General
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Target
Client-built.exe
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Size
3.1MB
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MD5
b5f4f7c109c4a54c205f980ea7aa6e29
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SHA1
d835c2c60314b13a52afe8e536508181a1af2541
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SHA256
c6e1b33167b3c60919d11d743346474b26f077106a13c2fa47bceb901df1e34c
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SHA512
69f79f7c4ba182d6ca071eb8bf40d6b4f151aca093becdd49ede64491fdb63a7079fc578a467c0c614630eb07c875cbf946c38d6da223e335126611d10939428
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SSDEEP
49152:WvDI22SsaNYfdPBldt698dBcjHE0iMvBxomoGdDTHHB72eh2NT:Wv822SsaNYfdPBldt6+dBcjHOMZ
Malware Config
Extracted
quasar
1.4.1
Office04
DESKTOP-HGNRNTJ:4782
2e563a1d-05a2-4f62-98ea-6a60b7f35927
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encryption_key
9F16F8D183C2D153291F51776B3B3469B2EC1343
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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 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: 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