wannacry | 633b81cf245a7c616d6ec09ac4a2093d4b1b5f484f81c9b7f4ad142e8a5b0f0d

General

Target

a9097ff46602fea3fb6e59ecc29d15b7.dll
Size

5.0MB
MD5

a9097ff46602fea3fb6e59ecc29d15b7
SHA1

03acf8a9a382461e4d1980be39472f7c0490c766
SHA256

633b81cf245a7c616d6ec09ac4a2093d4b1b5f484f81c9b7f4ad142e8a5b0f0d
SHA512

462ea792b18377673603f2d3db3ca714ea92eae8a429e2f896cff7127679465951a78703def597d4d9fde30f07aabef30a37b20a5df580e6ea9941a49af4ed11

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (996) 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

1912 mssecsvc.exe
468 mssecsvc.exe
1456 tasksche.exe

pid	process
1912	mssecsvc.exe
468	mssecsvc.exe
1456	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\26-23-c3-8c-41-59	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{53AD3FDE-7298-4E50-9853-0162DA26E8F8}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{53AD3FDE-7298-4E50-9853-0162DA26E8F8}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{53AD3FDE-7298-4E50-9853-0162DA26E8F8}\WpadDecisionTime = 60ecd2c2f79bd801	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{53AD3FDE-7298-4E50-9853-0162DA26E8F8}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{53AD3FDE-7298-4E50-9853-0162DA26E8F8}\WpadDecision = "0"	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\Wpad\26-23-c3-8c-41-59\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-23-c3-8c-41-59\WpadDecisionTime = 60ecd2c2f79bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-23-c3-8c-41-59\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	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 (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 (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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00bb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{53AD3FDE-7298-4E50-9853-0162DA26E8F8}\26-23-c3-8c-41-59	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 752 wrote to memory of 336	752	rundll32.exe	rundll32.exe
PID 752 wrote to memory of 336	752	rundll32.exe	rundll32.exe
PID 752 wrote to memory of 336	752	rundll32.exe	rundll32.exe
PID 752 wrote to memory of 336	752	rundll32.exe	rundll32.exe
PID 752 wrote to memory of 336	752	rundll32.exe	rundll32.exe
PID 752 wrote to memory of 336	752	rundll32.exe	rundll32.exe
PID 752 wrote to memory of 336	752	rundll32.exe	rundll32.exe
PID 336 wrote to memory of 1912	336	rundll32.exe	mssecsvc.exe
PID 336 wrote to memory of 1912	336	rundll32.exe	mssecsvc.exe
PID 336 wrote to memory of 1912	336	rundll32.exe	mssecsvc.exe
PID 336 wrote to memory of 1912	336	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a9097ff46602fea3fb6e59ecc29d15b7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:752

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a9097ff46602fea3fb6e59ecc29d15b7.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:336

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1912

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1456

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:468

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
2ff55dfcbe060b38c067706b69580bbf

SHA1
0ccf0a375c85a1396837908acabe0bc290508860

SHA256
18533c7d5f0317d363fc17a470f594304827f06d58258969bc9ccde3ec1dbfe6

SHA512
30587dc0407fd6d2af7dc9c1b100ff74e2d9b9c052be87c9bc3f49246205462c2bd34ab93dde147cfccd17422d99488d8f5fe280c7834fc644434b0076c62167

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
2ff55dfcbe060b38c067706b69580bbf

SHA1
0ccf0a375c85a1396837908acabe0bc290508860

SHA256
18533c7d5f0317d363fc17a470f594304827f06d58258969bc9ccde3ec1dbfe6

SHA512
30587dc0407fd6d2af7dc9c1b100ff74e2d9b9c052be87c9bc3f49246205462c2bd34ab93dde147cfccd17422d99488d8f5fe280c7834fc644434b0076c62167

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
2ff55dfcbe060b38c067706b69580bbf

SHA1
0ccf0a375c85a1396837908acabe0bc290508860

SHA256
18533c7d5f0317d363fc17a470f594304827f06d58258969bc9ccde3ec1dbfe6

SHA512
30587dc0407fd6d2af7dc9c1b100ff74e2d9b9c052be87c9bc3f49246205462c2bd34ab93dde147cfccd17422d99488d8f5fe280c7834fc644434b0076c62167

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
94fe89675454f565792ceffe88f4ff8d

SHA1
888967d3ee02ea27602cc7a7897ac28f3ac02a9b

SHA256
ad823ae6518d2a3c55600ca0898a3fa6526df57237826f03ba7aa0f139039048

SHA512
8ab9167385244b75574806a30602dd7786092053649b543f1e6e383bea19c110d573d4f0c78cf36497c62f26b9d51fc74c5a530e342ccf32db4f5a09799dcfeb

Download Submit
memory/336-54-0x0000000000000000-mapping.dmp

Download
memory/336-55-0x0000000074D61000-0x0000000074D63000-memory.dmp

Filesize
8KB

Download
memory/1912-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads