wannacry | e4de2bcdd89334ece46ef04becd538e177de2591abea682a7e7cb8edb967b026

Analysis

max time kernel
152s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09-05-2024 16:33

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General

Target

2adf3df26c4c3f88f288958bfaf9710d_JaffaCakes118.dll
Size

5.0MB
MD5

2adf3df26c4c3f88f288958bfaf9710d
SHA1

87ac0d58aec16889ba26ecd143f7cc25dde5b8b4
SHA256

e4de2bcdd89334ece46ef04becd538e177de2591abea682a7e7cb8edb967b026
SHA512

bf1c385fa0ca4602ea53ed8b17fb976b23001567ad818a3dc83dbaa7ac3652029e5f541fcc91784e87e7fa02cf73b66b8e5ae99010e057f8eface8514bf0724a
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R:TDqPe1Cxcxk3ZAEUadzR

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2708) 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

1284 mssecsvc.exe
228 mssecsvc.exe
4276 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
1284	mssecsvc.exe
228	mssecsvc.exe
4276	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1964 wrote to memory of 1076	1964	rundll32.exe	rundll32.exe
PID 1964 wrote to memory of 1076	1964	rundll32.exe	rundll32.exe
PID 1964 wrote to memory of 1076	1964	rundll32.exe	rundll32.exe
PID 1076 wrote to memory of 1284	1076	rundll32.exe	mssecsvc.exe
PID 1076 wrote to memory of 1284	1076	rundll32.exe	mssecsvc.exe
PID 1076 wrote to memory of 1284	1076	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2adf3df26c4c3f88f288958bfaf9710d_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1964

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2adf3df26c4c3f88f288958bfaf9710d_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1076

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1284

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4276

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:228

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4060 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:1368

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

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Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
069ea687378fc92fe2e6c3860a151fbc

SHA1
79fe3b5bff6041adcff16339b3974eff4d8125d3

SHA256
9cf90d4a25d502433029c2e23e0c9681be623e191eaa249717183a9f2582b863

SHA512
b4724f8a47ba0c2c6eaa56e55ab7b94d16291c1f9ee47adecaeb22d90f3b4ee7b50d007ce1beb9c746b5278e7060cfa9736260ac568dd50ea162d9e68a35a187

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
4e3fa0284f0e97a0ba2864336c379387

SHA1
9e295cef404a6bc978f38ace5bd5530483acb382

SHA256
a0281ff1352d0668c4d8dda720bb53c13e34d73fa11c405183ac7dc7b04472de

SHA512
2abac2bf06776836a024153616be4edde903684a143f363e603a8d99b11919733ea750e5cdb80fe06742e9f3b4d55f7301cc882a57837a908bc2ff2baf169e55

Download Submit