wannacry | 703a9f1657b0ff9513118463262311ca5c795970c6a9e29450099ab8cca929e7

General

Target

322b3db73cefcaf6a7a7f43277a572ab_JaffaCakes118.dll
Size

5.0MB
MD5

322b3db73cefcaf6a7a7f43277a572ab
SHA1

fd271d9a9ec9a5340f085d4b9790ecc915a21175
SHA256

703a9f1657b0ff9513118463262311ca5c795970c6a9e29450099ab8cca929e7
SHA512

39a2b236cc0175cf1457314edd22d7e31488209a51a8c89136a1c82b5b8d49b6e768be31dce4f18fc4406921289d46afb8561fb1f17d155b02c5125182c80bc2
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA1Eau3RhlAH:+DqPoBhz1aRxcSUDk36SAv3Rh2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3264) 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
2732	mssecsvc.exe
1968	mssecsvc.exe
2580	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\ZoneMap\	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\ProxyEnable = "0"	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
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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00a2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1D4EA2A9-7DC1-4F49-85E3-39D167DB9EC4}\WpadDecisionTime = c09095634dd2da01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-2c-2f-de-7c-6a\WpadDecisionTime = c09095634dd2da01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1D4EA2A9-7DC1-4F49-85E3-39D167DB9EC4}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1D4EA2A9-7DC1-4F49-85E3-39D167DB9EC4}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-2c-2f-de-7c-6a	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1D4EA2A9-7DC1-4F49-85E3-39D167DB9EC4}\b6-2c-2f-de-7c-6a	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1D4EA2A9-7DC1-4F49-85E3-39D167DB9EC4}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1D4EA2A9-7DC1-4F49-85E3-39D167DB9EC4}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-2c-2f-de-7c-6a\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\Wpad\b6-2c-2f-de-7c-6a\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2856	2848	rundll32.exe	30
PID 2848 wrote to memory of 2856	2848	rundll32.exe	30
PID 2848 wrote to memory of 2856	2848	rundll32.exe	30
PID 2848 wrote to memory of 2856	2848	rundll32.exe	30
PID 2848 wrote to memory of 2856	2848	rundll32.exe	30
PID 2848 wrote to memory of 2856	2848	rundll32.exe	30
PID 2848 wrote to memory of 2856	2848	rundll32.exe	30
PID 2856 wrote to memory of 2732	2856	rundll32.exe	31
PID 2856 wrote to memory of 2732	2856	rundll32.exe	31
PID 2856 wrote to memory of 2732	2856	rundll32.exe	31
PID 2856 wrote to memory of 2732	2856	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\322b3db73cefcaf6a7a7f43277a572ab_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\322b3db73cefcaf6a7a7f43277a572ab_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2856
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:2732
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2580

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:1968

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

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
0c67ab84d7f9ec7a532cd1990a0d02d5

SHA1
414e8efae3f43a1950247f25f18385bf509e69e2

SHA256
0a8de53357d49dd1dc5debc35c14cec87b4e19574c494aac49b6ad51bbdde832

SHA512
12be58060466a8e1822dd158b9bde2fe7a643d7b098960d791396e24bd7e23bfb37195c0f7a6b2b85c77ec27c4960f630aa307098148658aa027c66ac9e39be2

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
64265df8e2b86436438e2bd3a889aced

SHA1
75cd702ce0b21df1fcb9b51310e0695e14faed04

SHA256
16d82c3f8600e385179b05d5bc9a75fd3edd87da5795e0ef070d53859965f369

SHA512
e1b45dacfedb2fb8478951790c9465c72e4023989633491a3d7eb168382608d335976ee2e7e45a4df6556f34cb8172ad6fda583ba1b30a7edea017fa97c60b7e

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Analysis

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