Analysis
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max time kernel
144s -
max time network
50s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 12:45
Static task
static1
Behavioral task
behavioral1
Sample
Receipt.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
Receipt.exe
Resource
win10v2004-20220414-en
General
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Target
Receipt.exe
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Size
5.1MB
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MD5
4d37240c2a9aab1b8dfd0aee7d418adc
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SHA1
fb684fe749432d7fb74e95a26f6614362c9b26b2
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SHA256
9013e308218b70c038971d37c9ab446b81108079344e71f25e1d131487657c97
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SHA512
5e84c6ff15e51d044c68b01b371b94a00d9d3806ff3bb9cad2aa4446f0f14c79cd95228f13601b88b980152eb4c85f9c0a65eed09034489062d68e93afd7d5ea
Malware Config
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 6 IoCs
Processes:
resource yara_rule behavioral1/memory/1676-66-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla behavioral1/memory/1676-67-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla behavioral1/memory/1676-68-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla behavioral1/memory/1676-69-0x000000000044B84E-mapping.dmp family_agenttesla behavioral1/memory/1676-72-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla behavioral1/memory/1676-74-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla -
Executes dropped EXE 2 IoCs
Processes:
bvn.exeRegAsm.exepid process 848 bvn.exe 1676 RegAsm.exe -
Loads dropped DLL 2 IoCs
Processes:
bvn.exeRegAsm.exepid process 848 bvn.exe 1676 RegAsm.exe -
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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
reg.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\cash = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\Desktop\\bvn.exe" reg.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
bvn.exedescription pid process target process PID 848 set thread context of 1676 848 bvn.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 7 IoCs
Processes:
Receipt.exebvn.exeRegAsm.exepid process 1660 Receipt.exe 1660 Receipt.exe 848 bvn.exe 848 bvn.exe 848 bvn.exe 1676 RegAsm.exe 1676 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
Receipt.exebvn.exeRegAsm.exedescription pid process Token: SeDebugPrivilege 1660 Receipt.exe Token: SeDebugPrivilege 848 bvn.exe Token: SeDebugPrivilege 1676 RegAsm.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RegAsm.exepid process 1676 RegAsm.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
Receipt.execmd.exebvn.exedescription pid process target process PID 1660 wrote to memory of 912 1660 Receipt.exe cmd.exe PID 1660 wrote to memory of 912 1660 Receipt.exe cmd.exe PID 1660 wrote to memory of 912 1660 Receipt.exe cmd.exe PID 1660 wrote to memory of 912 1660 Receipt.exe cmd.exe PID 912 wrote to memory of 1004 912 cmd.exe reg.exe PID 912 wrote to memory of 1004 912 cmd.exe reg.exe PID 912 wrote to memory of 1004 912 cmd.exe reg.exe PID 912 wrote to memory of 1004 912 cmd.exe reg.exe PID 1660 wrote to memory of 848 1660 Receipt.exe bvn.exe PID 1660 wrote to memory of 848 1660 Receipt.exe bvn.exe PID 1660 wrote to memory of 848 1660 Receipt.exe bvn.exe PID 1660 wrote to memory of 848 1660 Receipt.exe bvn.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe PID 848 wrote to memory of 1676 848 bvn.exe RegAsm.exe -
outlook_office_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
outlook_win_path 1 IoCs
Processes:
RegAsm.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Receipt.exe"C:\Users\Admin\AppData\Local\Temp\Receipt.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v cash /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Desktop\bvn.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v cash /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Desktop\bvn.exe"3⤵
- Adds Run key to start application
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C:\Users\Admin\Desktop\bvn.exe"C:\Users\Admin\Desktop\bvn.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\RegAsm.exeFilesize
63KB
MD5b58b926c3574d28d5b7fdd2ca3ec30d5
SHA1d260c4ffd603a9cfc057fcb83d678b1cecdf86f9
SHA2566e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3
SHA512b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab
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C:\Users\Admin\AppData\Local\Temp\RegAsm.exeFilesize
63KB
MD5b58b926c3574d28d5b7fdd2ca3ec30d5
SHA1d260c4ffd603a9cfc057fcb83d678b1cecdf86f9
SHA2566e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3
SHA512b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab
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C:\Users\Admin\Desktop\bvn.exeFilesize
5.1MB
MD54d37240c2a9aab1b8dfd0aee7d418adc
SHA1fb684fe749432d7fb74e95a26f6614362c9b26b2
SHA2569013e308218b70c038971d37c9ab446b81108079344e71f25e1d131487657c97
SHA5125e84c6ff15e51d044c68b01b371b94a00d9d3806ff3bb9cad2aa4446f0f14c79cd95228f13601b88b980152eb4c85f9c0a65eed09034489062d68e93afd7d5ea
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C:\Users\Admin\Desktop\bvn.exeFilesize
5.1MB
MD54d37240c2a9aab1b8dfd0aee7d418adc
SHA1fb684fe749432d7fb74e95a26f6614362c9b26b2
SHA2569013e308218b70c038971d37c9ab446b81108079344e71f25e1d131487657c97
SHA5125e84c6ff15e51d044c68b01b371b94a00d9d3806ff3bb9cad2aa4446f0f14c79cd95228f13601b88b980152eb4c85f9c0a65eed09034489062d68e93afd7d5ea
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\Users\Admin\AppData\Local\Temp\RegAsm.exeFilesize
63KB
MD5b58b926c3574d28d5b7fdd2ca3ec30d5
SHA1d260c4ffd603a9cfc057fcb83d678b1cecdf86f9
SHA2566e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3
SHA512b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab
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\Users\Admin\AppData\Local\Temp\RegAsm.exeFilesize
63KB
MD5b58b926c3574d28d5b7fdd2ca3ec30d5
SHA1d260c4ffd603a9cfc057fcb83d678b1cecdf86f9
SHA2566e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3
SHA512b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab
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memory/848-57-0x0000000000000000-mapping.dmp
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memory/848-60-0x0000000001090000-0x00000000015A6000-memory.dmpFilesize
5.1MB
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memory/912-55-0x0000000000000000-mapping.dmp
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memory/1004-56-0x0000000000000000-mapping.dmp
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memory/1660-54-0x0000000001070000-0x0000000001586000-memory.dmpFilesize
5.1MB
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memory/1676-67-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1676-66-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1676-68-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1676-69-0x000000000044B84E-mapping.dmp
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memory/1676-64-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1676-72-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1676-74-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1676-75-0x0000000076781000-0x0000000076783000-memory.dmpFilesize
8KB
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memory/1676-63-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB