Behavioral task
behavioral1
Sample
plswork.exe
Resource
win7-20240729-en
General
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Target
plswork.exe
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Size
502KB
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MD5
71685fb1a3701f1e27e48ba3e3ce9530
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SHA1
f460a9ecc7e35b4691532bc6c647dbe3973a51ca
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SHA256
6600b4938a679ecd93d6149fb3f8fe74c8b347106de55a4853a76ae7a204950e
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SHA512
3a7505c3faacf6f3e113570545767757d2db5aa342023a4eea27e49e4d632a0064a957c6b07f950e727dd71b8262b768626521cf1d1fbb195fd36d7db7bf5c5a
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SSDEEP
12288:9TEgdfY2xUJkhPPck43yw7VpDZx68Vcde:eUwtOoyw7VpDZdcde
Malware Config
Extracted
quasar
1.4.0
Office04
137.184.144.245:4782
6cfe4a65-c41d-4b02-9ae9-e727a748ae84
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encryption_key
B702BA239316FCF317B584A351F2EC1696EBE772
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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
java updater
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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 plswork.exe
Files
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plswork.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: 498KB - Virtual size: 497KB
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