Behavioral task
behavioral1
Sample
nopen.exe
Resource
win10v2004-20231127-de
General
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Target
nopen.exe
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Size
229KB
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MD5
d1763b6d491b8027a8812b3337e4fb03
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SHA1
d4a446e00e1c14e6dc4481ab0f9e97773e9cad7d
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SHA256
154115262885b920680ca7d9160a046a1d3d01ddadbe43ae9af80dad1c0b03d0
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SHA512
0a4711e51463ca4ec5bd65c6b518e4d89af654b44fe88dee68e2107b6a56a930d7cd5fa6d785947cedb4e7d42172c55190c4b28a981923dcce7bb31575a4c53e
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SSDEEP
6144:tloZMifsXtioRkts/cnnK6cMlaeTRR/k4XpG/BcoNqhyvI8e1mbi:voZetlRk83MlaeTRR/k4XpG/BcoNqZ1
Malware Config
Extracted
umbral
https://discordapp.com/api/webhooks/1175470177626894386/cdMJXOsqvIatvi0ls9VQ1xV_xfDaN81YYQYEc3XBphkMxBenTa_vy1cYgaAM-uY3ChwH
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 nopen.exe
Files
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nopen.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: 227KB - Virtual size: 226KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - 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