wannacry | 632533f6fd9c4096f0d985c88aa862aa21df97e95da6e7edc0566ec17605f330

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
20/07/2022, 07:17

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General

Target
8b8aba412ea28b2a7d3d8a167336e576.dll
Size 5.0MB
Sample220720-h4cw9sdecj
SHA256 632533f6fd9c4096f0d985c88aa862aa21df97e95da6e7edc0566ec17605f330
MD5 8b8aba412ea28b2a7d3d8a167336e576
SHA1 521dcf594e65f9f755f5f56021a8b0e4cd224624
SHA512 e82df04a86b89ba1fc9306b592d5792e0dcd0f06558d274a07edb8a3dc064d23a65f7c73a9b5eb6f5984142ca80f7f065fad91f46575a5d492833ff70fdeee42
MD5 SHA1 SHA512

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3059) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046

Executes dropped EXE 3 IoCs

pid	Process
1648	mssecsvc.exe
4684	mssecsvc.exe
4332	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 Scanning
T1046

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 5 IoCs

description	ioc	Process
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\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 1176	1964	rundll32.exe	77
PID 1964 wrote to memory of 1176	1964	rundll32.exe	77
PID 1964 wrote to memory of 1176	1964	rundll32.exe	77
PID 1176 wrote to memory of 1648	1176	rundll32.exe	78
PID 1176 wrote to memory of 1648	1176	rundll32.exe	78
PID 1176 wrote to memory of 1648	1176	rundll32.exe	78

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8b8aba412ea28b2a7d3d8a167336e576.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8b8aba412ea28b2a7d3d8a167336e576.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1176
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1648
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4332

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4684

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mssecsvc.exe

Path C:\WINDOWS\mssecsvc.exe
Size 3.6MB
SHA256 410d98bfdaa6728c146857dea114a110dc68158171633134fc8ab92c8bcb0c6f
MD5 b0acac1c0fdd109485e8d5486d5506da
SHA1 a56bac78a5108b234f15c8d4a5b56ed6e246b26a
SHA512 b37a9414909f7e5dc2a91d3b39ababb048ac0e8b8c03dafd4ac13b67f128ea8af7477f12c63d63e301f15e29141ed6405299faaa638eda46c31bc758e60f008d
SSDEEP 98304:yDqPoBhz1aRxcSUDkL+h13TrfHNOcD2jbjBtfxCoQbBt23:yDqPe1CxcxkSn3TrvNOcD2jfBt5TQbBo
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 410d98bfdaa6728c146857dea114a110dc68158171633134fc8ab92c8bcb0c6f
MD5 b0acac1c0fdd109485e8d5486d5506da
SHA1 a56bac78a5108b234f15c8d4a5b56ed6e246b26a
SHA512 b37a9414909f7e5dc2a91d3b39ababb048ac0e8b8c03dafd4ac13b67f128ea8af7477f12c63d63e301f15e29141ed6405299faaa638eda46c31bc758e60f008d
SSDEEP 98304:yDqPoBhz1aRxcSUDkL+h13TrfHNOcD2jbjBtfxCoQbBt23:yDqPe1CxcxkSn3TrvNOcD2jfBt5TQbBo
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 410d98bfdaa6728c146857dea114a110dc68158171633134fc8ab92c8bcb0c6f
MD5 b0acac1c0fdd109485e8d5486d5506da
SHA1 a56bac78a5108b234f15c8d4a5b56ed6e246b26a
SHA512 b37a9414909f7e5dc2a91d3b39ababb048ac0e8b8c03dafd4ac13b67f128ea8af7477f12c63d63e301f15e29141ed6405299faaa638eda46c31bc758e60f008d
SSDEEP 98304:yDqPoBhz1aRxcSUDkL+h13TrfHNOcD2jbjBtfxCoQbBt23:yDqPe1CxcxkSn3TrvNOcD2jfBt5TQbBo
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 20c39be420c335987e0cfb42a95239ec72ca428892348b8439002b7f2ddc5439
MD5 ee9e7abe61590a562f84e703ddccaa00
SHA1 7d92d5ed596246a3b374441ce43c102ad86437c9
SHA512 7ac0689b0f4a2fdcdc07a0dbefe4acbb633990f2746e4aad3e9f3ba43bc8661bf99f95963792c67e0a70a673afeca5eb56b459e333d6a3af4f0ed4f1acca7d03
SSDEEP 98304:QqPoBhz1aRxcSUDkL+h13TrfHNOcD2jbjBtfxCoQbBt2d:QqPe1CxcxkSn3TrvNOcD2jfBt5TQbBtc
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads