Analysis
- max time kernel
149s - max time network
152s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
25/09/2021, 22:01
Static task
static1
Behavioral task
behavioral1
Sample
05efb99eaef063c9f393067c3e081c1a.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
05efb99eaef063c9f393067c3e081c1a.exe
Resource
win10-en-20210920
General
- Target 05efb99eaef063c9f393067c3e081c1a.exe
- Size 433KB
- Sample210925-1w7qsaeaa5
- SHA256 97a681f3d9aa34f1975a5ebf188ce6a1de9089f52a29d9dd912bc8dd61cb9d33
- MD5 05efb99eaef063c9f393067c3e081c1a
- SHA1 7bd78b32625a8d0a927b051515139423046538e5
- SHA512 aff942e705065803f3a00b2351352b2f8cd644b310c63ff2a884f68268a33b6258bc5a96f50d4b0e175bd094d029cfe8f496ed673b8c917ad16107bf7c060d6b
- 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 3692 0NbFmQqJk0.exe 864 sihost.exe - Loads dropped DLL 6 IoCs
pid Process 2060 05efb99eaef063c9f393067c3e081c1a.exe 2060 05efb99eaef063c9f393067c3e081c1a.exe 2060 05efb99eaef063c9f393067c3e081c1a.exe 2060 05efb99eaef063c9f393067c3e081c1a.exe 2060 05efb99eaef063c9f393067c3e081c1a.exe 2060 05efb99eaef063c9f393067c3e081c1a.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 3368 schtasks.exe 416 schtasks.exe - Delays execution with timeout.exe 1 IoCs
pid Process 2340 timeout.exe - Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 2060 wrote to memory of 3692 2060 05efb99eaef063c9f393067c3e081c1a.exe 70 PID 2060 wrote to memory of 3692 2060 05efb99eaef063c9f393067c3e081c1a.exe 70 PID 2060 wrote to memory of 3692 2060 05efb99eaef063c9f393067c3e081c1a.exe 70 PID 2060 wrote to memory of 3392 2060 05efb99eaef063c9f393067c3e081c1a.exe 71 PID 2060 wrote to memory of 3392 2060 05efb99eaef063c9f393067c3e081c1a.exe 71 PID 2060 wrote to memory of 3392 2060 05efb99eaef063c9f393067c3e081c1a.exe 71 PID 3392 wrote to memory of 2340 3392 cmd.exe 73 PID 3392 wrote to memory of 2340 3392 cmd.exe 73 PID 3392 wrote to memory of 2340 3392 cmd.exe 73 PID 3692 wrote to memory of 3368 3692 0NbFmQqJk0.exe 74 PID 3692 wrote to memory of 3368 3692 0NbFmQqJk0.exe 74 PID 3692 wrote to memory of 3368 3692 0NbFmQqJk0.exe 74 PID 864 wrote to memory of 416 864 sihost.exe 77 PID 864 wrote to memory of 416 864 sihost.exe 77 PID 864 wrote to memory of 416 864 sihost.exe 77
Processes
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C:\Users\Admin\AppData\Local\Temp\05efb99eaef063c9f393067c3e081c1a.exe"C:\Users\Admin\AppData\Local\Temp\05efb99eaef063c9f393067c3e081c1a.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2060 -
C:\Users\Admin\AppData\Local\Temp\0NbFmQqJk0.exe"C:\Users\Admin\AppData\Local\Temp\0NbFmQqJk0.exe"2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3692 -
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:3368
-
-
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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\05efb99eaef063c9f393067c3e081c1a.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:3392 -
C:\Windows\SysWOW64\timeout.exetimeout /T 10 /NOBREAK3⤵
- Delays execution with timeout.exe
PID:2340
-
-
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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:416
-