wannacry | 933d22e4dd68fe7cfa1d8a7afdd2f0a3aec97fbd0d09069a8667dc4f45c0c7eb

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
18/05/2024, 02:55

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General

Target
52bd09bef51fdc8f27db1d866833f06e_JaffaCakes118.dll
Size 5.0MB
Sample240518-def56sha2w
SHA256 933d22e4dd68fe7cfa1d8a7afdd2f0a3aec97fbd0d09069a8667dc4f45c0c7eb
MD5 52bd09bef51fdc8f27db1d866833f06e
SHA1 2effa46e80d3a66a53a1a43f415c4383a2ead9c6
SHA512 40fef4905591ccdd3db265671eb32d7eac3a2de03d0363b67cdd194db600965f091a46e7d8cd8c1519853aa58ca542761c4549e3cde257d77b9273bb6285f3b8
SSDEEP 98304:TDqPoBhC1aRxcSUDk36SAEdhvxWa9P593R8:TDqPT1Cxcxk3ZAEUadzR8
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 (3213) 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
3968	mssecsvc.exe
4200	mssecsvc.exe
3808	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 3176 wrote to memory of 4436	3176	rundll32.exe	83
PID 3176 wrote to memory of 4436	3176	rundll32.exe	83
PID 3176 wrote to memory of 4436	3176	rundll32.exe	83
PID 4436 wrote to memory of 3968	4436	rundll32.exe	84
PID 4436 wrote to memory of 3968	4436	rundll32.exe	84
PID 4436 wrote to memory of 3968	4436	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\52bd09bef51fdc8f27db1d866833f06e_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3176
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\52bd09bef51fdc8f27db1d866833f06e_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4436
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3968
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3808

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4200

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 933bd7af869d16469fac1f38a7ce1f89907d0a0af6eb92d18d89939a6858dd34
MD5 e24f99d2f3d5748da8746baa26293855
SHA1 9dc544c10d8539e6673718d9f28e7675334ec347
SHA512 0158fe45aad4fb521fd0c0fd3c03bacdd2c5ea66e9f4b5add529ced6e452c91e3b71296472a671ddd4ee7e4743b6499bb23eb1eb87b6a15008074f807f135fa1
SSDEEP 98304:XDqPoBhC1aRxcSUDk36SAEdhvxWa9P593R8:XDqPT1Cxcxk3ZAEUadzR8
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 aba53ea94812a018ac00e9664c57d32bbf25922bb08141694fb65f493611248b
MD5 f35530613a65e4b78fd49fdc9ae2a761
SHA1 c5171833f01470d7f01bda118eec6fd457545c0d
SHA512 6d93a906f3de70ebef2b793954c2660f6c51f25a20f7b1c8da964240605e36e9861c822c9b6ee3a2f8e2e030991898b7d9ff8ee220b2f31ad3b8dba4be3e1d44
SSDEEP 98304:QqPoBhC1aRxcSUDk36SAEdhvxWa9P593R8:QqPT1Cxcxk3ZAEUadzR8
MD5 SHA1 SHA512 SSDEEP