General
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Target
Client-built.exe
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Size
3.1MB
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MD5
89211e15b473db84cfd447e3dbb4fdcd
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SHA1
1d861ff885aa2cd8dc11f01f1a0d202410349fa3
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SHA256
84a0907e7e112b593f99f0a7440eb3d74e71bf7dfe19d27c298a28042acf5e19
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SHA512
5fc2f8f646732efc65ab6d9cb94e9365d241f22fd30e586d8524bde3d7c37d700d32e0bae2faf762b75e98a3d799747f45cd724c2cadc36085645c7a97bcd671
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SSDEEP
49152:rvnI22SsaNYfdPBldt698dBcjHbfUu1vcLoGCITHHB72eh2NT:rvI22SsaNYfdPBldt6+dBcjHbfUx
Malware Config
Extracted
quasar
1.4.1
Office04
95.103.111.116:4782
e1248b94-1e99-492a-b8c9-74b76d805a67
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encryption_key
7661CB0AB05BF4FD5649849C60F4B3FADAEED859
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install_name
test.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