wannacry | 9209b7bf78a3e064358626d59b608cf90e4913e3ed6cc0482b845c14ed8837db

General

Target

6671a8c1f7db3f146f562b114219a57b_JaffaCakes118.dll
Size

5.0MB
MD5

6671a8c1f7db3f146f562b114219a57b
SHA1

871c6d5567b8b0999be568f23672915836cd8c41
SHA256

9209b7bf78a3e064358626d59b608cf90e4913e3ed6cc0482b845c14ed8837db
SHA512

71236eca5b638952c2084020547596edbded3f1c4ca5e12bf0ce5cd6d56b38cf46746d0c2cc21c8c16b86770067c92e701f8973883ffa2d73dee68c17299573d
SSDEEP

49152:SnAQqMSPbcBVQCj/1INUusG5VoEYVrG2SY7Vp/XNg:+DqPoBtz1aUZLFy2V1

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3221) 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
1032	mssecsvc.exe
2800	mssecsvc.exe
2720	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

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-1b-05-84-a7-92	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-1b-05-84-a7-92\WpadDecision = "0"	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\ZoneMap\AutoDetect = "1"	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\Wpad\{E9E71E7C-1F31-456B-B5F6-6B3A05B96363}\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\76-1b-05-84-a7-92\WpadDecisionTime = 40b1522f18acda01	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
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E9E71E7C-1F31-456B-B5F6-6B3A05B96363}	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\Wpad\{E9E71E7C-1F31-456B-B5F6-6B3A05B96363}\WpadDecisionTime = 40b1522f18acda01	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E9E71E7C-1F31-456B-B5F6-6B3A05B96363}\WpadNetworkName = "Network 3"	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0038000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E9E71E7C-1F31-456B-B5F6-6B3A05B96363}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E9E71E7C-1F31-456B-B5F6-6B3A05B96363}\76-1b-05-84-a7-92	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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\Wpad\76-1b-05-84-a7-92\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1372 wrote to memory of 1916	1372	rundll32.exe	28
PID 1372 wrote to memory of 1916	1372	rundll32.exe	28
PID 1372 wrote to memory of 1916	1372	rundll32.exe	28
PID 1372 wrote to memory of 1916	1372	rundll32.exe	28
PID 1372 wrote to memory of 1916	1372	rundll32.exe	28
PID 1372 wrote to memory of 1916	1372	rundll32.exe	28
PID 1372 wrote to memory of 1916	1372	rundll32.exe	28
PID 1916 wrote to memory of 1032	1916	rundll32.exe	29
PID 1916 wrote to memory of 1032	1916	rundll32.exe	29
PID 1916 wrote to memory of 1032	1916	rundll32.exe	29
PID 1916 wrote to memory of 1032	1916	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6671a8c1f7db3f146f562b114219a57b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1372
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6671a8c1f7db3f146f562b114219a57b_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1916
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1032
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2720

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:2800

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

Replay Monitor

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
ef9f8ed3b1c339e065b76ac3593b9871

SHA1
9337bc12ce8cced55220ecc6a105ce6f9ccc84a4

SHA256
b0a0f1283bb69ea489a7a912c5b9b6d72b216ae90e5020c7a07a6b5ad3cfa715

SHA512
82891893b1d6cf2050ad7847deb2cb798f0018954ba4f1379bd7350c4a96e6ec04f659dc8fd7c6337709fa3bebf4e38949d3854dccd9a7700bb26411bab55dad

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
2b98ecc02a83f9cd1aa8e2153fd894e7

SHA1
4ebddd9090dedb303c719cdce269f3045fb10932

SHA256
18eee15a89750d98e9e3ca6ae5a4effea0d2f0ed0cef9fcd65d1731461aaa92a

SHA512
65e45b68d5979e7c7caf58b29b4708b4972fbc7723322ca4209c7d15208923ef5396bfa65511ce216609b4a4adf282ddde302429766a5b8b32f235fa1dc17b4b

Download Submit

Analysis

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