wannacry | c4463bf99e141e8b7ef222d1b9144c0ee509eba02804df596f4a1a13efc289d4

General

Target

be5fc60292e3034da9dc33bfb3accaa2_JaffaCakes118.dll
Size

5.0MB
MD5

be5fc60292e3034da9dc33bfb3accaa2
SHA1

c4963e9abe5380ac750198f5c866875721a1a59c
SHA256

c4463bf99e141e8b7ef222d1b9144c0ee509eba02804df596f4a1a13efc289d4
SHA512

e72e3526e7a31e693ac428c12b13f7ab7fbfd1a83896f4cd538877727458bed10065f21a1a1cf37434bc60fc9b6ff18bc2c34356cf97d7054d8a074cb7bbf1bb
SSDEEP

49152:SnAQqMSPbcBVQej/ORdivBJM0H9PAMEcaEau3R8yAH1plAH:+DqPoBhzCdKBWa9P593R8yAVp2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3197) 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

pid	Process
2400	mssecsvc.exe
2100	mssecsvc.exe
2808	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

Drops file in System32 directory 1 IoCs

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

description	ioc	Process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A503714F-A2C7-48D6-A874-7096CE79F2FC}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ba-ad-2a-3a-8b-42\WpadDecisionReason = "1"	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\UNCAsIntranet = "0"	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 (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\{A503714F-A2C7-48D6-A874-7096CE79F2FC}\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ba-ad-2a-3a-8b-42\WpadDecisionTime = 706476f70df6da01	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
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\{A503714F-A2C7-48D6-A874-7096CE79F2FC}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A503714F-A2C7-48D6-A874-7096CE79F2FC}\WpadDecisionTime = 706476f70df6da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ba-ad-2a-3a-8b-42	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A503714F-A2C7-48D6-A874-7096CE79F2FC}\ba-ad-2a-3a-8b-42	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ba-ad-2a-3a-8b-42\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
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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ea000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A503714F-A2C7-48D6-A874-7096CE79F2FC}\WpadNetworkName = "Network 3"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 1448	2360	rundll32.exe	30
PID 2360 wrote to memory of 1448	2360	rundll32.exe	30
PID 2360 wrote to memory of 1448	2360	rundll32.exe	30
PID 2360 wrote to memory of 1448	2360	rundll32.exe	30
PID 2360 wrote to memory of 1448	2360	rundll32.exe	30
PID 2360 wrote to memory of 1448	2360	rundll32.exe	30
PID 2360 wrote to memory of 1448	2360	rundll32.exe	30
PID 1448 wrote to memory of 2400	1448	rundll32.exe	31
PID 1448 wrote to memory of 2400	1448	rundll32.exe	31
PID 1448 wrote to memory of 2400	1448	rundll32.exe	31
PID 1448 wrote to memory of 2400	1448	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\be5fc60292e3034da9dc33bfb3accaa2_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\be5fc60292e3034da9dc33bfb3accaa2_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1448
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2400
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2808

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2100

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
599ca6f0fc7b1f573e334b5d859bd60b

SHA1
8102c25596ab4dad51a4d00341d83709e294a7c7

SHA256
c0e6b5340b5de6cb270c26a4cbdb85c4f10bd348bad277f66c3e3a1150e0b8be

SHA512
c750bd179d769eb6561f07f0a2a4b6252b8c5e3df62cd871a1dde960ce4f4dfaa00403378ba63c36d89112ad8212fba2957cfd605517d64cac84e75c962d97e3

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
b17dcf4a59c4d513d9eda37d308b83e7

SHA1
09c9bfeeb7a6967a4043ef5129fe81c81274829c

SHA256
5bf30361b8690f8faea216763e741b8d5f56b0e634a85a2ed090697ad4c4568d

SHA512
aefa6a8fc00054d749420d3e61b07eb21b6b4e1d4bb9fd1610eb340814137e6a331c334afbeb12b2c9dff1d31c4f4a427aeefccc7cc7930083fccadc05b66434

Download Submit

Analysis

Sharing