wannacry | 53a43ff0c9043a537995558a6ad94dd9a41668c1f5cd4d195db7fbf2b066aa09

General

Target

a6be621dee55c1f80332d68ad4853cd3_JaffaCakes118.dll
Size

5.0MB
MD5

a6be621dee55c1f80332d68ad4853cd3
SHA1

3681f967a87ab6c3b07dcd9aacf9da30adeb8272
SHA256

53a43ff0c9043a537995558a6ad94dd9a41668c1f5cd4d195db7fbf2b066aa09
SHA512

1cf81fcd97c7ada68cd596d22a66a28975ba3c7a852e731c22cc0640c5d884a773143acb74ebbddadb1d856f9580665c605f7c68ca6d9faaa794268356acb444
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6Zdw:+DqPoBhz1aRxcSUDk36Zd

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3107) 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

2216 mssecsvc.exe
2768 mssecsvc.exe
2636 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
2216	mssecsvc.exe
2768	mssecsvc.exe
2636	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
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 (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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0063000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-c8-c6-15-98-02\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-c8-c6-15-98-02\WpadDecision = "0"	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\Wpad\{78B4C484-519F-49DE-868B-A495AC5EA28C}\WpadDecisionTime = 50228ff6dbbdda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{78B4C484-519F-49DE-868B-A495AC5EA28C}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-c8-c6-15-98-02	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{78B4C484-519F-49DE-868B-A495AC5EA28C}\fe-c8-c6-15-98-02	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\ProxyEnable = "0"	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	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{78B4C484-519F-49DE-868B-A495AC5EA28C}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-c8-c6-15-98-02\WpadDecisionTime = 50228ff6dbbdda01	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
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\Wpad\{78B4C484-519F-49DE-868B-A495AC5EA28C}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{78B4C484-519F-49DE-868B-A495AC5EA28C}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1752 wrote to memory of 2076	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 2076	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 2076	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 2076	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 2076	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 2076	1752	rundll32.exe	rundll32.exe
PID 1752 wrote to memory of 2076	1752	rundll32.exe	rundll32.exe
PID 2076 wrote to memory of 2216	2076	rundll32.exe	mssecsvc.exe
PID 2076 wrote to memory of 2216	2076	rundll32.exe	mssecsvc.exe
PID 2076 wrote to memory of 2216	2076	rundll32.exe	mssecsvc.exe
PID 2076 wrote to memory of 2216	2076	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a6be621dee55c1f80332d68ad4853cd3_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1752

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a6be621dee55c1f80332d68ad4853cd3_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2076

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2216

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2636

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:2768

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
ebf75c92f4213abfde5ec3683d1895cd

SHA1
69bc8bcfbddcccc9f93439774a37ab39cdad68cd

SHA256
de1739f2ce3460e346b2a83534fda7b2e8df38cf29a72c9af656f4a61fb096a2

SHA512
70abd0523a2c83795feeb0199f3f4a437a5a79466e621f254f8a729afe7c919f650727d48185c709c37901f2648f1a04086a87c9e344d684ffacbd75d4204fed

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
bfd12eec647e9b9dc582825cc81fe572

SHA1
27a230982c4ef22505a0cfa643f1befd9b88b8a7

SHA256
123bc427265409ec28a20d5b78a51ca72b955f0c7950f0f0e77ca86466f5ba34

SHA512
a1697efce3bd39a4ec02c9719c2db3c2dfb9eacac2fd0c1752c63d2baa6013cd80801ec7f7ea90d778fa20bbdf78bbaefb8d8d4490ee57e351b06d23e4fdf652

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads