wannacry | e0c6860327b9d8ebb5ea8305b429c3ebce2f7fe989fa4072c31d384d60685278

General

Target
e0c6860327b9d8ebb5ea8305b429c3ebce2f7fe989fa4072c31d384d60685278.dll
Size 5.0MB
Sample260106-jc5nmsxphx
SHA256 e0c6860327b9d8ebb5ea8305b429c3ebce2f7fe989fa4072c31d384d60685278
MD5 20f22ed774bb74a36bb7701cf74e2be0
SHA1 3342decf899a20f3fefd2b63bb1392d036df13f7
SHA512 088b3675f09dbd969b6362de510c777e87975be1a6eb68723de4fc6299fd664c33498ec990a82764ed26ce7a29cb17e1ba07a4f5024ffbb0928ec900280aa39f
SSDEEP 49152:RnsQqMSPbcBVQej/1INRx+TSqTdXj6SAARdhnv:1/qPoBhz1aRxcSU16SAEdhv
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery wannacry ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (2929) 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
2204	mssecsvr.exe
2676	mssecsvr.exe
2144	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 Windows directory 2 IoCs

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
676	2144	WerFault.exe	84

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	mssecsvr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvr.exe

Modifies data under HKEY_USERS 12 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 1792	2380	rundll32.exe	80
PID 1792 wrote to memory of 2204	1792	rundll32.exe	81
PID 2204 wrote to memory of 2144	2204	mssecsvr.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e0c6860327b9d8ebb5ea8305b429c3ebce2f7fe989fa4072c31d384d60685278.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e0c6860327b9d8ebb5ea8305b429c3ebce2f7fe989fa4072c31d384d60685278.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1792
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2204
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2144
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 8
        5⤵
        Program crash
        
        PID:676

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2144 -ip 2144
1⤵
PID:3440

Network

MITRE ATT&CK Enterprise v16

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

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Downloads

mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 5e0e64608955077b4c1c6fd5dc65de92ae0d2ae72ffc899a586d7d2f52ae679a
MD5 cd3b304844e2d8afe7e5c9c2fb6e09a4
SHA1 2886a954fd4c3077f3e2c1a238496fd601e57a0b
SHA512 5e7f75f796ab8657d7ee171cebb2f3cdeb9bab281e9a207b2af1f902a641dbf711351b8032e04f9c7efb4f2f5dbd87bc53890b10c7ecff8ed2e1598a81e1223d
SSDEEP 49152:QnsQqMSPbcBVQej/1INRx+TSqTdXj6SAARdhnvn:Q/qPoBhz1aRxcSU16SAEdhvn
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 2.0MB
SHA256 e2e4375b56d52e679f98783bd74cd07e9ff9f2d28a00946c4eaf91dcafa01367
MD5 5d5e6425807dd66d4ecfe77a44e6654a
SHA1 cebec573667675a3a14a7decf4731cd16a1599e7
SHA512 8cba628d09b3903db76b0fa9bb02af6a9252a8b6ebd0ceb1f7c07d3c09c0697ff1e39d6bd54e294588c87e7c1573b56d6a53aa4f2bf8760a27af2d272f99432c
SSDEEP 49152:SQqMSPbcBVQej/1INRx+TSqTdXj6SAARdhnvm:tqPoBhz1aRxcSU16SAEdhvm
MD5 SHA1 SHA512 SSDEEP