wannacry | c06cc1cbe70329aee778fd8e032187dd411c1035cb0ce4f7553b7c777dce91cf

General

Target

874f580fc0d1c86aed481c4a056249f7_JaffaCakes118.dll
Size

5.0MB
MD5

874f580fc0d1c86aed481c4a056249f7
SHA1

b5f1dc1c2c78f04efd87f15a2a4e7413f7a0fb0a
SHA256

c06cc1cbe70329aee778fd8e032187dd411c1035cb0ce4f7553b7c777dce91cf
SHA512

34a96890c46bcabbfd3aa529dc2e99486d494c0d500f80d55ecd7c6766ba30a5b714de386bfb275b14ba0a4cd57bf406aa051045aa247ba014a89bc3e992698d
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhG3R8yAVp2H:+DqPe1Cxcxk3ZAE8R8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3292) 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

2976 mssecsvc.exe
2692 mssecsvc.exe
2668 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
2976	mssecsvc.exe
2692	mssecsvc.exe
2668	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\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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
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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}\WpadDecisionTime = c0ec042666b3da01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}\7a-a6-c8-69-d9-42	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-a6-c8-69-d9-42	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-a6-c8-69-d9-42\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-a6-c8-69-d9-42\WpadDecisionTime = c0ec042666b3da01	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\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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{DAE6EADF-EFB6-4A25-AAEC-AF3E3EEDE43A}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7a-a6-c8-69-d9-42\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2084 wrote to memory of 2204	2084	rundll32.exe	rundll32.exe
PID 2084 wrote to memory of 2204	2084	rundll32.exe	rundll32.exe
PID 2084 wrote to memory of 2204	2084	rundll32.exe	rundll32.exe
PID 2084 wrote to memory of 2204	2084	rundll32.exe	rundll32.exe
PID 2084 wrote to memory of 2204	2084	rundll32.exe	rundll32.exe
PID 2084 wrote to memory of 2204	2084	rundll32.exe	rundll32.exe
PID 2084 wrote to memory of 2204	2084	rundll32.exe	rundll32.exe
PID 2204 wrote to memory of 2976	2204	rundll32.exe	mssecsvc.exe
PID 2204 wrote to memory of 2976	2204	rundll32.exe	mssecsvc.exe
PID 2204 wrote to memory of 2976	2204	rundll32.exe	mssecsvc.exe
PID 2204 wrote to memory of 2976	2204	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\874f580fc0d1c86aed481c4a056249f7_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2084

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\874f580fc0d1c86aed481c4a056249f7_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2204

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2976

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2668

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:2692

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
28fcddc0a0725a61145bbedc0a138200

SHA1
a8294514d47b8b471357897918cc60395dc4e740

SHA256
5e82efa4c3841ab99fd9eaab56a05d846ebc1584fc427a49a967901464b88b9a

SHA512
ada15e9c6e421c807fb3bacb5632503855632589d749d42b89d4dcc2c55662d90abf73b05e5c11d17dd2ca5ca9825d00b5c058e76f8efab93fdf43f143476c52

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
a1b15ad577eb64fb17d70c8c1747f613

SHA1
75bffb9189c9a33ff176bb95184b75cf061d796e

SHA256
bea321d1582ea8c9505230cc3232942e2bb65c43c738f75942f868aefd59c07d

SHA512
29f04d7a2f79b0feec5916e7698e723a655ae14756a665e197f013000b2faeea0d89226c250fb8c5c39cadf9aba4501786ff788d73c6ec5379a8e61cd6d9a1d7

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads