wannacry | fcf337a1914aa74016ddbc369980bf9a703e9eafc80c8e7053c642ef0052266f

General

Target

629e370b1d3ba9bf6724d7054bc89073.dll
Size

5.0MB
MD5

629e370b1d3ba9bf6724d7054bc89073
SHA1

76ec26415b600f0d373bd5fa24113e36b0f10ab3
SHA256

fcf337a1914aa74016ddbc369980bf9a703e9eafc80c8e7053c642ef0052266f
SHA512

2cc62c6eb7d50a1115f864fb0ee09930f5b87d3c5e83f5393e5650c81db265ee14724f348cb24260d6c255c45d7554544a968952843b37fd6ef061328f7152c2

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1291) 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

936 mssecsvr.exe
1064 mssecsvr.exe

pid	process
936	mssecsvr.exe
1064	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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-30-7e-c7-02-b9\WpadDecisionTime = d0513572f79bd801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-30-7e-c7-02-b9\WpadDecision = "0"	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
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\5.0\Cache\Cookies\CachePrefix = "Cookie:"	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9B2463B-EE20-46F4-B5BA-E3D70C2F83EB}\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9B2463B-EE20-46F4-B5BA-E3D70C2F83EB}\06-30-7e-c7-02-b9	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-30-7e-c7-02-b9\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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\Wpad\{B9B2463B-EE20-46F4-B5BA-E3D70C2F83EB}	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9B2463B-EE20-46F4-B5BA-E3D70C2F83EB}\WpadDecisionTime = d0513572f79bd801	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9B2463B-EE20-46F4-B5BA-E3D70C2F83EB}\WpadNetworkName = "Network 3"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-30-7e-c7-02-b9	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	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{B9B2463B-EE20-46F4-B5BA-E3D70C2F83EB}\WpadDecisionReason = "1"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 892 wrote to memory of 1756	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1756	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1756	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1756	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1756	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1756	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1756	892	rundll32.exe	rundll32.exe
PID 1756 wrote to memory of 936	1756	rundll32.exe	mssecsvr.exe
PID 1756 wrote to memory of 936	1756	rundll32.exe	mssecsvr.exe
PID 1756 wrote to memory of 936	1756	rundll32.exe	mssecsvr.exe
PID 1756 wrote to memory of 936	1756	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\629e370b1d3ba9bf6724d7054bc89073.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:892

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\629e370b1d3ba9bf6724d7054bc89073.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1756

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:936

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:1064

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\WINDOWS\mssecsvr.exe

Filesize
2.2MB

MD5
8632b048ae93552c09c0ca80ed6230a5

SHA1
cbdd06886b6ffbccc620443f875ecd07db7c8909

SHA256
478e9dca209e33943a29a160f5959c86469b08766600f5183df106c2ea0713c0

SHA512
a3255f1e32c78a93e13111324d1a3e31396a9a42ea7ccf4377086c68216267601781b9e717a6e05540451cb4bd67a037a5770ea67bfaa2ebcfe02a1e8775d5b2

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
8632b048ae93552c09c0ca80ed6230a5

SHA1
cbdd06886b6ffbccc620443f875ecd07db7c8909

SHA256
478e9dca209e33943a29a160f5959c86469b08766600f5183df106c2ea0713c0

SHA512
a3255f1e32c78a93e13111324d1a3e31396a9a42ea7ccf4377086c68216267601781b9e717a6e05540451cb4bd67a037a5770ea67bfaa2ebcfe02a1e8775d5b2

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
8632b048ae93552c09c0ca80ed6230a5

SHA1
cbdd06886b6ffbccc620443f875ecd07db7c8909

SHA256
478e9dca209e33943a29a160f5959c86469b08766600f5183df106c2ea0713c0

SHA512
a3255f1e32c78a93e13111324d1a3e31396a9a42ea7ccf4377086c68216267601781b9e717a6e05540451cb4bd67a037a5770ea67bfaa2ebcfe02a1e8775d5b2

Download Submit
memory/936-56-0x0000000000000000-mapping.dmp

Download
memory/1756-54-0x0000000000000000-mapping.dmp

Download
memory/1756-55-0x0000000075A11000-0x0000000075A13000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads