Analysis
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max time kernel
146s -
max time network
148s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
14-01-2022 09:16
Static task
static1
Behavioral task
behavioral1
Sample
f0b1460964ead846d1cf3c41026e8cba.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
f0b1460964ead846d1cf3c41026e8cba.exe
Resource
win10-en-20211208
General
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Target
f0b1460964ead846d1cf3c41026e8cba.exe
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Size
330KB
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MD5
f0b1460964ead846d1cf3c41026e8cba
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SHA1
75cded270a8cc13c3fbd170a71b441884a11ba23
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SHA256
4cbf005d08aae507c2d7aca647d2f95738d8610d7fdfbe8944010408695b7c1f
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SHA512
0564ffe06f37b3cfe335bda89b0685f7da8552630bb8ff0dce1a59682e4ae89312ebca8b51eab0b7660f54c5697580c0d59a593b63d5a0312b4a2ef74af58d24
Malware Config
Extracted
asyncrat
0.5.7B
1
212.193.30.54:8754
gyQ12!.,=FDpsdf2_@
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anti_vm
false
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bsod
false
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delay
3
-
install
false
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install_folder
%AppData%
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pastebin_config
null
Signatures
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Async RAT payload 6 IoCs
Processes:
resource yara_rule behavioral1/memory/852-63-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/852-64-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/852-65-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/852-66-0x000000000040C6BE-mapping.dmp asyncrat behavioral1/memory/852-71-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat behavioral1/memory/852-72-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat -
Executes dropped EXE 1 IoCs
Processes:
RegAsm.exepid process 852 RegAsm.exe -
Loads dropped DLL 2 IoCs
Processes:
f0b1460964ead846d1cf3c41026e8cba.exeRegAsm.exepid process 1676 f0b1460964ead846d1cf3c41026e8cba.exe 852 RegAsm.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
f0b1460964ead846d1cf3c41026e8cba.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\gyt = "\"C:\\Users\\Admin\\AppData\\Roaming\\gyt.exe\"" f0b1460964ead846d1cf3c41026e8cba.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
f0b1460964ead846d1cf3c41026e8cba.exedescription pid process target process PID 1676 set thread context of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
f0b1460964ead846d1cf3c41026e8cba.exepid process 1676 f0b1460964ead846d1cf3c41026e8cba.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
f0b1460964ead846d1cf3c41026e8cba.exedescription pid process Token: SeDebugPrivilege 1676 f0b1460964ead846d1cf3c41026e8cba.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
f0b1460964ead846d1cf3c41026e8cba.exedescription pid process target process PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe PID 1676 wrote to memory of 852 1676 f0b1460964ead846d1cf3c41026e8cba.exe RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f0b1460964ead846d1cf3c41026e8cba.exe"C:\Users\Admin\AppData\Local\Temp\f0b1460964ead846d1cf3c41026e8cba.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\RegAsm.exeC:\Users\Admin\AppData\Local\Temp\RegAsm.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
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\RegAsm.exeMD5
b58b926c3574d28d5b7fdd2ca3ec30d5
SHA1d260c4ffd603a9cfc057fcb83d678b1cecdf86f9
SHA2566e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3
SHA512b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab
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C:\Users\Admin\AppData\Local\Temp\RegAsm.exeMD5
b58b926c3574d28d5b7fdd2ca3ec30d5
SHA1d260c4ffd603a9cfc057fcb83d678b1cecdf86f9
SHA2566e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3
SHA512b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab
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\Users\Admin\AppData\Local\Temp\RegAsm.exeMD5
b58b926c3574d28d5b7fdd2ca3ec30d5
SHA1d260c4ffd603a9cfc057fcb83d678b1cecdf86f9
SHA2566e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3
SHA512b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab
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\Users\Admin\AppData\Local\Temp\RegAsm.exeMD5
b58b926c3574d28d5b7fdd2ca3ec30d5
SHA1d260c4ffd603a9cfc057fcb83d678b1cecdf86f9
SHA2566e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3
SHA512b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab
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memory/852-63-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/852-66-0x000000000040C6BE-mapping.dmp
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memory/852-61-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/852-62-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/852-73-0x0000000004E90000-0x0000000004E91000-memory.dmpFilesize
4KB
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memory/852-64-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/852-65-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/852-72-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/852-71-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/1676-58-0x0000000075021000-0x0000000075023000-memory.dmpFilesize
8KB
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memory/1676-56-0x0000000001200000-0x0000000001258000-memory.dmpFilesize
352KB
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memory/1676-57-0x0000000000410000-0x0000000000411000-memory.dmpFilesize
4KB
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memory/1676-59-0x0000000000600000-0x0000000000646000-memory.dmpFilesize
280KB
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memory/1676-55-0x0000000001200000-0x0000000001258000-memory.dmpFilesize
352KB