Behavioral task
behavioral1
Sample
SiHost.exe
Resource
win7-20240220-en
General
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Target
SiHost.exe
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Size
348KB
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MD5
c6250d3d376c1956627bf8f4f827bbd6
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SHA1
7444e248bc182e849556cfa3c2519e30ae8ee82f
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SHA256
9b87f3813641da8be21f130cdd5cb52c2f8ae5494a408d2303f9770b7f3039d8
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SHA512
8de084cac0e01c8d5b1c8e5443ef97a1412bb4b7ed41d1e4c5e1b5e40750b0bb6d06c9a3b16e325ca8bbe260397ee130560d0d699ff302f2ef5f8196231fa44e
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SSDEEP
6144:ON13U1vhtvTA1B3jZwIbmXtNx47cSm3Bs3:iUJtLAX3jMXtNyw3Bs3
Malware Config
Extracted
quasar
1.3.0.0
Farrag
17.ip.gl.ply.gg:33386
QSR_MUTEX_4Q6TQpIEBpG4GGALTz
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encryption_key
qZ74sJrr75km6SoIX0sF
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install_name
SiHost.exe
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log_directory
SiHost
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reconnect_delay
3000
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startup_key
SiHost
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subdirectory
SiHost
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 SiHost.exe
Files
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SiHost.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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: 345KB - Virtual size: 344KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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