Analysis
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max time kernel
42s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
24-11-2022 10:09
Static task
static1
Behavioral task
behavioral1
Sample
DocRepair/DocRepair.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
DocRepair/DocRepair.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral3
Sample
DocRepair/当客软件园.url
Resource
win7-20220901-en
Behavioral task
behavioral4
Sample
DocRepair/当客软件园.url
Resource
win10v2004-20220812-en
General
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Target
DocRepair/DocRepair.exe
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Size
594KB
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MD5
19bd9c6b51d5dc4960a9a0981b61bdea
-
SHA1
54cdf79231ff72c5f467b8f37259c05180eddb06
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SHA256
0a4568e5d35750a9b9ba8e66a31c5f7db96517c55f06e6539cae94356c6739b6
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SHA512
4d1304582523cbade0847b9e19cd293ca3c7ec70de5909c2ef7ccba517d492486c62042e4e7187e9ecf5edc7474306b794eb5727f7899d45bf156d2e1818b1f2
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SSDEEP
12288:jh+V08ZQ1dnihUHXVmSZPrChO4VXi6ihll0CMiu76Z/V9342rGwiJv22FJblIgc4:jh+VHZQ7VHXVmS1rChPSZ9rMiuAV9Nq9
Malware Config
Signatures
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Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
DocRepair.exedescription ioc process File opened for modification \??\PhysicalDrive0 DocRepair.exe -
Modifies registry class 3 IoCs
Processes:
DocRepair.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key DocRepair.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ DocRepair.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" DocRepair.exe