Behavioral task
behavioral1
Sample
nitrosnipr.exe
Resource
win7-20240903-en
General
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Target
nitrosnipr.exe
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Size
229KB
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MD5
0dcc2299f5e6a41c04593b9e1d8fb825
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SHA1
6d5b2580da6616d958f721c82241b52821dac5a1
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SHA256
a820aa027bed73820a45f380eb8858bc6c24dcce2ed9bc2bfdc4b7ecc54ba7e7
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SHA512
f6553276f07988aae7a7232c3f98447a7883f1b87c1a85955909e7374d8cd4bd08b923395283c0115d5cb123f287f3938d02c2700ccd264ae78f9f771df35920
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SSDEEP
6144:tloZM+rIkd8g+EtXHkv/iD40H9txd58e1mUtbi:voZtL+EP8MHxDnM
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1284331415886102568/N2tf6_mTq84gsH53FdCWJR8H0Xf-6qvm8lG0GmsORl9dLRkzSObvd00piUvVBlEj6_6d
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 nitrosnipr.exe
Files
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nitrosnipr.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