wannacry | f40617cc37ea7fb45f1bf5d17bc8c0f9ae45dafad84cd4102532999446be1c33

General

Target

a7e032c3c1dd18dd0e23ba33f640da6b_JaffaCakes118.dll
Size

5.0MB
MD5

a7e032c3c1dd18dd0e23ba33f640da6b
SHA1

7cbd4ed0329a173f765e485d1c9e2a5dfaa28dda
SHA256

f40617cc37ea7fb45f1bf5d17bc8c0f9ae45dafad84cd4102532999446be1c33
SHA512

05c62ee03f4200c5b2ed85d672dc33bb540d9d8c71564cbfbc802f6fd62cf2d0628457686198d56d63be035b981f058d18982a2f8cf1183204c2b9047fb647c1
SSDEEP

98304:+DqgH1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:+Dqk1Cxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3344) 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

2380 mssecsvc.exe
2152 mssecsvc.exe
2744 tasksche.exe
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

pid	process
2380	mssecsvc.exe
2152	mssecsvc.exe
2744	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\Connections	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	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadDecisionTime = 90013a560cbeda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\f6-49-19-7d-c6-ed	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-49-19-7d-c6-ed\WpadDecision = "0"	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\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0047000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-49-19-7d-c6-ed	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-49-19-7d-c6-ed\WpadDecisionTime = 90013a560cbeda01	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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-49-19-7d-c6-ed\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2884 wrote to memory of 2956	2884	rundll32.exe	rundll32.exe
PID 2884 wrote to memory of 2956	2884	rundll32.exe	rundll32.exe
PID 2884 wrote to memory of 2956	2884	rundll32.exe	rundll32.exe
PID 2884 wrote to memory of 2956	2884	rundll32.exe	rundll32.exe
PID 2884 wrote to memory of 2956	2884	rundll32.exe	rundll32.exe
PID 2884 wrote to memory of 2956	2884	rundll32.exe	rundll32.exe
PID 2884 wrote to memory of 2956	2884	rundll32.exe	rundll32.exe
PID 2956 wrote to memory of 2380	2956	rundll32.exe	mssecsvc.exe
PID 2956 wrote to memory of 2380	2956	rundll32.exe	mssecsvc.exe
PID 2956 wrote to memory of 2380	2956	rundll32.exe	mssecsvc.exe
PID 2956 wrote to memory of 2380	2956	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a7e032c3c1dd18dd0e23ba33f640da6b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2884

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a7e032c3c1dd18dd0e23ba33f640da6b_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2956

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2380

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2744

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:2152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
748b1b5dc4a8760bd2b3d6299f7f7213

SHA1
f30fe40b9d2764870363f1fb0a3f5ac6145fea5e

SHA256
4a9101ada323760207a728969fd41057c5d4c8a1bdbb625056b7ae58bfb09a3d

SHA512
2b84f7052d0297e0d2c084b7d474290bf8158c25f3b84c255fca3429df7b9bc4e86567f88d7dc63f833e4e6a14a98e2f32c1fe9d34fe46afb7f298c3912a3da7

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
d055bc95146ce16e7a9b69fce631842e

SHA1
1d71e8e250add0fc16ae0472850def80f88a9c44

SHA256
99ac395b4b69a316fe58e10f5a1d6aacc10744d0e5dcbd49024c3b3b52791d4c

SHA512
7ffaa98c2496ff95967c82c7dcbf615bdd13a806c455f1f6664c49f7df5be7c559a262c1297511144442637ad6fccb69ca3478500d74f4d2d4d7ff950f7c4d28

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads