Behavioral task
behavioral1
Sample
Microsoft_Upgrade.exe
Resource
win7-20240221-en
General
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Target
129e409e4b18cbbee4241ee461bcad25_JaffaCakes118
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Size
576KB
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MD5
129e409e4b18cbbee4241ee461bcad25
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SHA1
c932cd873bb37f3f1d2959b848c67fc344a9d092
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SHA256
619242f828d1c90595587ddab9ad3890f93b96b0723e419960d58d90091826d1
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SHA512
9130bf13682fe0a60dfb4a6f2b8a2d8835af789815daa41d81756c9582e97e1c85b2d50abd8e7053e9d9289aa7a816d5e12c3b5a03678ff6baac402171c3e65a
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SSDEEP
12288:0VXR/bkJ2u36I9t0mwShEqIQH063+U8XKERkjXr8qWYNGpe/sNL7ZfB:aXR/bw2u36g0vave6KKjXwqWYNGI8tB
Malware Config
Signatures
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resource yara_rule static1/unpack002/Microsoft_Upgrade.exe upx -
AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule static1/unpack003/out.upx autoit_exe -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack002/Microsoft_Upgrade.exe unpack003/out.upx
Files
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129e409e4b18cbbee4241ee461bcad25_JaffaCakes118.zip
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Microsoft_Update.img.iso
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Microsoft_Upgrade.exe.exe windows:5 windows x86 arch:x86
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
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: 808KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 343KB - Virtual size: 344KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 293KB - Virtual size: 296KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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out.upx.exe windows:5 windows x86 arch:x86
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Sections
.text Size: 568KB - Virtual size: 567KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 191KB - Virtual size: 191KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 20KB - Virtual size: 35KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 292KB - Virtual size: 292KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 28KB - Virtual size: 28KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ