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Overview
overview
10Static
static
Claim_PE84.vhd
windows7-x64
3Claim_PE84.vhd
windows10-2004-x64
3Claim.lnk
windows7-x64
10Claim.lnk
windows10-2004-x64
10respondent...nt.txt
windows7-x64
1respondent...nt.txt
windows10-2004-x64
1respondent...ar.dll
windows7-x64
10respondent...ar.dll
windows10-2004-x64
10respondent...em.cmd
windows7-x64
1respondent...em.cmd
windows10-2004-x64
1respondent...ct.cmd
windows7-x64
1respondent...ct.cmd
windows10-2004-x64
1Analysis
-
max time kernel
151s -
max time network
180s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
02/12/2022, 17:00
Static task
static1
Behavioral task
behavioral1
Sample
Claim_PE84.vhd
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
Claim_PE84.vhd
Resource
win10v2004-20221111-en
Behavioral task
behavioral3
Sample
Claim.lnk
Resource
win7-20220901-en
Behavioral task
behavioral4
Sample
Claim.lnk
Resource
win10v2004-20220812-en
Behavioral task
behavioral5
Sample
respondents/advisement.txt
Resource
win7-20221111-en
Behavioral task
behavioral6
Sample
respondents/advisement.txt
Resource
win10v2004-20221111-en
Behavioral task
behavioral7
Sample
respondents/crossbar.dll
Resource
win7-20220812-en
Behavioral task
behavioral8
Sample
respondents/crossbar.dll
Resource
win10v2004-20220901-en
Behavioral task
behavioral9
Sample
respondents/ibidem.cmd
Resource
win7-20221111-en
Behavioral task
behavioral10
Sample
respondents/ibidem.cmd
Resource
win10v2004-20220901-en
Behavioral task
behavioral11
Sample
respondents/suspect.cmd
Resource
win7-20220812-en
Behavioral task
behavioral12
Sample
respondents/suspect.cmd
Resource
win10v2004-20220812-en
General
-
Target
Claim_PE84.vhd
-
Size
2.0MB
-
MD5
2fe68553beb0a7b084f1b349d6551d9c
-
SHA1
c7e8f7b9313e876b10623840989fb07c00203930
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SHA256
edcb8d8e80eb826ec95ed9ccdc1d4470c3edd1782350187fc9bcd776c6d96095
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SHA512
cf9d306a0948217c32dd865a1926c18405cb0e24aef2eadd4bdd81bf9376783fa1a44de90ddc0926e4e6f41094cff99869b325b6d22a200f8f8161ee177fc0a1
-
SSDEEP
24576:/wWw8wewswUwBw6gwsw3wTOZqHk2JajfRO8:/wWw8wewswUwBw6gwsw3waZaUY8
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 10 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.vhd rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_auto_file\shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_auto_file\shell\Read\command rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_auto_file\ rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.vhd\ = "vhd_auto_file" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_auto_file\shell\Read rundll32.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 632 AcroRd32.exe 632 AcroRd32.exe 632 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 608 wrote to memory of 472 608 cmd.exe 28 PID 608 wrote to memory of 472 608 cmd.exe 28 PID 608 wrote to memory of 472 608 cmd.exe 28 PID 472 wrote to memory of 632 472 rundll32.exe 29 PID 472 wrote to memory of 632 472 rundll32.exe 29 PID 472 wrote to memory of 632 472 rundll32.exe 29 PID 472 wrote to memory of 632 472 rundll32.exe 29
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\Claim_PE84.vhd1⤵
- Suspicious use of WriteProcessMemory
PID:608 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Claim_PE84.vhd2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:472 -
C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\Claim_PE84.vhd"3⤵
- Suspicious use of SetWindowsHookEx
PID:632
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