Behavioral task
behavioral1
Sample
mbrlocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
mbrlocker.exe
Resource
win10v2004-20231215-en
General
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Target
mbrlocker.exe
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Size
7KB
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MD5
61dc75a6465bc7582f873b554fcb1b6a
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SHA1
9dcfd74bcb873ddb4ed65ea234140f33664a9ff2
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SHA256
eaad06b4a7b1072a3e7e361638e75ffc18d81e17d8a443b511b77162fe4251a3
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SHA512
457ae5e5315645f8d496fe4066f2487f8e17372f9225b648498b5444b9f13ed1b7768a773c37153cf32518ec102d2c8c5f3f89f7d760a81ded9bc96848834f1a
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SSDEEP
96:lrZhl8wdS+r3yOYW189fTwUVF0CWHyjk8P1LOmjXfihExs2VKi6oWd96OGMUA:Nzdrr1FG1WDCgmjPZHT/OGMUA
Malware Config
Signatures
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Detected Xorist Ransomware 1 IoCs
resource yara_rule static1/unpack001/out.upx family_xorist -
Xorist family
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resource yara_rule sample upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource mbrlocker.exe unpack001/out.upx
Files
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mbrlocker.exe.exe windows:4 windows x86 arch:x86
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Sections
UPX0 Size: - Virtual size: 32KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 5KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 1024B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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out.upx.exe windows:4 windows x86 arch:x86
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Sections
.text Size: 6KB - Virtual size: 5KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 1KB - Virtual size: 14KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 1024B - Virtual size: 992B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE