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
15/10/2024, 22:29
Static task
static1
Behavioral task
behavioral1
Sample
d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe
Resource
win10v2004-20241007-en
General
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Target
d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe
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Size
198KB
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MD5
1669832b36b31493c90462299a15ff87
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SHA1
5ea3ae9fda554d12d8ff14532e25572b31df4ca6
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SHA256
d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4
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SHA512
2f7bbf294ee17b0b4903bddf73960a52d48d6035cb930976e6925d1a7e82bf7fb22487ae588e425f19c28038570cb385198bb045abb7578dcba5cfb7f6643b24
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SSDEEP
3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf
Malware Config
Signatures
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Deletes itself 1 IoCs
pid Process 2584 wpvxozt.exe -
Executes dropped EXE 2 IoCs
pid Process 2584 wpvxozt.exe 2720 otc.exe -
Loads dropped DLL 7 IoCs
pid Process 3004 cmd.exe 3004 cmd.exe 2584 wpvxozt.exe 2720 otc.exe 2720 otc.exe 2720 otc.exe 2720 otc.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
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\yxijkt\\otc.exe \"c:\\Program Files\\yxijkt\\otcyi.dll\",Compliance" otc.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\i: otc.exe File opened (read-only) \??\l: otc.exe File opened (read-only) \??\s: otc.exe File opened (read-only) \??\u: otc.exe File opened (read-only) \??\b: otc.exe File opened (read-only) \??\e: otc.exe File opened (read-only) \??\o: otc.exe File opened (read-only) \??\p: otc.exe File opened (read-only) \??\j: otc.exe File opened (read-only) \??\n: otc.exe File opened (read-only) \??\q: otc.exe File opened (read-only) \??\r: otc.exe File opened (read-only) \??\t: otc.exe File opened (read-only) \??\v: otc.exe File opened (read-only) \??\w: otc.exe File opened (read-only) \??\g: otc.exe File opened (read-only) \??\m: otc.exe File opened (read-only) \??\k: otc.exe File opened (read-only) \??\x: otc.exe File opened (read-only) \??\y: otc.exe File opened (read-only) \??\z: otc.exe File opened (read-only) \??\a: otc.exe File opened (read-only) \??\h: otc.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.
description ioc Process File opened for modification \??\PHYSICALDRIVE0 otc.exe -
Drops file in Program Files directory 4 IoCs
description ioc Process File opened for modification \??\c:\Program Files\yxijkt wpvxozt.exe File created \??\c:\Program Files\yxijkt\otcyi.dll wpvxozt.exe File created \??\c:\Program Files\yxijkt\otc.exe wpvxozt.exe File opened for modification \??\c:\Program Files\yxijkt\otc.exe wpvxozt.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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language wpvxozt.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language otc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 3004 cmd.exe 2768 PING.EXE -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 otc.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString otc.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 2768 PING.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2720 otc.exe 2720 otc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2720 otc.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2756 d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe 2584 wpvxozt.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 2756 wrote to memory of 3004 2756 d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe 30 PID 2756 wrote to memory of 3004 2756 d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe 30 PID 2756 wrote to memory of 3004 2756 d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe 30 PID 2756 wrote to memory of 3004 2756 d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe 30 PID 3004 wrote to memory of 2768 3004 cmd.exe 32 PID 3004 wrote to memory of 2768 3004 cmd.exe 32 PID 3004 wrote to memory of 2768 3004 cmd.exe 32 PID 3004 wrote to memory of 2768 3004 cmd.exe 32 PID 3004 wrote to memory of 2584 3004 cmd.exe 33 PID 3004 wrote to memory of 2584 3004 cmd.exe 33 PID 3004 wrote to memory of 2584 3004 cmd.exe 33 PID 3004 wrote to memory of 2584 3004 cmd.exe 33 PID 2584 wrote to memory of 2720 2584 wpvxozt.exe 34 PID 2584 wrote to memory of 2720 2584 wpvxozt.exe 34 PID 2584 wrote to memory of 2720 2584 wpvxozt.exe 34 PID 2584 wrote to memory of 2720 2584 wpvxozt.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2756 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wpvxozt.exe "C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:3004 -
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:2768
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C:\Users\Admin\AppData\Local\Temp\wpvxozt.exeC:\Users\Admin\AppData\Local\Temp\\wpvxozt.exe "C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.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:2584 -
\??\c:\Program Files\yxijkt\otc.exe"c:\Program Files\yxijkt\otc.exe" "c:\Program Files\yxijkt\otcyi.dll",Compliance C:\Users\Admin\AppData\Local\Temp\wpvxozt.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:2720
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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
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Downloads
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Filesize
198KB
MD5e4fb0e9ac67da25a88617fa850a0a759
SHA1e21fe64bdb879bbe80b82039411462dba770d193
SHA256604ae4c9a91ccdd814e4d4c9f07fc485e142e40d4686169b56140a7b9c0905ea
SHA51275cd24a1c5d4ea40d3926c1e2834d0c1b6dd4417408ea0198d88b450944b5c067babeefef7c961ff798b9a0d0ad9d0c3b3625dc92cd036fb6d33c192dfbe3e3d
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Filesize
141KB
MD548bd8d59168be1125f963631e39a2a6d
SHA1de785f616eb034b36b9caeacc22f1c8a40efb539
SHA256a9604a52c6e0b069eff7ee6884ec9f7f5a4313d1d031838977ecac0e5f1d8085
SHA512f56f7e55e27c2c707c66716f43e7987799813287ece5b7a942beaae6364197d1a80045e845556512860e50547d9024847bad113b248d0842437e408978c028eb
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Filesize
43KB
MD551138beea3e2c21ec44d0932c71762a8
SHA18939cf35447b22dd2c6e6f443446acc1bf986d58
SHA2565ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124
SHA512794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d