wannacry | 01e0a9e78f32164f518ac8195f1f59012e2e9c7050181506ca594546b4be3fa1

Analysis

max time kernel
151s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/05/2024, 23:26

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
7399cd7ebd2ed59f60e672b59fe24b1e_JaffaCakes118.dll
Size 5.0MB
Sample240525-3e6hhafa79
SHA256 01e0a9e78f32164f518ac8195f1f59012e2e9c7050181506ca594546b4be3fa1
MD5 7399cd7ebd2ed59f60e672b59fe24b1e
SHA1 2d0c72260f7ddd8834b297b3924ec0c840fd0893
SHA512 7056b42887555fd92322f2f4b9e48dcbe60205247d28c639bc1c6491c6b181b982d1e4e17f1971a587ed2850fd3293785eab5e2f02d37e6a3f118cf3b9315e47
SSDEEP 98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P59:TDqPe1Cxcxk3ZAEUad
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3033) 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

pid	Process
944	mssecsvc.exe
2148	mssecsvc.exe
2412	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

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

description	ioc	Process
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
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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4136 wrote to memory of 3848	4136	rundll32.exe	91
PID 4136 wrote to memory of 3848	4136	rundll32.exe	91
PID 4136 wrote to memory of 3848	4136	rundll32.exe	91
PID 3848 wrote to memory of 944	3848	rundll32.exe	92
PID 3848 wrote to memory of 944	3848	rundll32.exe	92
PID 3848 wrote to memory of 944	3848	rundll32.exe	92

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7399cd7ebd2ed59f60e672b59fe24b1e_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4136
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7399cd7ebd2ed59f60e672b59fe24b1e_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3848
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:944
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2412

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2148

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=4612 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8
1⤵
PID:5072

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

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 74313cfbc7ed6dd96a4e71257668cabc537081cea5291d71200b26b146e2c247
MD5 1b15e08a5a18357ba188888f53aeed01
SHA1 862514337374a54d26e86f1df39a0800c5cd84f6
SHA512 ca413d0ed266ac3e5fc27020dd2a200549a101fe5f8cd937353bdf61775335865dd972a8932b2d5fc1f8dd3446d39b6551f17d33d96060a261908cad0505bafe
SSDEEP 98304:XDqPoBhz1aRxcSUDk36SAEdhvxWa9P592:XDqPe1Cxcxk3ZAEUadi
MD5 SHA1 SHA512 SSDEEP

Submit Download

tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 bb8f6f081677fc409d2d8b4701f2567e61e5892f27fdd04bc0106cf44561d1c9
MD5 491cbf257f5a5480598928b92700b29e
SHA1 1d6d79f23d2a3675cbb4b2202e819a7930494212
SHA512 fc516169f29c9aa21cc6e594afe29517c7de979feafa862b21609bf0b8ba549067605d915054e07616cc5e408f7d6193a16aca0fe047bf0f7f825b8fd1099642
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9PAMEcaEaux:QqPoBhz1aRxcSUDk36SAEdhvxWa9P59x
MD5 SHA1 SHA512 SSDEEP