Resubmissions
03/02/2025, 21:57 UTC
250203-1t5hmsvmat 1003/02/2025, 04:37 UTC
250203-e896saslgn 1031/01/2025, 18:35 UTC
250131-w8gmxatmc1 10Analysis
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max time kernel
126s -
max time network
137s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
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submitted
31/01/2025, 18:35 UTC
General
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Target
bazaar.2020.02/Trojan.MSIL.Agent.exe
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Size
347KB
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MD5
b2b351958075d91039a2e47203a3c9a0
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SHA1
c5965141602832439c8c59935c0bb0aed87ec642
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SHA256
c4682163181637eb17e174cc795eba8b094f6d6c76a60b14cdfa38ae7471c768
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SHA512
c8f64e29b1e056ac2d02638dd0e13b4fbaaa5dbd094a8b76c3610094e89869fbcae0335299615ccdf8b5c202a010873f3bc4cb7d64cefd6bd227623fcd767aca
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SSDEEP
3072:QnNL++0BS7cD00iKpyDcsvY8FhMYYCgxSoF7+H88uEThFcbW7yW2eNJKaozrdKwt:QNN0Y7E00iyhjv7+HoacbIz+kwA8
Malware Config
Extracted
quasar
1.3.0.0
Office04
192.168.1.100:4800
QSR_MUTEX_7vNK4lP6dLGZATRF5p
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encryption_key
eX0M9ongNkCF1Jahr6Fc
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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
Signatures
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Quasar RAT
Quasar is an open source Remote Access Tool.
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Quasar family
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Quasar payload 1 IoCs
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\bazaar.2020.02\Trojan.MSIL.Agent.exe"C:\Users\Admin\AppData\Local\Temp\bazaar.2020.02\Trojan.MSIL.Agent.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
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DNSip-api.comRemote address:8.8.8.8:53Requestip-api.comIN AResponseip-api.comIN A208.95.112.1 -
GEThttp://ip-api.com/json/Remote address:208.95.112.1:80RequestGET /json/ HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.3; rv:48.0) Gecko/20100101 Firefox/48.0
Host: ip-api.com
Connection: Keep-Alive
ResponseHTTP/1.1 200 OK
Date: Fri, 31 Jan 2025 18:35:58 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 291
Access-Control-Allow-Origin: *
X-Ttl: 60
X-Rl: 44
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208.95.112.1:80http://ip-api.com/json/http
HTTP Request
GET http://ip-api.com/json/HTTP Response
200 -
192.168.1.100:4800 -
192.168.1.100:4800
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192.168.1.100:4800
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192.168.1.100:4800
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192.168.1.100:4800
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192.168.1.100:4800
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8.8.8.8:53ip-api.comdns
DNS Request
ip-api.com
DNS Response
208.95.112.1
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4KB
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Filesize
376KB
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Filesize
6.9MB
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Filesize
4KB
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Filesize
6.9MB