wannacry | 8b51945ada866301cd583744f4363bbeac1b7ec84ee78c0135824a2dc57f7244

General

Target

78eae7fce7c9388446dc27ff213fe28b.dll
Size

5.0MB
MD5

78eae7fce7c9388446dc27ff213fe28b
SHA1

4e153396fa78a220c583cac81198be16648d8c32
SHA256

8b51945ada866301cd583744f4363bbeac1b7ec84ee78c0135824a2dc57f7244
SHA512

4c4ceaf90e58740e8d74d8640eb2d4e6c765257c9c10fce683f046fd8d65492533329e127800d0b94300b1fe7435a6e03024af0dbd5390e92e00dcaa4fa1168d

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1282) 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

784 mssecsvc.exe
1360 mssecsvc.exe
1392 tasksche.exe

pid	process
784	mssecsvc.exe
1360	mssecsvc.exe
1392	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7985A0AF-B22B-40D1-8CE4-A8185C83F455}\WpadDecisionReason = "1"	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\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\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 (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-9d-f8-8b-a5-59\WpadDecisionTime = 1051608bec9bd801	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7985A0AF-B22B-40D1-8CE4-A8185C83F455}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7985A0AF-B22B-40D1-8CE4-A8185C83F455}\WpadDecisionTime = 1051608bec9bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7985A0AF-B22B-40D1-8CE4-A8185C83F455}\WpadDecision = "0"	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	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\78eae7fce7c9388446dc27ff213fe28b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1124

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\78eae7fce7c9388446dc27ff213fe28b.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\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1392

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:1360

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
3.6MB

MD5
cacc6729c6beb693dedaeb6725c1f11e

SHA1
eca13474ed4342ae9425096d9af0751ba168e67c

SHA256
95c3d2057098f39398218abe9f59a684e90aefc53546cb3a3a35b40d2bc2f286

SHA512
5b767093a541668fd7b6486c7e1dbb08453f369a79a4d9aec22a25bc37e271de2c76a6a529d2ea01becd6b432d62c099776c1c54e738ee234e58441605cab447

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
cacc6729c6beb693dedaeb6725c1f11e

SHA1
eca13474ed4342ae9425096d9af0751ba168e67c

SHA256
95c3d2057098f39398218abe9f59a684e90aefc53546cb3a3a35b40d2bc2f286

SHA512
5b767093a541668fd7b6486c7e1dbb08453f369a79a4d9aec22a25bc37e271de2c76a6a529d2ea01becd6b432d62c099776c1c54e738ee234e58441605cab447

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
cacc6729c6beb693dedaeb6725c1f11e

SHA1
eca13474ed4342ae9425096d9af0751ba168e67c

SHA256
95c3d2057098f39398218abe9f59a684e90aefc53546cb3a3a35b40d2bc2f286

SHA512
5b767093a541668fd7b6486c7e1dbb08453f369a79a4d9aec22a25bc37e271de2c76a6a529d2ea01becd6b432d62c099776c1c54e738ee234e58441605cab447

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
e77b6f2af12d54a10c978b7f665c11c1

SHA1
2cf4a829a8598234f206d682b12387ef4017a09e

SHA256
edac81687e84c1433f1edcdbfb346a7b7fbb93365f98834fa6fc92821852d3e7

SHA512
81bdf8ea3f116c4921982901161274ff2e476003637fcc8b4fc47e3d29f6482ecd547d383978991ff8ff7474236595241a2dd99b975ace5dd4c8ee8125bf833f

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