General
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Target
ba3b06fa86dbb5d8cb8ba41be9eb4c8c357338cda9afcf2b822bd2ff5cb0d873
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Size
502KB
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Sample
240612-btb4naxfkk
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MD5
0c36f06b86cc3cebc4b980dce681fcb8
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SHA1
2d67c331ee7a015c71efccd3aa986df04376694e
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SHA256
ba3b06fa86dbb5d8cb8ba41be9eb4c8c357338cda9afcf2b822bd2ff5cb0d873
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SHA512
66d8e4d406fb828de69f5cd366fc67e13a139efd9d56c8ea883a85e5b6fae6a9ca8ca9a4aab600a77d4de6e0d4126dc07b55d3959aa69f599baaa8b8cba2dea9
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SSDEEP
12288:ANp16BVEv5EgTskYprJuPFVEcGaS3iofpgLyFpoEKpSSlEF:2ABVEv5EFrcUcjS3iofqLyFKrpSSs
Static task
static1
Behavioral task
behavioral1
Sample
Orden#46789_2024_Optoflux_mexico_sderlss.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
Orden#46789_2024_Optoflux_mexico_sderlss.exe
Resource
win10v2004-20240508-en
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.zoho.eu - Port:
587 - Username:
[email protected] - Password:
office12# - Email To:
[email protected]
Targets
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Target
Orden#46789_2024_Optoflux_mexico_sderlss.exe
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Size
861KB
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MD5
af0dccdcac71a9ec9395bbac08c232a8
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SHA1
c9647a1d282db7ed314af4c17a86dc5d92f752dc
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SHA256
a8726088fffcb88c32528d617d58d5c0d028c28115842f0c2a4f7a7fe5192e82
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SHA512
554ab8af23e8b9438f7d89191c3dee457e80f93202d55bd0cdb80be3cf94c25a1d0f8464c51b274aa55ca67ed34c672f25fb0b6e10791c33ab54ead27e1cd333
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SSDEEP
12288:z1I6SaGRIuDJpW2YwPUqw2yK1WHV+m/SIo6I6JT/sudfpdCcqXQ:nEpIaY/smfXCcsQ
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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
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext
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