Analysis
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max time kernel
77s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
24-03-2023 19:32
Static task
static1
Behavioral task
behavioral1
Sample
Copy.exe
Resource
win7-20230220-en
General
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Target
Copy.exe
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Size
1.1MB
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MD5
520ba96d18722d0d6dcc2f0250d52998
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SHA1
b2db2f9fa0fd3a2c74ef0b10dc684737eac9f3d9
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SHA256
ba4ffe8c2d64162b9f149242ecb7309a35886d05f5360da9e3e91a261a68c2ae
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SHA512
44510d3088c495e49c0f3c71defaf7b244146424413a6432ed2f424b9f965b762683d497b697ab240eb10dead17de77c7abd1cd38727e92762ccae4aff444977
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SSDEEP
24576:Ca+L5JM0ZZN8uX7QHUEjrgVo+ETCmqba0W+Tuu4gmmRt1ZGj:X+hjrX7Q0Ej4on23nTuu4gXR5G
Malware Config
Extracted
asyncrat
0.5.7B
Default
asyncgeneration1.duckdns.org:4404
AsyncMutex_6SI8OkPnk
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delay
3
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install
false
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install_folder
%AppData%
Signatures
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Async RAT payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4220-146-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Copy.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation Copy.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Copy.exedescription pid process target process PID 872 set thread context of 4220 872 Copy.exe Copy.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 7 IoCs
Processes:
Copy.exepowershell.exepowershell.exepid process 872 Copy.exe 872 Copy.exe 4976 powershell.exe 4492 powershell.exe 872 Copy.exe 4976 powershell.exe 4492 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
Copy.exepowershell.exepowershell.exeCopy.exedescription pid process Token: SeDebugPrivilege 872 Copy.exe Token: SeDebugPrivilege 4976 powershell.exe Token: SeDebugPrivilege 4492 powershell.exe Token: SeDebugPrivilege 4220 Copy.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
Copy.exedescription pid process target process PID 872 wrote to memory of 4976 872 Copy.exe powershell.exe PID 872 wrote to memory of 4976 872 Copy.exe powershell.exe PID 872 wrote to memory of 4976 872 Copy.exe powershell.exe PID 872 wrote to memory of 4492 872 Copy.exe powershell.exe PID 872 wrote to memory of 4492 872 Copy.exe powershell.exe PID 872 wrote to memory of 4492 872 Copy.exe powershell.exe PID 872 wrote to memory of 3044 872 Copy.exe schtasks.exe PID 872 wrote to memory of 3044 872 Copy.exe schtasks.exe PID 872 wrote to memory of 3044 872 Copy.exe schtasks.exe PID 872 wrote to memory of 4220 872 Copy.exe Copy.exe PID 872 wrote to memory of 4220 872 Copy.exe Copy.exe PID 872 wrote to memory of 4220 872 Copy.exe Copy.exe PID 872 wrote to memory of 4220 872 Copy.exe Copy.exe PID 872 wrote to memory of 4220 872 Copy.exe Copy.exe PID 872 wrote to memory of 4220 872 Copy.exe Copy.exe PID 872 wrote to memory of 4220 872 Copy.exe Copy.exe PID 872 wrote to memory of 4220 872 Copy.exe Copy.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Copy.exe"C:\Users\Admin\AppData\Local\Temp\Copy.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- 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\Local\Temp\Copy.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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\yXBzlrEBvIU.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\yXBzlrEBvIU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1BD5.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Copy.exe"C:\Users\Admin\AppData\Local\Temp\Copy.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.logFilesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractiveFilesize
18KB
MD529cb21eb5aea5105b64b80972b242b1d
SHA190936f3b0034e2c3fe4d7e7d6fe297e8e13f9d7e
SHA2560892433175e62070d59b14e5a19680f5e47be26261ea8937b86961a0d3fa579e
SHA512a18f7cf24a11081b7322aee3af71cc84cec718044d7de82d4584dfc0c6af2fcf0cf5ce0b1c5824609f515842b7ba04552a020891221eb1c75fe699220b1e0e34
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qkyrotta.1of.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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C:\Users\Admin\AppData\Local\Temp\tmp1BD5.tmpFilesize
1KB
MD564a0a51eae819d08b6a4ba6a9dda9213
SHA170cb481855870a14d37fb5b157fc4fb81c2bbcaa
SHA256177dc7d86c60150cf7a6824d9c4c6b8e9dcd7b4d607829cfe2351ceb05fd99c7
SHA5127d13bd219ff2bc17e317202d2d25ee5294a0b4e1fee8e34eea4645adb6dca5de26469f2fa776aa5bb9e2abb98896eef4e1476e3b0a4c3724789ccd268d53cc54
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memory/872-134-0x00000000078C0000-0x00000000078D0000-memory.dmpFilesize
64KB
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memory/872-135-0x0000000007F70000-0x0000000008514000-memory.dmpFilesize
5.6MB
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memory/872-136-0x0000000007A60000-0x0000000007AF2000-memory.dmpFilesize
584KB
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memory/872-137-0x0000000009150000-0x00000000091EC000-memory.dmpFilesize
624KB
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memory/872-133-0x00000000008A0000-0x00000000009C4000-memory.dmpFilesize
1.1MB
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memory/4220-213-0x0000000004DD0000-0x0000000004DE0000-memory.dmpFilesize
64KB
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memory/4220-205-0x0000000004DD0000-0x0000000004DE0000-memory.dmpFilesize
64KB
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memory/4220-146-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/4492-200-0x000000007EF80000-0x000000007EF90000-memory.dmpFilesize
64KB
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memory/4492-196-0x0000000007130000-0x000000000714A000-memory.dmpFilesize
104KB
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memory/4492-166-0x0000000002710000-0x0000000002720000-memory.dmpFilesize
64KB
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memory/4492-147-0x0000000004E10000-0x0000000004E76000-memory.dmpFilesize
408KB
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memory/4492-203-0x0000000007470000-0x000000000748A000-memory.dmpFilesize
104KB
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memory/4492-172-0x0000000005E30000-0x0000000005E4E000-memory.dmpFilesize
120KB
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memory/4492-156-0x0000000002710000-0x0000000002720000-memory.dmpFilesize
64KB
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memory/4492-175-0x0000000075080000-0x00000000750CC000-memory.dmpFilesize
304KB
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memory/4492-148-0x00000000056E0000-0x0000000005746000-memory.dmpFilesize
408KB
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memory/4492-199-0x0000000002710000-0x0000000002720000-memory.dmpFilesize
64KB
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memory/4492-197-0x00000000071A0000-0x00000000071AA000-memory.dmpFilesize
40KB
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memory/4976-173-0x0000000006770000-0x00000000067A2000-memory.dmpFilesize
200KB
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memory/4976-195-0x0000000007C20000-0x000000000829A000-memory.dmpFilesize
6.5MB
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memory/4976-198-0x0000000002A10000-0x0000000002A20000-memory.dmpFilesize
64KB
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memory/4976-187-0x0000000006710000-0x000000000672E000-memory.dmpFilesize
120KB
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memory/4976-174-0x0000000075080000-0x00000000750CC000-memory.dmpFilesize
304KB
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memory/4976-201-0x0000000007780000-0x0000000007816000-memory.dmpFilesize
600KB
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memory/4976-202-0x0000000007710000-0x000000000771E000-memory.dmpFilesize
56KB
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memory/4976-155-0x0000000002A10000-0x0000000002A20000-memory.dmpFilesize
64KB
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memory/4976-204-0x0000000007760000-0x0000000007768000-memory.dmpFilesize
32KB
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memory/4976-171-0x0000000002A10000-0x0000000002A20000-memory.dmpFilesize
64KB
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memory/4976-145-0x00000000051F0000-0x0000000005212000-memory.dmpFilesize
136KB
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memory/4976-143-0x0000000005410000-0x0000000005A38000-memory.dmpFilesize
6.2MB
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memory/4976-142-0x00000000028A0000-0x00000000028D6000-memory.dmpFilesize
216KB