wannacry | 70464f96d9da53e3030e62a82bf60910b0cc042a1d679f97524d0a1296ef256b

General

Target

dfa9f37c769db7c48c6442fedbc0fdbe.dll
Size

5.0MB
MD5

dfa9f37c769db7c48c6442fedbc0fdbe
SHA1

b95b419a55747a6b64c68f6a1e329d7cba0bb8cc
SHA256

70464f96d9da53e3030e62a82bf60910b0cc042a1d679f97524d0a1296ef256b
SHA512

b2ddcc3ffe8ee22ca945a3a369a2c1fda1949f236cd93be5f6af9621a88eceba88e22e3e6d6f8e1bbacc9c0c0dc0f5feaa6951a622b49d11d093c56e0ef5bb8a

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1300) 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

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1908 mssecsvc.exe
2012 mssecsvc.exe
2024 tasksche.exe

pid	process
1908	mssecsvc.exe
2012	mssecsvc.exe
2024	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67F4D8E0-033A-4E89-9265-8ABDDD06C242}\36-46-d2-a1-6f-e4	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00f2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67F4D8E0-033A-4E89-9265-8ABDDD06C242}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67F4D8E0-033A-4E89-9265-8ABDDD06C242}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67F4D8E0-033A-4E89-9265-8ABDDD06C242}\WpadDecisionTime = 807c8693d79bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-46-d2-a1-6f-e4\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-46-d2-a1-6f-e4\WpadDecisionTime = 807c8693d79bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67F4D8E0-033A-4E89-9265-8ABDDD06C242}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67F4D8E0-033A-4E89-9265-8ABDDD06C242}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-46-d2-a1-6f-e4	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-46-d2-a1-6f-e4\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 308 wrote to memory of 1124	308	rundll32.exe	rundll32.exe
PID 308 wrote to memory of 1124	308	rundll32.exe	rundll32.exe
PID 308 wrote to memory of 1124	308	rundll32.exe	rundll32.exe
PID 308 wrote to memory of 1124	308	rundll32.exe	rundll32.exe
PID 308 wrote to memory of 1124	308	rundll32.exe	rundll32.exe
PID 308 wrote to memory of 1124	308	rundll32.exe	rundll32.exe
PID 308 wrote to memory of 1124	308	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 1908	1124	rundll32.exe	mssecsvc.exe
PID 1124 wrote to memory of 1908	1124	rundll32.exe	mssecsvc.exe
PID 1124 wrote to memory of 1908	1124	rundll32.exe	mssecsvc.exe
PID 1124 wrote to memory of 1908	1124	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dfa9f37c769db7c48c6442fedbc0fdbe.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:308

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dfa9f37c769db7c48c6442fedbc0fdbe.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1124

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1908

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2024

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2012

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
20d878ad8b3b006771ad4f61d332c91b

SHA1
88454b66584a5f89bec30dc923e7408737400654

SHA256
1d82b20304266667f079b737ddff9a0ed8aac261935cacb8ff76972d600d768f

SHA512
f8c9ce15cc6c376f7364c1e89e32775f8ea4e5b3b12e4caa28f9d33b1cbe7092a857dc06b085207b469bf184eb3f5415ed42866237ecc4ed54286698142f65b1

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
20d878ad8b3b006771ad4f61d332c91b

SHA1
88454b66584a5f89bec30dc923e7408737400654

SHA256
1d82b20304266667f079b737ddff9a0ed8aac261935cacb8ff76972d600d768f

SHA512
f8c9ce15cc6c376f7364c1e89e32775f8ea4e5b3b12e4caa28f9d33b1cbe7092a857dc06b085207b469bf184eb3f5415ed42866237ecc4ed54286698142f65b1

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
20d878ad8b3b006771ad4f61d332c91b

SHA1
88454b66584a5f89bec30dc923e7408737400654

SHA256
1d82b20304266667f079b737ddff9a0ed8aac261935cacb8ff76972d600d768f

SHA512
f8c9ce15cc6c376f7364c1e89e32775f8ea4e5b3b12e4caa28f9d33b1cbe7092a857dc06b085207b469bf184eb3f5415ed42866237ecc4ed54286698142f65b1

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
90159ec7837348153f7a314fcf7b563e

SHA1
275be3027d7984b21d595ae7b335f57654078b60

SHA256
386a6cccdf652065f35f93cc0b401d008cf8af42264dc62852e7dc5c50dbec5d

SHA512
c2fae6702f810c1e23868ee24fb9817930c4cdef8364a3164264ec089124fab4a3cab3fc3862a3bc45ed629677df0deb6652a1bc157d81ffb6179bfc03b5fd97

Download Submit
memory/1124-54-0x0000000000000000-mapping.dmp

Download
memory/1124-55-0x0000000075481000-0x0000000075483000-memory.dmp

Filesize
8KB

Download
memory/1908-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads