wannacry | b097b507742dbb7a652895645786d9c84aa8e44e77b2f49c929904d68a40d4e1

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
01-02-2025 15:43

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General

Target

2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe
Size

5.0MB
MD5

2b677b7badb8e439806c0504890ef64e
SHA1

3fecf679ab6b3c0b7ae060c732e3e6c7397b548e
SHA256

b097b507742dbb7a652895645786d9c84aa8e44e77b2f49c929904d68a40d4e1
SHA512

07b787ebd381075f7787ac721b0afb4599161d375d3a8c614bbc68a03ef61471769544ad1c0c6b10d205ae254bd2657c8221f06cb43248a3d8a0187d997469b0
SSDEEP

6144:GE9l9yUqIYVTH5DgSg8ajldktM0XXrP2GSf06CKZrGMYWXr51VZqvNAOis4it:GvbLgPlu+GSfiKZqMjCNfn

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 (3327) 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
4028	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	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2652	4028	WerFault.exe	87
2004	4028	WerFault.exe	87

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	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.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"	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 4028	1792	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe	87
PID 1792 wrote to memory of 4028	1792	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe	87
PID 1792 wrote to memory of 4028	1792	2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe	87

C:\Users\Admin\AppData\Local\Temp\2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1792
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4028
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 220
    3⤵
    - Program crash
    PID:2652
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 244
    3⤵
    - Program crash
    PID:2004

C:\Users\Admin\AppData\Local\Temp\2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-02-01_2b677b7badb8e439806c0504890ef64e_wannacry.exe -m security
1⤵
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4028 -ip 4028
1⤵
PID:1168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4028 -ip 4028
1⤵
PID:2456

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
778940b9891cf13586682d43a63bc3dd

SHA1
71d7cc0feb23b602e848a1e0c2c2dec784e64745

SHA256
bc08583991cbb4ae7ee1a02b572d20ddf589e5137851a0db6b9902c2a465db78

SHA512
d7c0088c8743dc63f01c9d8939645575e7863d96962b41bca3e8c1f05d485cd124eef858e3b6d30255d4ffdac17258bf1c09d5657722dcf832bf5153d588c7cb

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