Analysis
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max time kernel
150s -
max time network
61s -
platform
windows7_x64 -
resource
win7 -
submitted
13-07-2020 11:41
Static task
static1
Behavioral task
behavioral1
Sample
Dekont.exe
Resource
win7
Behavioral task
behavioral2
Sample
Dekont.exe
Resource
win10v200430
General
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Target
Dekont.exe
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Size
771KB
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MD5
e6e0c9a9a19145589f731d7380544b97
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SHA1
16c015e77df27881bfd08e50a2e1257ddbec8503
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SHA256
8f560b247ad96f57de4e2f6da3d99af31a7ac8478e560c6fbfaa1d3615e65575
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SHA512
07ce4fd45b62a2a2fc07527c16b869fe86ab0c5081cbae77a79301d368b456a6607880d3a6d28adbc74f2a5c5f2c4f263eeb87f84e65e220c934d82fb952b31a
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.decoplanet.net - Port:
587 - Username:
[email protected] - Password:
ayla1939
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 7 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Roaming\application.exe family_agenttesla C:\Users\Admin\AppData\Roaming\application.exe family_agenttesla C:\Users\Admin\AppData\Roaming\application.exe family_agenttesla behavioral1/memory/1916-17-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1916-18-0x0000000000446EBE-mapping.dmp family_agenttesla behavioral1/memory/1916-20-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1916-22-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
Executes dropped EXE 2 IoCs
Processes:
application.exeInstallUtil.exepid process 1796 application.exe 1916 InstallUtil.exe -
Loads dropped DLL 2 IoCs
Processes:
Dekont.exeapplication.exepid process 616 Dekont.exe 1796 application.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 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 2 IoCs
Processes:
reg.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\application = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\application.exe" reg.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
application.exedescription pid process target process PID 1796 set thread context of 1916 1796 application.exe InstallUtil.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 8 IoCs
Processes:
Dekont.exeapplication.exeInstallUtil.exepid process 616 Dekont.exe 616 Dekont.exe 616 Dekont.exe 1796 application.exe 1796 application.exe 1796 application.exe 1916 InstallUtil.exe 1916 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
Dekont.exeapplication.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 616 Dekont.exe Token: SeDebugPrivilege 1796 application.exe Token: SeDebugPrivilege 1916 InstallUtil.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
Dekont.execmd.exeapplication.exedescription pid process target process PID 616 wrote to memory of 748 616 Dekont.exe cmd.exe PID 616 wrote to memory of 748 616 Dekont.exe cmd.exe PID 616 wrote to memory of 748 616 Dekont.exe cmd.exe PID 616 wrote to memory of 748 616 Dekont.exe cmd.exe PID 748 wrote to memory of 1644 748 cmd.exe reg.exe PID 748 wrote to memory of 1644 748 cmd.exe reg.exe PID 748 wrote to memory of 1644 748 cmd.exe reg.exe PID 748 wrote to memory of 1644 748 cmd.exe reg.exe PID 616 wrote to memory of 1796 616 Dekont.exe application.exe PID 616 wrote to memory of 1796 616 Dekont.exe application.exe PID 616 wrote to memory of 1796 616 Dekont.exe application.exe PID 616 wrote to memory of 1796 616 Dekont.exe application.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe PID 1796 wrote to memory of 1916 1796 application.exe InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Dekont.exe"C:\Users\Admin\AppData\Local\Temp\Dekont.exe"1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:616 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v application /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\application.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:748 -
C:\Windows\SysWOW64\reg.exeREG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v application /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\application.exe"3⤵
- Adds Run key to start application
PID:1644 -
C:\Users\Admin\AppData\Roaming\application.exe"C:\Users\Admin\AppData\Roaming\application.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1796 -
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1916
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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MD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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MD5
e6e0c9a9a19145589f731d7380544b97
SHA116c015e77df27881bfd08e50a2e1257ddbec8503
SHA2568f560b247ad96f57de4e2f6da3d99af31a7ac8478e560c6fbfaa1d3615e65575
SHA51207ce4fd45b62a2a2fc07527c16b869fe86ab0c5081cbae77a79301d368b456a6607880d3a6d28adbc74f2a5c5f2c4f263eeb87f84e65e220c934d82fb952b31a
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MD5
e6e0c9a9a19145589f731d7380544b97
SHA116c015e77df27881bfd08e50a2e1257ddbec8503
SHA2568f560b247ad96f57de4e2f6da3d99af31a7ac8478e560c6fbfaa1d3615e65575
SHA51207ce4fd45b62a2a2fc07527c16b869fe86ab0c5081cbae77a79301d368b456a6607880d3a6d28adbc74f2a5c5f2c4f263eeb87f84e65e220c934d82fb952b31a
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MD5
91c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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MD5
e6e0c9a9a19145589f731d7380544b97
SHA116c015e77df27881bfd08e50a2e1257ddbec8503
SHA2568f560b247ad96f57de4e2f6da3d99af31a7ac8478e560c6fbfaa1d3615e65575
SHA51207ce4fd45b62a2a2fc07527c16b869fe86ab0c5081cbae77a79301d368b456a6607880d3a6d28adbc74f2a5c5f2c4f263eeb87f84e65e220c934d82fb952b31a