Analysis
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max time kernel
144s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
30-03-2023 13:07
Static task
static1
Behavioral task
behavioral1
Sample
New PO #23546738.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
New PO #23546738.exe
Resource
win10v2004-20230220-en
General
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Target
New PO #23546738.exe
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Size
707KB
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MD5
80c0b9e8a00242d0fb960584d89d745e
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SHA1
fb6bb9c955f030eb906e532813f7c7c6102ec55e
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SHA256
0a8368bab522deb622eca5805bc7bc6da0d4a6a63fae959c41c22c7d0b5ffa63
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SHA512
539017fd581d853b9e369eea90447001b08eb816948b3ab45fc9b082cfaaf65f1bb4b3af6cefb22bb1aae3190917ef47d41ce4c1794d546c2e023b628c6d3a71
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SSDEEP
12288:l3B2nTxM9+/nT92EiggkPIYP1QF7MKqv27bYyywV37Zb:lSbT92E8kPT1QFJ22GwVrF
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
olu chu kwu 554 - 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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
New PO #23546738.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation New PO #23546738.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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
New PO #23546738.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 New PO #23546738.exe Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 New PO #23546738.exe Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 New PO #23546738.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 31 api.ipify.org 32 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
New PO #23546738.exedescription pid process target process PID 1976 set thread context of 4912 1976 New PO #23546738.exe New PO #23546738.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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 3 IoCs
Processes:
New PO #23546738.exepid process 1976 New PO #23546738.exe 1976 New PO #23546738.exe 1976 New PO #23546738.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
New PO #23546738.exeNew PO #23546738.exedescription pid process Token: SeDebugPrivilege 1976 New PO #23546738.exe Token: SeDebugPrivilege 4912 New PO #23546738.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
New PO #23546738.exedescription pid process target process PID 1976 wrote to memory of 5032 1976 New PO #23546738.exe schtasks.exe PID 1976 wrote to memory of 5032 1976 New PO #23546738.exe schtasks.exe PID 1976 wrote to memory of 5032 1976 New PO #23546738.exe schtasks.exe PID 1976 wrote to memory of 1920 1976 New PO #23546738.exe New PO #23546738.exe PID 1976 wrote to memory of 1920 1976 New PO #23546738.exe New PO #23546738.exe PID 1976 wrote to memory of 1920 1976 New PO #23546738.exe New PO #23546738.exe PID 1976 wrote to memory of 4912 1976 New PO #23546738.exe New PO #23546738.exe PID 1976 wrote to memory of 4912 1976 New PO #23546738.exe New PO #23546738.exe PID 1976 wrote to memory of 4912 1976 New PO #23546738.exe New PO #23546738.exe PID 1976 wrote to memory of 4912 1976 New PO #23546738.exe New PO #23546738.exe PID 1976 wrote to memory of 4912 1976 New PO #23546738.exe New PO #23546738.exe PID 1976 wrote to memory of 4912 1976 New PO #23546738.exe New PO #23546738.exe PID 1976 wrote to memory of 4912 1976 New PO #23546738.exe New PO #23546738.exe PID 1976 wrote to memory of 4912 1976 New PO #23546738.exe New PO #23546738.exe -
outlook_office_path 1 IoCs
Processes:
New PO #23546738.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 New PO #23546738.exe -
outlook_win_path 1 IoCs
Processes:
New PO #23546738.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 New PO #23546738.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\New PO #23546738.exe"C:\Users\Admin\AppData\Local\Temp\New PO #23546738.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1976 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YJmfGxcN" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF6C8.tmp"2⤵
- Creates scheduled task(s)
PID:5032 -
C:\Users\Admin\AppData\Local\Temp\New PO #23546738.exe"{path}"2⤵PID:1920
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C:\Users\Admin\AppData\Local\Temp\New PO #23546738.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4912
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpF6C8.tmpFilesize
1KB
MD57822eb5839a11da3115a8f648f6f4223
SHA10b46363c00e7560a3aee0ef8c531006f3c5a43cb
SHA2566ce9d00dbed5b8504b549b6fc355ebee806ead3fb5808542a222f7a3a3ed7786
SHA5126ae53f1ff74767f90dc5d836d6b50dda5a27d3d7c242e3445e13ee485f402ae5451a1b254930d79a45983f1b6c9fda285f834c5176710fc49213b8c63a693c4c
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memory/1976-139-0x00000000052C0000-0x0000000005316000-memory.dmpFilesize
344KB
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memory/1976-134-0x0000000004FB0000-0x000000000504C000-memory.dmpFilesize
624KB
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memory/1976-136-0x0000000005050000-0x00000000050E2000-memory.dmpFilesize
584KB
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memory/1976-137-0x00000000052B0000-0x00000000052C0000-memory.dmpFilesize
64KB
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memory/1976-138-0x0000000004F70000-0x0000000004F7A000-memory.dmpFilesize
40KB
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memory/1976-133-0x0000000000540000-0x00000000005F6000-memory.dmpFilesize
728KB
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memory/1976-140-0x00000000052B0000-0x00000000052C0000-memory.dmpFilesize
64KB
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memory/1976-135-0x0000000005600000-0x0000000005BA4000-memory.dmpFilesize
5.6MB
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memory/4912-144-0x0000000000400000-0x0000000000430000-memory.dmpFilesize
192KB
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memory/4912-146-0x0000000005810000-0x0000000005876000-memory.dmpFilesize
408KB
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memory/4912-147-0x0000000005AA0000-0x0000000005AB0000-memory.dmpFilesize
64KB
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memory/4912-148-0x0000000007300000-0x0000000007350000-memory.dmpFilesize
320KB
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memory/4912-149-0x0000000007520000-0x00000000076E2000-memory.dmpFilesize
1.8MB
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memory/4912-150-0x0000000005AA0000-0x0000000005AB0000-memory.dmpFilesize
64KB