Static task
static1
Behavioral task
behavioral1
Sample
LETTER 2023.10.09.exe
Resource
win7-20230831-en
General
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Target
ba50a3614b9e49a00adaa0c5e68386552716df87358c06a1672e655395ac6995
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Size
601KB
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MD5
b2737b542dda687b2f235261ade98a79
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SHA1
8883912491d3b7541ca6c500c5ce0dd2df596157
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SHA256
ba50a3614b9e49a00adaa0c5e68386552716df87358c06a1672e655395ac6995
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SHA512
8073794b5ee2a331a53a05d1e83bcb2ebd9c8102e063e4efc344bfd52ecb4d9badb915def09cf31d763f36f16f572791cb04ffa7a331cf08007aead10b34e177
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SSDEEP
12288:jZUGGZ4AP2G2VfnSb4cBnbFP6Jvbv59Y8weRTjViF5CzSV/KY/N:jOHKk2G+SbvBbFP8jRdNRTjVXz6rF
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/LETTER 2023.10.09.com
Files
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ba50a3614b9e49a00adaa0c5e68386552716df87358c06a1672e655395ac6995.zip
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LETTER 2023.10.09.com.exe windows:4 windows x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 643KB - Virtual size: 642KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ