wannacry | 9dff446dd66f69115dda623bcb49e0a1b9783e3de4e57ab4c48d321ff316434c

General

Target

eabf61ab167036bf6e32f50b1d10a51d.dll
Size

5.0MB
MD5

eabf61ab167036bf6e32f50b1d10a51d
SHA1

add487c25487367c3a403226c5551660ae8e920a
SHA256

9dff446dd66f69115dda623bcb49e0a1b9783e3de4e57ab4c48d321ff316434c
SHA512

fea2744c57963cbd84646c0446d2321e6d76c85c6d5c055c1f7ed1faf656027fa1f6ac0ae8f0b02580d31ab79103cabd86f30ea753a2e58039f85384e4401497

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1273) 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:

mssecsvc.exemssecsvc.exe

pid process

784 mssecsvc.exe
1364 mssecsvc.exe

pid	process
784	mssecsvc.exe
1364	mssecsvc.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
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\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
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9d-f8-8b-a5-59\WpadDecisionTime = 00250e0cf59bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9d-f8-8b-a5-59\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7985A0AF-B22B-40D1-8CE4-A8185C83F455}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7985A0AF-B22B-40D1-8CE4-A8185C83F455}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9d-f8-8b-a5-59	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7985A0AF-B22B-40D1-8CE4-A8185C83F455}\WpadDecisionTime = 00250e0cf59bd801	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7985A0AF-B22B-40D1-8CE4-A8185C83F455}\aa-9d-f8-8b-a5-59	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9d-f8-8b-a5-59\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	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\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7985A0AF-B22B-40D1-8CE4-A8185C83F455}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7985A0AF-B22B-40D1-8CE4-A8185C83F455}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1124 wrote to memory of 540	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 540	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 540	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 540	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 540	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 540	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 540	1124	rundll32.exe	rundll32.exe
PID 540 wrote to memory of 784	540	rundll32.exe	mssecsvc.exe
PID 540 wrote to memory of 784	540	rundll32.exe	mssecsvc.exe
PID 540 wrote to memory of 784	540	rundll32.exe	mssecsvc.exe
PID 540 wrote to memory of 784	540	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\eabf61ab167036bf6e32f50b1d10a51d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1124

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\eabf61ab167036bf6e32f50b1d10a51d.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:540

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:784

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:1364

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\mssecsvc.exe

Filesize
2.2MB

MD5
453981758a472ec2417fbd6fdaeca54e

SHA1
b2d041ecec85c236cb863cc02ed159b437873d40

SHA256
3e7a41ad9487f6e3f11c1cc194b9914a9013a019ccb639406f7c02fd1b19e9ee

SHA512
daa7ae15c04d0c376976dd9f36a0faa5dca66ece5e93a9a463aff02a03bb57ad6aa2b88aced9824d3987cb03bf357012c3fbb2e6decfad0bd997ebed2e8b88b7

Download Submit
C:\Windows\mssecsvc.exe

Filesize
2.2MB

MD5
453981758a472ec2417fbd6fdaeca54e

SHA1
b2d041ecec85c236cb863cc02ed159b437873d40

SHA256
3e7a41ad9487f6e3f11c1cc194b9914a9013a019ccb639406f7c02fd1b19e9ee

SHA512
daa7ae15c04d0c376976dd9f36a0faa5dca66ece5e93a9a463aff02a03bb57ad6aa2b88aced9824d3987cb03bf357012c3fbb2e6decfad0bd997ebed2e8b88b7

Download Submit
C:\Windows\mssecsvc.exe

Filesize
2.2MB

MD5
453981758a472ec2417fbd6fdaeca54e

SHA1
b2d041ecec85c236cb863cc02ed159b437873d40

SHA256
3e7a41ad9487f6e3f11c1cc194b9914a9013a019ccb639406f7c02fd1b19e9ee

SHA512
daa7ae15c04d0c376976dd9f36a0faa5dca66ece5e93a9a463aff02a03bb57ad6aa2b88aced9824d3987cb03bf357012c3fbb2e6decfad0bd997ebed2e8b88b7

Download Submit
memory/540-54-0x0000000000000000-mapping.dmp

Download
memory/540-55-0x0000000075871000-0x0000000075873000-memory.dmp

Filesize
8KB

Download
memory/784-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads