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Analysis
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max time kernel
117s -
max time network
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platform
windows7_x64 -
resource
win7-20241023-en -
resource tags
arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system -
submitted
25/11/2024, 15:40
Behavioral task
behavioral1
Sample
PepperX (1).exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
PepperX (1).exe
Resource
win10v2004-20241007-en
General
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Target
PepperX (1).exe
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Size
81KB
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MD5
b950502f66e5c9b058f340ab24b3b5ab
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SHA1
fad3abdf88ef351b25ef339a6d1a082d8516b9e9
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SHA256
d45f6608d6afc48189e0ef63e489f9034cd3e864a95d634640df53ad302b42b3
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SHA512
132235bf2ad67b8b22428e716a27d35b024c38ca09e770237688b4d4e88eb4f44a98b267c068f422aa75a6050bfff3db6073bc71619b5bb85fb76ddf9833a5f9
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SSDEEP
1536:w3kIZ4nmr9iW2wU3gUvpdO0J//E2dLEgtMRloDpU:w3kI4nmr9iY7MhdHMRl6pU
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/2628-1-0x0000000000D80000-0x0000000000D9A000-memory.dmp family_chaos behavioral1/files/0x0007000000012118-5.dat family_chaos behavioral1/memory/2380-7-0x0000000000170000-0x000000000018A000-memory.dmp family_chaos -
Chaos family
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2436 bcdedit.exe 812 bcdedit.exe -
pid Process 876 wbadmin.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2380 svchost.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) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1163522206-1469769407-485553996-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wdn1bhgpy.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2676 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 836 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2380 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 2628 PepperX (1).exe 2628 PepperX (1).exe 2628 PepperX (1).exe 2380 svchost.exe 2380 svchost.exe 2380 svchost.exe 2380 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2628 PepperX (1).exe Token: SeDebugPrivilege 2380 svchost.exe Token: SeBackupPrivilege 2748 vssvc.exe Token: SeRestorePrivilege 2748 vssvc.exe Token: SeAuditPrivilege 2748 vssvc.exe Token: SeIncreaseQuotaPrivilege 1424 WMIC.exe Token: SeSecurityPrivilege 1424 WMIC.exe Token: SeTakeOwnershipPrivilege 1424 WMIC.exe Token: SeLoadDriverPrivilege 1424 WMIC.exe Token: SeSystemProfilePrivilege 1424 WMIC.exe Token: SeSystemtimePrivilege 1424 WMIC.exe Token: SeProfSingleProcessPrivilege 1424 WMIC.exe Token: SeIncBasePriorityPrivilege 1424 WMIC.exe Token: SeCreatePagefilePrivilege 1424 WMIC.exe Token: SeBackupPrivilege 1424 WMIC.exe Token: SeRestorePrivilege 1424 WMIC.exe Token: SeShutdownPrivilege 1424 WMIC.exe Token: SeDebugPrivilege 1424 WMIC.exe Token: SeSystemEnvironmentPrivilege 1424 WMIC.exe Token: SeRemoteShutdownPrivilege 1424 WMIC.exe Token: SeUndockPrivilege 1424 WMIC.exe Token: SeManageVolumePrivilege 1424 WMIC.exe Token: 33 1424 WMIC.exe Token: 34 1424 WMIC.exe Token: 35 1424 WMIC.exe Token: SeIncreaseQuotaPrivilege 1424 WMIC.exe Token: SeSecurityPrivilege 1424 WMIC.exe Token: SeTakeOwnershipPrivilege 1424 WMIC.exe Token: SeLoadDriverPrivilege 1424 WMIC.exe Token: SeSystemProfilePrivilege 1424 WMIC.exe Token: SeSystemtimePrivilege 1424 WMIC.exe Token: SeProfSingleProcessPrivilege 1424 WMIC.exe Token: SeIncBasePriorityPrivilege 1424 WMIC.exe Token: SeCreatePagefilePrivilege 1424 WMIC.exe Token: SeBackupPrivilege 1424 WMIC.exe Token: SeRestorePrivilege 1424 WMIC.exe Token: SeShutdownPrivilege 1424 WMIC.exe Token: SeDebugPrivilege 1424 WMIC.exe Token: SeSystemEnvironmentPrivilege 1424 WMIC.exe Token: SeRemoteShutdownPrivilege 1424 WMIC.exe Token: SeUndockPrivilege 1424 WMIC.exe Token: SeManageVolumePrivilege 1424 WMIC.exe Token: 33 1424 WMIC.exe Token: 34 1424 WMIC.exe Token: 35 1424 WMIC.exe Token: SeBackupPrivilege 2544 wbengine.exe Token: SeRestorePrivilege 2544 wbengine.exe Token: SeSecurityPrivilege 2544 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2628 wrote to memory of 2380 2628 PepperX (1).exe 30 PID 2628 wrote to memory of 2380 2628 PepperX (1).exe 30 PID 2628 wrote to memory of 2380 2628 PepperX (1).exe 30 PID 2380 wrote to memory of 2844 2380 svchost.exe 31 PID 2380 wrote to memory of 2844 2380 svchost.exe 31 PID 2380 wrote to memory of 2844 2380 svchost.exe 31 PID 2844 wrote to memory of 2676 2844 cmd.exe 33 PID 2844 wrote to memory of 2676 2844 cmd.exe 33 PID 2844 wrote to memory of 2676 2844 cmd.exe 33 PID 2844 wrote to memory of 1424 2844 cmd.exe 37 PID 2844 wrote to memory of 1424 2844 cmd.exe 37 PID 2844 wrote to memory of 1424 2844 cmd.exe 37 PID 2380 wrote to memory of 1504 2380 svchost.exe 39 PID 2380 wrote to memory of 1504 2380 svchost.exe 39 PID 2380 wrote to memory of 1504 2380 svchost.exe 39 PID 1504 wrote to memory of 2436 1504 cmd.exe 41 PID 1504 wrote to memory of 2436 1504 cmd.exe 41 PID 1504 wrote to memory of 2436 1504 cmd.exe 41 PID 1504 wrote to memory of 812 1504 cmd.exe 42 PID 1504 wrote to memory of 812 1504 cmd.exe 42 PID 1504 wrote to memory of 812 1504 cmd.exe 42 PID 2380 wrote to memory of 2412 2380 svchost.exe 43 PID 2380 wrote to memory of 2412 2380 svchost.exe 43 PID 2380 wrote to memory of 2412 2380 svchost.exe 43 PID 2412 wrote to memory of 876 2412 cmd.exe 45 PID 2412 wrote to memory of 876 2412 cmd.exe 45 PID 2412 wrote to memory of 876 2412 cmd.exe 45 PID 2380 wrote to memory of 836 2380 svchost.exe 49 PID 2380 wrote to memory of 836 2380 svchost.exe 49 PID 2380 wrote to memory of 836 2380 svchost.exe 49 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\PepperX (1).exe"C:\Users\Admin\AppData\Local\Temp\PepperX (1).exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2628 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2380 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2844 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2676
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1424
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Suspicious use of WriteProcessMemory
PID:1504 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2436
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:812
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2412 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:876
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt3⤵
- Opens file in notepad (likely ransom note)
PID:836
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2748
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2544
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2188
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:3052
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
81KB
MD5b950502f66e5c9b058f340ab24b3b5ab
SHA1fad3abdf88ef351b25ef339a6d1a082d8516b9e9
SHA256d45f6608d6afc48189e0ef63e489f9034cd3e864a95d634640df53ad302b42b3
SHA512132235bf2ad67b8b22428e716a27d35b024c38ca09e770237688b4d4e88eb4f44a98b267c068f422aa75a6050bfff3db6073bc71619b5bb85fb76ddf9833a5f9
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Filesize
778B
MD5e476ae4628a4272384255b6003b1b5b3
SHA17bd05141ec08774a5c0ae500e0a5d9806be681f4
SHA256c5f2d8ef689c1af8b9d9f9908beb8e9e16abe5338bc569f4998d6f5e45b95d0f
SHA512a9ac31705fb99985f1b241c5d06447c6870dd5f203bfc43056c7d2c92e6f0af9711395e42707253ec98730f1e765966359ec061f1deee6529df69fe4354a5d8e