Analysis
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max time kernel
117s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 (360) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Deletes itself 1 IoCs
pid Process 1728 E476.tmp -
Executes dropped EXE 1 IoCs
pid Process 1728 E476.tmp -
Loads dropped DLL 1 IoCs
pid Process 2228 PepperX.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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Drops desktop.ini file(s) 2 IoCs
description ioc Process File opened for modification F:\$RECYCLE.BIN\S-1-5-21-312935884-697965778-3955649944-1000\desktop.ini PepperX.exe File opened for modification C:\$Recycle.Bin\S-1-5-21-312935884-697965778-3955649944-1000\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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Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\1pvSvxmZY.bmp" PepperX.exe Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\1pvSvxmZY.bmp" PepperX.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 1728 E476.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 E476.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Modifies Control Panel 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\WallpaperStyle = "10" PepperX.exe Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop PepperX.exe -
Modifies registry class 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\1pvSvxmZY\DefaultIcon\ = "C:\\ProgramData\\1pvSvxmZY.ico" PepperX.exe 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 -
Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe 2228 PepperX.exe -
Suspicious behavior: RenamesItself 26 IoCs
pid Process 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp 1728 E476.tmp -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeAssignPrimaryTokenPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeDebugPrivilege 2228 PepperX.exe Token: 36 2228 PepperX.exe Token: SeImpersonatePrivilege 2228 PepperX.exe Token: SeIncBasePriorityPrivilege 2228 PepperX.exe Token: SeIncreaseQuotaPrivilege 2228 PepperX.exe Token: 33 2228 PepperX.exe Token: SeManageVolumePrivilege 2228 PepperX.exe Token: SeProfSingleProcessPrivilege 2228 PepperX.exe Token: SeRestorePrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSystemProfilePrivilege 2228 PepperX.exe Token: SeTakeOwnershipPrivilege 2228 PepperX.exe Token: SeShutdownPrivilege 2228 PepperX.exe Token: SeDebugPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeBackupPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe Token: SeSecurityPrivilege 2228 PepperX.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2228 wrote to memory of 1728 2228 PepperX.exe 33 PID 2228 wrote to memory of 1728 2228 PepperX.exe 33 PID 2228 wrote to memory of 1728 2228 PepperX.exe 33 PID 2228 wrote to memory of 1728 2228 PepperX.exe 33 PID 2228 wrote to memory of 1728 2228 PepperX.exe 33 PID 1728 wrote to memory of 3068 1728 E476.tmp 34 PID 1728 wrote to memory of 3068 1728 E476.tmp 34 PID 1728 wrote to memory of 3068 1728 E476.tmp 34 PID 1728 wrote to memory of 3068 1728 E476.tmp 34
Processes
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C:\Users\Admin\AppData\Local\Temp\PepperX.exe"C:\Users\Admin\AppData\Local\Temp\PepperX.exe"1⤵
- Loads dropped DLL
- 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:2228 -
C:\ProgramData\E476.tmp"C:\ProgramData\E476.tmp"2⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1728 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\E476.tmp >> NUL3⤵
- System Location Discovery: System Language Discovery
PID:3068
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x14c1⤵PID:2392
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
129B
MD500238c7fea49123c34d129226d7f12c9
SHA12e6095f0f294a0f80076aa23c8dd549bdf00158d
SHA256404f43a42ec638aff9a92c40aadf57233d080840d47025da8ae434af20603fd2
SHA51211ccf7eaaa5e67d8d66c1db64e78c25339bd336bc61a26d61ffe037ac2270d0f3491512e9d26c9ef8695c6334d3293100070c542e9c0cad7db61fee51a223b56
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Filesize
348B
MD59810eed5ecd966874ebeb398ac6531ed
SHA117d2e2bc15df652734b79185cb323e652559fd6a
SHA25653183e5ed0cf42bed46b17c9dcc92ea49737bb57dce34f1e20675a913796566e
SHA512b26ca61461ed8b09f037e33d209cd0a22959b89e3e7895e057f544010fd5ae037e4fa76311763c121cd6e8b3050de22fa7d2163b4d9cf40585e14f5024e0cb79
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Filesize
146KB
MD532fa1c9cb47c443bd5f8195fb7d8f142
SHA1d46668cc3e16e7d925aa7e8ddc49b5ed12dd122c
SHA256b38aa10e46d4515a0a424c7c86dc80791d6cad84ec18ffe5cfaa486a46b29daf
SHA512f9ff122fe8684bbb667d0726d4a17318b4e56460aacd188f25275b261ebbeeaa8a1e1c246bcc7007f4fa3bd0c8baaf28cf8b6abda945f8364c65652206157bcf
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Filesize
129B
MD5e3e4fcfcacc762e434eff96015e20a73
SHA134c0bab527f0ce5959bae41664e8f22a25440e46
SHA256525921304e9f85a5190c1fa75998152a453bdca2171409f9c63f94b5793c3d2f
SHA512a3a474d8c4c883999c9b7e914c30d6f28ae78a8530afebf316a22bc6bfa7dd27cf63874f4a68d15bd24ba7ab94831f5ca8866213e7c2d50252a2ad240188bef4
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Filesize
14KB
MD5294e9f64cb1642dd89229fff0592856b
SHA197b148c27f3da29ba7b18d6aee8a0db9102f47c9
SHA256917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
SHA512b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf