wannacry | 27b656167ee5504bcd296075509bcbdb09b1aba52aec630ec84d23b0a2dbd90e

General

Target

118eedee15f92a246867fed1e15bfda1_JaffaCakes118.dll
Size

5.0MB
MD5

118eedee15f92a246867fed1e15bfda1
SHA1

5ff90cf70d36d8be902e23bba87e9df6ccb3dad7
SHA256

27b656167ee5504bcd296075509bcbdb09b1aba52aec630ec84d23b0a2dbd90e
SHA512

7259fcad1c439c2b901203d1f35ed2569dfa6f0018b33c6710343cf731c0a7c09a6aa7a20b37fd57b393c536a3d399da37bc068a1a646f17350c68d959040c8b
SSDEEP

98304:TDqPoVl71kRYhEpykcTX+CXlvwr/cA3oYDRaMYwPQYYWr3oSEsWfhP:TDqP7

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3060) 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

2968 mssecsvc.exe
2152 mssecsvc.exe
2580 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
2968	mssecsvc.exe
2152	mssecsvc.exe
2580	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0047000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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
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
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\{869C47FF-AE31-46E8-BE02-A26D98385553}	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 (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\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadDecisionReason = "1"	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
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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadDecisionTime = b0a5310fe09dda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadDecision = "0"	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-49-19-7d-c6-ed	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-49-19-7d-c6-ed\WpadDecisionTime = b0a5310fe09dda01	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\{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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2888 wrote to memory of 2952	2888	rundll32.exe	rundll32.exe
PID 2888 wrote to memory of 2952	2888	rundll32.exe	rundll32.exe
PID 2888 wrote to memory of 2952	2888	rundll32.exe	rundll32.exe
PID 2888 wrote to memory of 2952	2888	rundll32.exe	rundll32.exe
PID 2888 wrote to memory of 2952	2888	rundll32.exe	rundll32.exe
PID 2888 wrote to memory of 2952	2888	rundll32.exe	rundll32.exe
PID 2888 wrote to memory of 2952	2888	rundll32.exe	rundll32.exe
PID 2952 wrote to memory of 2968	2952	rundll32.exe	mssecsvc.exe
PID 2952 wrote to memory of 2968	2952	rundll32.exe	mssecsvc.exe
PID 2952 wrote to memory of 2968	2952	rundll32.exe	mssecsvc.exe
PID 2952 wrote to memory of 2968	2952	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\118eedee15f92a246867fed1e15bfda1_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2888

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\118eedee15f92a246867fed1e15bfda1_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2952

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2968

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2580

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
661fdd674e5b970bd6c16b79157dca7b

SHA1
4845c77b316f47a4a4451f49af0557bfcb9414c7

SHA256
f7bc720a877190d678b5aed7c5f17c6a08ee44d3c7b81f8bf951dc309ed242d0

SHA512
f6e2f9ca3bebf7913d20431fec77f557c1a23950b9001496fa99fd6d1a207cabbca2f0ab78d05c6c8ff5d2b35c49287edc01c797b4e557b0e45cecea32ea2083

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

MD5
f7a6deedaa31614b07e5407e02404a77

SHA1
39396676c7c3b17737d3d54104e391c9b3980469

SHA256
bc063fe618ebd42fd8750193a963f9296301f34d979dc0fd89624caf7bb5c3d0

SHA512
93edd5f22678c76271f24d62aa3d7623294279f74d905a18c470c28ad6fe6262080f852daf8f6d328d9e2008688a346b738022429aae06cacbb9c5de46ab157a

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads