wannacry | ad4883a754743db81809cc13dd42a5e0e4e3732ef0f9f250aa8f8db84ad3adec

General

Target

9d9585c4a7fcdaa359f5c9524ed79e10_JaffaCakes118.dll
Size

5.0MB
MD5

9d9585c4a7fcdaa359f5c9524ed79e10
SHA1

c924f26d718df11d193555a7a148f61ef49b4acf
SHA256

ad4883a754743db81809cc13dd42a5e0e4e3732ef0f9f250aa8f8db84ad3adec
SHA512

59ad376962bc5d640b71e4f0cde71ac0dbc018306ffd752262c50d69de3da9e6ae225e55186aa1078836eebedc3fc171a991223d2ab65caf873e8f2a324b87ca
SSDEEP

49152:SnAQqMSPbcBVHS6SAAjEau3R8yAH1plAH:+DqPoBxS6SA53R8yAVp2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3256) 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

832 mssecsvc.exe
2944 mssecsvc.exe
2568 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
832	mssecsvc.exe
2944	mssecsvc.exe
2568	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 (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\{7B274256-EC98-4E65-A3E0-0501880B15E6}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7B274256-EC98-4E65-A3E0-0501880B15E6}\WpadDecisionTime = 60a9f307dbbbda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7B274256-EC98-4E65-A3E0-0501880B15E6}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7B274256-EC98-4E65-A3E0-0501880B15E6}\WpadNetworkName = "Network 3"	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
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-7f-59-f5-bc-6f\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-7f-59-f5-bc-6f	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7B274256-EC98-4E65-A3E0-0501880B15E6}\52-7f-59-f5-bc-6f	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-7f-59-f5-bc-6f\WpadDecisionTime = 60a9f307dbbbda01	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	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ef000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\{7B274256-EC98-4E65-A3E0-0501880B15E6}\WpadDecisionReason = "1"	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 (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\Connections	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\Wpad\52-7f-59-f5-bc-6f\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3028 wrote to memory of 2320	3028	rundll32.exe	rundll32.exe
PID 3028 wrote to memory of 2320	3028	rundll32.exe	rundll32.exe
PID 3028 wrote to memory of 2320	3028	rundll32.exe	rundll32.exe
PID 3028 wrote to memory of 2320	3028	rundll32.exe	rundll32.exe
PID 3028 wrote to memory of 2320	3028	rundll32.exe	rundll32.exe
PID 3028 wrote to memory of 2320	3028	rundll32.exe	rundll32.exe
PID 3028 wrote to memory of 2320	3028	rundll32.exe	rundll32.exe
PID 2320 wrote to memory of 832	2320	rundll32.exe	mssecsvc.exe
PID 2320 wrote to memory of 832	2320	rundll32.exe	mssecsvc.exe
PID 2320 wrote to memory of 832	2320	rundll32.exe	mssecsvc.exe
PID 2320 wrote to memory of 832	2320	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d9585c4a7fcdaa359f5c9524ed79e10_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3028

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d9585c4a7fcdaa359f5c9524ed79e10_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2320

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:832

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2568

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:2944

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
2cfc8a3adc98b3395b7abc64d0cb3d41

SHA1
3d3721efdc7c8df3639c8b2af0a8204dd854dee0

SHA256
3052e5388792de337a2102b79fe31254007e005a63e7bf1179a5296bca9d5c44

SHA512
df9c6d68ba515ecbfb63a827080de716f99335f75791b0ae3150633865c466501f34c6fbd1819cc7fb9aabc6869eb35e5ccc5cd365e4e2d1fa41c9b092845724

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
3894c0959aef497a8ee3b46fa80ee66e

SHA1
c2ce2523300b1516da89012ef079b8e8cb922f39

SHA256
ba10e3e9f7a449bd6cf4089b9724007fc5d83c7a6516a7bf879e9a4a25564f93

SHA512
7816f5d54febcbfec4de4e4ecab8ef01288a6ccf3fe1d0a118118e7d30b12cbbd1dd80b5703531ebbd3716767866301050439e937a5321782d131fd243d342a5

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads