General
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Target
Client-built.exe
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Size
3.1MB
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MD5
e0742646167fd5a72790af5346099276
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SHA1
b2613a39cf361377cfcc21ac469fbb4b6d5970e9
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SHA256
d1dcbaace029e8ab3ce6ff82a222b73ef9426673d9a4e6303766b089dd3e06cc
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SHA512
88d1db33993b3b249e105b1c72e3c7e210c188f9ed045fbce508fa8845a7ed919f74244fa8ffd3dd88e43d839d62eb9b17a756d35397b64c7d4ab88c5785aaf9
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SSDEEP
49152:KvyI22SsaNYfdPBldt698dBcjHFg/ABx4LoGdNHTHHB72eh2NT:Kvf22SsaNYfdPBldt6+dBcjHe/xd
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.0.9:4782
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
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