wannacry | fb906531e1ea9546e4df878394a50b9e679201c23a7ac59f69f5de2e6c0963a9

General

Target

fb906531e1ea9546e4df878394a50b9e679201c23a7ac59f69f5de2e6c0963a9.dll
Size

5.0MB
MD5

1e4a4f54b53b3f7dc1910eab98c1ddb5
SHA1

d48ba36a7699596d169cab53165d0d69c3f3ab4f
SHA256

fb906531e1ea9546e4df878394a50b9e679201c23a7ac59f69f5de2e6c0963a9
SHA512

804bea7c06739406c349ad66fbae311543e407a0992adb9d24dbbce6b28a91bb014903ae3807f1167858123fcfd232dc7c64387b807c384d42b803d97b21d359
SSDEEP

49152:RnGMSPbcBVL1INRx+TSqTdX1HkQo6SAARdhnv:1GPoB91aRxcSUDk36SAEdhv

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1261) 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

1656 mssecsvr.exe
1728 mssecsvr.exe

pid	process
1656	mssecsvr.exe
1728	mssecsvr.exe

Drops file in System32 directory 3 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
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\Q3U60L6W.txt	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\Q3U60L6W.txt	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
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\UNCAsIntranet = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D62F913D-C875-4B27-9EC3-2ED4CE68E8C2}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D62F913D-C875-4B27-9EC3-2ED4CE68E8C2}\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-d1-ff-83-dd-21	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\Wpad\52-d1-ff-83-dd-21\WpadDecision = "0"	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\{D62F913D-C875-4B27-9EC3-2ED4CE68E8C2}	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D62F913D-C875-4B27-9EC3-2ED4CE68E8C2}\WpadDecisionTime = a03c614471dcd801	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{D62F913D-C875-4B27-9EC3-2ED4CE68E8C2}\52-d1-ff-83-dd-21	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-d1-ff-83-dd-21\WpadDecisionTime = a03c614471dcd801	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
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\Connections	mssecsvr.exe
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\ZoneMap\AutoDetect = "1"	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\Wpad\{D62F913D-C875-4B27-9EC3-2ED4CE68E8C2}\WpadNetworkName = "Network 2"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-d1-ff-83-dd-21\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1112 wrote to memory of 1472	1112	rundll32.exe	rundll32.exe
PID 1112 wrote to memory of 1472	1112	rundll32.exe	rundll32.exe
PID 1112 wrote to memory of 1472	1112	rundll32.exe	rundll32.exe
PID 1112 wrote to memory of 1472	1112	rundll32.exe	rundll32.exe
PID 1112 wrote to memory of 1472	1112	rundll32.exe	rundll32.exe
PID 1112 wrote to memory of 1472	1112	rundll32.exe	rundll32.exe
PID 1112 wrote to memory of 1472	1112	rundll32.exe	rundll32.exe
PID 1472 wrote to memory of 1656	1472	rundll32.exe	mssecsvr.exe
PID 1472 wrote to memory of 1656	1472	rundll32.exe	mssecsvr.exe
PID 1472 wrote to memory of 1656	1472	rundll32.exe	mssecsvr.exe
PID 1472 wrote to memory of 1656	1472	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fb906531e1ea9546e4df878394a50b9e679201c23a7ac59f69f5de2e6c0963a9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1112

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fb906531e1ea9546e4df878394a50b9e679201c23a7ac59f69f5de2e6c0963a9.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1472

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1656

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:1728

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
d6649cb748e4f5940595522ae491f5fe

SHA1
5199e158fab72c21127f6d0228832bee80502a40

SHA256
3bb93a692c19b232485464085a544475144c053ad806d824ff8954b1afc4c3f8

SHA512
41568abb90213686df960ed536e0158e88ccbd75f25e07b7ae20bc2dc4a1997506421b2b81690f9a79f6b2baa9d6a4091121a92035343f45f49a56e604330967

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

MD5
d6649cb748e4f5940595522ae491f5fe

SHA1
5199e158fab72c21127f6d0228832bee80502a40

SHA256
3bb93a692c19b232485464085a544475144c053ad806d824ff8954b1afc4c3f8

SHA512
41568abb90213686df960ed536e0158e88ccbd75f25e07b7ae20bc2dc4a1997506421b2b81690f9a79f6b2baa9d6a4091121a92035343f45f49a56e604330967

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

MD5
d6649cb748e4f5940595522ae491f5fe

SHA1
5199e158fab72c21127f6d0228832bee80502a40

SHA256
3bb93a692c19b232485464085a544475144c053ad806d824ff8954b1afc4c3f8

SHA512
41568abb90213686df960ed536e0158e88ccbd75f25e07b7ae20bc2dc4a1997506421b2b81690f9a79f6b2baa9d6a4091121a92035343f45f49a56e604330967

Download Submit
memory/1472-54-0x0000000000000000-mapping.dmp

Download
memory/1472-55-0x0000000074D61000-0x0000000074D63000-memory.dmp

Filesize
8KB

Download
memory/1656-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads