Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win10v2004-20241007-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
38bc15ae3acbd8e0260c34a7a3df5191
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SHA1
51ae6313f5852d0fb128ebe3acd225c686e13df8
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SHA256
81a1db18f5163f12087a3b1a6a92feb449b2577fdbb67e6eda3fa645813daa14
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SHA512
8669d6d780e3287c9fe646dcea0b7b4a397f9a09acfbb44331e615af81e337aae56e5f355cee90eb30259f409f1f3719963d2b68ff3ae6e0edc46e18494fa28a
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SSDEEP
49152:WvWI22SsaNYfdPBldt698dBcjHBLRJ6ObR3LoGdvxTHHB72eh2NT:Wv722SsaNYfdPBldt6+dBcjHBLRJ6I
Malware Config
Extracted
quasar
1.4.1
Office04
79.16.224.116:4782
7ff8c9b6-9b37-4875-9a37-4ba500934af8
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encryption_key
62BD9AD89C002DC49ECFCB143CD306F73074B7DF
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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