General
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Target
quasarxd.exe
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Size
3.1MB
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MD5
909b167a9c99759a1203f4a27f805112
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SHA1
203d46833ece9748e3875ffefbd5b268f0ec9b64
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SHA256
862bd4762dc753d859ac15ae2c79d99c9b4f637a52d5ddfe5ed30dda1135b60b
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SHA512
1405563bc6e3c61205ac8c39e603f2befcb1e48c5d3316aec5235e80d64d5b5cd3c2ea989eb1471ac69c7b0503bcfd9e95e9c66b11eb661f46bb2802995adcaf
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SSDEEP
49152:fvyI22SsaNYfdPBldt698dBcjHhqx71v4LoGy5cSVTHHB72eh2NT:fvf22SsaNYfdPBldt6+dBcjHhqxU
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.117:4782
d4f509cf-7da3-4c4c-9cfd-174cb5da47fa
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encryption_key
99DD0129158FA6F5C116037512C574C2595B28C3
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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 quasarxd.exe
Files
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quasarxd.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