Analysis
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max time kernel
119s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
28-04-2024 01:40
Static task
static1
Behavioral task
behavioral1
Sample
BL copy PDF.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
BL copy PDF.exe
Resource
win10v2004-20240419-en
General
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Target
BL copy PDF.exe
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Size
822KB
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MD5
5a12438b3b4c926c12a9376c7bf13426
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SHA1
c3185c6a5e5f07a5befbe4af7131d05634f5d1a3
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SHA256
1a794211deaa0ecb6abc6101d7c1bd61111b4dd2d895ee7ecf78fbf17f4c9ab3
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SHA512
16c1e0e18eb8b3345b8b05443b782cb1dd35492ac986811c39f3cdce8dfe85b003aba029ffca0e38aa33c951d0d08281825152b0e239471eac3de18ac67864d0
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SSDEEP
12288:tEqnHvjNIrpf9rN/mc/CaBmIwsyaPSIir97G6NLOZCGKEgbjuPBB5uO12rq:txPjKr5BNDWVxcSIiRG6atlB5N
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.fascia-arch.com - Port:
587 - Username:
[email protected] - Password:
HERbertstown1987 - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
BL copy PDF.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\BjTxJte = "C:\\Users\\Admin\\AppData\\Roaming\\BjTxJte\\BjTxJte.exe" BL copy PDF.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 api.ipify.org 5 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
BL copy PDF.exedescription pid process target process PID 2928 set thread context of 2996 2928 BL copy PDF.exe BL copy PDF.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 behavior: EnumeratesProcesses 7 IoCs
Processes:
BL copy PDF.exeBL copy PDF.exepowershell.exepowershell.exepid process 2928 BL copy PDF.exe 2928 BL copy PDF.exe 2928 BL copy PDF.exe 2996 BL copy PDF.exe 2996 BL copy PDF.exe 2728 powershell.exe 2128 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
BL copy PDF.exeBL copy PDF.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 2928 BL copy PDF.exe Token: SeDebugPrivilege 2996 BL copy PDF.exe Token: SeDebugPrivilege 2728 powershell.exe Token: SeDebugPrivilege 2128 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
BL copy PDF.exepid process 2996 BL copy PDF.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
BL copy PDF.exedescription pid process target process PID 2928 wrote to memory of 2128 2928 BL copy PDF.exe powershell.exe PID 2928 wrote to memory of 2128 2928 BL copy PDF.exe powershell.exe PID 2928 wrote to memory of 2128 2928 BL copy PDF.exe powershell.exe PID 2928 wrote to memory of 2128 2928 BL copy PDF.exe powershell.exe PID 2928 wrote to memory of 2728 2928 BL copy PDF.exe powershell.exe PID 2928 wrote to memory of 2728 2928 BL copy PDF.exe powershell.exe PID 2928 wrote to memory of 2728 2928 BL copy PDF.exe powershell.exe PID 2928 wrote to memory of 2728 2928 BL copy PDF.exe powershell.exe PID 2928 wrote to memory of 2600 2928 BL copy PDF.exe schtasks.exe PID 2928 wrote to memory of 2600 2928 BL copy PDF.exe schtasks.exe PID 2928 wrote to memory of 2600 2928 BL copy PDF.exe schtasks.exe PID 2928 wrote to memory of 2600 2928 BL copy PDF.exe schtasks.exe PID 2928 wrote to memory of 2996 2928 BL copy PDF.exe BL copy PDF.exe PID 2928 wrote to memory of 2996 2928 BL copy PDF.exe BL copy PDF.exe PID 2928 wrote to memory of 2996 2928 BL copy PDF.exe BL copy PDF.exe PID 2928 wrote to memory of 2996 2928 BL copy PDF.exe BL copy PDF.exe PID 2928 wrote to memory of 2996 2928 BL copy PDF.exe BL copy PDF.exe PID 2928 wrote to memory of 2996 2928 BL copy PDF.exe BL copy PDF.exe PID 2928 wrote to memory of 2996 2928 BL copy PDF.exe BL copy PDF.exe PID 2928 wrote to memory of 2996 2928 BL copy PDF.exe BL copy PDF.exe PID 2928 wrote to memory of 2996 2928 BL copy PDF.exe BL copy PDF.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\BL copy PDF.exe"C:\Users\Admin\AppData\Local\Temp\BL copy PDF.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" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\BL copy PDF.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CmxzrHBB.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CmxzrHBB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp40C8.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\BL copy PDF.exe"C:\Users\Admin\AppData\Local\Temp\BL copy PDF.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v13
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp40C8.tmpFilesize
1KB
MD5a351be93d764fb87c712ab5921235f3d
SHA1a2ba73db945c05802db324a9f4a5f0384a26feab
SHA256a6bda8df90a60518ad4f70efdf00b1c47b426d9fe2535a578982ba743a6f902d
SHA512fb6d6b771dbf71aa8bc414e926b3797e67f18b2a8d2047437ef0f5c3e5c802e1b4a76fda4f9573eb149a31d9e81a860fd7d71b3757e66d3b76b8fc0d9f1a6023
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\ZBFSU8W5MT0CA3AJLII6.tempFilesize
7KB
MD5ded9601cebabe199ade0c6d7cf5f9f69
SHA198acc75c684903c8c9c813653e253dad2aeed7b5
SHA25607070d1d3093cd19ba837a4694d15916790eca8f14df471ffff5b3d768691444
SHA512aa62b1a6cd582ed52b9257003f344e562cb6db3670a2f017456e5f7bf2de290740dc7f6ad845089657cf6a7d541129535d7e651feb69aabeb5e37a99ce549fcb
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memory/2928-31-0x0000000074A50000-0x000000007513E000-memory.dmpFilesize
6.9MB
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memory/2928-1-0x0000000074A50000-0x000000007513E000-memory.dmpFilesize
6.9MB
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memory/2928-2-0x0000000000AF0000-0x0000000000B30000-memory.dmpFilesize
256KB
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memory/2928-3-0x0000000000AC0000-0x0000000000AE0000-memory.dmpFilesize
128KB
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memory/2928-4-0x0000000000B40000-0x0000000000B54000-memory.dmpFilesize
80KB
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memory/2928-5-0x00000000058A0000-0x0000000005924000-memory.dmpFilesize
528KB
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memory/2928-0-0x0000000000D70000-0x0000000000E44000-memory.dmpFilesize
848KB
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memory/2996-20-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/2996-30-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/2996-28-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/2996-27-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/2996-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmpFilesize
4KB
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memory/2996-24-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/2996-22-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/2996-18-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB