Behavioral task
behavioral1
Sample
FN_kolt_woofer.exe
Resource
win7-20240729-en
General
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Target
FN_kolt_woofer.exe
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Size
229KB
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MD5
88e82fa4e92eaed5b089d99ca669fbd3
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SHA1
c6287977d98930e7022fc1c6dfbfc4e302b724c8
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SHA256
1a4e8449edc0e1f28f95ee9eaba0129264d90168797e65c47502996b15fbcde5
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SHA512
5759f49a352d54c5d6be12b9f03d15757a802bde7da91f28bdac2ccc22f1afb852e3d734e54eb2e7f2129c8c4213421f991692882a15569a93430e137c1d1e7b
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SSDEEP
6144:lloZM+rIkd8g+EtXHkv/iD4T6FcHdmOhyU9va6vyvb8e1mti:noZtL+EP8T6FcHdmOhyU9va6vM/
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1322576460233310239/6_wiWtzQcW0DjdxEb7s3m1q1GXR6Nn8yox-lCYNIkeI8fCOrmCSg8qqtlHFzL-ivzVr6
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 FN_kolt_woofer.exe
Files
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FN_kolt_woofer.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