wannacry | dfc275107808b93c2bb221f6c440685d50f0453c9b851bbbe184c349d65c5b99

Resubmissions

25-07-2024 17:22

240725-vxtmnatejk 10

25-07-2024 12:33

240725-prbxrssajg 10

Analysis

max time kernel
176s
max time network
213s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
25-07-2024 17:22

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General

Target

2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe
Size

2.2MB
MD5

f448d756bcb064687637869c0f19232a
SHA1

d0754dbcadf6f25788538a9ae65f36f6c5d2f431
SHA256

dfc275107808b93c2bb221f6c440685d50f0453c9b851bbbe184c349d65c5b99
SHA512

f1791bb1926868850426c4c113300d6aec7b393862399865afa612e1598990730e5492e28a63238c0b96ca4d87d5bf61d9c9ae397ff728ae3c607cf7406b376a
SSDEEP

49152:QnUMSEej/1INRx+TSqTdX1HkQo6SAARdhnvn:QUzz1aRxcSUDk36SAEdhvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3527) 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

Processes:

tasksche.exe

pid process

1360 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

Processes:

2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe

description ioc process

File created C:\WINDOWS\tasksche.exe 2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4712 1360 WerFault.exe tasksche.exe

pid	process
1360	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe

pid	pid_target	process	target process
4712	1360	WerFault.exe	tasksche.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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

Processes:

2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe

description	pid	process	target process
PID 3408 wrote to memory of 1360	3408	2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe	tasksche.exe
PID 3408 wrote to memory of 1360	3408	2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe	tasksche.exe

C:\Users\Admin\AppData\Local\Temp\2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3408

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
2⤵
- Executes dropped EXE
PID:1360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 8
3⤵
- Program crash
PID:4712

C:\Users\Admin\AppData\Local\Temp\2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-07-25_f448d756bcb064687637869c0f19232a_wannacry.exe -m security
1⤵
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1360 -ip 1360
1⤵
PID:1020

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

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
751b7f1a7f7f0fce839ca8bf3d440d86

SHA1
92bd8c88e7497eae1c837aae38cd3d44e23070bf

SHA256
dfb7604aeec464c3ee21b0dd04078d23f6d8a17578cba722e57175a1745ebf2f

SHA512
8a50753f8ee84956e732c3dbb776d9a5e9aeca2e79b333a6df64605dc7fbe0661a4d323ed0bd30954924130d7563646c5468d7ddf69b951de0ba6c46a87cc4b4

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