Behavioral task
behavioral1
Sample
wsyscheck中文版/WDosDel.dll
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
wsyscheck中文版/WDosDel.dll
Resource
win10v2004-20240704-en
Behavioral task
behavioral3
Sample
wsyscheck中文版/Wsyscheck.exe
Resource
win7-20240220-en
Behavioral task
behavioral4
Sample
wsyscheck中文版/Wsyscheck.exe
Resource
win10v2004-20240704-en
General
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Target
27ecd17a669b6ccad4cf42b172136d29_JaffaCakes118
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Size
1.0MB
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MD5
27ecd17a669b6ccad4cf42b172136d29
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SHA1
612a83f7cd74565742d85b76dd9ad1db23a23296
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SHA256
a78ee11fc7538784e6aa9097978c195f93e9707bed0b757b248f425850a35374
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SHA512
563c14b043e096a926f3ed2959949a10670fe0087df5a3e4bff86c7c9c1f2c02a69fdc2b19b2e4163a451deeb3d5bdc11f669da6d1d28bf9e6a1973acbdc4fb7
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SSDEEP
24576:wHcuTqai+PxQWrxry3CWPClcoghqdhADwItGkb1Qlp/R35s+j:WxTDi+KWrxuSWKlcoghqd+DwpkYp3Zj
Malware Config
Signatures
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resource yara_rule static1/unpack001/wsyscheck中文版/Wsyscheck.exe upx -
Unsigned PE 3 IoCs
Checks for missing Authenticode signature.
resource unpack001/wsyscheck中文版/WDosDel.dat unpack001/wsyscheck中文版/Wsyscheck.exe unpack002/out.upx
Files
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27ecd17a669b6ccad4cf42b172136d29_JaffaCakes118.rar
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wsyscheck中文版/WDosDel.dat.dll windows:4 windows x86 arch:x86
Headers
File Characteristics
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_DLL
IMAGE_FILE_BYTES_REVERSED_HI
Sections
CODE Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
DATA Size: 512B - Virtual size: 160B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
BSS Size: - Virtual size: 1KB
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 1024B - Virtual size: 702B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 512B - Virtual size: 432B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 612KB - Virtual size: 612KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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wsyscheck中文版/WDosDel说明.txt
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wsyscheck中文版/Wsyscheck.exe.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_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI
Sections
UPX0 Size: - Virtual size: 780KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 407KB - Virtual size: 408KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 13KB - Virtual size: 16KB
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_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI
Sections
CODE Size: 864KB - Virtual size: 864KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
DATA Size: 16KB - Virtual size: 15KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
BSS Size: - Virtual size: 8KB
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 13KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: - Virtual size: 16B
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: 62KB - Virtual size: 61KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 186KB - Virtual size: 186KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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wsyscheck中文版/Wsyscheck简要说明.txt
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wsyscheck中文版/升级说明.txt