wannacry | d388424c0a34f9d700cbafb96839f09a945d12d34b457cd64b4e82738fcf8801

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-01-2025 20:00

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General

Target

7d4c4401e1fe00bc5f751ddfabcf0e8d.dll
Size

5.0MB
MD5

7d4c4401e1fe00bc5f751ddfabcf0e8d
SHA1

f605c351811668526456a1832bad7973605e2af1
SHA256

d388424c0a34f9d700cbafb96839f09a945d12d34b457cd64b4e82738fcf8801
SHA512

f4a7b9497ff6e83238a7e7e5eb0555bbe729718a78cc8a6d01459575fbee6d402f97e78a5d0ad6fec98c15f458a1499ff97082e8aafd8385f0e2f2da6b5e9095
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhHE:+DqPoBhz1aRxcSUDk36SAEdhk

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3326) 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
4272	mssecsvc.exe
3968	mssecsvc.exe
4104	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
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 4988 wrote to memory of 4860	4988	rundll32.exe	82
PID 4988 wrote to memory of 4860	4988	rundll32.exe	82
PID 4988 wrote to memory of 4860	4988	rundll32.exe	82
PID 4860 wrote to memory of 4272	4860	rundll32.exe	83
PID 4860 wrote to memory of 4272	4860	rundll32.exe	83
PID 4860 wrote to memory of 4272	4860	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7d4c4401e1fe00bc5f751ddfabcf0e8d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4988
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7d4c4401e1fe00bc5f751ddfabcf0e8d.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4860
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4272
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4104

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:3968

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
47fe23c22356c88404a7b0b9a508effb

SHA1
b210745a7391b7d1b9169e1594239bbecdc76ba2

SHA256
1f1fc0cf6f281dc3ec78c86fb3e42986f5a769af28e2c27512bb557680f507ff

SHA512
739010e012801e67355f54dc2e80edcbf9a2722d40203d9e2b72a1df8f2e05306056edec8471f9a655f9e768a55c44fa5618a9591cca74bf9599b46cf97f81cf

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
087be2d4c652dd35156789e4044a5815

SHA1
bb9e590891e467a28a511e491e082f88c9bca1ef

SHA256
f38ac7e13323086989e78780c6785c664de6392db19779e96ef30bdb769d4ac6

SHA512
9d1a431cfe3367c4691b13ce8680f527bb071ff773c5da96a93f09a177d5dfc5e7d5df7100afd45e1a2174b3c99262ba01e80a4d3a98a8beb1025bf67e0a27bb

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