Analysis
- max time kernel
35s - max time network
114s - platform
windows10_x64 - resource
win10v20210408 - submitted
09/09/2021, 15:49
Static task
static1
Behavioral task
behavioral1
Sample
0059bcf133667393827a8dc6381f2516.exe
Resource
win7-en
0 signatures
0 seconds
General
- Target 0059bcf133667393827a8dc6381f2516.exe
- Size 533KB
- Sample210909-s9b72abegj
- SHA256 7ac7316234cbc2894267e99ceca5574f892cb2e49b66cfb2611d73388f0994b3
- MD5 0059bcf133667393827a8dc6381f2516
- SHA1 badc7defa6482f6cb29bcc9de37dec25baf9a4b6
- SHA512 11225535c3980530c7ea67e18ef1d4b7ddc408ba18c464a839bf38a058f1da12f6a2fd28ce7a4f00cf58dcaceab037049f6705ebd11913f254bc3d4d7a6145d4
- MD5 SHA1 SHA512
Malware Config
Signatures
- Downloads MZ/PE file
- Executes dropped EXE 2 IoCs
pid Process 1600 msIA6jVkrp.exe 3916 sihost.exe - Loads dropped DLL 5 IoCs
pid Process 4000 0059bcf133667393827a8dc6381f2516.exe 4000 0059bcf133667393827a8dc6381f2516.exe 4000 0059bcf133667393827a8dc6381f2516.exe 4000 0059bcf133667393827a8dc6381f2516.exe 4000 0059bcf133667393827a8dc6381f2516.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 1820 schtasks.exe 2164 schtasks.exe - Delays execution with timeout.exe 1 IoCs
pid Process 1676 timeout.exe - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4000 wrote to memory of 1600 4000 0059bcf133667393827a8dc6381f2516.exe 78 PID 4000 wrote to memory of 1600 4000 0059bcf133667393827a8dc6381f2516.exe 78 PID 4000 wrote to memory of 1600 4000 0059bcf133667393827a8dc6381f2516.exe 78 PID 4000 wrote to memory of 3348 4000 0059bcf133667393827a8dc6381f2516.exe 79 PID 4000 wrote to memory of 3348 4000 0059bcf133667393827a8dc6381f2516.exe 79 PID 4000 wrote to memory of 3348 4000 0059bcf133667393827a8dc6381f2516.exe 79 PID 1600 wrote to memory of 1820 1600 msIA6jVkrp.exe 82 PID 1600 wrote to memory of 1820 1600 msIA6jVkrp.exe 82 PID 1600 wrote to memory of 1820 1600 msIA6jVkrp.exe 82 PID 3916 wrote to memory of 2164 3916 sihost.exe 85 PID 3916 wrote to memory of 2164 3916 sihost.exe 85 PID 3916 wrote to memory of 2164 3916 sihost.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\0059bcf133667393827a8dc6381f2516.exe"C:\Users\Admin\AppData\Local\Temp\0059bcf133667393827a8dc6381f2516.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4000 -
C:\Users\Admin\AppData\Local\Temp\msIA6jVkrp.exe"C:\Users\Admin\AppData\Local\Temp\msIA6jVkrp.exe"2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1600 -
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:1820
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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\0059bcf133667393827a8dc6381f2516.exe"2⤵PID:3348
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C:\Windows\SysWOW64\timeout.exetimeout /T 10 /NOBREAK3⤵
- Delays execution with timeout.exe
PID:1676
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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:3916 -
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:2164
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