Analysis
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max time kernel
150s -
max time network
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platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-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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ACProtect 1.3x - 1.4x DLL software 2 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral1/files/0x0006000000016d69-180.dat acprotect behavioral1/files/0x0006000000016d69-179.dat acprotect -
Executes dropped EXE 2 IoCs
pid Process 1388 svchost.exe 2024 svchost.exe -
Loads dropped DLL 1 IoCs
pid Process 768 RegAsm.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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resource yara_rule behavioral1/memory/1724-134-0x0000000000400000-0x00000000008DC000-memory.dmp upx behavioral1/memory/1724-201-0x0000000000400000-0x00000000008DC000-memory.dmp upx behavioral1/memory/1724-227-0x0000000000400000-0x00000000008DC000-memory.dmp upx -
Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts RegAsm.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
pid Process 2692 RegAsm.exe 2692 RegAsm.exe 2692 RegAsm.exe 2692 RegAsm.exe 2692 RegAsm.exe -
Suspicious use of SetThreadContext 5 IoCs
description pid Process procid_target PID 2604 set thread context of 2692 2604 docbit20230908.exe 30 PID 1388 set thread context of 2680 1388 svchost.exe 42 PID 2692 set thread context of 1724 2692 RegAsm.exe 43 PID 1724 set thread context of 768 1724 RegAsm.exe 49 PID 2024 set thread context of 2588 2024 svchost.exe 54 -
Drops file in Windows directory 26 IoCs
description ioc Process File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\License.XenArmor RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-math-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\freebl3.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\mozglue.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\softokn3.dll RegAsm.exe File opened for modification C:\Windows\Microsoft.NET\Framework\v4.0.30319\Unknown.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-heap-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-locale-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-multibyte-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-time-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\nss3.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\Unknown.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\License.XenArmor RegAsm.exe File opened for modification C:\Windows\Microsoft.NET\Framework\v4.0.30319\External RegAsm.exe File opened for modification C:\Windows\Microsoft.NET\Framework\v4.0.30319\License.XenArmor RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-conio-l1-1-0_not.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-convert-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-runtime-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-stdio-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\vcruntime140.dll RegAsm.exe File opened for modification C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-environment-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-filesystem-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-string-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\api-ms-win-crt-utility-l1-1-0.dll RegAsm.exe File created C:\Windows\Microsoft.NET\Framework\v4.0.30319\External\ComponentsExt\msvcp140.dll RegAsm.exe -
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2880 schtasks.exe 1132 schtasks.exe 560 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 768 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2692 RegAsm.exe Token: SeShutdownPrivilege 2692 RegAsm.exe Token: SeDebugPrivilege 768 RegAsm.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2692 RegAsm.exe 2692 RegAsm.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2692 2604 docbit20230908.exe 30 PID 2604 wrote to memory of 2684 2604 docbit20230908.exe 31 PID 2604 wrote to memory of 2684 2604 docbit20230908.exe 31 PID 2604 wrote to memory of 2684 2604 docbit20230908.exe 31 PID 2604 wrote to memory of 2684 2604 docbit20230908.exe 31 PID 2604 wrote to memory of 2144 2604 docbit20230908.exe 32 PID 2604 wrote to memory of 2144 2604 docbit20230908.exe 32 PID 2604 wrote to memory of 2144 2604 docbit20230908.exe 32 PID 2604 wrote to memory of 2144 2604 docbit20230908.exe 32 PID 2604 wrote to memory of 2424 2604 docbit20230908.exe 33 PID 2604 wrote to memory of 2424 2604 docbit20230908.exe 33 PID 2604 wrote to memory of 2424 2604 docbit20230908.exe 33 PID 2604 wrote to memory of 2424 2604 docbit20230908.exe 33 PID 2144 wrote to memory of 2880 2144 cmd.exe 37 PID 2144 wrote to memory of 2880 2144 cmd.exe 37 PID 2144 wrote to memory of 2880 2144 cmd.exe 37 PID 2144 wrote to memory of 2880 2144 cmd.exe 37 PID 1284 wrote to memory of 1388 1284 taskeng.exe 39 PID 1284 wrote to memory of 1388 1284 taskeng.exe 39 PID 1284 wrote to memory of 1388 1284 taskeng.exe 39 PID 1284 wrote to memory of 1388 1284 taskeng.exe 39 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 1388 wrote to memory of 2680 1388 svchost.exe 42 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 2692 wrote to memory of 1724 2692 RegAsm.exe 43 PID 1388 wrote to memory of 3004 1388 svchost.exe 44 PID 1388 wrote to memory of 3004 1388 svchost.exe 44 PID 1388 wrote to memory of 3004 1388 svchost.exe 44
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:2604 -
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 SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2692 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe-a "C:\Users\Admin\AppData\Local\ed01f8a1\plg\OWaKPgDg.json"3⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
PID:1724 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe-a "C:\Users\Admin\AppData\Local\Temp\unk.xml"4⤵
- Loads dropped DLL
- Accesses Microsoft Outlook accounts
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:768
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C:\Windows\SysWOW64\cmd.exe"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\svchost"2⤵PID:2684
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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:2144 -
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:2880
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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:2424
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C:\Windows\system32\taskeng.exetaskeng.exe {20599A6A-7DF5-4618-BA0E-D80B634F858B} S-1-5-21-686452656-3203474025-4140627569-1000:UUVOHKNL\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1284 -
C:\Users\Admin\AppData\Roaming\svchost\svchost.exeC:\Users\Admin\AppData\Roaming\svchost\svchost.exe2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1388 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"3⤵PID:2680
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C:\Windows\SysWOW64\cmd.exe"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\svchost"3⤵PID:3004
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C:\Windows\SysWOW64\cmd.exe"cmd" /c copy "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe" "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe"3⤵PID:2216
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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'" /f3⤵PID:2084
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f4⤵
- Creates scheduled task(s)
PID:1132
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C:\Users\Admin\AppData\Roaming\svchost\svchost.exeC:\Users\Admin\AppData\Roaming\svchost\svchost.exe2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
PID:2024 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"3⤵PID:2588
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C:\Windows\SysWOW64\cmd.exe"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\svchost"3⤵PID:872
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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'" /f3⤵PID:2892
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f4⤵
- Creates scheduled task(s)
PID:560
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C:\Windows\SysWOW64\cmd.exe"cmd" /c copy "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe" "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe"3⤵PID:2400
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
98B
MD567efe59fbf8aaf3e8de7d67dab21c2a7
SHA10869d3ea3b16639ed4a0803acea1c476e199b16c
SHA25663ca5c5c3cf4be4765115926225c060d89ef54d6f6fc3ec284cb3ecb398b0cb1
SHA51275f162ff2cc23dd7df018109264f157727fdecc869e3f493e4d0bed26b4429ab00fc9724a5ea420488ba1b4b102a07992357c0d3567c7acea6dd5333cd8cebbb
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Filesize
98B
MD567efe59fbf8aaf3e8de7d67dab21c2a7
SHA10869d3ea3b16639ed4a0803acea1c476e199b16c
SHA25663ca5c5c3cf4be4765115926225c060d89ef54d6f6fc3ec284cb3ecb398b0cb1
SHA51275f162ff2cc23dd7df018109264f157727fdecc869e3f493e4d0bed26b4429ab00fc9724a5ea420488ba1b4b102a07992357c0d3567c7acea6dd5333cd8cebbb
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Filesize
400.0MB
MD581e0872e2be9487534ddd879b05e6f62
SHA1f97c783cb79036a9f2ff27e70a182f1b6919da18
SHA256d54df888565db74fd2065bfa327e5b5d2476df10564a25f2b99f3bf7f9504ab0
SHA51240bfff8cb99869510332a8f2c4f62a354de1ed0aa02fcef522c38deecac90c5429a19ee31c1d3eac6bf10f3e7e9cd3439891c949f5d2763bf2463d7bcdab6f90
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Filesize
400.0MB
MD581e0872e2be9487534ddd879b05e6f62
SHA1f97c783cb79036a9f2ff27e70a182f1b6919da18
SHA256d54df888565db74fd2065bfa327e5b5d2476df10564a25f2b99f3bf7f9504ab0
SHA51240bfff8cb99869510332a8f2c4f62a354de1ed0aa02fcef522c38deecac90c5429a19ee31c1d3eac6bf10f3e7e9cd3439891c949f5d2763bf2463d7bcdab6f90
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Filesize
400.0MB
MD581e0872e2be9487534ddd879b05e6f62
SHA1f97c783cb79036a9f2ff27e70a182f1b6919da18
SHA256d54df888565db74fd2065bfa327e5b5d2476df10564a25f2b99f3bf7f9504ab0
SHA51240bfff8cb99869510332a8f2c4f62a354de1ed0aa02fcef522c38deecac90c5429a19ee31c1d3eac6bf10f3e7e9cd3439891c949f5d2763bf2463d7bcdab6f90
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Filesize
104B
MD54f3bde9212e17ef18226866d6ac739b6
SHA1732733bec8314beb81437e60876ffa75e72ae6cd
SHA256212173a405c78d70f90e8ec0699a60ed2f4a9f3a8070de62eabd666c268fb174
SHA51210b7cdae0b9a7b0f8e1bfc66a60675fa9b25c523864d5ae3da243f4e6e4c5194f3bd92af57ac956157442f66414bdd3393d0a1e5ba4ef0f192561e8524d4e744
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Filesize
104B
MD5bf5da170f7c9a8eae88d1cb1a191ff80
SHA1dd1b991a1b03587a5d1edc94e919a2070e325610
SHA256e5d5110feb21939d82d962981aeaaafc4643b40a9b87cbed800ace82135d57cd
SHA5129e32247d8556fd6efffbf7b6b9c325652d8c4b223b0fa38020879171476a49ab1f64d8897b5d8d92b79c5484fd9d5899be26ca5f664ee1f9c2acb0857084121e
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Filesize
793KB
MD586114faba7e1ec4a667d2bcb2e23f024
SHA1670df6e1ba1dc6bece046e8b2e573dd36748245e
SHA256568da887725ccfdc4c5aae3ff66792fe60eca4e0818338f6a8434be66a6fe46d
SHA512d26ee0da6ccd4022982cf848c46e40f6781b667e39d0c5daf5ea8d74c44e55c55a5f7590a4d2a60aa1911358ca783c4276a9b4e6311c4cea20df1ebd4f7f457f
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Filesize
793KB
MD586114faba7e1ec4a667d2bcb2e23f024
SHA1670df6e1ba1dc6bece046e8b2e573dd36748245e
SHA256568da887725ccfdc4c5aae3ff66792fe60eca4e0818338f6a8434be66a6fe46d
SHA512d26ee0da6ccd4022982cf848c46e40f6781b667e39d0c5daf5ea8d74c44e55c55a5f7590a4d2a60aa1911358ca783c4276a9b4e6311c4cea20df1ebd4f7f457f