wannacry | c22fdda6e1e9e40bfb197493b9e98ed7315fd8579e2b9a9534bff76c5ee2ee03

General

Target

2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Size

5.0MB
MD5

83164fdcee6ea5a4ae533e67350a0f3d
SHA1

982590433087d96d38945abf7686ea99204332df
SHA256

c22fdda6e1e9e40bfb197493b9e98ed7315fd8579e2b9a9534bff76c5ee2ee03
SHA512

123e0757569c11f9d546961fcaf2b1415becc478cb3995cc31fc34054b867c0c3ad2cddd5fbd10ed6fdcc4737867679048763fad741669dc0aab033f1543c0f0
SSDEEP

98304:yDqWSI8oWrVI1zQNpxlMgjG6WUeZH1JugtoC0GRFa9w2eJ0mh/SkVmw/0JPPriqy:yDqrMpoDLSLrd1btpfaLL8/SkVVyriC

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3209) 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 1 IoCs

Processes:

tasksche.exe

pid process

2688 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
2688	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe

Drops file in Windows directory 1 IoCs

Processes:

2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe

description ioc process

File created C:\WINDOWS\tasksche.exe 2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0088000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8518ACB5-3048-4D67-AB43-B58FAB7D6764}\WpadDecision = "0"	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8518ACB5-3048-4D67-AB43-B58FAB7D6764}\WpadNetworkName = "Network 3"	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-5d-07-56-06-d1\WpadDecisionReason = "1"	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-5d-07-56-06-d1\WpadDecision = "0"	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8518ACB5-3048-4D67-AB43-B58FAB7D6764}\WpadDecisionTime = 10f3128ead4fda01	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8518ACB5-3048-4D67-AB43-B58FAB7D6764}	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-5d-07-56-06-d1	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8518ACB5-3048-4D67-AB43-B58FAB7D6764}\b6-5d-07-56-06-d1	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8518ACB5-3048-4D67-AB43-B58FAB7D6764}\WpadDecisionReason = "1"	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b6-5d-07-56-06-d1\WpadDecisionTime = 10f3128ead4fda01	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe"
1⤵
- Drops file in Windows directory
PID:3032
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2688

C:\Users\Admin\AppData\Local\Temp\2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-01-25_83164fdcee6ea5a4ae533e67350a0f3d_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2540

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\tasksche.exe

Filesize
3.4MB

MD5
0f58fece592349524e5992034af9852d

SHA1
0cb5eeaa995f962b9f6cae7e86deb6bb42747f9b

SHA256
2e2a6be659f9952fe0a84f56636737186fb4cec73b5c8a58a8117a5808d690bf

SHA512
53a6ee79a8253b58317296d21e80b02fe3f85bb7b594bb7c378d02bd54123bf045c1a2b9f568865bebe84baff73b3f65aa34f4ebfe15ff70959b4ed09905c046

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