General
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Target
Installer.exe
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Size
3.1MB
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MD5
19570d471b4f795bf854b8f8951d28f0
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SHA1
9d43a2c713ca6d8d7ecf2b9546b24add96612994
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SHA256
9057d608444db943deadf4f2b4da0b6c9e8bbfcb1efcf451679fa2cf1e7f3a18
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SHA512
f3f059d81f29f3e3607f9837be54226a5a82f83d64c812b01b6a3200abc3e3a41360a931dfe143c07359df5bb07bcb5dc695882a715ccf635c3ab5a54bb59298
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SSDEEP
49152:3vyI22SsaNYfdPBldt698dBcjHAD6eCLogoGdGfTHHB72eh2NT:3vf22SsaNYfdPBldt6+dBcjHAD63W
Malware Config
Extracted
quasar
1.4.1
Office04
azxq0ap.localto.net:3425
e51e2b65-e963-4051-9736-67d57ed46798
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encryption_key
AEA258EF65BF1786F0F767C0BE2497ECC304C46F
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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
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource Installer.exe
Files
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Installer.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