Analysis
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max time kernel
104s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system -
submitted
08-12-2023 14:06
Static task
static1
Behavioral task
behavioral1
Sample
FACTURAS.js
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
FACTURAS.js
Resource
win10v2004-20231130-en
General
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Target
FACTURAS.js
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Size
944B
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MD5
25d05d7da40ef51ff088cfbd3746a74f
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SHA1
3c08a86611c54e2bcb77f45f12442d271b5d806c
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SHA256
4040480a88c5deea6892453bf0b1cd86d29b879f00f04bce1b8739e0f08290cc
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SHA512
903489a9cb106d4bef03ad0073015a6007743331616facd49e36ce4661076c1e013191abd613308c6801890987b317af2483d974d8b694a21f0cee2cbcf5469e
Malware Config
Extracted
agenttesla
https://api.telegram.org/bot6846062945:AAGabPi9vxKPIKfVbRT2fLEd-Rnu3DtD_6I/
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Blocklisted process makes network request 4 IoCs
flow pid Process 5 4992 wscript.exe 9 4992 wscript.exe 18 4992 wscript.exe 20 4992 wscript.exe -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Control Panel\International\Geo\Nation wscript.exe -
Executes dropped EXE 1 IoCs
pid Process 2380 FACTURAS.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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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 53 api.ipify.org 54 api.ipify.org -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2380 FACTURAS.exe 2380 FACTURAS.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2380 FACTURAS.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4992 wrote to memory of 2380 4992 wscript.exe 92 PID 4992 wrote to memory of 2380 4992 wscript.exe 92 PID 4992 wrote to memory of 2380 4992 wscript.exe 92
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\FACTURAS.js1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4992 -
C:\Users\Admin\AppData\Roaming\FACTURAS.exe"C:\Users\Admin\AppData\Roaming\FACTURAS.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2380
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
244KB
MD582b1416c0fcf97ac7aae6c308dde69c8
SHA1df4775ea8402c5dd06a024c81be735a567ce5d2d
SHA256727ba9875751b31232339f91003c267e9e80631e908e84b05d05960c85d18184
SHA512bea12f70ef9309af2e2093b816ef1daf5096c03ec5492d962ba80fcd8f775451206b8cc3e869144c7a104801ab65e3b8d156829fa7e2580763aa564e38f67a9b
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Filesize
244KB
MD582b1416c0fcf97ac7aae6c308dde69c8
SHA1df4775ea8402c5dd06a024c81be735a567ce5d2d
SHA256727ba9875751b31232339f91003c267e9e80631e908e84b05d05960c85d18184
SHA512bea12f70ef9309af2e2093b816ef1daf5096c03ec5492d962ba80fcd8f775451206b8cc3e869144c7a104801ab65e3b8d156829fa7e2580763aa564e38f67a9b
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Filesize
244KB
MD582b1416c0fcf97ac7aae6c308dde69c8
SHA1df4775ea8402c5dd06a024c81be735a567ce5d2d
SHA256727ba9875751b31232339f91003c267e9e80631e908e84b05d05960c85d18184
SHA512bea12f70ef9309af2e2093b816ef1daf5096c03ec5492d962ba80fcd8f775451206b8cc3e869144c7a104801ab65e3b8d156829fa7e2580763aa564e38f67a9b