Analysis
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max time kernel
152s -
max time network
176s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
21/09/2022, 14:26
Static task
static1
Behavioral task
behavioral1
Sample
file.ps1
Resource
win7-20220812-en
General
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Target
file.ps1
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Size
346B
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MD5
c1b48a15c4dff984d471cd8e5e8e094f
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SHA1
18f1f447d139adfddb526e83c327ba665bfba1b2
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SHA256
334d41d1daf71550a19c4c241ab83af52c942da8b53e5ef55be61984050215e5
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SHA512
f3fd36bc2b82ca79aa85b2433dc1cdb2c90cd08e911081822f97d89a6c8f7a9a50c0bf601c02f780293b664aeb223aa70af796bc44e77f07f9a1af8d104cd417
Malware Config
Extracted
njrat
0.7NC
NYAN CAT
envios000.duckdns.org:7777
63d644bf02114593bb3
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reg_key
63d644bf02114593bb3
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splitter
@!#&^%$
Signatures
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Blocklisted process makes network request 4 IoCs
flow pid Process 6 1112 powershell.exe 8 1112 powershell.exe 15 1112 powershell.exe 17 1112 powershell.exe -
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\notepad.lnk powershell.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1112 set thread context of 3068 1112 powershell.exe 82 -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1112 powershell.exe 1112 powershell.exe 3404 powershell.exe 3404 powershell.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 1112 powershell.exe Token: SeDebugPrivilege 3404 powershell.exe Token: SeDebugPrivilege 3068 RegAsm.exe Token: 33 3068 RegAsm.exe Token: SeIncBasePriorityPrivilege 3068 RegAsm.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 1112 wrote to memory of 3404 1112 powershell.exe 80 PID 1112 wrote to memory of 3404 1112 powershell.exe 80 PID 1112 wrote to memory of 3068 1112 powershell.exe 82 PID 1112 wrote to memory of 3068 1112 powershell.exe 82 PID 1112 wrote to memory of 3068 1112 powershell.exe 82 PID 1112 wrote to memory of 3068 1112 powershell.exe 82 PID 1112 wrote to memory of 3068 1112 powershell.exe 82 PID 1112 wrote to memory of 3068 1112 powershell.exe 82 PID 1112 wrote to memory of 3068 1112 powershell.exe 82 PID 1112 wrote to memory of 3068 1112 powershell.exe 82 PID 3068 wrote to memory of 3512 3068 RegAsm.exe 87 PID 3068 wrote to memory of 3512 3068 RegAsm.exe 87 PID 3068 wrote to memory of 3512 3068 RegAsm.exe 87
Processes
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\file.ps11⤵
- Blocklisted process makes network request
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1112 -
C:\Windows\System32\WindowsPowershell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowershell\v1.0\powershell.exe" -WindowStyle Hidden Copy-Item -Path *.vbs -Destination C:\Windows\Temp\Done.vbs2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3404
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3068 -
C:\Windows\SysWOW64\cmd.execmd.exe /C Y /N /D Y /T 1 & Del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"3⤵PID:3512
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Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
2KB
MD56cf293cb4d80be23433eecf74ddb5503
SHA124fe4752df102c2ef492954d6b046cb5512ad408
SHA256b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8
SHA5120f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00
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Filesize
1KB
MD55a0a1671f3117ae81bc90e79eac37471
SHA1e102d030a87a2d6243344b26344636e94ce13572
SHA256228ede5639b6eeaab79ba585854e63b701147e30d8871c998208171e34d6747a
SHA512f84a29cdc79a2788c2e2d95cc7f357661f60592a34095401b4ff585a05d08b2f6a22c38e72ecada6a88d3b1665c850719817bac9aa1e5dcdef61130779ecdbff