wannacry | edd1fbcf42000838a7cb6bc32d4f41d8c2f894c0e749f0239b238d0432d0bf92

Analysis

max time kernel
173s
max time network
219s
platform
windows10_x64
resource
win10v20201028
submitted
26-12-2020 20:16

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General

Target

WannaCry/Trojan-Ransom.Win32.Wanna.m.0d95f3f64e7782ec7acd3a1b76c276a6.dll
Size

5.0MB
MD5

0d95f3f64e7782ec7acd3a1b76c276a6
SHA1

c9301e03c44831417d5afad96921e565577c08cf
SHA256

0b352401619b8b6375dd37ba94a8b73526f428631ac12145858a94ce354b5ddc
SHA512

2e0c5066169488d18fe4dd4981e90066ddf66ab0aa2dab41aecd0e444e595894bd418ab896503d4b2fbee98f9c13506911561e11f881117a74e9e1017eca6eb0

Score

10^/10

wannacry ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Executes dropped EXE 3 IoCs

Processes:

mssecsvr.exemssecsvr.exetasksche.exe

pid process

3304 mssecsvr.exe
1324 mssecsvr.exe
3208 tasksche.exe

pid	process
3304	mssecsvr.exe
1324	mssecsvr.exe
3208	tasksche.exe

Drops file in System32 directory 7 IoCs

Processes:

mssecsvr.exe

description	ioc	process
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies\8382614H.cookie	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies\8382614H.cookie	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\counters2.dat	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	mssecsvr.exe

Drops file in Windows directory 4 IoCs

Processes:

tasksche.exerundll32.exemssecsvr.exe

description	ioc	process
File created	C:\Windows\eee.exe	tasksche.exe
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259364671	tasksche.exe

Modifies data under HKEY_USERS 8 IoCs

Processes:

mssecsvr.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

rundll32.exerundll32.exemssecsvr.exe

description	pid	process	target process
PID 1012 wrote to memory of 752	1012	rundll32.exe	rundll32.exe
PID 1012 wrote to memory of 752	1012	rundll32.exe	rundll32.exe
PID 1012 wrote to memory of 752	1012	rundll32.exe	rundll32.exe
PID 752 wrote to memory of 3304	752	rundll32.exe	mssecsvr.exe
PID 752 wrote to memory of 3304	752	rundll32.exe	mssecsvr.exe
PID 752 wrote to memory of 3304	752	rundll32.exe	mssecsvr.exe
PID 3304 wrote to memory of 3208	3304	mssecsvr.exe	tasksche.exe
PID 3304 wrote to memory of 3208	3304	mssecsvr.exe	tasksche.exe
PID 3304 wrote to memory of 3208	3304	mssecsvr.exe	tasksche.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\WannaCry\Trojan-Ransom.Win32.Wanna.m.0d95f3f64e7782ec7acd3a1b76c276a6.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1012

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\WannaCry\Trojan-Ransom.Win32.Wanna.m.0d95f3f64e7782ec7acd3a1b76c276a6.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:752

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3304

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3208

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1324

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvr.exe
MD5
be31aaec48f653b49a4ef8d9f4718bac

SHA1
02d1ec8b78ac096f5f175e1e11c47411b2088f4a

SHA256
15fd3b514b40082951c33e3a0b6b1164bd244ca0806162a3ebc61c90ab39d98d

SHA512
c3f428639b8008ba06c1a230ec0742f5b06b04f7e0fd7b4770641d9c19b880bcd3f65a45154fa26d2684f052fe014c479a28dc94756142322805679e00d104ad

Download Submit
C:\WINDOWS\tasksche.exe
MD5
523fced1367557eff377b4795b8f9e83

SHA1
7caf8700303a20d1836e33ba45bd722207a46c8f

SHA256
a82524f5d7849444d4c2228c831205a288863f4d21422e7eac593ae191c32c31

SHA512
d0d53dc64c84a112c61381204eade9f8e1890e52aba110b40804b2d373255b7ba5e02f34bb55e3e8727f8a0e524aff1a2780daaa2b16946fcb05ae67e338e3f4

Download Submit
C:\Windows\mssecsvr.exe
MD5
be31aaec48f653b49a4ef8d9f4718bac

SHA1
02d1ec8b78ac096f5f175e1e11c47411b2088f4a

SHA256
15fd3b514b40082951c33e3a0b6b1164bd244ca0806162a3ebc61c90ab39d98d

SHA512
c3f428639b8008ba06c1a230ec0742f5b06b04f7e0fd7b4770641d9c19b880bcd3f65a45154fa26d2684f052fe014c479a28dc94756142322805679e00d104ad

Download Submit
C:\Windows\mssecsvr.exe
MD5
be31aaec48f653b49a4ef8d9f4718bac

SHA1
02d1ec8b78ac096f5f175e1e11c47411b2088f4a

SHA256
15fd3b514b40082951c33e3a0b6b1164bd244ca0806162a3ebc61c90ab39d98d

SHA512
c3f428639b8008ba06c1a230ec0742f5b06b04f7e0fd7b4770641d9c19b880bcd3f65a45154fa26d2684f052fe014c479a28dc94756142322805679e00d104ad

Download Submit
C:\Windows\tasksche.exe
MD5
523fced1367557eff377b4795b8f9e83

SHA1
7caf8700303a20d1836e33ba45bd722207a46c8f

SHA256
a82524f5d7849444d4c2228c831205a288863f4d21422e7eac593ae191c32c31

SHA512
d0d53dc64c84a112c61381204eade9f8e1890e52aba110b40804b2d373255b7ba5e02f34bb55e3e8727f8a0e524aff1a2780daaa2b16946fcb05ae67e338e3f4

Download Submit
memory/752-2-0x0000000000000000-mapping.dmp

Download
memory/3208-7-0x0000000000000000-mapping.dmp

Download
memory/3304-3-0x0000000000000000-mapping.dmp

Download