Analysis
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max time kernel
143s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
04-12-2023 19:10
Static task
static1
Behavioral task
behavioral1
Sample
Doc0750012xls.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
Doc0750012xls.exe
Resource
win10v2004-20231127-en
General
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Target
Doc0750012xls.exe
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Size
130KB
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MD5
1f5e3fcbdd05b2d7975bdba2c9397142
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SHA1
b98fa7f58a059e2b136ac22b78b23da2fe0d78e3
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SHA256
644a614093e652cd1f25a25e72479b6a50c3075cbf557a0549600bdbc521c3a3
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SHA512
1bcc5627f281e4b4ffcc7f468b92d03afff4dfc2b66d7f70fd04380ec20a7c2bf1a6a3c7dca474f273c2f4c245b4760c490fb24468f0a0627a08c17526006dbf
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SSDEEP
1536:B5rFV5vpLIr56x6UkUPmxSQNrjxsM0F48t6A3htV:B5xtLheUuxSJF492V
Malware Config
Extracted
Protocol: smtp- Host:
server1.sqsendy.shop - Port:
587 - Username:
[email protected] - Password:
(;1q-5*CoN.3
Extracted
agenttesla
Protocol: smtp- Host:
server1.sqsendy.shop - Port:
587 - Username:
[email protected] - Password:
(;1q-5*CoN.3 - 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:
Doc0750012xls.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3028534956-1709433221-1313273668-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mrkysfxlla = "C:\\Users\\Admin\\AppData\\Roaming\\Mrkysfxlla.exe" Doc0750012xls.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 46 ip-api.com 44 api.ipify.org 45 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Doc0750012xls.exedescription pid process target process PID 3048 set thread context of 4912 3048 Doc0750012xls.exe Doc0750012xls.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
Doc0750012xls.exepid process 4912 Doc0750012xls.exe 4912 Doc0750012xls.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Doc0750012xls.exeDoc0750012xls.exedescription pid process Token: SeDebugPrivilege 3048 Doc0750012xls.exe Token: SeDebugPrivilege 4912 Doc0750012xls.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
Doc0750012xls.exedescription pid process target process PID 3048 wrote to memory of 4912 3048 Doc0750012xls.exe Doc0750012xls.exe PID 3048 wrote to memory of 4912 3048 Doc0750012xls.exe Doc0750012xls.exe PID 3048 wrote to memory of 4912 3048 Doc0750012xls.exe Doc0750012xls.exe PID 3048 wrote to memory of 4912 3048 Doc0750012xls.exe Doc0750012xls.exe PID 3048 wrote to memory of 4912 3048 Doc0750012xls.exe Doc0750012xls.exe PID 3048 wrote to memory of 4912 3048 Doc0750012xls.exe Doc0750012xls.exe PID 3048 wrote to memory of 4912 3048 Doc0750012xls.exe Doc0750012xls.exe PID 3048 wrote to memory of 4912 3048 Doc0750012xls.exe Doc0750012xls.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Doc0750012xls.exe"C:\Users\Admin\AppData\Local\Temp\Doc0750012xls.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3048 -
C:\Users\Admin\AppData\Local\Temp\Doc0750012xls.exeC:\Users\Admin\AppData\Local\Temp\Doc0750012xls.exe2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4912
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD58c2da65103d6b46d8cf610b118210cf0
SHA19db4638340bb74f2af3161cc2c9c0b8b32e6ab65
SHA2560e48e2efd419951e0eb9a8d942493cfdf5540d1d19ff9dae6f145fb3ebcbeeac
SHA5123cf5a125276e264cd8478f2b92d3848fb68b96d46eb4a39e650d09df02068c274881a1c314cdfbfdcb452672fb70dd8becf3ffe9562d39919d9c4d6b07fbb614