wannacry | ab30576101a7677a2e946d8000b13fa92e99a42cc63e750457495eada8934464

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
21/07/2024, 04:57

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General

Target
ab30576101a7677a2e946d8000b13fa92e99a42cc63e750457495eada8934464.dll
Size 5.0MB
Sample240721-flbkdavbpd
SHA256 ab30576101a7677a2e946d8000b13fa92e99a42cc63e750457495eada8934464
MD5 9aae6412b2dfc9ed503e6c7123e95579
SHA1 0582e125d46b2f1170aa4a3ee2a7d9117ca06b8a
SHA512 4fc0d530ba7df7898bdeadc28ad9f8dd80d809515868dd5e417190b3f23ef6a7c3f89e73010781c95a57e29de4f630c7b95ebff6eea4023afdb41ac4cdd103a9
SSDEEP 49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:+DqPoBhz1aRxcSUDk36SA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3168) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 3 IoCs

pid	Process
4812	mssecsvc.exe
3244	mssecsvc.exe
1704	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 Discovery
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 1464 wrote to memory of 4108	1464	rundll32.exe	84
PID 1464 wrote to memory of 4108	1464	rundll32.exe	84
PID 1464 wrote to memory of 4108	1464	rundll32.exe	84
PID 4108 wrote to memory of 4812	4108	rundll32.exe	85
PID 4108 wrote to memory of 4812	4108	rundll32.exe	85
PID 4108 wrote to memory of 4812	4108	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab30576101a7677a2e946d8000b13fa92e99a42cc63e750457495eada8934464.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1464
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab30576101a7677a2e946d8000b13fa92e99a42cc63e750457495eada8934464.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4108
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4812
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1704

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3244

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

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 14b07228402db4e997df65facfb306216e65e34daf496c2a2150d4602f4c1021
MD5 f5f79a6d2c9268979b23a5737e29eabd
SHA1 456a78b6e2cbb04b96c61b94549201478a0cead8
SHA512 3296ba6ceb0f4de57ac5cb62c02889a889f8d0a1327f3831f23903f4b5c8f42a06a2111ebb8bb5160ed5fccc819d613167067786f1a54231af49887e281f7a83
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAW:yDqPoBhz1aRxcSUDk36SA5
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 bcb589f1f9544b5123b3f61457f9e2461a3e1d04b3d816530ccc464750ba2af0
MD5 adb6baed15df3b7b9a1eed008391edb6
SHA1 b3dc3a2ea720105cfdfd9552d339c1371e8d109e
SHA512 27c7e4611da6814587882ac7c9c1904db0a75442b31ac03e93296a0b5cc2d8038b1350ed46e46d4459214b059e6f51ac5dd0951c00a8ad0a1c5071d645ac4027
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAe:QqPoBhz1aRxcSUDk36SA5
MD5 SHA1 SHA512 SSDEEP