wannacry | 4480e10e9512610c2f107b6ec9b2eca9942cf2bc65548ae35d6b015573359093

General

Target

6fafd1f7b3289ede91714a119c02a386_JaffaCakes118.dll
Size

5.0MB
MD5

6fafd1f7b3289ede91714a119c02a386
SHA1

61adc5243ac6caa38c7f440128dbc79cff910124
SHA256

4480e10e9512610c2f107b6ec9b2eca9942cf2bc65548ae35d6b015573359093
SHA512

f21dc56ee45775fd0de36cfd668a8d70093106834c182b260479941f34ca944ddd8477f85fe8f4f8f740d4fb2960e884544c49d498843fd539d40a22bc039616
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp28:TDqPe1Cxcxk3ZAEUadzR8yc48

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3192) 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

1684 mssecsvc.exe
1612 mssecsvc.exe
1956 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
1684	mssecsvc.exe
1612	mssecsvc.exe
1956	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	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\{393578DA-4BD2-4131-B9A6-26075EF3E721}\WpadDecisionTime = 3091957c15aeda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-1c-77-23-85-b9	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\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\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0089000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}\WpadNetworkName = "Network 3"	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}\be-1c-77-23-85-b9	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-1c-77-23-85-b9\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-1c-77-23-85-b9\WpadDecision = "0"	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 (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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{393578DA-4BD2-4131-B9A6-26075EF3E721}\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-1c-77-23-85-b9\WpadDecisionTime = 3091957c15aeda01	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 2228 wrote to memory of 1776	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 1776	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 1776	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 1776	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 1776	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 1776	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 1776	2228	rundll32.exe	rundll32.exe
PID 1776 wrote to memory of 1684	1776	rundll32.exe	mssecsvc.exe
PID 1776 wrote to memory of 1684	1776	rundll32.exe	mssecsvc.exe
PID 1776 wrote to memory of 1684	1776	rundll32.exe	mssecsvc.exe
PID 1776 wrote to memory of 1684	1776	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6fafd1f7b3289ede91714a119c02a386_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2228

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6fafd1f7b3289ede91714a119c02a386_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1776

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1684

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1956

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:1612

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
136e5884c73567c49695336e3ceb544d

SHA1
f0fc9616a21407a8de6bb97de0674017900b7852

SHA256
08637c6f888ec702cab6e4b64c57dc8c56106984ae78df70c22847c9541f05b6

SHA512
00400859e00a6d86930982bf89f2b5243865c005712a718483e7cfda7dfb8cf0ffdc0366172542517143a8ee26f6e7972d52e90d5a81797f6914dc82a1b0472f

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

MD5
17b602dc41383bd5798a147865141803

SHA1
eec93c6381bb53ad42129b303c2ab28003ec0df4

SHA256
6420258d2431ef363eff16c6eff8557263c0e11a3a80f416655174bd51ab27b5

SHA512
947c1e0e98dd1ccc8995543e1178787b09feb1e13ff067e6caa60327224e6674c778bec0049599106724a14e9d3ae25a774a29e1823ccf81285c7191400f0873

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads