Analysis
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max time kernel
150s -
max time network
154s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
31-08-2021 15:22
Static task
static1
Behavioral task
behavioral1
Sample
INVOICE_73764683737____________.pdf.js
Resource
win7v20210408
Behavioral task
behavioral2
Sample
INVOICE_73764683737____________.pdf.js
Resource
win10v20210410
General
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Target
INVOICE_73764683737____________.pdf.js
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Size
205KB
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MD5
bdb8cdd6ed624b3dcbaab3d71df0f0e1
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SHA1
89318e4ecb5972b34aca0798dccc9f3c1eebcbce
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SHA256
519955052dbc780a8715890a897911b2131a541fa438cf4903a0e79e3d1976d2
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SHA512
e5a61f533688207e80e65b3fe02cb247cdce3225c055d7a36167742cb981ac932a221d85aa3bdf6ac6ed5a5b4d383b4c1e9e0c35b01263e4d0e25ca23d1fca81
Malware Config
Signatures
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Blocklisted process makes network request 16 IoCs
Processes:
WScript.exeflow pid process 6 1892 WScript.exe 7 1892 WScript.exe 8 1892 WScript.exe 10 1892 WScript.exe 11 1892 WScript.exe 12 1892 WScript.exe 14 1892 WScript.exe 15 1892 WScript.exe 16 1892 WScript.exe 18 1892 WScript.exe 19 1892 WScript.exe 20 1892 WScript.exe 22 1892 WScript.exe 23 1892 WScript.exe 24 1892 WScript.exe 26 1892 WScript.exe -
Drops startup file 2 IoCs
Processes:
WScript.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\GrZIvQNaOU.js WScript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\GrZIvQNaOU.js WScript.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
WScript.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run WScript.exe Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\GrZIvQNaOU.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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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1868 1644 WerFault.exe javaw.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
WerFault.exepid process 1868 WerFault.exe 1868 WerFault.exe 1868 WerFault.exe 1868 WerFault.exe 1868 WerFault.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
WerFault.exepid process 1868 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
WerFault.exedescription pid process Token: SeDebugPrivilege 1868 WerFault.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
wscript.exejavaw.exedescription pid process target process PID 784 wrote to memory of 1892 784 wscript.exe WScript.exe PID 784 wrote to memory of 1892 784 wscript.exe WScript.exe PID 784 wrote to memory of 1892 784 wscript.exe WScript.exe PID 784 wrote to memory of 1644 784 wscript.exe javaw.exe PID 784 wrote to memory of 1644 784 wscript.exe javaw.exe PID 784 wrote to memory of 1644 784 wscript.exe javaw.exe PID 1644 wrote to memory of 1868 1644 javaw.exe WerFault.exe PID 1644 wrote to memory of 1868 1644 javaw.exe WerFault.exe PID 1644 wrote to memory of 1868 1644 javaw.exe WerFault.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\INVOICE_73764683737____________.pdf.js1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\GrZIvQNaOU.js"2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
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C:\Program Files\Java\jre7\bin\javaw.exe"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\qcxklqje.txt"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 1644 -s 1403⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\GrZIvQNaOU.jsMD5
d90968188c569763a8539c1ea7ba2d6b
SHA14c8f3907474292c50561cfdfe469e926b5d27910
SHA25678ecdd57e761e4d0c9336643bcd95d5b5946c05efd752c5b803681f5083eb0bb
SHA512bb28eca56a5b57f8c0cdb1c86928598a13428dd652a0a37fc9039ecd57d2e17d80519c94cf2adf3f5fce37ee726c861a4c10d3f3e106b3fa08ef02375850b953
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C:\Users\Admin\AppData\Roaming\qcxklqje.txtMD5
2e458a59025b390fbdf7d3717314b507
SHA1d5a84f501bfa81682ebde5e31a68794140141785
SHA2566b723bd260b53c68c716ef218c78718d3e99ab4d4238a4bd823fd0cd6ec8007b
SHA5122b463bc4ef98264560abad47053549c463fc9ee098c97cd60d58c959ba67f4ddf2ca60856f6564802a9f056740fbedbb6bdc829388c136c13b334563465d1f22
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memory/784-60-0x000007FEFBAE1000-0x000007FEFBAE3000-memory.dmpFilesize
8KB
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memory/1644-63-0x0000000000000000-mapping.dmp
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memory/1868-66-0x0000000000000000-mapping.dmp
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memory/1868-68-0x0000000001CE0000-0x0000000001CE1000-memory.dmpFilesize
4KB
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memory/1892-61-0x0000000000000000-mapping.dmp