Static task
static1
Behavioral task
behavioral1
Sample
PSTViewer32.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
PSTViewer32.exe
Resource
win10v2004-20240419-en
General
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Target
PSTViewer32.exe
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Size
1.7MB
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MD5
5946576977bce2865a923c63b3e6e067
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SHA1
e2aeaf4302ae25dba65181fa14beb2d18bf99915
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SHA256
3bfca36f910094491535ac5847ea54477f3e4f1420ee2cc20cb0e6b87af3c3d8
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SHA512
97a234b3620280e8e14283fffc8d0a2e345b22433f068548a715735425a030300b40729ccf5190f855fd3f88a2fb68ee8f2fcc6fbad47be9883db48efbf0ecb2
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SSDEEP
24576:JBwpFj4/xwtpQ4Mn4CVCdXuaJItLhLtDdmYqqxfShD6xt:spVWmpXuMqLFBc6kD6x
Malware Config
Signatures
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.NET Reactor proctector 1 IoCs
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
resource yara_rule sample net_reactor -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource PSTViewer32.exe
Files
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PSTViewer32.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_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 1.7MB - Virtual size: 1.7MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 31KB - Virtual size: 30KB
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