General
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Target
Client-built.exe
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Size
3.1MB
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MD5
c0a15477ed759cacb6e41c32df4ee3b6
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SHA1
1105f1a6da7fc5286fc6bbf3bb09b0640c390475
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SHA256
40b1e1519d9240e23b0052b13f30cac24db6c23814fb91ec3c151f6e8a477858
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SHA512
595c423778602e61e37ba19761c43d6b333357113e31c50cc0947336a122cf3499e2924af3dc523e57df79fd0be435e61286f9c255630d95b56adc15735e6bfa
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SSDEEP
49152:WvEt62XlaSFNWPjljiFa2RoUYI4bRJ6rbR3LoGdDNTHHB72eh2NT:WvY62XlaSFNWPjljiFXRoUYI4bRJ69T
Malware Config
Extracted
quasar
1.4.1
Office04
Ljqzskib:4782
6d2bad0c-8668-4007-b0ab-432a32c2b700
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encryption_key
EBBC63CA357CC42C1ADBEA1947460FC46B646E71
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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
file explorer start up
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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