wannacry | 4cb2b1351a6395b7dbd75b77bf10ccb14e276f06d5eeab182a7893e1e0ca4a4b

General

Target

4cb2b1351a6395b7dbd75b77bf10ccb14e276f06d5eeab182a7893e1e0ca4a4b.dll
Size

5.0MB
MD5

4e9c831f3f105fc90d60cf5951134b51
SHA1

bd0f75516322c51564a4f7f265e75bf295d34930
SHA256

4cb2b1351a6395b7dbd75b77bf10ccb14e276f06d5eeab182a7893e1e0ca4a4b
SHA512

f8c7a0d149a9a72f656b0999f83bc141f1f26281c14837840fe372a63a0ad3915e3071d58263a85481ddef2409635429c6354cf3fede9124215527b83b6f7d3b

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1292) 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
1780 mssecsvr.exe

pid	process
2000	mssecsvr.exe
1780	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\{EF8CB47B-A664-49A4-981A-1FBA99B1249C}\WpadDecisionTime = 3003b9bdbd95d801	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-98-6d-4e-6a-3d\WpadDecisionTime = 3003b9bdbd95d801	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\Connections	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\ZoneMap\UNCAsIntranet = "0"	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\History\CachePrefix = "Visited:"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-98-6d-4e-6a-3d\WpadDecision = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f008c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EF8CB47B-A664-49A4-981A-1FBA99B1249C}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EF8CB47B-A664-49A4-981A-1FBA99B1249C}\WpadDecision = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EF8CB47B-A664-49A4-981A-1FBA99B1249C}\WpadNetworkName = "Network 3"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-98-6d-4e-6a-3d	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\Wpad	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EF8CB47B-A664-49A4-981A-1FBA99B1249C}	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EF8CB47B-A664-49A4-981A-1FBA99B1249C}\7a-98-6d-4e-6a-3d	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-98-6d-4e-6a-3d\WpadDecisionReason = "1"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1984 wrote to memory of 1468	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1468	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1468	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1468	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1468	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1468	1984	rundll32.exe	rundll32.exe
PID 1984 wrote to memory of 1468	1984	rundll32.exe	rundll32.exe
PID 1468 wrote to memory of 2000	1468	rundll32.exe	mssecsvr.exe
PID 1468 wrote to memory of 2000	1468	rundll32.exe	mssecsvr.exe
PID 1468 wrote to memory of 2000	1468	rundll32.exe	mssecsvr.exe
PID 1468 wrote to memory of 2000	1468	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4cb2b1351a6395b7dbd75b77bf10ccb14e276f06d5eeab182a7893e1e0ca4a4b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1984

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4cb2b1351a6395b7dbd75b77bf10ccb14e276f06d5eeab182a7893e1e0ca4a4b.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1468

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:1780

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
7ba8b6b276f78f9b36770ea4dda0a3e4

SHA1
1123e4190c50c9d87f6179fa3758c23b94e76d99

SHA256
582f6fa1c8a93e5991037196ff19b49b587bdc2bfd89a85c3f033bb170096f1b

SHA512
c1badee12b502d0984917e2f39a6c1ed62a081dc2689ae0ebcff1676fa0ee51dfb13a8172aff578d7352f0ef0689372578046b1903e7dc32fe59a55bfccd2937

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

MD5
7ba8b6b276f78f9b36770ea4dda0a3e4

SHA1
1123e4190c50c9d87f6179fa3758c23b94e76d99

SHA256
582f6fa1c8a93e5991037196ff19b49b587bdc2bfd89a85c3f033bb170096f1b

SHA512
c1badee12b502d0984917e2f39a6c1ed62a081dc2689ae0ebcff1676fa0ee51dfb13a8172aff578d7352f0ef0689372578046b1903e7dc32fe59a55bfccd2937

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

MD5
7ba8b6b276f78f9b36770ea4dda0a3e4

SHA1
1123e4190c50c9d87f6179fa3758c23b94e76d99

SHA256
582f6fa1c8a93e5991037196ff19b49b587bdc2bfd89a85c3f033bb170096f1b

SHA512
c1badee12b502d0984917e2f39a6c1ed62a081dc2689ae0ebcff1676fa0ee51dfb13a8172aff578d7352f0ef0689372578046b1903e7dc32fe59a55bfccd2937

Download Submit
memory/1468-54-0x0000000000000000-mapping.dmp

Download
memory/1468-55-0x00000000752D1000-0x00000000752D3000-memory.dmp

Filesize
8KB

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

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads