Behavioral task
behavioral1
Sample
0x000f0000000054ab-159.exe
Resource
win7-20240221-en
General
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Target
0x000f0000000054ab-159.dat
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Size
3.1MB
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MD5
1c35fbe0502a246c9e89d91c80ab65f6
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SHA1
cb2c72b76cbce0ad3338c7f8b84b52f80d3aa3a5
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SHA256
3effc3594b1ec71f6b1cdf420ed0dab7fdbb675b1b9c22dbf13d5de56ba137b6
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SHA512
a965a884b6a3a4869f6e466667700f32f11f821a1aa8cd367ebaea43b9aa5227c04514728ac786a88fef031e1d24cae0f244a3efedcb6328f952664bf4079701
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SSDEEP
49152:Wv2I22SsaNYfdPBldt698dBcjHX8xNESE4k/iRLoGdoMTHHB72eh2NT:Wvb22SsaNYfdPBldt6+dBcjHMxPh
Malware Config
Extracted
quasar
1.4.1
TERR
77.232.132.25:4999
3cc5db7e-8210-40a3-9fe3-434d1f73d4d8
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encryption_key
790BD6D1C1540AE1BFB811F2DC1E0185525C5DCB
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install_name
LestaClient.exe
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log_directory
LestaLogs
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reconnect_delay
3000
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startup_key
Lesta Game Center
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subdirectory
Lesta
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 0x000f0000000054ab-159.dat
Files
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0x000f0000000054ab-159.dat.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