Analysis
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max time kernel
52s -
max time network
91s -
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 19:21
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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Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
pid Process 1764 RegAsm.exe 1764 RegAsm.exe 1764 RegAsm.exe 1764 RegAsm.exe 1764 RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3640 set thread context of 1764 3640 docbit20230908.exe 94 -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 3552 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeShutdownPrivilege 1764 RegAsm.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1764 RegAsm.exe 1764 RegAsm.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1764 3640 docbit20230908.exe 94 PID 3640 wrote to memory of 1132 3640 docbit20230908.exe 95 PID 3640 wrote to memory of 1132 3640 docbit20230908.exe 95 PID 3640 wrote to memory of 1132 3640 docbit20230908.exe 95 PID 3640 wrote to memory of 4388 3640 docbit20230908.exe 100 PID 3640 wrote to memory of 4388 3640 docbit20230908.exe 100 PID 3640 wrote to memory of 4388 3640 docbit20230908.exe 100 PID 3640 wrote to memory of 1940 3640 docbit20230908.exe 96 PID 3640 wrote to memory of 1940 3640 docbit20230908.exe 96 PID 3640 wrote to memory of 1940 3640 docbit20230908.exe 96 PID 4388 wrote to memory of 3552 4388 cmd.exe 101 PID 4388 wrote to memory of 3552 4388 cmd.exe 101 PID 4388 wrote to memory of 3552 4388 cmd.exe 101
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:3640 -
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:1764
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C:\Windows\SysWOW64\cmd.exe"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\svchost"2⤵PID:1132
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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:1940
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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:4388 -
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:3552
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C:\Users\Admin\AppData\Roaming\svchost\svchost.exeC:\Users\Admin\AppData\Roaming\svchost\svchost.exe1⤵PID:1036
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
42KB
MD5e28c927704e2a804e49cf292df03abc8
SHA173afa72de0377e980a5ad9498179e9aa29b49b13
SHA256a7ca13e12d13e1dbe6f9ce8c99a58ae5e87d5b950c20db14bbea35c6ae4ddec9
SHA512bb9daffe4676fd359a58aac7106441bd5104a6861c519d1293c17df577b01db562ce5b5dd437798ed53452d275284d60d16c3a8f242aeacdebc183265d27300d