ac5e09927cf29318eeb315cf02cd19992afcc151de228192d332bb83e034aaaf

Analysis

max time kernel
104s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2025, 07:56

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General

Target

20250407_KoiLoader_Samples/revettedYf.ps1
Size

7KB
MD5

f44ac29d0b6c80fb590d2ae5a427050b
SHA1

9074e1c7b55c70a3489d1b40e86ff10d50e2fa51
SHA256

099e441c0d4a08144019e8c083af50123115300a9c8e8779880e81eaa46db344
SHA512

dec7b204ab0cd2e5d4b93d735adf8904e7e4b2b250b11c8243290729ae6186341f3a2a9ddfa0089ac0b36479b5097693c4e46d364341bba455a85d9a14d0cad0
SSDEEP

192:SvOuLf6+qUClbRZqwiJY5AH+W4BJeGZjf6H1XTMTqTb:SvQ+yo+yh

Score

8^/10

execution

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	2020	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
4	2020	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2020	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2020	powershell.exe
2020	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2020	powershell.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\20250407_KoiLoader_Samples\revettedYf.ps1
1⤵
- Blocklisted process makes network request
- Downloads MZ/PE file
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2020

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b4xbm5rp.oqd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2020-0-0x00007FFEB3C03000-0x00007FFEB3C05000-memory.dmp

Filesize
8KB

Download
memory/2020-11-0x0000022FBEC40000-0x0000022FBEC62000-memory.dmp

Filesize
136KB

Download
memory/2020-10-0x00007FFEB3C00000-0x00007FFEB46C1000-memory.dmp

Filesize
10.8MB

Download
memory/2020-12-0x00007FFEB3C00000-0x00007FFEB46C1000-memory.dmp

Filesize
10.8MB

Download
memory/2020-13-0x00007FFEB3C00000-0x00007FFEB46C1000-memory.dmp

Filesize
10.8MB

Download
memory/2020-14-0x0000022FA5BD0000-0x0000022FA5BD1000-memory.dmp

Filesize
4KB

Download
memory/2020-15-0x00007FFEB3C00000-0x00007FFEB46C1000-memory.dmp

Filesize
10.8MB

Download
memory/2020-16-0x00007FFEB3C00000-0x00007FFEB46C1000-memory.dmp

Filesize
10.8MB

Download