wannacry | ec29f4db6e43c8bfad91f4d2910c6db42b975d33f7a51c69ea9e0dc9d400584f

General

Target
4c35693cadb792e90bdddc8380b842c5.dll
Size 5.0MB
Sample220720-brs96aafbj
SHA256 ec29f4db6e43c8bfad91f4d2910c6db42b975d33f7a51c69ea9e0dc9d400584f
MD5 4c35693cadb792e90bdddc8380b842c5
SHA1 746a147d80ad18a14675cd3ac6ab36732b005993
SHA512 74ae721343082477fc09ef865d595c2150b085bea7e935e52587946da0ac0f54296a85cacdd37c9b70518668ffaf55012e8f21feade02a433363217d92544630
MD5 SHA1 SHA512

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3079) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046

Executes dropped EXE 3 IoCs

pid	Process
5000	mssecsvc.exe
2192	mssecsvc.exe
1516	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 Scanning
T1046

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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3972	1516	WerFault.exe	79
2232	1516	WerFault.exe	79

Modifies data under HKEY_USERS 5 IoCs

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

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 4988	4952	rundll32.exe	76
PID 4952 wrote to memory of 4988	4952	rundll32.exe	76
PID 4952 wrote to memory of 4988	4952	rundll32.exe	76
PID 4988 wrote to memory of 5000	4988	rundll32.exe	77
PID 4988 wrote to memory of 5000	4988	rundll32.exe	77
PID 4988 wrote to memory of 5000	4988	rundll32.exe	77
PID 5000 wrote to memory of 1516	5000	mssecsvc.exe	79
PID 5000 wrote to memory of 1516	5000	mssecsvc.exe	79
PID 5000 wrote to memory of 1516	5000	mssecsvc.exe	79

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c35693cadb792e90bdddc8380b842c5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c35693cadb792e90bdddc8380b842c5.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4988
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of WriteProcessMemory
    PID:5000
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1516
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 224
        5⤵
        Program crash
        
        PID:3972
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 244
        5⤵
        Program crash
        
        PID:2232

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 1516 -ip 1516
1⤵
PID:4156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1516 -ip 1516
1⤵
PID:4480

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

mssecsvc.exe

Path C:\WINDOWS\mssecsvc.exe
Size 3.6MB
SHA256 52f6872620f955c3ba83cb5b7662409317811a32890f1545c6aeeea851fd38a5
MD5 4e9e7d540c73d79a641299c02154a342
SHA1 259a5feb4e5032d32474042aad4e3444da12df1d
SHA512 770943a07fb2889071c3f2ae82d2db1340c871c2e95beb4fd8d64fec14451ce98c3ec7cfbc2097f6958f345f827b2de597742183530d32621793daf0c7c0c6c9
SSDEEP 49152:2nSVl1Vl1hVOYRl1Fi4ioU5l1FkZ0p3H/n66X1is:yYHUX6i1x
MD5 SHA1 SHA512 SSDEEP

Submit Download

tasksche.exe

Path C:\WINDOWS\tasksche.exe
Size 3.4MB
SHA256 e1e1d0a7b950fee4294a3e8b8c944e215d9c9cd1aa718cc87d48c2bc2f71d149
MD5 05b62993be8f2411988da09e828ea3a9
SHA1 a211ce025d3f266f8e60dbb5985d6b6bc6fbd795
SHA512 0fd8b0d191e1ef44da171bf261532394a87d5c766c49979f5061bd68d42452e741f9c6ae3dad6ff301db1c5069e533e63f6a976398c782da79b194f8da5e5559
SSDEEP 49152:VVl1Vl1hVOYRl1Fi4ioU5l1FkZ0p3H/n66X1iI:3HUX6i19
MD5 SHA1 SHA512 SSDEEP

Submit Download

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 52f6872620f955c3ba83cb5b7662409317811a32890f1545c6aeeea851fd38a5
MD5 4e9e7d540c73d79a641299c02154a342
SHA1 259a5feb4e5032d32474042aad4e3444da12df1d
SHA512 770943a07fb2889071c3f2ae82d2db1340c871c2e95beb4fd8d64fec14451ce98c3ec7cfbc2097f6958f345f827b2de597742183530d32621793daf0c7c0c6c9
SSDEEP 49152:2nSVl1Vl1hVOYRl1Fi4ioU5l1FkZ0p3H/n66X1is:yYHUX6i1x
MD5 SHA1 SHA512 SSDEEP

Submit Download

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 52f6872620f955c3ba83cb5b7662409317811a32890f1545c6aeeea851fd38a5
MD5 4e9e7d540c73d79a641299c02154a342
SHA1 259a5feb4e5032d32474042aad4e3444da12df1d
SHA512 770943a07fb2889071c3f2ae82d2db1340c871c2e95beb4fd8d64fec14451ce98c3ec7cfbc2097f6958f345f827b2de597742183530d32621793daf0c7c0c6c9
SSDEEP 49152:2nSVl1Vl1hVOYRl1Fi4ioU5l1FkZ0p3H/n66X1is:yYHUX6i1x
MD5 SHA1 SHA512 SSDEEP

Submit Download

tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 e1e1d0a7b950fee4294a3e8b8c944e215d9c9cd1aa718cc87d48c2bc2f71d149
MD5 05b62993be8f2411988da09e828ea3a9
SHA1 a211ce025d3f266f8e60dbb5985d6b6bc6fbd795
SHA512 0fd8b0d191e1ef44da171bf261532394a87d5c766c49979f5061bd68d42452e741f9c6ae3dad6ff301db1c5069e533e63f6a976398c782da79b194f8da5e5559
SSDEEP 49152:VVl1Vl1hVOYRl1Fi4ioU5l1FkZ0p3H/n66X1iI:3HUX6i19
MD5 SHA1 SHA512 SSDEEP

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads