Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240221-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
3f8eed5b849f82d1d648309d4dff4259
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SHA1
84afa96423792de3ec490807adf9ed91f3dbe941
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SHA256
eaa750c492fa799eb0b19e7d13a265c5091593d8b6c90a7c50b50c8c84469dad
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SHA512
ec4e36ec67e6fc355bfec6d5d197c8a35e9d0a3ca2dd412ce90687a42e3776cd8cf910da3d7af1834b808fc76d3569ad81e63e3f1d5d469966db7d318b572ba9
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SSDEEP
49152:CvvY52fyaSZOrPWluWBuGG5g5hAfDobRcLoGd3FWTHHB72eh2NT:CvA52fyaSZOrPWluWBDG5g5hAfDL
Malware Config
Extracted
quasar
1.4.1
Office04
Quasar:4782
9b67176b-b611-43bb-9088-e3361aae729e
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encryption_key
8E11C43A418F21B478F3A8A93EDFD963316D550B
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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
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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