Analysis
- max time kernel
300s - max time network
300s - platform
windows7_x64 - resource
win7-20240215-en - resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system - submitted
27/03/2024, 02:56
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
Win32.Wannacry.dll
Resource
win7-20240215-en
windows7-x64
8 signatures
300 seconds
Behavioral task
behavioral2
Sample
Win32.Wannacry.dll
Resource
win10v2004-20231215-en
windows10-2004-x64
7 signatures
300 seconds
Behavioral task
behavioral3
Sample
Win32.Wannacry.dll
Resource
win11-20240221-en
windows11-21h2-x64
6 signatures
300 seconds
General
- Target Win32.Wannacry.dll
- Size 5.0MB
- Sample240327-de4apseb6s
- SHA256 55504677f82981962d85495231695d3a92aa0b31ec35a957bd9cbbef618658e3
- MD5 30fe2f9a048d7a734c8d9233f64810ba
- SHA1 2027a053de21bd5c783c3f823ed1d36966780ed4
- SHA512 b657b02506f768db3255293b0c86452b4dfdd30804629c323aaa9510a3b637b0906e5963179ef7d4aaedc14646f2be2b4292e6584a6c55c6ddb596cff7f20e2a
- SSDEEP 49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9:+DqPoBhz1aRxcSUDk36SAEdhvxWa9
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Wannacry
WannaCry is a ransomware cryptoworm.
- Contacts a large (7097) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
- Executes dropped EXE 3 IoCs
pid Process 2256 mssecsvc.exe 2204 mssecsvc.exe 2512 tasksche.exe - Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
- 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 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 Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9908DB08-3326-47EB-B807-422C74959E11}\WpadDecisionTime = f0f8a662f27fda01 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9908DB08-3326-47EB-B807-422C74959E11}\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-9a-38-b9-68-70 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-9a-38-b9-68-70\WpadDecisionReason = "1" 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\ZoneMap\ mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f005c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9908DB08-3326-47EB-B807-422C74959E11} mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9908DB08-3326-47EB-B807-422C74959E11}\WpadDecisionReason = "1" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-9a-38-b9-68-70\WpadDecisionTime = f0f8a662f27fda01 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ca-9a-38-b9-68-70\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections 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\ZoneMap\AutoDetect = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9908DB08-3326-47EB-B807-422C74959E11}\ca-9a-38-b9-68-70 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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 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 mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9908DB08-3326-47EB-B807-422C74959E11}\WpadNetworkName = "Network 3" mssecsvc.exe - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2832 wrote to memory of 2220 2832 rundll32.exe 28 PID 2832 wrote to memory of 2220 2832 rundll32.exe 28 PID 2832 wrote to memory of 2220 2832 rundll32.exe 28 PID 2832 wrote to memory of 2220 2832 rundll32.exe 28 PID 2832 wrote to memory of 2220 2832 rundll32.exe 28 PID 2832 wrote to memory of 2220 2832 rundll32.exe 28 PID 2832 wrote to memory of 2220 2832 rundll32.exe 28 PID 2220 wrote to memory of 2256 2220 rundll32.exe 29 PID 2220 wrote to memory of 2256 2220 rundll32.exe 29 PID 2220 wrote to memory of 2256 2220 rundll32.exe 29 PID 2220 wrote to memory of 2256 2220 rundll32.exe 29
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\Win32.Wannacry.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2832 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\Win32.Wannacry.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2220 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2256 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:2512
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2204
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Windows\mssecsvc.exe
- Size 3.6MB
- SHA256 e1bee0f7a7cd0ac8659033d9e67bfc83ae03843ed30dff8ca590f916604a6de7
- MD5 90a1e06d78737b9a87e8ea42f76e2544
- SHA1 785ddf8bd3add2da415cbc7c39aab7eb21407d20
- SHA512 40ee623eb975b3890d3e8260e76963d078a7734c040d4151fa0cf11fd6e2421f5ea609f67922a51c6df7a09f077087361586d5f40208bc97ee70531e2a3df5be
- SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9:yDqPoBhz1aRxcSUDk36SAEdhvxWa9
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\tasksche.exe
- Size 3.4MB
- SHA256 10111f53da4181d548ea77cc91f02a15b9ede3f111f074230761f2afee7cd637
- MD5 0df2ae526d7350c2e3d1383c07a6be04
- SHA1 06c4d41c60736ea1e0bb1b095536499e05068442
- SHA512 9ca1ca36dcefdb1eba3152bc2d14c9dceb3360960338d13db5f8a02327aef80cb0ab238c2c1f3d2dbd7fd75124d4199b5cd63f173a09a0dea212ebb265f8453d
- SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9:QqPoBhz1aRxcSUDk36SAEdhvxWa9
- MD5 SHA1 SHA512 SSDEEP