Behavioral task
behavioral1
Sample
ZCCT.xlsx.exe
Resource
win7-20231215-en
General
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Target
ZCCT.xlsx.exe
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Size
287KB
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MD5
828ec9e9d1fd89c29c09523f4553cf5b
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SHA1
c07d1c3695bde351f14cf610e6237877b02d5cec
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SHA256
d3492c1347976ac6e6cef64371d97351ec97ad8bac67d14d4be42bff471dc064
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SHA512
16d89e6c48e2d25598ad203a9b2810d514a72e0c5daf2aa9af45b556691161d427c73653158cd75b00698fb8dffde728fa643c1102b9f8fb181aa5f47120e1ee
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SSDEEP
6144:oloZM+rIkd8g+EtXHkv/iD4bTdZ1P8e1mFRAi/:2oZtL+EP8bT9K
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1153056107867164752/tRuN1HzDWrxnDeJOXWa-NtAfRVdka8UNdyoIo4-qrYXI_C1XFMggkrLEFyTkoagsN9jt
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule sample family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource ZCCT.xlsx.exe
Files
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ZCCT.xlsx.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 229KB - Virtual size: 229KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 56KB - Virtual size: 56KB
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