Behavioral task
behavioral1
Sample
37fa30c9dcf255bda62c0a6b7f88a48263a3da18d18d8c66b1cbbc801077cfdf.exe
Resource
win7-20240221-en
General
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Target
a760c4263a2d1e144c2fd116bf1351e1.bin
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Size
229KB
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MD5
d18983ed988e11f6bc61465248ac8c2a
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SHA1
69c08a36db31b18fa3543a681ff009fec32331fc
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SHA256
cb2efd76831c2dbf85368de55e298c290fa3d22f303745195c734ee4cf979c79
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SHA512
1ac6cfd32688efc12f091d076f9dee568b84a53f8e8ce1c369e7c0c3d79a7ece8a57fc4ca6c2085fd60ad24a53fde116931b4022c60235e03b59ceaf7f0bce41
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SSDEEP
6144:ZV9qTTh6IYxNTW0m2JDUQ2sysd/OFvbNNa+9A6:BvNTF9ysd/OFjTa+m6
Malware Config
Extracted
quasar
1.4.0
BEOBEO
222.253.182.185:9090
b629c3f9-6e84-4b12-aa44-142bd48d26fe
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encryption_key
E3F9325FDCF7CBE474DB678812431E432D3171B2
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install_name
Realtek HD Audio Universal Services.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Realtek
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subdirectory
Realtek HD Audio Universal Services
Signatures
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Quasar family
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Quasar payload 1 IoCs
resource yara_rule static1/unpack001/37fa30c9dcf255bda62c0a6b7f88a48263a3da18d18d8c66b1cbbc801077cfdf.exe family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/37fa30c9dcf255bda62c0a6b7f88a48263a3da18d18d8c66b1cbbc801077cfdf.exe
Files
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a760c4263a2d1e144c2fd116bf1351e1.bin.zip
Password: infected
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37fa30c9dcf255bda62c0a6b7f88a48263a3da18d18d8c66b1cbbc801077cfdf.exe.exe windows:4 windows x86 arch:x86
Password: infected
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: 498KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 3KB - Virtual size: 3KB
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