wannacry | 3df8f4f1133965ed8ebe123a8e5565e20d10313c7ca7b3834f530c5ba3f6187a

General

Target

3df8f4f1133965ed8ebe123a8e5565e20d10313c7ca7b3834f530c5ba3f6187a.dll
Size

5.0MB
MD5

740b034f58fcaea5e65b5da0c148a3aa
SHA1

1af775bb36845c3050e05ae9da4074430b8320d2
SHA256

3df8f4f1133965ed8ebe123a8e5565e20d10313c7ca7b3834f530c5ba3f6187a
SHA512

cc012c8cbdddae2c70617780b03f5f052745c502b195a083527833d82751328a04e7cf2b20f9d3ee13140dd381bb32dbbc82887b92551eba98b03351db70eccf

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1267) 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

1248 mssecsvr.exe
1360 mssecsvr.exe

pid	process
1248	mssecsvr.exe
1360	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	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B333092F-4844-431C-BAC4-DBE9CCB787AE}\ca-9e-58-30-4b-f6	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-9e-58-30-4b-f6\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ae000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-9e-58-30-4b-f6\WpadDecision = "0"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B333092F-4844-431C-BAC4-DBE9CCB787AE}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B333092F-4844-431C-BAC4-DBE9CCB787AE}\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-9e-58-30-4b-f6	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 (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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B333092F-4844-431C-BAC4-DBE9CCB787AE}\WpadDecisionTime = 60e161b3648dd801	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B333092F-4844-431C-BAC4-DBE9CCB787AE}\WpadNetworkName = "Network 2"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-9e-58-30-4b-f6\WpadDecisionTime = 60e161b3648dd801	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B333092F-4844-431C-BAC4-DBE9CCB787AE}	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1628 wrote to memory of 1464	1628	rundll32.exe	rundll32.exe
PID 1628 wrote to memory of 1464	1628	rundll32.exe	rundll32.exe
PID 1628 wrote to memory of 1464	1628	rundll32.exe	rundll32.exe
PID 1628 wrote to memory of 1464	1628	rundll32.exe	rundll32.exe
PID 1628 wrote to memory of 1464	1628	rundll32.exe	rundll32.exe
PID 1628 wrote to memory of 1464	1628	rundll32.exe	rundll32.exe
PID 1628 wrote to memory of 1464	1628	rundll32.exe	rundll32.exe
PID 1464 wrote to memory of 1248	1464	rundll32.exe	mssecsvr.exe
PID 1464 wrote to memory of 1248	1464	rundll32.exe	mssecsvr.exe
PID 1464 wrote to memory of 1248	1464	rundll32.exe	mssecsvr.exe
PID 1464 wrote to memory of 1248	1464	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3df8f4f1133965ed8ebe123a8e5565e20d10313c7ca7b3834f530c5ba3f6187a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1628

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3df8f4f1133965ed8ebe123a8e5565e20d10313c7ca7b3834f530c5ba3f6187a.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1464

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1248

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:1360

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

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Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
11eda742933713419b83278d141fd077

SHA1
0efee3bfe3697f7ae2f7c847a1f727a0c024f6c4

SHA256
facc04d26cad9081ed4ed0dbea9a60ec78b0083d430f069a5b65ff900e1ff237

SHA512
2a9c20dcfdc4862664557b67f884dec1fa87f43035d5cc9a2290e6b5949b65bf0409dd54dae423a12d0c104b865b66d1e7ecb972e30ef85cf0f56db293a70f63

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

MD5
11eda742933713419b83278d141fd077

SHA1
0efee3bfe3697f7ae2f7c847a1f727a0c024f6c4

SHA256
facc04d26cad9081ed4ed0dbea9a60ec78b0083d430f069a5b65ff900e1ff237

SHA512
2a9c20dcfdc4862664557b67f884dec1fa87f43035d5cc9a2290e6b5949b65bf0409dd54dae423a12d0c104b865b66d1e7ecb972e30ef85cf0f56db293a70f63

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

MD5
11eda742933713419b83278d141fd077

SHA1
0efee3bfe3697f7ae2f7c847a1f727a0c024f6c4

SHA256
facc04d26cad9081ed4ed0dbea9a60ec78b0083d430f069a5b65ff900e1ff237

SHA512
2a9c20dcfdc4862664557b67f884dec1fa87f43035d5cc9a2290e6b5949b65bf0409dd54dae423a12d0c104b865b66d1e7ecb972e30ef85cf0f56db293a70f63

Download Submit
memory/1248-56-0x0000000000000000-mapping.dmp

Download
memory/1464-54-0x0000000000000000-mapping.dmp

Download
memory/1464-55-0x0000000075EF1000-0x0000000075EF3000-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