Analysis
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max time kernel
46s -
max time network
81s -
platform
windows10-2004_x64 -
resource
win10v2004-20230831-en -
resource tags
arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system -
submitted
14-09-2023 19:17
Static task
static1
Behavioral task
behavioral1
Sample
docbit20230908.exe
Resource
win7-20230831-en
General
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Target
docbit20230908.exe
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Size
400.0MB
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MD5
81e0872e2be9487534ddd879b05e6f62
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SHA1
f97c783cb79036a9f2ff27e70a182f1b6919da18
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SHA256
d54df888565db74fd2065bfa327e5b5d2476df10564a25f2b99f3bf7f9504ab0
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SHA512
40bfff8cb99869510332a8f2c4f62a354de1ed0aa02fcef522c38deecac90c5429a19ee31c1d3eac6bf10f3e7e9cd3439891c949f5d2763bf2463d7bcdab6f90
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SSDEEP
98304:XZ7MAV7nUqgfiWsNkFi589X/JiQGTfZ5MULBhT8i4wv7:XZ7tVDUq6iPkFiedRiQePLBpUw
Malware Config
Extracted
bitrat
1.38
homesafe1000.duckdns.org:1234
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communication_password
81dc9bdb52d04dc20036dbd8313ed055
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tor_process
tor
Signatures
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Executes dropped EXE 1 IoCs
Processes:
svchost.exepid Process 4868 svchost.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
Processes:
RegAsm.exepid Process 3356 RegAsm.exe 3356 RegAsm.exe 3356 RegAsm.exe 3356 RegAsm.exe 3356 RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
docbit20230908.exedescription pid Process procid_target PID 4860 set thread context of 3356 4860 docbit20230908.exe 99 -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid Process Token: SeShutdownPrivilege 3356 RegAsm.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
RegAsm.exepid Process 3356 RegAsm.exe 3356 RegAsm.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
docbit20230908.execmd.exedescription pid Process procid_target PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 3356 4860 docbit20230908.exe 99 PID 4860 wrote to memory of 5024 4860 docbit20230908.exe 100 PID 4860 wrote to memory of 5024 4860 docbit20230908.exe 100 PID 4860 wrote to memory of 5024 4860 docbit20230908.exe 100 PID 4860 wrote to memory of 500 4860 docbit20230908.exe 102 PID 4860 wrote to memory of 500 4860 docbit20230908.exe 102 PID 4860 wrote to memory of 500 4860 docbit20230908.exe 102 PID 4860 wrote to memory of 3540 4860 docbit20230908.exe 101 PID 4860 wrote to memory of 3540 4860 docbit20230908.exe 101 PID 4860 wrote to memory of 3540 4860 docbit20230908.exe 101 PID 500 wrote to memory of 384 500 cmd.exe 106 PID 500 wrote to memory of 384 500 cmd.exe 106 PID 500 wrote to memory of 384 500 cmd.exe 106
Processes
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C:\Users\Admin\AppData\Local\Temp\docbit20230908.exe"C:\Users\Admin\AppData\Local\Temp\docbit20230908.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4860 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3356
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C:\Windows\SysWOW64\cmd.exe"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\svchost"2⤵PID:5024
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C:\Windows\SysWOW64\cmd.exe"cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\docbit20230908.exe" "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe"2⤵PID:3540
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C:\Windows\SysWOW64\cmd.exe"cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f2⤵
- Suspicious use of WriteProcessMemory
PID:500 -
C:\Windows\SysWOW64\schtasks.exeschtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f3⤵
- Creates scheduled task(s)
PID:384
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C:\Users\Admin\AppData\Roaming\svchost\svchost.exeC:\Users\Admin\AppData\Roaming\svchost\svchost.exe1⤵
- Executes dropped EXE
PID:4868