wannacry | 512a9e7fb06d8289859b47c6e4b47e8dcce207e7c88069e4f20fb316efd3ec69

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28-09-2024 08:09

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General

Target

fbdd06d58f1bfb4b2f9949e92e2f171c_JaffaCakes118.dll
Size

5.0MB
MD5

fbdd06d58f1bfb4b2f9949e92e2f171c
SHA1

afab7bce6cd2ec2ff55b7da57cae5a6c6386acdd
SHA256

512a9e7fb06d8289859b47c6e4b47e8dcce207e7c88069e4f20fb316efd3ec69
SHA512

5fb0409839c90fc3a25ffa4ed590a1e165b546b37e82029ad0c6512e31a1755fe979a1b0192c4d9823121f96dd770c6d52c77cb320bc44393854ebf26bfb3d0c
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2:+DqPe1Cxcxk3ZAEUadzR8yc4

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3347) 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
4172	mssecsvc.exe
2368	mssecsvc.exe
2116	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

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
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
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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1696 wrote to memory of 216	1696	rundll32.exe	82
PID 1696 wrote to memory of 216	1696	rundll32.exe	82
PID 1696 wrote to memory of 216	1696	rundll32.exe	82
PID 216 wrote to memory of 4172	216	rundll32.exe	83
PID 216 wrote to memory of 4172	216	rundll32.exe	83
PID 216 wrote to memory of 4172	216	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fbdd06d58f1bfb4b2f9949e92e2f171c_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1696
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fbdd06d58f1bfb4b2f9949e92e2f171c_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:216
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4172
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2116

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
5fbaf4daa1037b875630506730cb99ee

SHA1
cd1f493fc1e62a16675e63188504efaa01a6e78c

SHA256
79dc8ad2e8990190a541901d18b02e3f41197262951c5b725f890c5c8d347895

SHA512
2083307f789812f85d36b9a38356e3bd3eb5dacb494165d7c7ff53f6f3658dc5505d4a29892db04d7a8477bd2fb779085ae9ea67c5d24052929a672fd72b4170

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
51108918049744524b09e6d3ac74a41a

SHA1
bedee035d59584cfc541f27b19b49117742df922

SHA256
a7eb5417b09874d888643f3b46fc74723b211312a9149192cf120127c8ad5d7d

SHA512
d4d1138fd947efb61ee3c564a48ff41f6198322ff8064c75101a0fc89c669e9751c4ec68fed1ec7ab608583018d461ba771c4dda20539b6eb02e1c54bf9a8da4

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