wannacry | 932e30b225064e714d489eb2dc8b9fabc78f6f18858afdc34cb55174b128b013

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, 02:00

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General

Target
d8b98dc9e3c6dab04b2abb1224335ac3.dll
Size 5.0MB
Sample220720-ce1ddaahar
SHA256 932e30b225064e714d489eb2dc8b9fabc78f6f18858afdc34cb55174b128b013
MD5 d8b98dc9e3c6dab04b2abb1224335ac3
SHA1 9528b4df7d60103b82edf207ba6533b641d8b354
SHA512 28f8669c8ad1b805f4ff5bed7564a4353f160bae8c7b3b2924cebf91073aefa1a4c2ea7e8bb7282b14dd7572e0f596675885611d97cbf420ff30cdc2855c9fce
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 (3223) 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
2700	mssecsvc.exe
720	mssecsvc.exe
860	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
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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3224 wrote to memory of 3756	3224	rundll32.exe	75
PID 3224 wrote to memory of 3756	3224	rundll32.exe	75
PID 3224 wrote to memory of 3756	3224	rundll32.exe	75
PID 3756 wrote to memory of 2700	3756	rundll32.exe	76
PID 3756 wrote to memory of 2700	3756	rundll32.exe	76
PID 3756 wrote to memory of 2700	3756	rundll32.exe	76

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d8b98dc9e3c6dab04b2abb1224335ac3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3224
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d8b98dc9e3c6dab04b2abb1224335ac3.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3756
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:2700
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:860

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:720

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 70e32c1c00911fc5b727eb222af659cb0d0065fdc888cd3ff5c30d88cb09e5f3
MD5 15f66142f92f4bca012956eba0ffca26
SHA1 9f16128023383556df744c60bb545244a4f74800
SHA512 a75b29a2824c3dfb76984590f3e3036ab1f31f86d1ec136f46d3f0c1deb750d48395e65c390066ef3b2b8f52feeac1b87928195d23f3ce6d5b954bccd29d86d7
SSDEEP 98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P59Uc/gp2HI:yDqPe1Cxcxk3ZAEUadvg4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 70e32c1c00911fc5b727eb222af659cb0d0065fdc888cd3ff5c30d88cb09e5f3
MD5 15f66142f92f4bca012956eba0ffca26
SHA1 9f16128023383556df744c60bb545244a4f74800
SHA512 a75b29a2824c3dfb76984590f3e3036ab1f31f86d1ec136f46d3f0c1deb750d48395e65c390066ef3b2b8f52feeac1b87928195d23f3ce6d5b954bccd29d86d7
SSDEEP 98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P59Uc/gp2HI:yDqPe1Cxcxk3ZAEUadvg4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 70e32c1c00911fc5b727eb222af659cb0d0065fdc888cd3ff5c30d88cb09e5f3
MD5 15f66142f92f4bca012956eba0ffca26
SHA1 9f16128023383556df744c60bb545244a4f74800
SHA512 a75b29a2824c3dfb76984590f3e3036ab1f31f86d1ec136f46d3f0c1deb750d48395e65c390066ef3b2b8f52feeac1b87928195d23f3ce6d5b954bccd29d86d7
SSDEEP 98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P59Uc/gp2HI:yDqPe1Cxcxk3ZAEUadvg4HI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 6f5de686ba908b8353ef520499ffd3fe4937e4ea10194c6e4aa3a078b02d7f99
MD5 0f43e29d5ea349a59b7209cc96e4dc10
SHA1 ceda6aef56055f5284c726985f07793542ceaa15
SHA512 48f69a1991edd46429f8f939c974e0fdc9368ec165a60ac8267d17309003ab7afa008a9f68205c55ee84625b1d644692329a0e8f86e54ccc4309101da6922018
SSDEEP 98304:QqPoBhz1aRxcSUDk36SAEdhvxWa9P59Uc/gp2Hj:QqPe1Cxcxk3ZAEUadvg4Hj
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