wannacry | fbbc74c876c011e9a98811a41d19a08336c31d9830394aadb4962ae25f5e6522

Analysis

max time kernel
151s
max time network
154s
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, 07:20

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General

Target
97573e221ea8257e786a280d95368ef3.dll
Size 5.0MB
Sample220720-h55cxadae9
SHA256 fbbc74c876c011e9a98811a41d19a08336c31d9830394aadb4962ae25f5e6522
MD5 97573e221ea8257e786a280d95368ef3
SHA1 77926c56cc3147b7856ffbbdd9ea415c400336e1
SHA512 7e1f9c2c424b7e2fb4fda3443734401108a3f469d203baa4bc7e76347c6454570341da8af6164ff7ff19612b018d99ea640e809e4b5aca4d57c9204498933c3d
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 (3070) 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
5048	mssecsvc.exe
2080	mssecsvc.exe
4992	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 4212 wrote to memory of 4120	4212	rundll32.exe	75
PID 4212 wrote to memory of 4120	4212	rundll32.exe	75
PID 4212 wrote to memory of 4120	4212	rundll32.exe	75
PID 4120 wrote to memory of 5048	4120	rundll32.exe	76
PID 4120 wrote to memory of 5048	4120	rundll32.exe	76
PID 4120 wrote to memory of 5048	4120	rundll32.exe	76

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\97573e221ea8257e786a280d95368ef3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4212
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\97573e221ea8257e786a280d95368ef3.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4120
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:5048
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4992

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2080

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 ffd6b1499aa3d5d4c26e056a7ff237a838608e5b411abeac5319096a1ed67061
MD5 d28e3ad6d6df46aff167919188bed7c5
SHA1 3abc462bfcb0f172f6852914215238a3863b29aa
SHA512 dd377ed7183efcf5bef419faa32b7d0fcaaa8e22ed44af877ddbf4b3f2b07f2b5dc328fff88bded78d455f21d8a816b7b163c1ebb13e99a7eb2415098dbe4478
SSDEEP 49152:2nAQqMSPbcBVQejYNRx+TSqTdX1HkQo6SAARdhnv+:yDqPoBhWRxcSUDk36SAEdhv+
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 ffd6b1499aa3d5d4c26e056a7ff237a838608e5b411abeac5319096a1ed67061
MD5 d28e3ad6d6df46aff167919188bed7c5
SHA1 3abc462bfcb0f172f6852914215238a3863b29aa
SHA512 dd377ed7183efcf5bef419faa32b7d0fcaaa8e22ed44af877ddbf4b3f2b07f2b5dc328fff88bded78d455f21d8a816b7b163c1ebb13e99a7eb2415098dbe4478
SSDEEP 49152:2nAQqMSPbcBVQejYNRx+TSqTdX1HkQo6SAARdhnv+:yDqPoBhWRxcSUDk36SAEdhv+
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 ffd6b1499aa3d5d4c26e056a7ff237a838608e5b411abeac5319096a1ed67061
MD5 d28e3ad6d6df46aff167919188bed7c5
SHA1 3abc462bfcb0f172f6852914215238a3863b29aa
SHA512 dd377ed7183efcf5bef419faa32b7d0fcaaa8e22ed44af877ddbf4b3f2b07f2b5dc328fff88bded78d455f21d8a816b7b163c1ebb13e99a7eb2415098dbe4478
SSDEEP 49152:2nAQqMSPbcBVQejYNRx+TSqTdX1HkQo6SAARdhnv+:yDqPoBhWRxcSUDk36SAEdhv+
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 dea4fe4ebc18c0e6d6546f5b9efa186c88f71428adf8c2a490ba944a58d54bdc
MD5 da79cc85df15b1dbbdeff63fb8274069
SHA1 363e87dfa6e0d4080cd7cf072568b78de83bd4a2
SHA512 62b9105eaaba20481df03f6349a350d10ed8a15ac34a76457822ccc4c1bcbe37e28a5b6238a1c106537d9ff251bf96829e52ade46fa3a452af6aafdce0420c80
SSDEEP 49152:nQqMSPbcBVQejYNRx+TSqTdX1HkQo6SAARdhnvW:QqPoBhWRxcSUDk36SAEdhvW
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