wannacry | 7d8644271eb48be35e35f1d4c06649ba6878b4672f3d57bdea1f2ff9074bc434

General

Target
e9d1ba0ee54fcdf37cf458cd3209c9f3.dll
Size 5.0MB
Sample220720-hs782ache6
SHA256 7d8644271eb48be35e35f1d4c06649ba6878b4672f3d57bdea1f2ff9074bc434
MD5 e9d1ba0ee54fcdf37cf458cd3209c9f3
SHA1 77970fdacd24e82e89547f0d6087f866126469ca
SHA512 5dbc5b9afc7f15b5dc48650b136621aec4486f036f626fd91f786ee4375007f1a2501a954285c08763319f332657b1b883cd991ba0c678f39d4d19cbfbb3cc0c
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 (3167) 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
4128	mssecsvr.exe
2932	mssecsvr.exe
3128	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 4 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240548453	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

Modifies data under HKEY_USERS 5 IoCs

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

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 4376	1184	rundll32.exe	77
PID 1184 wrote to memory of 4376	1184	rundll32.exe	77
PID 1184 wrote to memory of 4376	1184	rundll32.exe	77
PID 4376 wrote to memory of 4128	4376	rundll32.exe	78
PID 4376 wrote to memory of 4128	4376	rundll32.exe	78
PID 4376 wrote to memory of 4128	4376	rundll32.exe	78
PID 4128 wrote to memory of 3128	4128	mssecsvr.exe	80
PID 4128 wrote to memory of 3128	4128	mssecsvr.exe	80
PID 4128 wrote to memory of 3128	4128	mssecsvr.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9d1ba0ee54fcdf37cf458cd3209c9f3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9d1ba0ee54fcdf37cf458cd3209c9f3.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4376
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of WriteProcessMemory
    PID:4128
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      Drops file in Windows directory
      PID:3128

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2932

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

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Downloads

mssecsvr.exe

Path C:\WINDOWS\mssecsvr.exe
Size 2.2MB
SHA256 458d19c4e0d41353ade3b5eb94815436ac911ad13c2fa525f753d5ef182f417f
MD5 142db3228dd9177f5fdaec26d0f0e19a
SHA1 f4f080d897a4fe16aa557a3499a7d495db62148b
SHA512 07a24755cc8e53669065d3dcfaee9ff6670670242b4e7f5ddd82f75501923372a394063f3b6a9fcd27cf67eb84a152e3b7b7c7d0327d22e2591fb47dec9053cf
SSDEEP 49152:QnpEKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnvn:QpyfBhz1aRxcSUDk36SAEdhvn
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\WINDOWS\tasksche.exe
Size 2.0MB
SHA256 ea2ad4d3bb98673b88e18eea1bf06c371c206b64246a9193b2a64ba4fe4f4900
MD5 beb8a27fc024962e045c32aa58d07d0e
SHA1 796d3613673f323135865c42272abef347add163
SHA512 e84c03f6f4399b28e0d258b743831f36c621325d9b199cbbdd6982ed51280facfc5a953a2393788bbc54efb653f95c9f75ea29c93c147c9227aff3395f788179
SSDEEP 49152:XEKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnvm:XyfBhz1aRxcSUDk36SAEdhvm
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 458d19c4e0d41353ade3b5eb94815436ac911ad13c2fa525f753d5ef182f417f
MD5 142db3228dd9177f5fdaec26d0f0e19a
SHA1 f4f080d897a4fe16aa557a3499a7d495db62148b
SHA512 07a24755cc8e53669065d3dcfaee9ff6670670242b4e7f5ddd82f75501923372a394063f3b6a9fcd27cf67eb84a152e3b7b7c7d0327d22e2591fb47dec9053cf
SSDEEP 49152:QnpEKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnvn:QpyfBhz1aRxcSUDk36SAEdhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 458d19c4e0d41353ade3b5eb94815436ac911ad13c2fa525f753d5ef182f417f
MD5 142db3228dd9177f5fdaec26d0f0e19a
SHA1 f4f080d897a4fe16aa557a3499a7d495db62148b
SHA512 07a24755cc8e53669065d3dcfaee9ff6670670242b4e7f5ddd82f75501923372a394063f3b6a9fcd27cf67eb84a152e3b7b7c7d0327d22e2591fb47dec9053cf
SSDEEP 49152:QnpEKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnvn:QpyfBhz1aRxcSUDk36SAEdhvn
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 2.0MB
SHA256 ea2ad4d3bb98673b88e18eea1bf06c371c206b64246a9193b2a64ba4fe4f4900
MD5 beb8a27fc024962e045c32aa58d07d0e
SHA1 796d3613673f323135865c42272abef347add163
SHA512 e84c03f6f4399b28e0d258b743831f36c621325d9b199cbbdd6982ed51280facfc5a953a2393788bbc54efb653f95c9f75ea29c93c147c9227aff3395f788179
SSDEEP 49152:XEKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnvm:XyfBhz1aRxcSUDk36SAEdhvm
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads