wannacry | a7c31713c074e729990995eb77e7aee3714764bb3ac4e943be121721c14bd456

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
31-01-2025 17:27

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General

Target

2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe
Size

5.0MB
MD5

5c94732f8c764bdab3fe763213846b99
SHA1

3e9c90c787a5105d93f0ddb89aa9902fb36980ae
SHA256

a7c31713c074e729990995eb77e7aee3714764bb3ac4e943be121721c14bd456
SHA512

36888ec7c815ce9936eaa8b610daeef57c4f144f99277398fa21bd6730291cd63d9032314087b5bd993eefea3838d97d350a4c0d3a4beeb35af1cbc29f489328
SSDEEP

3072:QV+LydVaND9y/m3aILEVTCW5DgSglPcTcMXaDfldx0dFJtkoeV0XXg63:GE9l9yeqIYVTH5DgSg8ajldktM0XXr3

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 (3253) 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 1 IoCs

pid	Process
2956	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 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1128	2956	WerFault.exe	86
1972	2956	WerFault.exe	86

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	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1844 wrote to memory of 2956	1844	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe	86
PID 1844 wrote to memory of 2956	1844	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe	86
PID 1844 wrote to memory of 2956	1844	2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe	86

C:\Users\Admin\AppData\Local\Temp\2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1844
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2956
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2956 -s 220
    3⤵
    - Program crash
    PID:1128
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2956 -s 264
    3⤵
    - Program crash
    PID:1972

C:\Users\Admin\AppData\Local\Temp\2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-31_5c94732f8c764bdab3fe763213846b99_wannacry.exe -m security
1⤵
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2956 -ip 2956
1⤵
PID:1988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2956 -ip 2956
1⤵
PID:1996

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\tasksche.exe

Filesize
3.4MB

MD5
f293a3c6225b3f16b0b44f7321704660

SHA1
2e1604636fcb310401acbeffe26e5ca6a4bfc7d6

SHA256
8b50e60948e4b4c502e740530efff052d7f3af80878ef499c0c88785e2225ffd

SHA512
77c4a026f6621807f9c94cb122c2d69bc711cca1b63fcb62ab01566898f10aea4ffbdcbcdbb0f225d241d00706328c1af83c0aa6fa5e008918d784844445d5fa

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