General
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Target
client1.exe
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Size
3.1MB
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MD5
57798d4dd91be926e60b37a61e5f40ff
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SHA1
ca811e029fdd9949c5c62739240d8c76900ea6e7
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SHA256
3df75e2a2dd40eeabac45f81c840dc934c10ba05df05f233b1c26fde5b4c7421
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SHA512
a4dab3ee257479d4c97429a4c23ab4b27fad5186f28c00bf6f456771a0d26898a7b0b10bc252f4743d83395e91cb4866e4d08049d88f50fec8cc17c904a00f12
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SSDEEP
49152:/vyI22SsaNYfdPBldt698dBcjHAYH7oGd0BTHHB72eh2NT:/vf22SsaNYfdPBldt6+dBcjHAYbE
Malware Config
Extracted
quasar
1.4.1
v0.1
147.185.221.19:9264
abff0131-e47c-48a9-acbf-670ddd76b7c2
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encryption_key
86DD7DA02996F71324EA9A66B712B0F1735056E7
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install_name
APF.exe
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log_directory
ms_ess
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reconnect_delay
3000
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startup_key
Microsoft application
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subdirectory
ms_essentials
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 client1.exe
Files
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client1.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