Behavioral task
behavioral1
Sample
upx.exe
Resource
win7-20240903-en
General
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Target
upx.exe
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Size
230KB
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MD5
de2d4e3d82dc91ee44c91793de896c7a
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SHA1
3b8db665d3666be6a4234c801b9ca93ced36655e
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SHA256
2744f1315bfa21aef381540d3ad53bc90cf15a8513905aba442b4610e8f0c337
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SHA512
6a257e6df13bd6dcc1452fa692515b955896f1141aad84110ceaad5a3a929607586c849bcfdb161d648e89c53d747a39e564551172fd36c1e440618346b7b40f
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SSDEEP
6144:jloZM+rIkd8g+EtXHkv/iD4Ff6Cj5nsAv7OXZkQlPJXb8e1mq/i:BoZtL+EP8t6Cj5nsAv7OXZkQllNq
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1286714539492249691/WGN7-dFwgZ0rCdSawTA_6w4aqFusamrpnEHJq2mpQA-uVYCCW9OCO2W1dKDE0JeS5MPw
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 upx.exe
Files
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upx.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: 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