General
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Target
TestFile.exe
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Size
3.2MB
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MD5
cfa0c860a76a2cb8e15dcfe774097dc8
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SHA1
4aeb7456b619f539e6f50cc8795d4e9307ff5317
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SHA256
1ca88e53459076619192ce06bd6532599c399836e969df16d5724fb2af9652d7
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SHA512
aebc2f8127c87b4a4f8ad57a3689bc5720db499fecadd751b3f683d3b7ccf68cb4dd2280fc09df835963e4aedb2ed512ca89f35cd2a48ce355595691a5c14aa1
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SSDEEP
49152:YvAt62XlaSFNWPjljiFa2RoUYIiyfRlBx1ToGd3STHHB72eh2NT:Yvs62XlaSFNWPjljiFXRoUYIHR/H
Malware Config
Extracted
quasar
1.4.1
Office04
12.75.114.52:4782
d942a9a5-3785-41ac-a7db-12e8f1fb6c3d
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encryption_key
E662E8B331BDD6D3B27E1C68FDDE49A9178AEBE8
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install_name
A.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
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 TestFile.exe
Files
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TestFile.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: 69KB - Virtual size: 68KB
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