Analysis
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max time kernel
90s -
max time network
144s -
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 02:25
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 (648) 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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation E909.tmp -
Deletes itself 1 IoCs
pid Process 1276 E909.tmp -
Executes dropped EXE 1 IoCs
pid Process 1276 E909.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
description ioc Process File opened for modification C:\$Recycle.Bin\S-1-5-21-2045521122-590294423-3465680274-1000\desktop.ini PepperX.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2045521122-590294423-3465680274-1000\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
description ioc Process File created C:\Windows\system32\spool\PRINTERS\00002.SPL splwow64.exe File created C:\Windows\system32\spool\PRINTERS\PP3v0v00c_17jgp1q0wpetbjned.TMP printfilterpipelinesvc.exe File created C:\Windows\system32\spool\PRINTERS\PP9avw6pia7l22scoolbe0r3jnb.TMP printfilterpipelinesvc.exe File created C:\Windows\system32\spool\PRINTERS\PPshlpaj169x36fcd6s5pq9f70.TMP printfilterpipelinesvc.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\1pvSvxmZY.bmp" PepperX.exe Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\1pvSvxmZY.bmp" PepperX.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 1276 E909.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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PepperX.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language E909.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.
description 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
description 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
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\Desktop PepperX.exe Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\Desktop\WallpaperStyle = "10" PepperX.exe -
Modifies registry class 5 IoCs
description 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
pid Process 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe 1360 PepperX.exe -
Suspicious behavior: RenamesItself 26 IoCs
pid Process 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp 1276 E909.tmp -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeAssignPrimaryTokenPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeDebugPrivilege 1360 PepperX.exe Token: 36 1360 PepperX.exe Token: SeImpersonatePrivilege 1360 PepperX.exe Token: SeIncBasePriorityPrivilege 1360 PepperX.exe Token: SeIncreaseQuotaPrivilege 1360 PepperX.exe Token: 33 1360 PepperX.exe Token: SeManageVolumePrivilege 1360 PepperX.exe Token: SeProfSingleProcessPrivilege 1360 PepperX.exe Token: SeRestorePrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSystemProfilePrivilege 1360 PepperX.exe Token: SeTakeOwnershipPrivilege 1360 PepperX.exe Token: SeShutdownPrivilege 1360 PepperX.exe Token: SeDebugPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeBackupPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe Token: SeSecurityPrivilege 1360 PepperX.exe -
Suspicious use of SetWindowsHookEx 13 IoCs
pid Process 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE 4940 ONENOTE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1360 wrote to memory of 948 1360 PepperX.exe 93 PID 1360 wrote to memory of 948 1360 PepperX.exe 93 PID 1496 wrote to memory of 4940 1496 printfilterpipelinesvc.exe 100 PID 1496 wrote to memory of 4940 1496 printfilterpipelinesvc.exe 100 PID 1360 wrote to memory of 1276 1360 PepperX.exe 101 PID 1360 wrote to memory of 1276 1360 PepperX.exe 101 PID 1360 wrote to memory of 1276 1360 PepperX.exe 101 PID 1360 wrote to memory of 1276 1360 PepperX.exe 101 PID 1276 wrote to memory of 5180 1276 E909.tmp 103 PID 1276 wrote to memory of 5180 1276 E909.tmp 103 PID 1276 wrote to memory of 5180 1276 E909.tmp 103
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:1360 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵
- Drops file in System32 directory
PID:948
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C:\ProgramData\E909.tmp"C:\ProgramData\E909.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:1276 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\E909.tmp >> NUL3⤵
- System Location Discovery: System Language Discovery
PID:5180
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵PID:5544
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C:\Windows\system32\printfilterpipelinesvc.exeC:\Windows\system32\printfilterpipelinesvc.exe -Embedding1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1496 -
C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE/insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{CB94D366-5BFB-4468-BA81-8605CE196198}.xps" 1337706161238400002⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
PID:4940
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
129B
MD5ed8da919dbc2a81bed52a0b63769eb09
SHA116279d2a4ae1177c2253855508217e41b8e7a196
SHA256801768ba24285e39c94092b6534b931175c43e620813d13831e87771ab4b1a8a
SHA512e75207f352ef7fd7f7b8e0a04abadd98a715d9eb61af702e95d830b31bd0e2c156131d8072fd47314f42a8a7afe4d67987eb8bc22d9b340793f02eea44feb5bd
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Filesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf
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Filesize
348B
MD59810eed5ecd966874ebeb398ac6531ed
SHA117d2e2bc15df652734b79185cb323e652559fd6a
SHA25653183e5ed0cf42bed46b17c9dcc92ea49737bb57dce34f1e20675a913796566e
SHA512b26ca61461ed8b09f037e33d209cd0a22959b89e3e7895e057f544010fd5ae037e4fa76311763c121cd6e8b3050de22fa7d2163b4d9cf40585e14f5024e0cb79
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Filesize
146KB
MD5b37a47bd8896239fc9f642e2a58e0397
SHA18667b952a8909d089cf663770d5c76c0f893f6df
SHA256849c382dae26fa7423f1f09e4ac9feca6fbb773fd13b89c6db2d200c1c58bcf6
SHA512e8e2a341ffa530c3b04611f0c1ff06784759bca5bae53eefc9b1043cbc9a170f545f3509ba08821f90fad9b439da2526fc5cc146203fe883b0726577a570aa5a
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Filesize
4KB
MD577b4dcd562fd1696375f04338cb3f35a
SHA13ebab04233ec489efd03cc3719e424801003aa1e
SHA25690ce5b08e9aafba6469b9d101843725821eb3572ad4ec9d225e6484b7393b4b3
SHA512d8193381ea43048b4d1ced7fa97178ada45d4012741b042c252bfbc323761d67e97f5a20f7f6693fd2e7fb7d57db3bbb0ae447bfe75b80989eef44678e63ef12
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Filesize
4KB
MD5fddd95fcb15e4a33ef87bc1e5b4cc122
SHA1a983b57168eb84de7439f8368af30d2ffa23e047
SHA256c4d5ea79564f9848a01d3826e4a95ae45b1b5e985f1d7a719730d3ec8487643a
SHA5122b1c00d3b7598c18bde48dde4bcbe6bac463c952d001c71cfa98b739df167c30aef801546709e9ea888c1c62953239c66bc94950e00727493bd8a54fd0d2409e
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Filesize
129B
MD52c9247014a6def9eec0838f1e162b1d5
SHA11b61e706f2e8171348a6828f53c2ff450bc8053a
SHA25636dedc4e9d64cbe31bd2c33c3855129abe3f57ee76f4f5e93043788ecd1950cb
SHA512aaa45107de563a0a4474dce5ecc90c2b536b8d375c19b2fba21b780a94783959bd953dc2865a4893c9a09ab8a8f7801b69183ad50b4da246b631b3b894851b4a