Analysis
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max time kernel
141s -
max time network
101s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
22-05-2024 02:41
Static task
static1
Behavioral task
behavioral1
Sample
utweb_installer.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
utweb_installer.exe
Resource
win10v2004-20240426-en
General
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Target
utweb_installer.exe
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Size
1.7MB
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MD5
5285ef6e9757a6d1335cdae5cbf4e05f
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SHA1
cf79734fceb53a6871d8c5b50f0479d466c05144
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SHA256
a75c4cafd609535d2a23100e403be32723d8d64541f28389f2c857cd2d0b74cc
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SHA512
f0c551557cef134a8a47183337063453833e2b11a0c6ff57e1a209338bb57b5884eb52fbe9d5e83f3f549e0f1dbd46bd877d3749e8dbf7f8b34e25d6bcb907e6
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SSDEEP
24576:u7FUDowAyrTVE3U5FPF248wUMYSAba9ZA3mKZtMr3c7YB/LfDUkPV39qJ3XNEQh:uBuZrEUpx8wUGAuhKrMr3gE/LbUp3dRh
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
utweb_installer.tmppid process 3864 utweb_installer.tmp -
Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
Processes:
description flow ioc HTTP User-Agent header 5 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
utweb_installer.exedescription pid process target process PID 1556 wrote to memory of 3864 1556 utweb_installer.exe utweb_installer.tmp PID 1556 wrote to memory of 3864 1556 utweb_installer.exe utweb_installer.tmp PID 1556 wrote to memory of 3864 1556 utweb_installer.exe utweb_installer.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1556 -
C:\Users\Admin\AppData\Local\Temp\is-RCS6K.tmp\utweb_installer.tmp"C:\Users\Admin\AppData\Local\Temp\is-RCS6K.tmp\utweb_installer.tmp" /SL5="$30236,866469,820736,C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"2⤵
- Executes dropped EXE
PID:3864
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
3.0MB
MD5a9a9a17e5b6d7ed25bf33d1e6a9b5803
SHA180686d9e22ac2c7f4a12271ea41df5b877012e34
SHA256f7df82d7efca239b6c488f6464f91b46e7cae670ce05955095e8545627160445
SHA51278811555ff867101308bab9df302330986f8a5604952dc0d6e26e0d053e6147a6136889e532ddea3f71a8465ad859ddb5291291cd638d30742b26aada8403f81