Behavioral task
behavioral1
Sample
81ab45ebdb201c4b2ef1872e6a1bb16beb4b2e056e4b6404ffe3b7734ae2e5ae.exe
Resource
win7-20240221-en
General
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Target
81ab45ebdb201c4b2ef1872e6a1bb16beb4b2e056e4b6404ffe3b7734ae2e5ae
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Size
67KB
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MD5
b1e6c3f3e9b78c10038128e2bab53965
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SHA1
a82783fd91870bd76bfd111fa66d65ddb35e61ed
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SHA256
81ab45ebdb201c4b2ef1872e6a1bb16beb4b2e056e4b6404ffe3b7734ae2e5ae
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SHA512
96de110657965c37c90ce9c820f68bf7238089a261ca155776c6116eeb2305b44d08d0ade639cfad475dc7faa15a7592e1d3c3c705250e3ffdab2d6296e36900
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SSDEEP
768:tsOdNd07arrSVRnyCfeimwo3Emxxxxbyt+5UUUIgggj9888y:tzd/JyRyC7mxxxxdUUUn
Malware Config
Signatures
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Detects Windows executables referencing non-Windows User-Agents 2 IoCs
resource yara_rule sample INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA static1/unpack001/out.upx INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
UPX dump on OEP (original entry point) 1 IoCs
resource yara_rule sample UPX -
resource yara_rule sample upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource 81ab45ebdb201c4b2ef1872e6a1bb16beb4b2e056e4b6404ffe3b7734ae2e5ae unpack001/out.upx
Files
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81ab45ebdb201c4b2ef1872e6a1bb16beb4b2e056e4b6404ffe3b7734ae2e5ae.exe windows:4 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_32BIT_MACHINE
Sections
UPX0 Size: - Virtual size: 52KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 24KB - Virtual size: 24KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 8KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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out.upx.exe windows:4 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_32BIT_MACHINE
Sections
.text Size: 20KB - Virtual size: 19KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 4KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 4KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 36KB - Virtual size: 32KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ