Analysis
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max time kernel
162s -
max time network
164s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
22-06-2022 20:00
Static task
static1
Behavioral task
behavioral1
Sample
2781f23530d6a69824ab8f23ec40595d.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
2781f23530d6a69824ab8f23ec40595d.exe
Resource
win10v2004-20220414-en
General
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Target
2781f23530d6a69824ab8f23ec40595d.exe
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Size
131KB
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MD5
2781f23530d6a69824ab8f23ec40595d
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SHA1
95762c6bb48f4669c2d91bde8f4ee43cce0dbd5c
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SHA256
11f4e9be4a633369d2dac63abff03111b576cbd4c3ca8a083a4343796fd2eed0
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SHA512
6906bde845d2ca3577d72358cf8288d2956b839f0129d0b61dc5099d2814b9a6a75f92783a409517df5bb9fded1298ae798ebfff7f64d6a3629a80b79e7cc2dc
Malware Config
Extracted
bitrat
1.38
mcowduciush.duckdns.org:1880
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communication_password
202cb962ac59075b964b07152d234b70
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tor_process
tor
Signatures
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suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)
suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)
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Processes:
resource yara_rule behavioral2/memory/1660-140-0x0000000000400000-0x00000000007E4000-memory.dmp upx behavioral2/memory/1660-141-0x0000000000400000-0x00000000007E4000-memory.dmp upx behavioral2/memory/1660-142-0x0000000000400000-0x00000000007E4000-memory.dmp upx behavioral2/memory/1660-143-0x0000000000400000-0x00000000007E4000-memory.dmp upx behavioral2/memory/1660-144-0x0000000000400000-0x00000000007E4000-memory.dmp upx behavioral2/memory/1660-147-0x0000000000400000-0x00000000007E4000-memory.dmp upx -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2781f23530d6a69824ab8f23ec40595d.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation 2781f23530d6a69824ab8f23ec40595d.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
2781f23530d6a69824ab8f23ec40595d.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rzohbwtvp = "\"C:\\Users\\Admin\\AppData\\Roaming\\Azzjb\\Rzohbwtvp.exe\"" 2781f23530d6a69824ab8f23ec40595d.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
Processes:
InstallUtil.exepid process 1660 InstallUtil.exe 1660 InstallUtil.exe 1660 InstallUtil.exe 1660 InstallUtil.exe 1660 InstallUtil.exe 1660 InstallUtil.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
2781f23530d6a69824ab8f23ec40595d.exedescription pid process target process PID 4104 set thread context of 1660 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 5004 timeout.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
2781f23530d6a69824ab8f23ec40595d.exepid process 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe 4104 2781f23530d6a69824ab8f23ec40595d.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2781f23530d6a69824ab8f23ec40595d.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 4104 2781f23530d6a69824ab8f23ec40595d.exe Token: SeShutdownPrivilege 1660 InstallUtil.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
InstallUtil.exepid process 1660 InstallUtil.exe 1660 InstallUtil.exe -
Suspicious use of WriteProcessMemory 22 IoCs
Processes:
2781f23530d6a69824ab8f23ec40595d.execmd.exedescription pid process target process PID 4104 wrote to memory of 344 4104 2781f23530d6a69824ab8f23ec40595d.exe cmd.exe PID 4104 wrote to memory of 344 4104 2781f23530d6a69824ab8f23ec40595d.exe cmd.exe PID 4104 wrote to memory of 344 4104 2781f23530d6a69824ab8f23ec40595d.exe cmd.exe PID 344 wrote to memory of 5004 344 cmd.exe timeout.exe PID 344 wrote to memory of 5004 344 cmd.exe timeout.exe PID 344 wrote to memory of 5004 344 cmd.exe timeout.exe PID 4104 wrote to memory of 1072 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1072 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1072 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 4220 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 4220 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 4220 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1644 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1644 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1644 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1660 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1660 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1660 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1660 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1660 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1660 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe PID 4104 wrote to memory of 1660 4104 2781f23530d6a69824ab8f23ec40595d.exe InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2781f23530d6a69824ab8f23ec40595d.exe"C:\Users\Admin\AppData\Local\Temp\2781f23530d6a69824ab8f23ec40595d.exe"1⤵
- Checks computer location settings
- 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:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout 202⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 203⤵
- Delays execution with timeout.exe
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/344-134-0x0000000000000000-mapping.dmp
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memory/1072-136-0x0000000000000000-mapping.dmp
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memory/1644-138-0x0000000000000000-mapping.dmp
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memory/1660-145-0x0000000074690000-0x00000000746C9000-memory.dmpFilesize
228KB
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memory/1660-146-0x0000000074A10000-0x0000000074A49000-memory.dmpFilesize
228KB
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memory/1660-150-0x0000000074A10000-0x0000000074A49000-memory.dmpFilesize
228KB
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memory/1660-149-0x0000000074690000-0x00000000746C9000-memory.dmpFilesize
228KB
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memory/1660-148-0x00000000747A0000-0x00000000747D9000-memory.dmpFilesize
228KB
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memory/1660-147-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3.9MB
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memory/1660-139-0x0000000000000000-mapping.dmp
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memory/1660-140-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3.9MB
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memory/1660-141-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3.9MB
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memory/1660-142-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3.9MB
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memory/1660-143-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3.9MB
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memory/1660-144-0x0000000000400000-0x00000000007E4000-memory.dmpFilesize
3.9MB
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memory/4104-130-0x0000000000260000-0x0000000000286000-memory.dmpFilesize
152KB
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memory/4104-133-0x0000000004CD0000-0x0000000004CDA000-memory.dmpFilesize
40KB
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memory/4104-131-0x00000000052A0000-0x0000000005844000-memory.dmpFilesize
5.6MB
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memory/4104-132-0x0000000004C20000-0x0000000004CB2000-memory.dmpFilesize
584KB
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memory/4220-137-0x0000000000000000-mapping.dmp
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memory/5004-135-0x0000000000000000-mapping.dmp