wannacry | b31f2f762aea78f69dff795dc5a2a0a7bc102f9628308f8deaea2bf3297c076d

General

Target

765c4c601581249e11bfb2f87e06f502_JaffaCakes118.dll
Size

5.0MB
MD5

765c4c601581249e11bfb2f87e06f502
SHA1

09cf9e55abf0a83cb7524a693ea77d8f9af81e15
SHA256

b31f2f762aea78f69dff795dc5a2a0a7bc102f9628308f8deaea2bf3297c076d
SHA512

afe5e70ad02c91054d8e0158b1fd35e266d11be6f59cad7cd3c414f2c2dd1b1cc586d2f2c3d0d7a508c9fbf1a36c17a04c95f35322de728ca4785f210e5a5649
SSDEEP

98304:+DqPoBcRxcSUDk36SAEdhvxWa9P593R8yAVp2H:+DqPHxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3286) 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

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1580 mssecsvc.exe
2416 mssecsvc.exe
2572 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

pid	process
1580	mssecsvc.exe
2416	mssecsvc.exe
2572	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

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

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

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

Processes:

mssecsvc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1966DC90-6F93-469F-A026-6571FB8734E0}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-2a-5f-36-bb-1f\WpadDecisionReason = "1"	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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-2a-5f-36-bb-1f\WpadDecisionTime = a0089f4aa5afda01	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0038000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1966DC90-6F93-469F-A026-6571FB8734E0}\WpadDecisionTime = a0089f4aa5afda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1966DC90-6F93-469F-A026-6571FB8734E0}\36-2a-5f-36-bb-1f	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\Content\CachePrefix	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\{1966DC90-6F93-469F-A026-6571FB8734E0}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1966DC90-6F93-469F-A026-6571FB8734E0}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1966DC90-6F93-469F-A026-6571FB8734E0}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-2a-5f-36-bb-1f	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\36-2a-5f-36-bb-1f\WpadDecision = "0"	mssecsvc.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

taskmgr.exe

pid process

1404 taskmgr.exe
1404 taskmgr.exe
1404 taskmgr.exe
1404 taskmgr.exe
1404 taskmgr.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskmgr.exe

description pid process

Token: SeDebugPrivilege 1404 taskmgr.exe

description	pid	process
Token: SeDebugPrivilege	1404	taskmgr.exe

Suspicious use of FindShellTrayWindow 31 IoCs

Processes:

taskmgr.exe

pid	process
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe

Suspicious use of SendNotifyMessage 31 IoCs

Processes:

taskmgr.exe

pid	process
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe
1404	taskmgr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2364 wrote to memory of 2372	2364	rundll32.exe	rundll32.exe
PID 2364 wrote to memory of 2372	2364	rundll32.exe	rundll32.exe
PID 2364 wrote to memory of 2372	2364	rundll32.exe	rundll32.exe
PID 2364 wrote to memory of 2372	2364	rundll32.exe	rundll32.exe
PID 2364 wrote to memory of 2372	2364	rundll32.exe	rundll32.exe
PID 2364 wrote to memory of 2372	2364	rundll32.exe	rundll32.exe
PID 2364 wrote to memory of 2372	2364	rundll32.exe	rundll32.exe
PID 2372 wrote to memory of 1580	2372	rundll32.exe	mssecsvc.exe
PID 2372 wrote to memory of 1580	2372	rundll32.exe	mssecsvc.exe
PID 2372 wrote to memory of 1580	2372	rundll32.exe	mssecsvc.exe
PID 2372 wrote to memory of 1580	2372	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\765c4c601581249e11bfb2f87e06f502_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\765c4c601581249e11bfb2f87e06f502_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2372
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1580
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2572

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:2416

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1404

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

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
9e940166e975ff4b62df26b6ba39890e

SHA1
eb892e8385f19d19ab07e3201549e0e923549a17

SHA256
a3102fb1b8abf6b49154676ad28d989e5e008697d1cf8138c4a43a82e40178ae

SHA512
cb6b0844170ce641fcdc07a1223a7ff61305dc260effb0ce1d4b9fd63d1edf69feae1ec6ccbe0c766bf20ca4254699945b8da4950b4340501d848a5cd5dc7620

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
168cdc4051b22f65601a4f05cd227e5b

SHA1
05a291241bc05c8d765b58d587f87e33d390a5ce

SHA256
cb3430d5cd69ac7f258495de7e2c854b6f706ae093f0eaa068185d2d229da9b7

SHA512
ffcc244e940498cce4f008749cc2420b032ba2264a929a0c080df942075aae44c4d059f57ad02291cf43060fc61ed7e24bdb8028c9595b610f80a28747b0cf63

Download Submit
memory/1404-12-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads