wannacry | eea8b675458d178fe1e1ef2cabe5243bd12e1d54f35c69d01d544d467d0a4c56

General

Target

722b31954ed4c69acd0fbcf17da21498.dll
Size

5.0MB
MD5

722b31954ed4c69acd0fbcf17da21498
SHA1

8a11f9b56728b8210689cc7c37d81668f9db3b03
SHA256

eea8b675458d178fe1e1ef2cabe5243bd12e1d54f35c69d01d544d467d0a4c56
SHA512

70bd9370a0a0242cbe32bdb4b5ef9efc7d0efda6951bbbd88e5c020f79fceb082a1bf6b50d881b57cba46fc916f9acf8c216d34ddda9ebb5cf6a4c326efa2a47

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (995) 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 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1148 mssecsvc.exe
1648 mssecsvc.exe
392 tasksche.exe

pid	process
1148	mssecsvc.exe
1648	mssecsvc.exe
392	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecisionTime = c0c25009f89bd801	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90\WpadDecisionTime = c0c25009f89bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00b9000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DDD376C1-A934-4862-A477-420673A0EB55}\4a-be-6e-b9-73-90	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-be-6e-b9-73-90\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 1816 wrote to memory of 1148	1816	rundll32.exe	mssecsvc.exe
PID 1816 wrote to memory of 1148	1816	rundll32.exe	mssecsvc.exe
PID 1816 wrote to memory of 1148	1816	rundll32.exe	mssecsvc.exe
PID 1816 wrote to memory of 1148	1816	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\722b31954ed4c69acd0fbcf17da21498.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:892

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\722b31954ed4c69acd0fbcf17da21498.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1816

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1148

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:392

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1648

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\mssecsvc.exe
Filesize
3.6MB

MD5
3b62838ba9ab56d3ec69bf595d76c509

SHA1
576246bfad32f418a5050b84729b25e56723e910

SHA256
4fddf8061ede2d251766e3002bb502c86a784746bea7c192c1d2314498787f04

SHA512
548c44fd33c24749f8b28d378705114b3cee77c5c2b7e3662067f494826b41f2d6eeb55547b88568fce3f90fce962ab7187d6dbfc816aaeb4fbf1c9ce7721bb0

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
3b62838ba9ab56d3ec69bf595d76c509

SHA1
576246bfad32f418a5050b84729b25e56723e910

SHA256
4fddf8061ede2d251766e3002bb502c86a784746bea7c192c1d2314498787f04

SHA512
548c44fd33c24749f8b28d378705114b3cee77c5c2b7e3662067f494826b41f2d6eeb55547b88568fce3f90fce962ab7187d6dbfc816aaeb4fbf1c9ce7721bb0

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
3b62838ba9ab56d3ec69bf595d76c509

SHA1
576246bfad32f418a5050b84729b25e56723e910

SHA256
4fddf8061ede2d251766e3002bb502c86a784746bea7c192c1d2314498787f04

SHA512
548c44fd33c24749f8b28d378705114b3cee77c5c2b7e3662067f494826b41f2d6eeb55547b88568fce3f90fce962ab7187d6dbfc816aaeb4fbf1c9ce7721bb0

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
37f931e90384f9c2b4e4faa8d7330579

SHA1
222fbd46a9ef1ee4c3f0da7b8546986f64fea55f

SHA256
a6a04c7b2efdab082346b54ebecf7a864afc99c10046395cba6939481bc40d48

SHA512
4589f746e930c31d0c1e86cb2f4a9bb13da6fb6e2b251b20dbf4f9297a2aa30884f6f6cd3a0c4d35dfc9583917e114b1d628b13485c0406029ac28100294e292

Download Submit
memory/1148-56-0x0000000000000000-mapping.dmp

Download
memory/1816-54-0x0000000000000000-mapping.dmp

Download
memory/1816-55-0x0000000075831000-0x0000000075833000-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