General
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Target
SecuriteInfo.com.Trojan.DownLoaderNET.495.22282.26470.exe
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Size
9KB
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Sample
221103-rjd39sbbh4
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MD5
fd3c284eb862dfd89e4ea9c3188184b0
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SHA1
99b066e1b2bb568fb6d1813a2e06970cf164aec1
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SHA256
491c807f26e695af9ea8cb18cfbee96446d4f6703f774269a36cd887561dae8d
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SHA512
3a455fbd2dda97ee0afdbe55c4fc0f08aa2444c9a246d5b8f44709b276abf52fee7f9285099314b0afa4cedac194effe5d6d9e9c9255c31c95a1dc6c31571e74
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SSDEEP
192:K0E+Ig32cL1UuZRSrTW/2c8stYcFmVc03KY:K0E+Ig32cLWISrTWOcptYcFmVc03K
Static task
static1
Behavioral task
behavioral1
Sample
SecuriteInfo.com.Trojan.DownLoaderNET.495.22282.26470.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
SecuriteInfo.com.Trojan.DownLoaderNET.495.22282.26470.exe
Resource
win10v2004-20220812-en
Malware Config
Extracted
quasar
1.3.0.0
Nov
37.139.128.94:5000
QSR_MUTEX_eZnYtXesrHquJP9u21
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encryption_key
cnjVAVdqAEtq3rq2N0WD
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Targets
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Target
SecuriteInfo.com.Trojan.DownLoaderNET.495.22282.26470.exe
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Size
9KB
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MD5
fd3c284eb862dfd89e4ea9c3188184b0
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SHA1
99b066e1b2bb568fb6d1813a2e06970cf164aec1
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SHA256
491c807f26e695af9ea8cb18cfbee96446d4f6703f774269a36cd887561dae8d
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SHA512
3a455fbd2dda97ee0afdbe55c4fc0f08aa2444c9a246d5b8f44709b276abf52fee7f9285099314b0afa4cedac194effe5d6d9e9c9255c31c95a1dc6c31571e74
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SSDEEP
192:K0E+Ig32cL1UuZRSrTW/2c8stYcFmVc03KY:K0E+Ig32cLWISrTWOcptYcFmVc03K
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Quasar payload
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Executes dropped EXE
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Loads dropped DLL
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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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