General
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Target
tmp
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Size
25KB
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Sample
230223-slr9caab3w
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MD5
30b5426ee9183f43fba9a8a6b6b32b97
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SHA1
d0b8cde6d8c38e294ce6275b0f935677b07d2202
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SHA256
e18cf6502122b168dac6c932cd89739e313154ee9b73d6ddd692d4ad990aceb0
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SHA512
adef79c0748b1e8c274f93879c1c068e0d54b88de94fbb01d4d51bd222a6493f8d2cc68f53adab5407bd59249dfa2fdbc8f511bbec3613772591b0ea4d79afaf
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SSDEEP
96:jFQgbeIBVLyrgoJ/sTfNILBevmXR5MMRWnwLoLEk8LfjNiRB4e3T3ew5tvEzNt:jFhyIaUo/sTfNILwEfdRTLat8LLGTvu
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20230220-en
Malware Config
Extracted
purecrypter
http://argentum.com.br/well-known/acme-challenge/k/h/d/g/Pjogwzrhh.bmp
http://argentum.com.br/well-known/acme-challenge/k/h/d/g/Xzcrd.png
Targets
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Target
tmp
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Size
25KB
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MD5
30b5426ee9183f43fba9a8a6b6b32b97
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SHA1
d0b8cde6d8c38e294ce6275b0f935677b07d2202
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SHA256
e18cf6502122b168dac6c932cd89739e313154ee9b73d6ddd692d4ad990aceb0
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SHA512
adef79c0748b1e8c274f93879c1c068e0d54b88de94fbb01d4d51bd222a6493f8d2cc68f53adab5407bd59249dfa2fdbc8f511bbec3613772591b0ea4d79afaf
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SSDEEP
96:jFQgbeIBVLyrgoJ/sTfNILBevmXR5MMRWnwLoLEk8LfjNiRB4e3T3ew5tvEzNt:jFhyIaUo/sTfNILwEfdRTLat8LLGTvu
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Detects Smokeloader packer
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PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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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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Accesses Microsoft Outlook profiles
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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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