wannacry | 0b352401619b8b6375dd37ba94a8b73526f428631ac12145858a94ce354b5ddc

Resubmissions

25-06-2024 09:40

240625-lnlq1ssbmc 10

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25-06-2024 09:40

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General

Target

0d95f3f64e7782ec7acd3a1b76c276a6_JaffaCakes118.dll
Size

5.0MB
MD5

0d95f3f64e7782ec7acd3a1b76c276a6
SHA1

c9301e03c44831417d5afad96921e565577c08cf
SHA256

0b352401619b8b6375dd37ba94a8b73526f428631ac12145858a94ce354b5ddc
SHA512

2e0c5066169488d18fe4dd4981e90066ddf66ab0aa2dab41aecd0e444e595894bd418ab896503d4b2fbee98f9c13506911561e11f881117a74e9e1017eca6eb0
SSDEEP

24576:RbLguriIfEcQdIVUacMNgef0QeQjG/D8kIqRYoAdNLK:RnpEKUacBVQej/1IN

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2731) 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 3 IoCs

pid	Process
2916	mssecsvr.exe
2472	mssecsvr.exe
3612	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

Drops file in System32 directory 4 IoCs

description	ioc	Process
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

description	ioc	Process
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_240667375	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	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\UNCAsIntranet = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	mssecsvr.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4296 wrote to memory of 1680	4296	rundll32.exe	91
PID 4296 wrote to memory of 1680	4296	rundll32.exe	91
PID 4296 wrote to memory of 1680	4296	rundll32.exe	91
PID 1680 wrote to memory of 2916	1680	rundll32.exe	92
PID 1680 wrote to memory of 2916	1680	rundll32.exe	92
PID 1680 wrote to memory of 2916	1680	rundll32.exe	92
PID 2916 wrote to memory of 3612	2916	mssecsvr.exe	94
PID 2916 wrote to memory of 3612	2916	mssecsvr.exe	94
PID 2916 wrote to memory of 3612	2916	mssecsvr.exe	94

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0d95f3f64e7782ec7acd3a1b76c276a6_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4296
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0d95f3f64e7782ec7acd3a1b76c276a6_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1680
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of WriteProcessMemory
    PID:2916
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      Drops file in Windows directory
      PID:3612

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:2472

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
1⤵
PID:404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
be31aaec48f653b49a4ef8d9f4718bac

SHA1
02d1ec8b78ac096f5f175e1e11c47411b2088f4a

SHA256
15fd3b514b40082951c33e3a0b6b1164bd244ca0806162a3ebc61c90ab39d98d

SHA512
c3f428639b8008ba06c1a230ec0742f5b06b04f7e0fd7b4770641d9c19b880bcd3f65a45154fa26d2684f052fe014c479a28dc94756142322805679e00d104ad

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C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
523fced1367557eff377b4795b8f9e83

SHA1
7caf8700303a20d1836e33ba45bd722207a46c8f

SHA256
a82524f5d7849444d4c2228c831205a288863f4d21422e7eac593ae191c32c31

SHA512
d0d53dc64c84a112c61381204eade9f8e1890e52aba110b40804b2d373255b7ba5e02f34bb55e3e8727f8a0e524aff1a2780daaa2b16946fcb05ae67e338e3f4

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