Analysis
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max time kernel
130s -
max time network
135s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
16-08-2022 14:48
Static task
static1
Behavioral task
behavioral1
Sample
JtBr.exe
Resource
win7-20220812-en
General
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Target
JtBr.exe
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Size
744KB
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MD5
2274229a80d18978482606d9f1e90803
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SHA1
7c6bcb372543c6a42f8888c1eb11c27ed2a7fd98
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SHA256
cdee2421636a518cb027f5670691b8f879676a67516d7fb525432ca74efe6bee
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SHA512
6806daa7f21737e2721b061fa89c166b1615bf0e11400db657dbfd74b6c91d698e929dc0289efc4e7c9e07e48bb972db91c7d485dc56ce9bb9bf60c92212d0ab
Malware Config
Extracted
netwire
185.140.53.61:3363
185.140.53.61:3365
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activex_autorun
false
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copy_executable
false
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delete_original
false
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host_id
HostId-%Rand%
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keylogger_dir
%AppData%\Logs\
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lock_executable
false
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offline_keylogger
true
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password
move4ward
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registry_autorun
false
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use_mutex
false
Signatures
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NetWire RAT payload 9 IoCs
Processes:
resource yara_rule behavioral1/memory/524-69-0x0000000000400000-0x0000000000433000-memory.dmp netwire behavioral1/memory/524-70-0x0000000000400000-0x0000000000433000-memory.dmp netwire behavioral1/memory/524-71-0x0000000000400000-0x0000000000433000-memory.dmp netwire behavioral1/memory/524-73-0x0000000000400000-0x0000000000433000-memory.dmp netwire behavioral1/memory/524-74-0x0000000000400000-0x0000000000433000-memory.dmp netwire behavioral1/memory/524-75-0x000000000040242D-mapping.dmp netwire behavioral1/memory/524-78-0x0000000000400000-0x0000000000433000-memory.dmp netwire behavioral1/memory/524-80-0x0000000000400000-0x0000000000433000-memory.dmp netwire behavioral1/memory/524-82-0x0000000000400000-0x0000000000433000-memory.dmp netwire -
Suspicious use of SetThreadContext 1 IoCs
Processes:
JtBr.exedescription pid process target process PID 968 set thread context of 524 968 JtBr.exe JtBr.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
powershell.exepid process 1700 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 1700 powershell.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
JtBr.exedescription pid process target process PID 968 wrote to memory of 1700 968 JtBr.exe powershell.exe PID 968 wrote to memory of 1700 968 JtBr.exe powershell.exe PID 968 wrote to memory of 1700 968 JtBr.exe powershell.exe PID 968 wrote to memory of 1700 968 JtBr.exe powershell.exe PID 968 wrote to memory of 952 968 JtBr.exe schtasks.exe PID 968 wrote to memory of 952 968 JtBr.exe schtasks.exe PID 968 wrote to memory of 952 968 JtBr.exe schtasks.exe PID 968 wrote to memory of 952 968 JtBr.exe schtasks.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe PID 968 wrote to memory of 524 968 JtBr.exe JtBr.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\JtBr.exe"C:\Users\Admin\AppData\Local\Temp\JtBr.exe"1⤵
- 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\mRIcLJAAswv.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mRIcLJAAswv" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC0FF.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\JtBr.exe"C:\Users\Admin\AppData\Local\Temp\JtBr.exe"2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpC0FF.tmpFilesize
1KB
MD5ea2543652412876cd0d87336336e98cd
SHA1f77887f1e1da115b07edc4b152c4734ba6e5b6e5
SHA256db9c166be6627adc257923e1528cd0ff1df4211aab499ae4166d297052a45174
SHA512e6b33c12839b4c5c2a4c998acffb6a86ab600ac30cb5dcfdfb5e2f2a73c187075b96f9eaa63cde7c25159bb0e2d4b425647ea92854c052b14b55b9b6f5372c44
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memory/524-73-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/524-71-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/524-69-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/524-67-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/524-80-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/524-78-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/524-75-0x000000000040242D-mapping.dmp
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memory/524-70-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/524-65-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/524-82-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/524-74-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/524-64-0x0000000000400000-0x0000000000433000-memory.dmpFilesize
204KB
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memory/952-60-0x0000000000000000-mapping.dmp
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memory/968-55-0x0000000076831000-0x0000000076833000-memory.dmpFilesize
8KB
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memory/968-54-0x0000000000D70000-0x0000000000E30000-memory.dmpFilesize
768KB
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memory/968-57-0x0000000000420000-0x000000000042C000-memory.dmpFilesize
48KB
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memory/968-63-0x00000000043E0000-0x0000000004418000-memory.dmpFilesize
224KB
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memory/968-56-0x0000000000400000-0x0000000000418000-memory.dmpFilesize
96KB
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memory/968-58-0x0000000006110000-0x000000000618E000-memory.dmpFilesize
504KB
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memory/1700-79-0x000000006F370000-0x000000006F91B000-memory.dmpFilesize
5.7MB
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memory/1700-59-0x0000000000000000-mapping.dmp
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memory/1700-81-0x000000006F370000-0x000000006F91B000-memory.dmpFilesize
5.7MB