Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
30-09-2024 21:03
Static task
static1
Behavioral task
behavioral1
Sample
2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
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Size
3.6MB
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MD5
2cf5cddefdb9208bea01442cad44896d
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SHA1
1b2f02ed71659f7fa21d8ac3ca9d18ee90b13097
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SHA256
9bca28e8dbaecaadc97b1806a97c0d6410b3a10b682e7cb8331693e06c77d8a1
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SHA512
e063b1ee8852260a741d56222acb5f0b7318d78d9bb9b0a54abedce97af7ae3c5492fc4136861f1c8c1b4dace87b1b694e15bcd9e4f0f27e5d6ef0a9a997840b
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SSDEEP
98304:ze3/NQcGeqxQat113OU/jIEeQfoR/IuOFVjUu5:zGmreqxV13FIF0wu
Malware Config
Extracted
xworm
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install_file
USB.exe
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pastebin_url
https://pastebin.com/raw/wEzYtSg6
Signatures
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Detect Xworm Payload 12 IoCs
Processes:
resource yara_rule behavioral2/memory/3144-12-0x0000000000400000-0x00000000004D0000-memory.dmp family_xworm behavioral2/memory/3144-11-0x0000000000400000-0x00000000004D0000-memory.dmp family_xworm behavioral2/memory/3144-15-0x0000000000400000-0x00000000004D0000-memory.dmp family_xworm behavioral2/memory/3144-14-0x0000000000400000-0x00000000004D0000-memory.dmp family_xworm C:\Users\Admin\AppData\Local\Temp\._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe family_xworm behavioral2/memory/5056-88-0x00000000001E0000-0x00000000001F4000-memory.dmp family_xworm behavioral2/memory/3144-147-0x0000000000400000-0x00000000004D0000-memory.dmp family_xworm behavioral2/memory/408-151-0x0000000000400000-0x00000000004D0000-memory.dmp family_xworm behavioral2/memory/408-265-0x0000000000400000-0x00000000004D0000-memory.dmp family_xworm behavioral2/memory/408-266-0x0000000000400000-0x00000000004D0000-memory.dmp family_xworm behavioral2/memory/408-268-0x0000000000400000-0x00000000004D0000-memory.dmp family_xworm behavioral2/memory/408-332-0x0000000000400000-0x00000000004D0000-memory.dmp family_xworm -
StormKitty
StormKitty is an open source info stealer written in C#.
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StormKitty payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/5056-269-0x000000001C220000-0x000000001C340000-memory.dmp family_stormkitty -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exeSynaptics.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe Key value queried \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation Synaptics.exe -
Executes dropped EXE 4 IoCs
Processes:
._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exeSynaptics.exeSynaptics.exe._cache_Synaptics.exepid process 5056 ._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 4768 Synaptics.exe 408 Synaptics.exe 5016 ._cache_Synaptics.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:
2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe" 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
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Suspicious use of SetThreadContext 2 IoCs
Processes:
2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exeSynaptics.exedescription pid process target process PID 3908 set thread context of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 4768 set thread context of 408 4768 Synaptics.exe Synaptics.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exeSynaptics.exeSynaptics.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Synaptics.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Synaptics.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Modifies registry class 2 IoCs
Processes:
2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exeSynaptics.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ Synaptics.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 832 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe._cache_Synaptics.exedescription pid process Token: SeDebugPrivilege 5056 ._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe Token: SeDebugPrivilege 5016 ._cache_Synaptics.exe -
Suspicious use of SetWindowsHookEx 7 IoCs
Processes:
EXCEL.EXEpid process 832 EXCEL.EXE 832 EXCEL.EXE 832 EXCEL.EXE 832 EXCEL.EXE 832 EXCEL.EXE 832 EXCEL.EXE 832 EXCEL.EXE -
Suspicious use of WriteProcessMemory 29 IoCs
Processes:
2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exeSynaptics.exeSynaptics.exedescription pid process target process PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3908 wrote to memory of 3144 3908 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3144 wrote to memory of 5056 3144 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe ._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3144 wrote to memory of 5056 3144 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe ._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe PID 3144 wrote to memory of 4768 3144 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe Synaptics.exe PID 3144 wrote to memory of 4768 3144 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe Synaptics.exe PID 3144 wrote to memory of 4768 3144 2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 4768 wrote to memory of 408 4768 Synaptics.exe Synaptics.exe PID 408 wrote to memory of 5016 408 Synaptics.exe ._cache_Synaptics.exe PID 408 wrote to memory of 5016 408 Synaptics.exe ._cache_Synaptics.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3908 -
C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3144 -
C:\Users\Admin\AppData\Local\Temp\._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"C:\Users\Admin\AppData\Local\Temp\._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5056
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C:\ProgramData\Synaptics\Synaptics.exe"C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4768 -
C:\ProgramData\Synaptics\Synaptics.exe"C:\ProgramData\Synaptics\Synaptics.exe"4⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:408 -
C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe"C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe"5⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5016
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:832
Network
MITRE ATT&CK Enterprise v15
Privilege 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
3.6MB
MD52cf5cddefdb9208bea01442cad44896d
SHA11b2f02ed71659f7fa21d8ac3ca9d18ee90b13097
SHA2569bca28e8dbaecaadc97b1806a97c0d6410b3a10b682e7cb8331693e06c77d8a1
SHA512e063b1ee8852260a741d56222acb5f0b7318d78d9bb9b0a54abedce97af7ae3c5492fc4136861f1c8c1b4dace87b1b694e15bcd9e4f0f27e5d6ef0a9a997840b
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C:\Users\Admin\AppData\Local\Temp\._cache_2024-09-30_2cf5cddefdb9208bea01442cad44896d_avoslocker_hijackloader.exe
Filesize56KB
MD558309af0f1139095eb1eaabcd725063c
SHA1f7d419e58597f9e3babac8e4f0066fd0f1ddf5ed
SHA2566acae1df5780f41a9b3d291aacca815f55a4a82b2a4bbfb275cce13a05bd2311
SHA512057e53ced55171d21f67f4464845290710a5c8072632e05f98683e2d78d3b6a06dd94d190e8a4965b134386e5d9040fb6891eb84ff1c9b09f42fab8ce9512a03
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Filesize
23KB
MD55367a5b80cd2d00ff07075cd24070039
SHA150e6d29a728779c79075a0aa8605ca1bf7863d97
SHA256b7ddc528d3047a85fca2217bebb9555ca55389c4316856dc7a60ab9c50df4508
SHA512bbbc71758356ad61a2ddc824c201bef6a560c7dd7a3dec43e44e3ce95857d6bb259c428db92d50044192389246e4af6d565164a28ed86e4fa6701ac2faa27c75
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Filesize
17KB
MD5e566fc53051035e1e6fd0ed1823de0f9
SHA100bc96c48b98676ecd67e81a6f1d7754e4156044
SHA2568e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15
SHA512a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04