Analysis
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max time kernel
139s -
max time network
169s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
14-10-2023 00:10
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 1684 svchost.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
Processes:
RegAsm.exepid process 4000 RegAsm.exe 4000 RegAsm.exe 4000 RegAsm.exe 4000 RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
docbit20230908.exedescription pid process target process PID 2752 set thread context of 4000 2752 docbit20230908.exe RegAsm.exe -
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 4000 RegAsm.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
RegAsm.exepid process 4000 RegAsm.exe 4000 RegAsm.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
docbit20230908.execmd.exedescription pid process target process PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 4000 2752 docbit20230908.exe RegAsm.exe PID 2752 wrote to memory of 3048 2752 docbit20230908.exe cmd.exe PID 2752 wrote to memory of 3048 2752 docbit20230908.exe cmd.exe PID 2752 wrote to memory of 3048 2752 docbit20230908.exe cmd.exe PID 2752 wrote to memory of 1408 2752 docbit20230908.exe cmd.exe PID 2752 wrote to memory of 1408 2752 docbit20230908.exe cmd.exe PID 2752 wrote to memory of 1408 2752 docbit20230908.exe cmd.exe PID 2752 wrote to memory of 1364 2752 docbit20230908.exe cmd.exe PID 2752 wrote to memory of 1364 2752 docbit20230908.exe cmd.exe PID 2752 wrote to memory of 1364 2752 docbit20230908.exe cmd.exe PID 1408 wrote to memory of 720 1408 cmd.exe schtasks.exe PID 1408 wrote to memory of 720 1408 cmd.exe schtasks.exe PID 1408 wrote to memory of 720 1408 cmd.exe schtasks.exe
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:2752 -
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:4000 -
C:\Windows\SysWOW64\cmd.exe"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\svchost"2⤵PID:3048
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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:1364
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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:1408 -
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:720
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C:\Users\Admin\AppData\Roaming\svchost\svchost.exeC:\Users\Admin\AppData\Roaming\svchost\svchost.exe1⤵
- Executes dropped EXE
PID:1684
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Roaming\svchost\svchost.exeFilesize
23.8MB
MD5ae9ae193ad6d7e4e2455a5a7d64e76c3
SHA1dcb5ee7ac71fe598391786de8baee4fb62feb4b0
SHA25603e42d6e523166ba0762ce37390e0f4c48b56e03194bb2719d6a9260b276d756
SHA512bb728508d3cee0ea9c131c3fcb152a87b1aabb260fedbf93449fbc953c7ac9656e52fcf7c2b3e2e3321b50ab10e1c98d4050b16f651291cbd15ef2cb993a7516
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C:\Users\Admin\AppData\Roaming\svchost\svchost.exeFilesize
1024KB
MD512e734ac565f51457061d17b1cd3333d
SHA11078605403bd80cedd767e46bbab7064b9df34e4
SHA25641f73bece558d1dd48d1d60054a973eb5918df5c00237815c76c891ea25cab14
SHA512e21af84e4186c7937dde9f69243b6d4d89a56e2221f0ac7245b59cc333251560870c08d71a4dc992aa661a8ddf82c64832ce0c73861bb102f0cec7613133fa1e
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memory/2752-8-0x00000000748C0000-0x0000000075070000-memory.dmpFilesize
7.7MB
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memory/2752-1-0x00000000748C0000-0x0000000075070000-memory.dmpFilesize
7.7MB
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memory/2752-2-0x0000000005320000-0x0000000005330000-memory.dmpFilesize
64KB
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memory/2752-3-0x00000000748C0000-0x0000000075070000-memory.dmpFilesize
7.7MB
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memory/2752-4-0x0000000005320000-0x0000000005330000-memory.dmpFilesize
64KB
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memory/2752-5-0x0000000005530000-0x00000000058F8000-memory.dmpFilesize
3.8MB
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memory/2752-0-0x00000000004D0000-0x00000000008D2000-memory.dmpFilesize
4.0MB
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memory/4000-27-0x00000000746E0000-0x0000000074719000-memory.dmpFilesize
228KB
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memory/4000-34-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-14-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-16-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-18-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-20-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-22-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-24-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-25-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-10-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-29-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-30-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-31-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-32-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-33-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-12-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-35-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-36-0x0000000074A80000-0x0000000074AB9000-memory.dmpFilesize
228KB
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memory/4000-37-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-38-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-39-0x0000000074A80000-0x0000000074AB9000-memory.dmpFilesize
228KB
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memory/4000-40-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-41-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-42-0x0000000074A80000-0x0000000074AB9000-memory.dmpFilesize
228KB
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memory/4000-43-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-44-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-45-0x0000000074A80000-0x0000000074AB9000-memory.dmpFilesize
228KB
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memory/4000-9-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/4000-6-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB