Behavioral task
behavioral1
Sample
gta_sa.exe
Resource
win7-20231129-en
General
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Target
gta_sa.exe
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Size
3.1MB
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MD5
75e93cb4b49079936178a1bcbf68c09c
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SHA1
455813ab7bb4c7244e8d5dafd39676bca25c8922
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SHA256
7baf84b2dc1ef0c69fd51ab29dafe3645c7f8dce60b2f18022ec5270f13a1e2a
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SHA512
76aaa03a6bfad7f5332a6fbed669ecd9008d4f249e5100177e159b7c2b7d0c133dffeb77df4619f805eba334ecd249df0bd7a13d1fac24fb92000fece17f5f2b
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SSDEEP
49152:PvnI22SsaNYfdPBldt698dBcjHCeRJ6rbR3LoGd0CTHHB72eh2NT:PvI22SsaNYfdPBldt6+dBcjHCeRJ69k
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.100.4:4782
1e8eaa94-2ef4-4aac-b8b3-f64f414d3aa4
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encryption_key
C5B64C1909A767DE1419E2BFAEADC11AD671839B
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install_name
gta_sa.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Console Window Host
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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 gta_sa.exe
Files
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gta_sa.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