wannacry | 5013a9fc3766f0c065d44c9f6a6a8c0101811d7df4860dd50cf627a0d28ed007

General

Target

033f9150e241e7accecb60d849481871_JaffaCakes118.dll
Size

5.0MB
MD5

033f9150e241e7accecb60d849481871
SHA1

09067fd23539df1ece704a92b2dca8e32f20f7c8
SHA256

5013a9fc3766f0c065d44c9f6a6a8c0101811d7df4860dd50cf627a0d28ed007
SHA512

e08d2eb9edacbda6dfc7b2a153eaa7f38fe967876df28230e0cc88d3511d8f867f32314f49e761f402d1ff6f10fb411546ca549d855d9676992788670d512015
SSDEEP

98304:dDqPoBhz1aRxcSUZk36SAEdhvxWa9P593R8yAVp2H:dDqPe1Cxc7k3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2663) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2736 mssecsvc.exe
2436 mssecsvc.exe
2428 tasksche.exe

pid	process
2736	mssecsvc.exe
2436	mssecsvc.exe
2428	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\ZoneMap\	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4F7821FD-AC83-4AB3-B942-EBFDAC83AC41}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4F7821FD-AC83-4AB3-B942-EBFDAC83AC41}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4F7821FD-AC83-4AB3-B942-EBFDAC83AC41}\WpadDecisionTime = 40bd7807cdc4da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4F7821FD-AC83-4AB3-B942-EBFDAC83AC41}\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\0e-f3-aa-75-1f-a0	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-f3-aa-75-1f-a0\WpadDecisionTime = 40bd7807cdc4da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-f3-aa-75-1f-a0\WpadDecision = "0"	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	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4F7821FD-AC83-4AB3-B942-EBFDAC83AC41}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4F7821FD-AC83-4AB3-B942-EBFDAC83AC41}\0e-f3-aa-75-1f-a0	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-f3-aa-75-1f-a0\WpadDecisionReason = "1"	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0025000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2400 wrote to memory of 2512	2400	rundll32.exe	rundll32.exe
PID 2400 wrote to memory of 2512	2400	rundll32.exe	rundll32.exe
PID 2400 wrote to memory of 2512	2400	rundll32.exe	rundll32.exe
PID 2400 wrote to memory of 2512	2400	rundll32.exe	rundll32.exe
PID 2400 wrote to memory of 2512	2400	rundll32.exe	rundll32.exe
PID 2400 wrote to memory of 2512	2400	rundll32.exe	rundll32.exe
PID 2400 wrote to memory of 2512	2400	rundll32.exe	rundll32.exe
PID 2512 wrote to memory of 2736	2512	rundll32.exe	mssecsvc.exe
PID 2512 wrote to memory of 2736	2512	rundll32.exe	mssecsvc.exe
PID 2512 wrote to memory of 2736	2512	rundll32.exe	mssecsvc.exe
PID 2512 wrote to memory of 2736	2512	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\033f9150e241e7accecb60d849481871_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2400

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\033f9150e241e7accecb60d849481871_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2512

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2736

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2428

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:2436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
272d02d9694b6108ce0cb93be8af8f16

SHA1
6e34070d194e33e9eef908f71e6cc597d3283f5d

SHA256
79f1263d4f4c1c3fcb3698f6ebb2214999e4fc462cc15f5fe9f366c1e44d2bb8

SHA512
62a7fa4c23e00e41cde6f00270eadc4e17c2b3fc40d5b11526c2791a2aab7f42aee637901c80226d6526c9c57c31b764ccf494b1301016b0111e460c6cd5dc75

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c88722ef42a6ee08cbed91406ea5c0e5

SHA1
643960f48a68ba0778621871f37389215642c423

SHA256
efbc1542b29b798dbbeeb531bbb4b84d422843f9c66d3aff9f301ab9296d8b4c

SHA512
5381f40e08c425f96cc8fe2c3e76c4440d39773889e5d137111441805b1786df5f5b38ed60c9461243f8fcb8078d68174c066695ab9b15a96ba5f6a348950f18

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads