c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466

Analysis

max time kernel
74s
max time network
31s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 09:49

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General

Target

c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe
Size

100KB
MD5

f43e306c506b95075994a9edf198791e
SHA1

62e2f760eaa143df1c11de9393bedd58fb457839
SHA256

c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466
SHA512

411b7c4a36fe95878fa9b7087d0b349404996d59b2b154fbdcc4e92577dd908f284ebdf7a6f949f0d4e940ced78bfd6ee2a5cd2f3681c8aba2ee796319b4804e
SSDEEP

3072:aZ/MI7Ehp5/xLUa7e1d7ByNECTWWtBQYs9lxBx:a6MYH/dUa7eD7cEUWWtBA

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe"	c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/996-58-0x0000000000400000-0x0000000000439000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows\CurrentVersion\Run\C:\Users\Admin\AppData\Local\Temp\c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe"	c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

588 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 588 taskkill.exe

pid	process
588	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	588	taskkill.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe

description	pid	process	target process
PID 996 wrote to memory of 588	996	c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe	taskkill.exe
PID 996 wrote to memory of 588	996	c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe	taskkill.exe
PID 996 wrote to memory of 588	996	c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe	taskkill.exe
PID 996 wrote to memory of 588	996	c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe
"C:\Users\Admin\AppData\Local\Temp\c8a4ddd4c2b8363145336257f1e7a9367bc05515ccb7df2e7342c15eedd28466.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:996

C:\Windows\SysWOW64\taskkill.exe
taskkill /F /IM explorer.exe
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:588

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/588-57-0x0000000000000000-mapping.dmp

Download
memory/996-54-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/996-55-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/996-56-0x00000000001B0000-0x00000000001E9000-memory.dmp

Filesize
228KB

Download
memory/996-58-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/996-59-0x00000000001B0000-0x00000000001E9000-memory.dmp

Filesize
228KB

Download