Overview
overview
10Static
static
10krampus.rar
windows7-x64
krampus.rar
windows10-2004-x64
3Ro-exec/RE...c).txt
windows7-x64
1Ro-exec/RE...c).txt
windows10-2004-x64
1Ro-exec/ezdebug.png
windows7-x64
3Ro-exec/ezdebug.png
windows10-2004-x64
3Ro-exec/loader.exe
windows7-x64
10Ro-exec/loader.exe
windows10-2004-x64
10Behavioral task
behavioral1
Sample
krampus.rar
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
krampus.rar
Resource
win10v2004-20240508-en
Behavioral task
behavioral3
Sample
Ro-exec/READ ME (ro-exec).txt
Resource
win7-20240508-en
Behavioral task
behavioral4
Sample
Ro-exec/READ ME (ro-exec).txt
Resource
win10v2004-20240508-en
Behavioral task
behavioral5
Sample
Ro-exec/ezdebug.png
Resource
win7-20240508-en
Behavioral task
behavioral6
Sample
Ro-exec/ezdebug.png
Resource
win10v2004-20240508-en
Behavioral task
behavioral7
Sample
Ro-exec/loader.exe
Resource
win7-20240221-en
General
-
Target
krampus.rar
-
Size
88KB
-
MD5
ac2503cd31dca53357a49e68ea6994e2
-
SHA1
b02ab0404058ab5798c5d94eaa51034ea4e83eb8
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SHA256
13a4c84d238e679f337b702d33299fa75d921d4718ca5bdb9ed4fc2072cf627e
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SHA512
580bab36de6f7bb8c8756a0159c59a21b46d479457f7e3fe18d6622b0651f49f6f8cbc74f32a6dc42259a61a388011abf8fd19857f92c4469cacdc35d41fce4a
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SSDEEP
1536:GQUqgFIsoYAqRQ36tvaOapJmA+mMA9i9GIgULI92rD3aG7mRM5DUtf2Bk/:GQgF/oYdxZaOapXd9uGzU89nG7tWtf2W
Malware Config
Extracted
xworm
84.54.51.97:7000
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Install_directory
%ProgramData%
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install_file
svchost.exe
Signatures
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Detect Xworm Payload 1 IoCs
resource yara_rule static1/unpack001/Ro-exec/loader.exe family_xworm -
Xworm family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/Ro-exec/loader.exe
Files
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krampus.rar.rar
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Ro-exec/READ ME (ro-exec).txt
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Ro-exec/ezdebug.png.png
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Ro-exec/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: 63KB - Virtual size: 63KB
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