wannacry | 116a3d9bee8547ca797766aa1093298a06ec5ae8f5a64a96adf506f651fa08ae

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, 04:50

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General

Target
08624bdd0f100619a24d1fda1985fb9d.dll
Size 5.0MB
Sample220720-ff96rabhh6
SHA256 116a3d9bee8547ca797766aa1093298a06ec5ae8f5a64a96adf506f651fa08ae
MD5 08624bdd0f100619a24d1fda1985fb9d
SHA1 3dc3744b17f1d3f2d863e3c465cea579e34b6aa8
SHA512 551986630336a50823b8c055e73765d9ed39d6f70699ab968e92b5bd461f3cb153210a7a6d09c6afe7e4b3c29e1ac1bf6b65d33e39fbffb04c0537f8c6bb3053
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 (3157) 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
3336	mssecsvc.exe
2236	mssecsvc.exe
2052	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\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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3648 wrote to memory of 4004	3648	rundll32.exe	77
PID 3648 wrote to memory of 4004	3648	rundll32.exe	77
PID 3648 wrote to memory of 4004	3648	rundll32.exe	77
PID 4004 wrote to memory of 3336	4004	rundll32.exe	78
PID 4004 wrote to memory of 3336	4004	rundll32.exe	78
PID 4004 wrote to memory of 3336	4004	rundll32.exe	78

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\08624bdd0f100619a24d1fda1985fb9d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3648
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\08624bdd0f100619a24d1fda1985fb9d.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4004
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3336
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2052

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2236

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 7caafa637dfa5a8f9a021ffd41b32640d9ed4b24e8972d0f6415e469612e7922
MD5 faa43631ebe4f894b6c9149796524b61
SHA1 6fcab85e40ae05de7356f9a53f73ae1f7de811c1
SHA512 10c55c9b764b806408fb0c46f116299f782d19e0c93c8816afa5631cfa03a6167fefaafa37b12d0c941886bd7b33165c51ee6b7e129ff1784f4c9d493ecfe165
SSDEEP 98304:XDqPoBhz1aRxcSUDk36SAEdhvxWa98U2CmNDFJeDL:XDqPe1Cxcxk3ZAEUaiI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 7caafa637dfa5a8f9a021ffd41b32640d9ed4b24e8972d0f6415e469612e7922
MD5 faa43631ebe4f894b6c9149796524b61
SHA1 6fcab85e40ae05de7356f9a53f73ae1f7de811c1
SHA512 10c55c9b764b806408fb0c46f116299f782d19e0c93c8816afa5631cfa03a6167fefaafa37b12d0c941886bd7b33165c51ee6b7e129ff1784f4c9d493ecfe165
SSDEEP 98304:XDqPoBhz1aRxcSUDk36SAEdhvxWa98U2CmNDFJeDL:XDqPe1Cxcxk3ZAEUaiI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 7caafa637dfa5a8f9a021ffd41b32640d9ed4b24e8972d0f6415e469612e7922
MD5 faa43631ebe4f894b6c9149796524b61
SHA1 6fcab85e40ae05de7356f9a53f73ae1f7de811c1
SHA512 10c55c9b764b806408fb0c46f116299f782d19e0c93c8816afa5631cfa03a6167fefaafa37b12d0c941886bd7b33165c51ee6b7e129ff1784f4c9d493ecfe165
SSDEEP 98304:XDqPoBhz1aRxcSUDk36SAEdhvxWa98U2CmNDFJeDL:XDqPe1Cxcxk3ZAEUaiI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 63d87b364226152e313d7a54ba8f801c165350f0a148ece055b750c947209e50
MD5 c487b2b24e262e22b209878c5f9ef136
SHA1 4a135a6c41433fb0b18644968a65e40aae275774
SHA512 3067f6cd7ab1164e6b5d423930e445bdf18de99b9b7b3a2966ffae0c34b959e1812bf8971324cb41ce54fe4fe15b10bb47e7b7e35866031995e68066ece81fc7
SSDEEP 98304:QqPoBhz1aRxcSUDk36SAEdhvxWa98U2CmNDFJeDZ:QqPe1Cxcxk3ZAEUaia
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