wannacry | 8e7872addc60500649a3c3e8c563e78909afebc760f60061029360aa1d6c49ad

Analysis

max time kernel
150s
max time network
153s
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, 07:00

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General

Target
88e26586c64f0e8acd35eccacdf340c4.dll
Size 5.0MB
Sample220720-hsm8vsdddk
SHA256 8e7872addc60500649a3c3e8c563e78909afebc760f60061029360aa1d6c49ad
MD5 88e26586c64f0e8acd35eccacdf340c4
SHA1 aeb6091ac73c546b59c31bf9ed8a1f01500a8a05
SHA512 f7f3667c06aaf5d6977e839488ad939960a1bd44fd741d1c6e0a56010889977f400a2dbc59224eb500470169bbd5fe524f1612fc56ea9334d34e1847e8b4c85d
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 (2849) 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 3 IoCs

pid	Process
872	mssecsvc.exe
5064	mssecsvc.exe
1600	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 Scanning
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\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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3756 wrote to memory of 5112	3756	rundll32.exe	77
PID 3756 wrote to memory of 5112	3756	rundll32.exe	77
PID 3756 wrote to memory of 5112	3756	rundll32.exe	77
PID 5112 wrote to memory of 872	5112	rundll32.exe	78
PID 5112 wrote to memory of 872	5112	rundll32.exe	78
PID 5112 wrote to memory of 872	5112	rundll32.exe	78

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\88e26586c64f0e8acd35eccacdf340c4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3756
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\88e26586c64f0e8acd35eccacdf340c4.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:5112
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:872
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1600

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:5064

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

mssecsvc.exe

Path C:\WINDOWS\mssecsvc.exe
Size 3.6MB
SHA256 b575aac2353b0991dd037ac0bac8c402299f87621daee82b5a14cadfab902a0a
MD5 c685c4921f6fc969bbfcd03c9b96aa27
SHA1 fc5cdc9a6b8b451bd98c851904cfd00024444d5f
SHA512 dfc46733dae6a03fc9f44b310612886ab4213fa5d2601925eafc1d1b8b7beb436b8cf049a5ab1fc5bb2522202bfe42834b4e36343317d48704a2403d44476e84
SSDEEP 98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9C593R8yAVp2HJ:yDqPe1Cxcxk3ZAEUa0zR8yc4HJ
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 b575aac2353b0991dd037ac0bac8c402299f87621daee82b5a14cadfab902a0a
MD5 c685c4921f6fc969bbfcd03c9b96aa27
SHA1 fc5cdc9a6b8b451bd98c851904cfd00024444d5f
SHA512 dfc46733dae6a03fc9f44b310612886ab4213fa5d2601925eafc1d1b8b7beb436b8cf049a5ab1fc5bb2522202bfe42834b4e36343317d48704a2403d44476e84
SSDEEP 98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9C593R8yAVp2HJ:yDqPe1Cxcxk3ZAEUa0zR8yc4HJ
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 b575aac2353b0991dd037ac0bac8c402299f87621daee82b5a14cadfab902a0a
MD5 c685c4921f6fc969bbfcd03c9b96aa27
SHA1 fc5cdc9a6b8b451bd98c851904cfd00024444d5f
SHA512 dfc46733dae6a03fc9f44b310612886ab4213fa5d2601925eafc1d1b8b7beb436b8cf049a5ab1fc5bb2522202bfe42834b4e36343317d48704a2403d44476e84
SSDEEP 98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9C593R8yAVp2HJ:yDqPe1Cxcxk3ZAEUa0zR8yc4HJ
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 096bb4d661ba296669cd774ca0267d36bb0dc663044ca4c338e63bcfd21c8514
MD5 d7eea5a2a97c0f51b4f41c076accf62c
SHA1 1619c6589c901e12196626db23dc8c87c4c1995b
SHA512 abdf60610a2a963efd34caa7df651c3a43cad254a187654e132d4081cbd2dcf099f52c97f6f8818e1106611d2893196d66ff825ea8cbbe767da87a72ce2638af
SSDEEP 98304:QqPoBhz1aRxcSUDk36SAEdhvxWa9C593R8yAVp2H5:QqPe1Cxcxk3ZAEUa0zR8yc4H5
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