Analysis
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max time kernel
151s -
max time network
147s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
20-01-2022 19:00
Static task
static1
Behavioral task
behavioral1
Sample
8f161c203384b95bc5b20e122a9c1c68.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
8f161c203384b95bc5b20e122a9c1c68.exe
Resource
win10v2004-en-20220113
General
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Target
8f161c203384b95bc5b20e122a9c1c68.exe
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Size
323KB
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MD5
8f161c203384b95bc5b20e122a9c1c68
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SHA1
c72b4a03fef8c75ff0aab7bd97722249c9334ab0
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SHA256
4ea881ce90cbf4c9f6f26b940e062bbd147531c6754390f7e61784d892b54668
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SHA512
5b057a81759833c140153d4154f03ec6f0d544411f6739310b0c9f271b77d613c50062076a9aec951a527fed3aa55cc9d2fdd2a9bdd337912e020cd986066587
Malware Config
Extracted
bitrat
1.38
utfghjhkyut.duckdns.org:1882
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communication_password
81dc9bdb52d04dc20036dbd8313ed055
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install_dir
AppData
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install_file
chrome.exe
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tor_process
tor
Signatures
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suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)
suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)
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Processes:
resource yara_rule behavioral1/memory/1496-66-0x0000000000400000-0x00000000007E4000-memory.dmp upx behavioral1/memory/1496-67-0x0000000000400000-0x00000000007E4000-memory.dmp upx behavioral1/memory/1496-68-0x0000000000400000-0x00000000007E4000-memory.dmp upx behavioral1/memory/1496-70-0x0000000000400000-0x00000000007E4000-memory.dmp upx behavioral1/memory/1496-71-0x0000000000400000-0x00000000007E4000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegAsm.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\chrome = "C:\\Users\\Admin\\AppData\\Local\\AppData\\chrome.exe" RegAsm.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
Processes:
RegAsm.exepid process 1496 RegAsm.exe 1496 RegAsm.exe 1496 RegAsm.exe 1496 RegAsm.exe 1496 RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
8f161c203384b95bc5b20e122a9c1c68.exedescription pid process target process PID 1564 set thread context of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Runs ping.exe 1 TTPs 5 IoCs
Processes:
PING.EXEPING.EXEPING.EXEPING.EXEPING.EXEpid process 1056 PING.EXE 1944 PING.EXE 364 PING.EXE 2024 PING.EXE 1408 PING.EXE -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
powershell.exe8f161c203384b95bc5b20e122a9c1c68.exepid process 436 powershell.exe 1564 8f161c203384b95bc5b20e122a9c1c68.exe 1564 8f161c203384b95bc5b20e122a9c1c68.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
8f161c203384b95bc5b20e122a9c1c68.exepowershell.exeRegAsm.exedescription pid process Token: SeDebugPrivilege 1564 8f161c203384b95bc5b20e122a9c1c68.exe Token: SeDebugPrivilege 436 powershell.exe Token: SeDebugPrivilege 1496 RegAsm.exe Token: SeShutdownPrivilege 1496 RegAsm.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
RegAsm.exepid process 1496 RegAsm.exe 1496 RegAsm.exe -
Suspicious use of WriteProcessMemory 35 IoCs
Processes:
8f161c203384b95bc5b20e122a9c1c68.exepowershell.exedescription pid process target process PID 1564 wrote to memory of 436 1564 8f161c203384b95bc5b20e122a9c1c68.exe powershell.exe PID 1564 wrote to memory of 436 1564 8f161c203384b95bc5b20e122a9c1c68.exe powershell.exe PID 1564 wrote to memory of 436 1564 8f161c203384b95bc5b20e122a9c1c68.exe powershell.exe PID 1564 wrote to memory of 436 1564 8f161c203384b95bc5b20e122a9c1c68.exe powershell.exe PID 436 wrote to memory of 1056 436 powershell.exe PING.EXE PID 436 wrote to memory of 1056 436 powershell.exe PING.EXE PID 436 wrote to memory of 1056 436 powershell.exe PING.EXE PID 436 wrote to memory of 1056 436 powershell.exe PING.EXE PID 436 wrote to memory of 1944 436 powershell.exe PING.EXE PID 436 wrote to memory of 1944 436 powershell.exe PING.EXE PID 436 wrote to memory of 1944 436 powershell.exe PING.EXE PID 436 wrote to memory of 1944 436 powershell.exe PING.EXE PID 436 wrote to memory of 364 436 powershell.exe PING.EXE PID 436 wrote to memory of 364 436 powershell.exe PING.EXE PID 436 wrote to memory of 364 436 powershell.exe PING.EXE PID 436 wrote to memory of 364 436 powershell.exe PING.EXE PID 436 wrote to memory of 2024 436 powershell.exe PING.EXE PID 436 wrote to memory of 2024 436 powershell.exe PING.EXE PID 436 wrote to memory of 2024 436 powershell.exe PING.EXE PID 436 wrote to memory of 2024 436 powershell.exe PING.EXE PID 436 wrote to memory of 1408 436 powershell.exe PING.EXE PID 436 wrote to memory of 1408 436 powershell.exe PING.EXE PID 436 wrote to memory of 1408 436 powershell.exe PING.EXE PID 436 wrote to memory of 1408 436 powershell.exe PING.EXE PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe PID 1564 wrote to memory of 1496 1564 8f161c203384b95bc5b20e122a9c1c68.exe RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8f161c203384b95bc5b20e122a9c1c68.exe"C:\Users\Admin\AppData\Local\Temp\8f161c203384b95bc5b20e122a9c1c68.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc cABpAG4AZwAgAHkAYQBoAG8AbwAuAGMAbwBtADsAIABwAGkAbgBnACAAeQBhAGgAbwBvAC4AYwBvAG0AOwBwAGkAbgBnACAAeQBhAGgAbwBvAC4AYwBvAG0AOwBwAGkAbgBnACAAeQBhAGgAbwBvAC4AYwBvAG0AOwBwAGkAbgBnACAAeQBhAGgAbwBvAC4AYwBvAG0AOwA=2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\PING.EXE"C:\Windows\system32\PING.EXE" yahoo.com3⤵
- Runs ping.exe
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C:\Windows\SysWOW64\PING.EXE"C:\Windows\system32\PING.EXE" yahoo.com3⤵
- Runs ping.exe
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C:\Windows\SysWOW64\PING.EXE"C:\Windows\system32\PING.EXE" yahoo.com3⤵
- Runs ping.exe
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C:\Windows\SysWOW64\PING.EXE"C:\Windows\system32\PING.EXE" yahoo.com3⤵
- Runs ping.exe
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C:\Windows\SysWOW64\PING.EXE"C:\Windows\system32\PING.EXE" yahoo.com3⤵
- Runs ping.exe
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe2⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/436-59-0x00000000023C0000-0x000000000300A000-memory.dmpFilesize
12MB
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memory/436-60-0x00000000023C0000-0x000000000300A000-memory.dmpFilesize
12MB
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memory/436-58-0x00000000023C0000-0x000000000300A000-memory.dmpFilesize
12MB
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memory/1496-68-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3MB
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memory/1496-65-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3MB
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memory/1496-66-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3MB
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memory/1496-67-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3MB
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memory/1496-70-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3MB
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memory/1496-71-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3MB
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memory/1496-72-0x0000000000401000-0x00000000007E4000-memory.dmpFilesize
3MB
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memory/1564-56-0x00000000756C1000-0x00000000756C3000-memory.dmpFilesize
8KB
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memory/1564-61-0x00000000049A0000-0x00000000049A1000-memory.dmpFilesize
4KB
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memory/1564-62-0x0000000005A50000-0x0000000005BFE000-memory.dmpFilesize
1MB
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memory/1564-63-0x00000000060B0000-0x0000000006246000-memory.dmpFilesize
1MB
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memory/1564-64-0x0000000004A50000-0x0000000004A9C000-memory.dmpFilesize
304KB
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memory/1564-55-0x00000000000E0000-0x0000000000138000-memory.dmpFilesize
352KB