Static task
static1
Behavioral task
behavioral1
Sample
iyss.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
iyss.exe
Resource
win10v2004-20231222-en
General
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Target
3adbd98611e9f2e64b004814105d5615
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Size
1.6MB
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MD5
3adbd98611e9f2e64b004814105d5615
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SHA1
40e6b9070de5aced82f0da9e0ad209e30e381ccc
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SHA256
34749e402355e554043f2bd09699abf09e5b9ad8bb55ca83e146e57e89f0e869
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SHA512
e955a018f5b4c8119ebe66c4c2245cb8f06f0ac48d68e3387ec07f9afd68413c68786beb25b0c482234661d3994df05d6427c6c3af0886f9981cc749a1b1eeb8
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SSDEEP
49152:eHBQvXMrHqkxVBSG0j5mgX7IlbKkSKshE:eevXcHqkLBSO07IlbKv5hE
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/iyss.exe
Files
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3adbd98611e9f2e64b004814105d5615.rar
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iyss.exe.exe windows:1 windows x86 arch:x86
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI
Sections
CODE Size: 380KB - Virtual size: 379KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
DATA Size: 8KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
BSS Size: - Virtual size: 7KB
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 8KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: - Virtual size: 8B
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 512B - Virtual size: 24B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: - Virtual size: 21KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 74KB - Virtual size: 74KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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