wannacry | 4a25b0b979bebeee43eaf893255d4eb251c615a2c59c31d463304d1028bdc788

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
29-05-2024 07:41

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

7ff896ee88282ff5ff92801df4cbc9af_JaffaCakes118.dll
Size

5.0MB
MD5

7ff896ee88282ff5ff92801df4cbc9af
SHA1

e3615ebca56dd130206a1e3e599bf7ad3daa812d
SHA256

4a25b0b979bebeee43eaf893255d4eb251c615a2c59c31d463304d1028bdc788
SHA512

b15e05ea69740f244379d07c55c5a659780dbb93e9636b90846347dfbac5b45abf5bbd246fa0dbef5d05166e4bea15b95fa4c3810457b64b80d3a672d7cd8e82
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P593:TDqPe1Cxcxk3ZAEUadz

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3219) 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

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2188 mssecsvc.exe
3032 mssecsvc.exe
1296 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

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

pid	process
2188	mssecsvc.exe
3032	mssecsvc.exe
1296	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvc.exe

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

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1316 wrote to memory of 4644	1316	rundll32.exe	rundll32.exe
PID 1316 wrote to memory of 4644	1316	rundll32.exe	rundll32.exe
PID 1316 wrote to memory of 4644	1316	rundll32.exe	rundll32.exe
PID 4644 wrote to memory of 2188	4644	rundll32.exe	mssecsvc.exe
PID 4644 wrote to memory of 2188	4644	rundll32.exe	mssecsvc.exe
PID 4644 wrote to memory of 2188	4644	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7ff896ee88282ff5ff92801df4cbc9af_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1316

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7ff896ee88282ff5ff92801df4cbc9af_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4644

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2188

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1296

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
44e30ae945a1aa0a5c643d7b8cf2a3ae

SHA1
ea5d8b7d6b12ad9dbc28797866b82b26095f8964

SHA256
8a5e2eac0bae219a6a8ce01e28c948bfa57199f762f49e4913a1f385aea3bdf2

SHA512
eee46e6d10a868fd00b34d58f6476ebf3b7182f35fc01dd4223b3dcf51d6a0667425f2743cebac37c7f7381178ea339a05c1031fb55063d08f061d4700ab1f3f

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
fc0195c3fbc9d1ba19811d3c36b2bea4

SHA1
d618abf74712f8730fbad1d0988d1c30e1ec036b

SHA256
0c2837a2d107e6f9b508e63a48da7ef89e902907df6102a9de2fd2509316f739

SHA512
01423a0dd12ce2b337ef97087073945c9282cc0c51d8be12c43425e3357292b92f29ed43af52e7d6ff34adbb1cc10f8b34d2362995b3a9248bad71337b92d965

Download Submit