Analysis
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max time kernel
142s -
max time network
146s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
10-11-2024 01:33
Static task
static1
Behavioral task
behavioral1
Sample
100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe
Resource
win10v2004-20241007-en
General
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Target
100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe
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Size
158KB
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MD5
c143a3e85666d159b6ebe98f4bfec793
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SHA1
2d8a854a40a99e0f8e3770b29c8685cfaf7290ee
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SHA256
100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc
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SHA512
2d1b9105e015ab26b80a4fd6cf88dbdb7b6e98bafc641c0d88eac3c24b3dbb2bd9e4e03f102a038cb6c5b8ca4a3f2a4fbf0111e6f1a6179b2d494b6dd03c52ed
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SSDEEP
3072:oZpYg19EeiLLmjempGuCYooEK1JWaCItULG3rt2Wcora4dI:OPjEl6jLiQ1JW+Oy3p/
Malware Config
Signatures
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ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
Processes:
resource yara_rule \??\c:\Program Files\ynrwl\aavrvgzu.dll acprotect -
Deletes itself 1 IoCs
Processes:
hotta.exepid process 2844 hotta.exe -
Executes dropped EXE 2 IoCs
Processes:
hotta.exeaavrvgzu.exepid process 2844 hotta.exe 2696 aavrvgzu.exe -
Loads dropped DLL 7 IoCs
Processes:
cmd.exehotta.exeaavrvgzu.exepid process 1812 cmd.exe 1812 cmd.exe 2844 hotta.exe 2696 aavrvgzu.exe 2696 aavrvgzu.exe 2696 aavrvgzu.exe 2696 aavrvgzu.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
aavrvgzu.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Linycpy = "c:\\Program Files\\ynrwl\\aavrvgzu.exe \"c:\\Program Files\\ynrwl\\aavrvgzu.dll\",SetHandle" aavrvgzu.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
aavrvgzu.exedescription ioc process File opened (read-only) \??\a: aavrvgzu.exe File opened (read-only) \??\h: aavrvgzu.exe File opened (read-only) \??\o: aavrvgzu.exe File opened (read-only) \??\z: aavrvgzu.exe File opened (read-only) \??\e: aavrvgzu.exe File opened (read-only) \??\p: aavrvgzu.exe File opened (read-only) \??\q: aavrvgzu.exe File opened (read-only) \??\s: aavrvgzu.exe File opened (read-only) \??\t: aavrvgzu.exe File opened (read-only) \??\u: aavrvgzu.exe File opened (read-only) \??\w: aavrvgzu.exe File opened (read-only) \??\x: aavrvgzu.exe File opened (read-only) \??\b: aavrvgzu.exe File opened (read-only) \??\g: aavrvgzu.exe File opened (read-only) \??\i: aavrvgzu.exe File opened (read-only) \??\j: aavrvgzu.exe File opened (read-only) \??\k: aavrvgzu.exe File opened (read-only) \??\l: aavrvgzu.exe File opened (read-only) \??\m: aavrvgzu.exe File opened (read-only) \??\n: aavrvgzu.exe File opened (read-only) \??\r: aavrvgzu.exe File opened (read-only) \??\v: aavrvgzu.exe File opened (read-only) \??\y: aavrvgzu.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
Processes:
aavrvgzu.exedescription ioc process File opened for modification \??\PHYSICALDRIVE0 aavrvgzu.exe -
Drops file in Program Files directory 4 IoCs
Processes:
hotta.exedescription ioc process File opened for modification \??\c:\Program Files\ynrwl\aavrvgzu.exe hotta.exe File opened for modification \??\c:\Program Files\ynrwl hotta.exe File created \??\c:\Program Files\ynrwl\aavrvgzu.dll hotta.exe File created \??\c:\Program Files\ynrwl\aavrvgzu.exe hotta.exe -
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
cmd.exePING.EXEhotta.exeaavrvgzu.exe100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hotta.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language aavrvgzu.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
Processes:
PING.EXEcmd.exepid process 1996 PING.EXE 1812 cmd.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
aavrvgzu.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 aavrvgzu.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString aavrvgzu.exe -
Runs ping.exe 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
aavrvgzu.exepid process 2696 aavrvgzu.exe 2696 aavrvgzu.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
aavrvgzu.exedescription pid process Token: SeDebugPrivilege 2696 aavrvgzu.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exehotta.exepid process 2308 100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe 2844 hotta.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.execmd.exehotta.exedescription pid process target process PID 2308 wrote to memory of 1812 2308 100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe cmd.exe PID 2308 wrote to memory of 1812 2308 100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe cmd.exe PID 2308 wrote to memory of 1812 2308 100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe cmd.exe PID 2308 wrote to memory of 1812 2308 100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe cmd.exe PID 1812 wrote to memory of 1996 1812 cmd.exe PING.EXE PID 1812 wrote to memory of 1996 1812 cmd.exe PING.EXE PID 1812 wrote to memory of 1996 1812 cmd.exe PING.EXE PID 1812 wrote to memory of 1996 1812 cmd.exe PING.EXE PID 1812 wrote to memory of 2844 1812 cmd.exe hotta.exe PID 1812 wrote to memory of 2844 1812 cmd.exe hotta.exe PID 1812 wrote to memory of 2844 1812 cmd.exe hotta.exe PID 1812 wrote to memory of 2844 1812 cmd.exe hotta.exe PID 2844 wrote to memory of 2696 2844 hotta.exe aavrvgzu.exe PID 2844 wrote to memory of 2696 2844 hotta.exe aavrvgzu.exe PID 2844 wrote to memory of 2696 2844 hotta.exe aavrvgzu.exe PID 2844 wrote to memory of 2696 2844 hotta.exe aavrvgzu.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe"C:\Users\Admin\AppData\Local\Temp\100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2308 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hotta.exe "C:\Users\Admin\AppData\Local\Temp\100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe"2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:1812 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:1996 -
C:\Users\Admin\AppData\Local\Temp\hotta.exeC:\Users\Admin\AppData\Local\Temp\\hotta.exe "C:\Users\Admin\AppData\Local\Temp\100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2844 -
\??\c:\Program Files\ynrwl\aavrvgzu.exe"c:\Program Files\ynrwl\aavrvgzu.exe" "c:\Program Files\ynrwl\aavrvgzu.dll",SetHandle C:\Users\Admin\AppData\Local\Temp\hotta.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2696
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
128KB
MD57e4aa5c21616797640d145c6e2e00c00
SHA1234c825a2fb2977112f1f2980b38610068ee7752
SHA25636875f67e214bab64df24f5174ec850f4f9a2ffccdf6ff3c04e7e174a0382fe3
SHA512269362d7880ba4da2bf4ea1f5decbee8d5ed47c720efc5e7b1c62a29d848de5bdb2077102b9092091e3dfd067c7cc2934dbbc0e9ed5dd21b795ee6cf361bd5e8
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Filesize
43KB
MD551138beea3e2c21ec44d0932c71762a8
SHA18939cf35447b22dd2c6e6f443446acc1bf986d58
SHA2565ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d
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Filesize
158KB
MD5629c5a2717d5fb8d23fe99413ff4c31e
SHA1a8028f7f0492678fd5271f9a2e5a8f0f741315c9
SHA256ba83ed6687577ad155df49e85fb037c5e25d2d9162a3f1499b8153d2498f5826
SHA5125c2535c3d3a71a0f5296c13f81543a14f6469124cdb0c4a478f415e8aa232b5ed11163456914a00e194174196e2320ec355f2d31ea07894bee34a07120556220