Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win10ltsc2021-20241023-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
dd2a6038c221bd8c0cbef5f6cab1a2dd
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SHA1
1be55e1b91c69cc24187bb736ee999c36116a8f8
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SHA256
dcda7ad82a917a329939789f9a8514e7afa205d208c3af9356988cb1fe1f596d
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SHA512
2dd8e63c67876817b415ce62c85390a08cc8dbbc04d5b96301d497d36605737c6f6b03d6481930b5e08089e67739ba57e0e739344e3c75d3b45d9b5df56c0cfd
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SSDEEP
49152:Dv7I22SsaNYfdPBldt698dBcjHq/RJ6GbR3LoGdSUTHHB72eh2NT:DvE22SsaNYfdPBldt6+dBcjHq/RJ6A
Malware Config
Extracted
quasar
1.4.1
Office04
68.8.112.15:443
68c72d56-7c01-4752-8b16-99645c1898fc
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encryption_key
6A865538EA2172CEA230F0158FFB3F9E7FC36141
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
5
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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