Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240729-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
f8c8d4827549bcada493f9f74c53255c
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SHA1
cfb08857325c4229bbacc1066a2c2547986b4e09
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SHA256
62ba28de283c1a55c661e50f1a00ee32d6e8d698c902e76502d4dd35f0619199
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SHA512
8284b0ac2c2a4281c672ec5b9d559f087c6a56462c9efa703ddf26544c96be055abfbf5cacb4d003e30598bead172dcfce2dc30925b80ba98a364ab9ea41cdc8
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SSDEEP
49152:mv+I22SsaNYfdPBldt698dBcjHIJRJ6IbR3LoGd5THHB72eh2NT:mvz22SsaNYfdPBldt6+dBcjHIJRJ6i
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.42.120:4782
b0cb9350-994a-47b5-8b24-177175f2d8a2
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encryption_key
99A9E29AF4C17D170114202006F56B24FDE0F705
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install_name
NovaFn.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Windows Assistant
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subdirectory
MandatoryUtils
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