Analysis
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max time kernel
152s -
max time network
169s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
24/08/2022, 15:53
Static task
static1
Behavioral task
behavioral1
Sample
Purchase Invoice.js
Resource
win7-20220812-en
General
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Target
Purchase Invoice.js
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Size
25KB
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MD5
9aca2a4ff7b8ac6189ecd97173dd8d90
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SHA1
b32bcdc674d7f27285a14291f5a12ba2b47f7102
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SHA256
d90554b8cf36add67ceaaedfdcab5507eca5951197aed9b2a851485736640779
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SHA512
c35295f93ea3b103a20ea4613d7c4392d09fd819fc785dc47e4799ffa1d7b125af616e29dd35505e5ed857eaefd4a37ef3892f4d6d92c567c1d80b099d6abaf4
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SSDEEP
768:dLqQvBf5oPGTyMJsijesb02xFIIxo8rUURwkUOV8igT8dHVT/l5Q:pAPsb02xFIIT/wkUOV8ige2
Malware Config
Extracted
vjw0rm
http://harold.jetos.com:3609
Signatures
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Blocklisted process makes network request 1 IoCs
flow pid Process 9 2320 wscript.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation wscript.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase Invoice.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Purchase Invoice.js wscript.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2320 wrote to memory of 2184 2320 wscript.exe 82 PID 2320 wrote to memory of 2184 2320 wscript.exe 82
Processes
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C:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\Purchase Invoice.js"1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:2320 -
C:\Windows\System32\wscript.exe"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\UWdKpbrkDF.js"2⤵PID:2184
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
6KB
MD51214283010a75e6bf30c48c99722ee00
SHA1baf927af2f820cf90a38bb0093097a18c7430fc6
SHA256a87f39cd2f3017d5ab87295a437448f840c972e8a92363008ce342ccd9a7c8df
SHA512ec8be42a8fb7ec0ea971fe266f6c7f8121e2c105df6b4ecb329c67960f3d1b638c49d5381cde81badd25e82dd76f33c08253e50f47bc822e808d47f20f9f1156