wannacry | 430de6aab92628cd4df7d02a1cd9cd953d0c2f15da9ed6cb71d6034f8507d0f9

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
20/07/2022, 04:39

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General

Target
2e1536b8e34deaf8e2b29421f2a9d4e8.dll
Size 5.0MB
Sample220720-e9yt5scdhn
SHA256 430de6aab92628cd4df7d02a1cd9cd953d0c2f15da9ed6cb71d6034f8507d0f9
MD5 2e1536b8e34deaf8e2b29421f2a9d4e8
SHA1 395224f180456a3cc9b27059f9114272bd1b49e8
SHA512 3f0ea2306ab1c9fdcbc0cbed368e29646ca3900beafc0c15777763eb6ff2de31b1830890614156cfb29c29da7581682169aef38fa4d0d127f8fb187a5ffa6919
MD5 SHA1 SHA512

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3176) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046

Executes dropped EXE 2 IoCs

pid	Process
4128	mssecsvr.exe
2932	mssecsvr.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 4376	1184	rundll32.exe	77
PID 1184 wrote to memory of 4376	1184	rundll32.exe	77
PID 1184 wrote to memory of 4376	1184	rundll32.exe	77
PID 4376 wrote to memory of 4128	4376	rundll32.exe	78
PID 4376 wrote to memory of 4128	4376	rundll32.exe	78
PID 4376 wrote to memory of 4128	4376	rundll32.exe	78

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2e1536b8e34deaf8e2b29421f2a9d4e8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\2e1536b8e34deaf8e2b29421f2a9d4e8.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4376
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4128

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2932

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mssecsvr.exe

Path C:\WINDOWS\mssecsvr.exe
Size 2.2MB
SHA256 06c872f12f820784e4964946f967642bbc0f21c2e842c2058710ac843639f620
MD5 97e868104e3797cfa871e38630db5c01
SHA1 d979431387994d0b13b2274208168ec56efe07c4
SHA512 393d6c62d7d7f71c41b0445aa36cc8850f6d868c4904191907b2c2ccf782f87269e68d2e0ef027922d7c600559db2edabdbb37c4ce1291ad6861f32c32e8abea
SSDEEP 49152:QnsEMSPbcBVQej/1INRx+TSqTdX1HkQo6SAALdhnvn:QfPoBhz1aRxcSUDk36SAmdhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 06c872f12f820784e4964946f967642bbc0f21c2e842c2058710ac843639f620
MD5 97e868104e3797cfa871e38630db5c01
SHA1 d979431387994d0b13b2274208168ec56efe07c4
SHA512 393d6c62d7d7f71c41b0445aa36cc8850f6d868c4904191907b2c2ccf782f87269e68d2e0ef027922d7c600559db2edabdbb37c4ce1291ad6861f32c32e8abea
SSDEEP 49152:QnsEMSPbcBVQej/1INRx+TSqTdX1HkQo6SAALdhnvn:QfPoBhz1aRxcSUDk36SAmdhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 06c872f12f820784e4964946f967642bbc0f21c2e842c2058710ac843639f620
MD5 97e868104e3797cfa871e38630db5c01
SHA1 d979431387994d0b13b2274208168ec56efe07c4
SHA512 393d6c62d7d7f71c41b0445aa36cc8850f6d868c4904191907b2c2ccf782f87269e68d2e0ef027922d7c600559db2edabdbb37c4ce1291ad6861f32c32e8abea
SSDEEP 49152:QnsEMSPbcBVQej/1INRx+TSqTdX1HkQo6SAALdhnvn:QfPoBhz1aRxcSUDk36SAmdhvn
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads