Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
Client-built.exe
Resource
win10v2004-20240426-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
fd874e0d6811bcbd5feb812040853642
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SHA1
7213c686b0e8cbb6527077eaeb3291791a8f06ba
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SHA256
b2a5bbacabfa8f6cd6c24f87a5825a8231cce32086d369be612c6b7bdf658dad
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SHA512
3c8265e9d981b0d5ebbd1157b79afb3b31f57f6083f2c5ce6d4658718b5d79faf4358936af76aa4a4e1e94f7803ef6c77e07e782333d9d7003d42ea1de2ffa34
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SSDEEP
49152:bvxI22SsaNYfdPBldt698dBcjHLYqQJmzaloGdbhTHHB72eh2NT:bvi22SsaNYfdPBldt6+dBcjHkqQ3
Malware Config
Extracted
quasar
1.4.1
SeroXen
operations-wagner.gl.at.ply.gg:50199
164b6496-cf32-4fdd-b70d-de29665c8286
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encryption_key
A88D7FED7F655EBDC4F99C21BAE5EC62300AADC7
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install_name
$sxr-insta.exe
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log_directory
$sxr-logs
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reconnect_delay
1000
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startup_key
$sxr-mstha
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subdirectory
$sxr-start
Signatures
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Quasar family
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Quasar payload 1 IoCs
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Client-built.exe
Files
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Client-built.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 3.1MB - Virtual size: 3.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 7KB - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ