Behavioral task
behavioral1
Sample
whoistd.chm
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
whoistd.chm
Resource
win10v2004-20231215-en
Behavioral task
behavioral3
Sample
whoistd.exe
Resource
win7-20231129-en
Behavioral task
behavioral4
Sample
whoistd.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral5
Sample
新云软件.url
Resource
win7-20231215-en
Behavioral task
behavioral6
Sample
新云软件.url
Resource
win10v2004-20231222-en
General
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Target
8f29d34fb06fb7b07738fa5a7e7d2164
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Size
40KB
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MD5
8f29d34fb06fb7b07738fa5a7e7d2164
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SHA1
52b9d6e11f09475cd29d0c82deb139c78b783150
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SHA256
6b453e0fb8a3552668b8110aecd4750a895ad6832f8b9c81fff9fb746f7689cc
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SHA512
659e8cd024eb38574aced187b42a2067414a09afd3bccd9fb4b0e6b234432f990cb1d4de04f914ff1ff8050c47d797aa97289a53e296e15ca330128b9519c714
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SSDEEP
768:+OozEg3R/PGJPGJ6NNiAdYkC+WsAA/LNLGMjBdIpb9yYprKNAFVjOrc:KEIHUAC4RLUZSxbvZKNAFUrc
Malware Config
Signatures
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Nirsoft 1 IoCs
resource yara_rule static1/unpack002/out.upx Nirsoft -
resource yara_rule static1/unpack001/whoistd.exe upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/whoistd.exe unpack002/out.upx
Files
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8f29d34fb06fb7b07738fa5a7e7d2164.rar
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readme.txt
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whoistd.chm.chm
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whoistd.exe.exe windows:4 windows x86 arch:x86
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Sections
UPX0 Size: - Virtual size: 44KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 29KB - Virtual size: 32KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 4KB - 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_32BIT_MACHINE
Sections
.text Size: 38KB - Virtual size: 37KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 8KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 14KB - Virtual size: 14KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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新云软件.url.url