wannacry | b618f24c991a75fe6ae3057af2b6b544046ab0434fa7c57a5b7eded51d752e29

General

Target

2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Size

5.0MB
MD5

3c620a41d7538118181e872340c388ea
SHA1

3da7b1159862bb7922e43de1361c6d4a72f7bd77
SHA256

b618f24c991a75fe6ae3057af2b6b544046ab0434fa7c57a5b7eded51d752e29
SHA512

f5efeb4aee78c9d9f7fba59ad0a87e022371394b80815320645af395055bef255a3fd0ef7ed54b89ba59ec2ec3c0294f4948814ab937ce7f0922dbbec6696167
SSDEEP

24576:QbLguriIfEcQdIBrYbcMNgef0QeQjG/D8kIqRYoAdNLKZnV:QnpENbcBVQej/1INm

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (1986) 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

pid	Process
2736	tasksche.exe

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	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259590140	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0084000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2102CCE8-2A73-466E-AF08-AE5DAC98551A}	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2102CCE8-2A73-466E-AF08-AE5DAC98551A}\WpadDecisionReason = "1"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2102CCE8-2A73-466E-AF08-AE5DAC98551A}\WpadDecision = "0"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2102CCE8-2A73-466E-AF08-AE5DAC98551A}\WpadDecisionTime = 503e3d6c5351db01	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-c5-17-1c-b3-12\WpadDecisionReason = "1"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-c5-17-1c-b3-12\WpadDecision = "0"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2102CCE8-2A73-466E-AF08-AE5DAC98551A}\4e-c5-17-1c-b3-12	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-c5-17-1c-b3-12\WpadDecisionTime = 503e3d6c5351db01	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2102CCE8-2A73-466E-AF08-AE5DAC98551A}\WpadNetworkName = "Network 3"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-c5-17-1c-b3-12	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2736	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 572 wrote to memory of 2736	572	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe	31
PID 572 wrote to memory of 2736	572	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe	31
PID 572 wrote to memory of 2736	572	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe	31
PID 572 wrote to memory of 2736	572	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe	31
PID 572 wrote to memory of 2736	572	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe	31
PID 572 wrote to memory of 2736	572	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe	31
PID 572 wrote to memory of 2736	572	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:572
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2736

C:\Users\Admin\AppData\Local\Temp\2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\WINDOWS\tasksche.exe

Filesize
2.0MB

MD5
836f2449e518945bb855b8bcae3a58eb

SHA1
f66594589ac266d45d8870c6dd099efebfa07cc8

SHA256
98d3de962eec0c931aae151efbfb3cc3bb1f48e691f4319a469f514c92c53cfb

SHA512
5d08c649a175496b3c253b0953a2125ac7adc165b75929aec9339ee5f89932d4c7706b518e15e6bfacd4c194ab025aeedde73a7d0c7c12f12b5babf5977cdf31

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