Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
29-01-2021 16:39
Static task
static1
Behavioral task
behavioral1
Sample
73550af1c4f17e028355c872271f8627.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
73550af1c4f17e028355c872271f8627.exe
Resource
win10v20201028
General
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Target
73550af1c4f17e028355c872271f8627.exe
-
Size
681KB
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MD5
73550af1c4f17e028355c872271f8627
-
SHA1
f29d5e4d73b369f2c3ef5ad534d275fdc1e713a7
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SHA256
329e8c0525a2c1c5fecced5d189ff5e7a063e8a1188415f42f3543f945fe0337
-
SHA512
9c1ad44421632c65e1a54fdb42cf24ad7112c25b299cda4d086ab3e0ee2688cdd5d6aaef1a50f87bf1193796533ddf3093c5f229a15d804dab0df907e104cfd5
Malware Config
Extracted
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
WyhjVTBX5hjrgu7
Extracted
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected]
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/3200-25-0x0000000000400000-0x000000000046A000-memory.dmp family_snakekeylogger behavioral2/memory/3200-26-0x000000000046463E-mapping.dmp family_snakekeylogger -
Drops startup file 2 IoCs
Processes:
Powershell.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\I$s#$lT3ssl.exe Powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\I$s#$lT3ssl.exe Powershell.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 10 checkip.dyndns.org 13 freegeoip.app 14 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
Processes:
73550af1c4f17e028355c872271f8627.exedescription pid process target process PID 4808 set thread context of 3200 4808 73550af1c4f17e028355c872271f8627.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
Powershell.exeRegAsm.exepid process 4348 Powershell.exe 4348 Powershell.exe 3200 RegAsm.exe 4348 Powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Powershell.exeRegAsm.exedescription pid process Token: SeDebugPrivilege 4348 Powershell.exe Token: SeDebugPrivilege 3200 RegAsm.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
73550af1c4f17e028355c872271f8627.exedescription pid process target process PID 4808 wrote to memory of 4348 4808 73550af1c4f17e028355c872271f8627.exe Powershell.exe PID 4808 wrote to memory of 4348 4808 73550af1c4f17e028355c872271f8627.exe Powershell.exe PID 4808 wrote to memory of 4348 4808 73550af1c4f17e028355c872271f8627.exe Powershell.exe PID 4808 wrote to memory of 3200 4808 73550af1c4f17e028355c872271f8627.exe RegAsm.exe PID 4808 wrote to memory of 3200 4808 73550af1c4f17e028355c872271f8627.exe RegAsm.exe PID 4808 wrote to memory of 3200 4808 73550af1c4f17e028355c872271f8627.exe RegAsm.exe PID 4808 wrote to memory of 3200 4808 73550af1c4f17e028355c872271f8627.exe RegAsm.exe PID 4808 wrote to memory of 3200 4808 73550af1c4f17e028355c872271f8627.exe RegAsm.exe PID 4808 wrote to memory of 3200 4808 73550af1c4f17e028355c872271f8627.exe RegAsm.exe PID 4808 wrote to memory of 3200 4808 73550af1c4f17e028355c872271f8627.exe RegAsm.exe PID 4808 wrote to memory of 3200 4808 73550af1c4f17e028355c872271f8627.exe RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\73550af1c4f17e028355c872271f8627.exe"C:\Users\Admin\AppData\Local\Temp\73550af1c4f17e028355c872271f8627.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4808 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\73550af1c4f17e028355c872271f8627.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\I$s#$lT3ssl.exe'2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4348 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3200