wannacry | 3d1e0c4f0ad98399d383ff63d4511e23dbbd0c421ce1aa00a7242c1ea9ccf96b

General

Target

3d1e0c4f0ad98399d383ff63d4511e23dbbd0c421ce1aa00a7242c1ea9ccf96b.dll
Size

5.0MB
MD5

af7cb7b0058e69830349b8437729633e
SHA1

a042a9bd9897515a125df309ca60de4b5451005a
SHA256

3d1e0c4f0ad98399d383ff63d4511e23dbbd0c421ce1aa00a7242c1ea9ccf96b
SHA512

be14fd51eceaf4397d15ad2874cfc6055ee536894498e8e235c156183a349547ff7b61aee2925f957e56ba7190149a40968c6e6ead526b8fae90f012f443d6d3

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1192) 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 2 IoCs

Processes:

mssecsvr.exemssecsvr.exe

pid process

1004 mssecsvr.exe
1176 mssecsvr.exe

pid	process
1004	mssecsvr.exe
1176	mssecsvr.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvr.exe

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

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvr.exe

description ioc process

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

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

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvr.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-e1-a2-8e-f2-24\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}\WpadDecisionTime = 501b3df7a68ed801	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}\WpadNetworkName = "Network 2"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-e1-a2-8e-f2-24	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f009a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8CCF2B33-683E-4220-94AC-20FAC7255C74}\fe-e1-a2-8e-f2-24	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-e1-a2-8e-f2-24\WpadDecisionTime = 501b3df7a68ed801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-e1-a2-8e-f2-24\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1312 wrote to memory of 2024	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 2024	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 2024	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 2024	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 2024	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 2024	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 2024	1312	rundll32.exe	rundll32.exe
PID 2024 wrote to memory of 1004	2024	rundll32.exe	mssecsvr.exe
PID 2024 wrote to memory of 1004	2024	rundll32.exe	mssecsvr.exe
PID 2024 wrote to memory of 1004	2024	rundll32.exe	mssecsvr.exe
PID 2024 wrote to memory of 1004	2024	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3d1e0c4f0ad98399d383ff63d4511e23dbbd0c421ce1aa00a7242c1ea9ccf96b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1312

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3d1e0c4f0ad98399d383ff63d4511e23dbbd0c421ce1aa00a7242c1ea9ccf96b.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2024

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1004

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1176

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
f5377a582a18f3e4c7df8f7e85079e5c

SHA1
401685302ae6df00f1ceb03cdb59002c7f805dbf

SHA256
9e5b8cb7fff2cad2823802eb9abcae0fb1743d50f420bb169464fa3903fe7b40

SHA512
63d6e4216ff5a8ca266f8cfdd684d7db08b82e63b21726e22a43ea82773035cfb48815e9aceb1fa04b648b7725145eb7c6c8f6c4fa77d2262039f364ad844408

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
f5377a582a18f3e4c7df8f7e85079e5c

SHA1
401685302ae6df00f1ceb03cdb59002c7f805dbf

SHA256
9e5b8cb7fff2cad2823802eb9abcae0fb1743d50f420bb169464fa3903fe7b40

SHA512
63d6e4216ff5a8ca266f8cfdd684d7db08b82e63b21726e22a43ea82773035cfb48815e9aceb1fa04b648b7725145eb7c6c8f6c4fa77d2262039f364ad844408

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
f5377a582a18f3e4c7df8f7e85079e5c

SHA1
401685302ae6df00f1ceb03cdb59002c7f805dbf

SHA256
9e5b8cb7fff2cad2823802eb9abcae0fb1743d50f420bb169464fa3903fe7b40

SHA512
63d6e4216ff5a8ca266f8cfdd684d7db08b82e63b21726e22a43ea82773035cfb48815e9aceb1fa04b648b7725145eb7c6c8f6c4fa77d2262039f364ad844408

Download Submit
memory/1004-56-0x0000000000000000-mapping.dmp

Download
memory/2024-54-0x0000000000000000-mapping.dmp

Download
memory/2024-55-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads