Analysis
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max time kernel
94s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
26-11-2024 02:28
Behavioral task
behavioral1
Sample
PepperX.exe
Resource
win7-20240903-en
windows7-x64
Behavioral task
behavioral2
Sample
PepperX.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
General
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Target
PepperX.exe
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Size
146KB
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MD5
39c9477cf131ca5ccc05c8871c0e10e6
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SHA1
07b2581b2cb41053d09c4bb896aaabc1d28f2a7b
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SHA256
939281eac1c6e5aa2e4238a1e545e67b2609c15f517474b2a5133bb64fe9c1eb
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SHA512
689fd585232031f746b1573d3ed66ac329420611d4e1092ce6952b49ab0c168091726bd02189a4e183d1196ced4f51953e4eb25a5219a36f86d8f6761da9f129
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SSDEEP
1536:xzICS4AAwczUUf8y8gvMH+1zGSNAojMP95D1xDqk3sA9atm8z+L8QBfuSoyAMjwT:KqJogYkcSNm9V7D7352v+L8DnyAewT
Malware Config
Signatures
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Renames multiple (626) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
E9D4.tmpdescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation E9D4.tmp -
Deletes itself 1 IoCs
Processes:
E9D4.tmppid Process 4044 E9D4.tmp -
Executes dropped EXE 1 IoCs
Processes:
E9D4.tmppid Process 4044 E9D4.tmp -
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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Drops desktop.ini file(s) 2 IoCs
Processes:
PepperX.exedescription ioc Process File opened for modification C:\$Recycle.Bin\S-1-5-21-3227495264-2217614367-4027411560-1000\desktop.ini PepperX.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3227495264-2217614367-4027411560-1000\desktop.ini PepperX.exe -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
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Drops file in System32 directory 4 IoCs
Processes:
splwow64.exeprintfilterpipelinesvc.exedescription ioc Process File created C:\Windows\system32\spool\PRINTERS\00002.SPL splwow64.exe File created C:\Windows\system32\spool\PRINTERS\PPyj60i3wwrwdwbbj1esf0vwh9b.TMP printfilterpipelinesvc.exe File created C:\Windows\system32\spool\PRINTERS\PPhe7ynyq6ej660bgncd4z8j2pb.TMP printfilterpipelinesvc.exe File created C:\Windows\system32\spool\PRINTERS\PPtftgewc2_lpbx2sd4rftcnzob.TMP printfilterpipelinesvc.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
Processes:
PepperX.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\1pvSvxmZY.bmp" PepperX.exe Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\1pvSvxmZY.bmp" PepperX.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
E9D4.tmppid Process 4044 E9D4.tmp -
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 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
PepperX.exeE9D4.tmpcmd.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PepperX.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language E9D4.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
ONENOTE.EXEdescription ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString ONENOTE.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
ONENOTE.EXEdescription ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily ONENOTE.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU ONENOTE.EXE -
Modifies Control Panel 2 IoCs
Processes:
PepperX.exedescription ioc Process Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\Desktop PepperX.exe Set value (str) \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\Desktop\WallpaperStyle = "10" PepperX.exe -
Modifies registry class 5 IoCs
Processes:
PepperX.exedescription ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.1pvSvxmZY PepperX.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.1pvSvxmZY\ = "1pvSvxmZY" PepperX.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\1pvSvxmZY\DefaultIcon PepperX.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\1pvSvxmZY PepperX.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\1pvSvxmZY\DefaultIcon\ = "C:\\ProgramData\\1pvSvxmZY.ico" PepperX.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
PepperX.exepid Process 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe 1764 PepperX.exe -
Suspicious behavior: RenamesItself 26 IoCs
Processes:
E9D4.tmppid Process 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp 4044 E9D4.tmp -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
PepperX.exedescription pid Process Token: SeAssignPrimaryTokenPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeDebugPrivilege 1764 PepperX.exe Token: 36 1764 PepperX.exe Token: SeImpersonatePrivilege 1764 PepperX.exe Token: SeIncBasePriorityPrivilege 1764 PepperX.exe Token: SeIncreaseQuotaPrivilege 1764 PepperX.exe Token: 33 1764 PepperX.exe Token: SeManageVolumePrivilege 1764 PepperX.exe Token: SeProfSingleProcessPrivilege 1764 PepperX.exe Token: SeRestorePrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSystemProfilePrivilege 1764 PepperX.exe Token: SeTakeOwnershipPrivilege 1764 PepperX.exe Token: SeShutdownPrivilege 1764 PepperX.exe Token: SeDebugPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeBackupPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe Token: SeSecurityPrivilege 1764 PepperX.exe -
Suspicious use of SetWindowsHookEx 13 IoCs
Processes:
ONENOTE.EXEpid Process 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE 3260 ONENOTE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
PepperX.exeprintfilterpipelinesvc.exeE9D4.tmpdescription pid Process procid_target PID 1764 wrote to memory of 3188 1764 PepperX.exe 88 PID 1764 wrote to memory of 3188 1764 PepperX.exe 88 PID 1680 wrote to memory of 3260 1680 printfilterpipelinesvc.exe 93 PID 1680 wrote to memory of 3260 1680 printfilterpipelinesvc.exe 93 PID 1764 wrote to memory of 4044 1764 PepperX.exe 94 PID 1764 wrote to memory of 4044 1764 PepperX.exe 94 PID 1764 wrote to memory of 4044 1764 PepperX.exe 94 PID 1764 wrote to memory of 4044 1764 PepperX.exe 94 PID 4044 wrote to memory of 3508 4044 E9D4.tmp 95 PID 4044 wrote to memory of 3508 4044 E9D4.tmp 95 PID 4044 wrote to memory of 3508 4044 E9D4.tmp 95
Processes
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C:\Users\Admin\AppData\Local\Temp\PepperX.exe"C:\Users\Admin\AppData\Local\Temp\PepperX.exe"1⤵
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- System Location Discovery: System Language Discovery
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1764 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵
- Drops file in System32 directory
PID:3188
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C:\ProgramData\E9D4.tmp"C:\ProgramData\E9D4.tmp"2⤵
- Checks computer location settings
- Deletes itself
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:4044 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\E9D4.tmp >> NUL3⤵
- System Location Discovery: System Language Discovery
PID:3508
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵PID:3636
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C:\Windows\system32\printfilterpipelinesvc.exeC:\Windows\system32\printfilterpipelinesvc.exe -Embedding1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE/insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{DCE4F636-A327-46CA-BE1E-DF695A82F750}.xps" 1337706191104600002⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
PID:3260
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
129B
MD5391b4aefe02404cf91dc07c7bb04ae34
SHA1d3b7f9548c16618640312a4cb664c3e17101a2a1
SHA256b87ce215ee8ee980d488d15f928176bda4aba4c1dc1eea72bc8cfbbed7c1e817
SHA51277f4c6b613de31217d0055b7b3618449badbe11cf62a6bd362059495c5d4c244871d186c1ca2b2655f60489225861ad3a1b9c501b8ebe4333cd28c4bd63feb9d
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Filesize
348B
MD59810eed5ecd966874ebeb398ac6531ed
SHA117d2e2bc15df652734b79185cb323e652559fd6a
SHA25653183e5ed0cf42bed46b17c9dcc92ea49737bb57dce34f1e20675a913796566e
SHA512b26ca61461ed8b09f037e33d209cd0a22959b89e3e7895e057f544010fd5ae037e4fa76311763c121cd6e8b3050de22fa7d2163b4d9cf40585e14f5024e0cb79
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Filesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf
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Filesize
146KB
MD546031127153197a7d95c08c5aaa95a74
SHA1db5df3b011e671f193f97101e28b601f97c38cbc
SHA2562114289eada2541e510702e7237684ac3e9fd6ca35e80c0476196292a86340cf
SHA51200fd1de3bd6b34155c2b1a9a6cc24bf2ca49406a43c767e18d2d389fbd2d068d6f7c44295021121de2092e11e5a1302fae5c6836a4c13cc0fe8226120c475c7d
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Filesize
4KB
MD5a9c1a29d288c8ce0b4b4496ad6383e48
SHA1f471162fc11658f82536247edd6bca8f43389f5a
SHA25666967c15b14cb37c4643123c9eba33e8fe7bc9fdbe3dc0f17305157ea4b81401
SHA512d4f04e1bb0b96eb0c071d792099ce40bb013e8673564f678b7111555ea57100e06334c3cb11717b6f12fafa0e42bc5c933507125904a689c0a4c503e2558d4d2
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Filesize
129B
MD5e3c76af67f48c7916ea03088e35687be
SHA1ac2e8189c9a728b6c427ef653c9e2205b4602420
SHA2562bd38af27f9217d95e72137b2a2a25675c7a577c926195b808f144d51ed32d85
SHA512794c9e7b5cb6bd13abe8477fece1bc8e27a3a334be7d78090a86ba2db4797f735f74d4630fe7827c79e9aad75273517cccc4bda2a2b16f6b396b4cba0ddceac7