General
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Target
cl.exe
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Size
3.1MB
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MD5
4cdf8f1c79b75f8bb6c7518a93e9ab4b
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SHA1
33b8f93aec750713c8488ce80d857a2c760e9dd9
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SHA256
48b86c090f6073dfc15faf14c09694c88386d36f8c046010d7e3329b3a6db14d
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SHA512
30d4b373f3209837ce7b63b975b2b51d9a32842e6c469345b103465c003def242a7e759393f65c60dd399421c237bb80fabd2c2bb5f8d10c61c7c322f625015c
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SSDEEP
49152:mvOI22SsaNYfdPBldt698dBcjH3UxNESEIk/ijLoGdwWTHHB72eh2NT:mvj22SsaNYfdPBldt6+dBcjHExDv
Malware Config
Extracted
quasar
1.4.1
Office04
0.tcp.eu.ngrok.io:19923
71ad47bb-d541-40e7-9d2d-4f5b29133178
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encryption_key
9683B34A1789E679FEE1A507A64F0B2A97781FB4
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install_name
svchost.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 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 cl.exe
Files
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cl.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: 3KB - Virtual size: 2KB
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