wannacry | ee9beaac9a91e545a3df9938210ed8f97f68b899bec28fbd16756f8f5d957527

Resubmissions

04/12/2024, 19:33

241204-x9h3sssreq 10

04/12/2024, 01:46

241204-b7agzsvpgx 10

Analysis

max time kernel
95s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2024, 19:33

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General

Target

ee9beaac9a91e545a3df9938210ed8f97f68b899bec28fbd16756f8f5d957527.dll
Size

5.0MB
MD5

f73f5c92ad079185008ed26e408f8781
SHA1

7fa06bf2e5951d1ffc7d1d71ddc26829bbdccc0c
SHA256

ee9beaac9a91e545a3df9938210ed8f97f68b899bec28fbd16756f8f5d957527
SHA512

6e5977b5c380a3e058f3ee5a811a1410233e4a28111a0f7492d1a0c185bd4ef2c3fb00946dfc98c32f8004b27ffb37ffdeffa5d78a87fb7890ddafba8c3d0e55
SSDEEP

24576:JbLgdelLgiHIIBA7Od057/hZWI86X6LBhiLeTLQD2ouJ:JnjNgmDQTujbwEK4

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 (1777) 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 2 IoCs

pid	Process
1904	mssecsvc.exe
1096	mssecsvc.exe

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

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 3988	4692	rundll32.exe	82
PID 4692 wrote to memory of 3988	4692	rundll32.exe	82
PID 4692 wrote to memory of 3988	4692	rundll32.exe	82
PID 3988 wrote to memory of 1904	3988	rundll32.exe	83
PID 3988 wrote to memory of 1904	3988	rundll32.exe	83
PID 3988 wrote to memory of 1904	3988	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ee9beaac9a91e545a3df9938210ed8f97f68b899bec28fbd16756f8f5d957527.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ee9beaac9a91e545a3df9938210ed8f97f68b899bec28fbd16756f8f5d957527.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3988
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:1904

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1096

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\mssecsvc.exe

Filesize
3.6MB

MD5
7d180f6cb4f1886d777e4e64e0ff7cbb

SHA1
a302c4e6f5e5558a1e0014e73a5c5a3db0a3f89e

SHA256
ddc9263c94a44620bd3588f1f6ad130c7a797986c775d4724274587b5a22216e

SHA512
e3f286d920cf936b7754dfe0003b67487499f03827dab2ca2c34083052a8d462dcf7b56c4812d7e8c6d6dada61ca0ff9da3326169c4da35cc6a11bfd41cd143a

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