Behavioral task
behavioral1
Sample
Primo dev loader.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
Primo dev loader.exe
Resource
win10v2004-20240419-en
General
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Target
Primo dev loader.exe
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Size
80KB
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MD5
db6cc1a28d72fd32560926b282fa0e07
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SHA1
865efed6123c190595ebac735a2f94ef83ef7370
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SHA256
b8e59362c4cbe49cf1c088ff5a450681e7f414288f7ae0383c47ae21b00ebc70
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SHA512
07798c3d5977c39f533c7e73b01acbbd3b61ddf7352945d954e0d6d7550e0e0255a3936d8a53b19685cda8ea1482b13a2748d2fa6e3d876e4c544b876ac002d1
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SSDEEP
1536:Rz5ZNlNvoq5Bd0+bWwypm6ITXBcOHYLQ7M5a:r7lNvo4bWzpOXyOHYcM5a
Malware Config
Extracted
xworm
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Install_directory
%AppData%
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install_file
Microsoft Network Inspection Service.exe
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pastebin_url
https://pastebin.com/raw/aJ6MfWBv
Signatures
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Detect Xworm Payload 1 IoCs
resource yara_rule sample family_xworm -
Xworm family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Primo dev loader.exe
Files
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Primo dev loader.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
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_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 68KB - Virtual size: 67KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 11KB - Virtual size: 10KB
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