wannacry | 9a7fd407910092ac9920fc621865bbdd80f3385238834eb977812c664132618b

General

Target

06a935e7f87cf2480e3fbc605c67bab7.dll
Size

5.0MB
MD5

06a935e7f87cf2480e3fbc605c67bab7
SHA1

9a4099b70455c1665c905cf86388df9e058433a5
SHA256

9a7fd407910092ac9920fc621865bbdd80f3385238834eb977812c664132618b
SHA512

5d2add3b2855d6cae3fe7dfc1a611aa13897965d06aa86e955aa32f972b4c174691627251fd7145416b3d2462088bec5932e3a6687b878b4ed3f3f7966fd8f20

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1280) 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

2000 mssecsvr.exe
852 mssecsvr.exe

pid	process
2000	mssecsvr.exe
852	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\Connections	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\{7FE2E94F-637B-4C2C-95FD-29127F6AB952}	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7FE2E94F-637B-4C2C-95FD-29127F6AB952}\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-af-97-1f-78-77	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-af-97-1f-78-77\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-af-97-1f-78-77\WpadDecision = "0"	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\Wpad	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7FE2E94F-637B-4C2C-95FD-29127F6AB952}\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7FE2E94F-637B-4C2C-95FD-29127F6AB952}\0a-af-97-1f-78-77	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 (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\{7FE2E94F-637B-4C2C-95FD-29127F6AB952}\WpadNetworkName = "Network 3"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7FE2E94F-637B-4C2C-95FD-29127F6AB952}\WpadDecisionTime = 106d00bdd69bd801	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
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\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
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00fd000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-af-97-1f-78-77\WpadDecisionTime = 106d00bdd69bd801	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1856 wrote to memory of 2012	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 2012	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 2012	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 2012	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 2012	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 2012	1856	rundll32.exe	rundll32.exe
PID 1856 wrote to memory of 2012	1856	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 2000	2012	rundll32.exe	mssecsvr.exe
PID 2012 wrote to memory of 2000	2012	rundll32.exe	mssecsvr.exe
PID 2012 wrote to memory of 2000	2012	rundll32.exe	mssecsvr.exe
PID 2012 wrote to memory of 2000	2012	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\06a935e7f87cf2480e3fbc605c67bab7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1856

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\06a935e7f87cf2480e3fbc605c67bab7.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2012

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2000

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:852

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\mssecsvr.exe
Filesize
2.2MB

MD5
5bdb4efdc9ed8e2f54c35ca11daee0ee

SHA1
cc65e844959b6c2439d5bd2d352b473d56f73097

SHA256
50dce00e3bbf1f4500aa0d8518e1ae9b826e69ba3a02d008831e5ee9f93a10ec

SHA512
b727171ab3ef6e74d2eb85d2922f428158449ebea6a1ee0cc23239c2adc0875a13bcf62f8be0eebee08b74f6546e0efe2768a8fcad4dc9163bd1f5ae38d87639

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

MD5
5bdb4efdc9ed8e2f54c35ca11daee0ee

SHA1
cc65e844959b6c2439d5bd2d352b473d56f73097

SHA256
50dce00e3bbf1f4500aa0d8518e1ae9b826e69ba3a02d008831e5ee9f93a10ec

SHA512
b727171ab3ef6e74d2eb85d2922f428158449ebea6a1ee0cc23239c2adc0875a13bcf62f8be0eebee08b74f6546e0efe2768a8fcad4dc9163bd1f5ae38d87639

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

MD5
5bdb4efdc9ed8e2f54c35ca11daee0ee

SHA1
cc65e844959b6c2439d5bd2d352b473d56f73097

SHA256
50dce00e3bbf1f4500aa0d8518e1ae9b826e69ba3a02d008831e5ee9f93a10ec

SHA512
b727171ab3ef6e74d2eb85d2922f428158449ebea6a1ee0cc23239c2adc0875a13bcf62f8be0eebee08b74f6546e0efe2768a8fcad4dc9163bd1f5ae38d87639

Download Submit
memory/2000-56-0x0000000000000000-mapping.dmp

Download
memory/2012-54-0x0000000000000000-mapping.dmp

Download
memory/2012-55-0x00000000761D1000-0x00000000761D3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads