ea9d1d9fe73c418f276c3867dcad86
SSDEEP 49152:znAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H90:TDqPoBhz1aRxcSUDk36SAEdhvxWa9
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 (3296) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 3 IoCs

pid	Process
540	mssecsvc.exe
1576	mssecsvc.exe
4208	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 Discovery
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 3684 wrote to memory of 3264	3684	rundll32.exe	82
PID 3684 wrote to memory of 3264	3684	rundll32.exe	82
PID 3684 wrote to memory of 3264	3684	rundll32.exe	82
PID 3264 wrote to memory of 540	3264	rundll32.exe	83
PID 3264 wrote to memory of 540	3264	rundll32.exe	83
PID 3264 wrote to memory of 540	3264	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3db04d422cd2c677d09e3db7bf02dfd9_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3684
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3db04d422cd2c677d09e3db7bf02dfd9_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3264
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:540
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4208

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 504991e73720ec4cabe9295669827c00da5e49970f2c46d9e7db82038ac28a62
MD5 a0b815f39b7a26eb526112f5cc4a9d5f
SHA1 33262df82a1c207d7c4fbd9c01ad1c1cd5fcf4bc
SHA512 6c805452f2e2452b0bca7ec2bb34088208fea84dd26e99dbfb3fd4033e86d64a6a1440cbbbc05d41fbdafc1ab460c4f9f6e01fd6e119abf41a05c329a7c24d50
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H90l:XDqPoBhz1aRxcSUDk36SAEdhvxWa9a
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 1c615c27223aff188cc141c60cc795b3b6bd2fd5760fa97a0d811a9104fb53cf
MD5 f46cca1e32e1b2ad1d9102a56f56fa29
SHA1 5b410ebd48c2267575ca54372bffa2a859a1fe34
SHA512 275181a645fcb81b02ff53c58899512dcd63ac9002c3460cea02d63e46f24879541292b6f2b37cf15dedf5d26fd0f7287d2a6961a1a82e54e6a7042650cc2971
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H90/:QqPoBhz1aRxcSUDk36SAEdhvxWa9U
MD5 SHA1 SHA512 SSDEEP