Analysis
- max time kernel
119s - max time network
122s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
30/09/2021, 20:06
Static task
static1
Behavioral task
behavioral1
Sample
8a45a0077a84d7b42e5dfaaf5fc975ac.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
8a45a0077a84d7b42e5dfaaf5fc975ac.exe
Resource
win10-en-20210920
General
- Target 8a45a0077a84d7b42e5dfaaf5fc975ac.exe
- Size 494KB
- Sample210930-yvd1zaade4
- SHA256 18c798282da89986a2aeaf8b9d85e4f3d70e991dc5186937f40e6802be3da549
- MD5 8a45a0077a84d7b42e5dfaaf5fc975ac
- SHA1 53b1b117abb74f984900eaa16deaba8a6c4b04dc
- SHA512 561937687f3ffcbf6bff1844825fdc58876183942573704ebb5e1ceeee5146ed3dddc532257a5f5259fa12f0cc500c4c01379ab680649f4db50da3cb7ff6133d
- MD5 SHA1 SHA512
Malware Config
Extracted
-
raccoon
-
f6d7183c9e82d2a9b81e6c0608450aa66cefb51f
-
url4cnc
https://t.me/justoprostohello
Signatures
- Downloads MZ/PE file
- Executes dropped EXE 2 IoCs
pid Process 2648 QA0DRtkmQw.exe 864 sihost.exe - Loads dropped DLL 6 IoCs
pid Process 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe - Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 496 schtasks.exe 812 schtasks.exe - Delays execution with timeout.exe 1 IoCs
pid Process 3376 timeout.exe - Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1588 wrote to memory of 2648 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 70 PID 1588 wrote to memory of 2648 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 70 PID 1588 wrote to memory of 2648 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 70 PID 1588 wrote to memory of 1768 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 71 PID 1588 wrote to memory of 1768 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 71 PID 1588 wrote to memory of 1768 1588 8a45a0077a84d7b42e5dfaaf5fc975ac.exe 71 PID 1768 wrote to memory of 3376 1768 cmd.exe 73 PID 1768 wrote to memory of 3376 1768 cmd.exe 73 PID 1768 wrote to memory of 3376 1768 cmd.exe 73 PID 2648 wrote to memory of 496 2648 QA0DRtkmQw.exe 74 PID 2648 wrote to memory of 496 2648 QA0DRtkmQw.exe 74 PID 2648 wrote to memory of 496 2648 QA0DRtkmQw.exe 74 PID 864 wrote to memory of 812 864 sihost.exe 77 PID 864 wrote to memory of 812 864 sihost.exe 77 PID 864 wrote to memory of 812 864 sihost.exe 77
Processes
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C:\Users\Admin\AppData\Local\Temp\8a45a0077a84d7b42e5dfaaf5fc975ac.exe"C:\Users\Admin\AppData\Local\Temp\8a45a0077a84d7b42e5dfaaf5fc975ac.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1588 -
C:\Users\Admin\AppData\Local\Temp\QA0DRtkmQw.exe"C:\Users\Admin\AppData\Local\Temp\QA0DRtkmQw.exe"2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2648 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\sihost.exe"3⤵
- Creates scheduled task(s)
PID:496
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C:\Windows\SysWOW64\cmd.execmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\8a45a0077a84d7b42e5dfaaf5fc975ac.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:1768 -
C:\Windows\SysWOW64\timeout.exetimeout /T 10 /NOBREAK3⤵
- Delays execution with timeout.exe
PID:3376
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C:\Users\Admin\AppData\Roaming\Microsoft\Network\sihost.exeC:\Users\Admin\AppData\Roaming\Microsoft\Network\sihost.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:864 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\sihost.exe"2⤵
- Creates scheduled task(s)
PID:812
-