Behavioral task
behavioral1
Sample
OperaSetup.exe
Resource
win7-20230220-en
General
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Target
OperaSetup.exe
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Size
2.2MB
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MD5
567336f1c3f36d5cfebee6642e6c0337
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SHA1
3655e845b134cf581909859c70a96a42d4982ad3
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SHA256
dbf1a6e3cefc040469a325e79d0221d18497b22996a9e10c32e2a4e3e4b459bb
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SHA512
66408c5f94e4cbe094fff03dfe5605f2ae151ce59240719195d571e647ece556e756e3fbc5571866e3eceefbc40d1ec6de546d52a9913fb4b3f07146041c7dff
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SSDEEP
49152:Ui52OvtypKePmtIj2WOBC7qzLGYbPgZseXqGnrs19ygCd:U2pwpKJtWIUqz6YbPgNXqErs19O
Malware Config
Signatures
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resource yara_rule sample upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource OperaSetup.exe unpack001/out.upx
Files
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OperaSetup.exe.exe windows x86
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Sections
UPX0 Size: - Virtual size: 1.8MB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 2.2MB - Virtual size: 2.2MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 33KB - Virtual size: 36KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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out.upx.exe windows x86
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Sections
.text Size: 232KB - Virtual size: 231KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 56KB - Virtual size: 56KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 7KB - Virtual size: 13KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.00cfg Size: 512B - Virtual size: 4B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.tls Size: 512B - Virtual size: 9B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.voltbl Size: 512B - Virtual size: 234B
.rsrc Size: 3.6MB - Virtual size: 3.6MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 12KB - Virtual size: 11KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ