Analysis
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max time kernel
122s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
14-03-2024 19:31
Static task
static1
Behavioral task
behavioral1
Sample
Version 2.8.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
Version 2.8.exe
Resource
win10v2004-20240226-en
General
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Target
Version 2.8.exe
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Size
227KB
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MD5
2ab8e3e63a7c847855ad80770dc2fd59
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SHA1
dae76d78053f9699f4cb7ccae51df9d4b6202ac7
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SHA256
7d306cc818d68effe14ccbebc60f2bb6de75a9e6fb2c840e5ffe575ebf98376b
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SHA512
6a968d8c7e96c121b77a8bdc14e709fa79301d6f660d933e487008c09f6bdbf356ac4bfa31bab62f8dd69cfbc2e8c43a17ff86133a8d0c1cd4db343cf8366b31
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SSDEEP
6144:yR9ixUkjCMkI3pwo9EkhtNK3OotdWV3vBLGC:oof+ewfkhsnWBvBj
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 1 IoCs
Processes:
resource yara_rule behavioral1/memory/2972-2-0x0000000000B50000-0x0000000000BA0000-memory.dmp family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
Processes:
bcdedit.exebcdedit.exepid process 2476 bcdedit.exe 2172 bcdedit.exe -
Processes:
wbadmin.exepid process 2708 wbadmin.exe -
Drops startup file 3 IoCs
Processes:
svchost.exedescription 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
Processes:
svchost.exepid process 2216 svchost.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 34 IoCs
Processes:
svchost.exedescription ioc process 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\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\Public\Desktop\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\AppData\Roaming\Microsoft\Windows\Start Menu\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\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2248906074-2862704502-246302768-1000\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\Windows\Start Menu\Programs\Maintenance\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\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 C:\Users\Admin\Desktop\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System 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\Videos\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\Pictures\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dcmj2bry6.jpg" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.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 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 1128 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 2148 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchost.exepid process 2216 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
Version 2.8.exesvchost.exepid process 2972 Version 2.8.exe 2972 Version 2.8.exe 2216 svchost.exe 2216 svchost.exe 2216 svchost.exe 2216 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
Version 2.8.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid process Token: SeDebugPrivilege 2972 Version 2.8.exe Token: SeDebugPrivilege 2216 svchost.exe Token: SeBackupPrivilege 1360 vssvc.exe Token: SeRestorePrivilege 1360 vssvc.exe Token: SeAuditPrivilege 1360 vssvc.exe Token: SeIncreaseQuotaPrivilege 2712 WMIC.exe Token: SeSecurityPrivilege 2712 WMIC.exe Token: SeTakeOwnershipPrivilege 2712 WMIC.exe Token: SeLoadDriverPrivilege 2712 WMIC.exe Token: SeSystemProfilePrivilege 2712 WMIC.exe Token: SeSystemtimePrivilege 2712 WMIC.exe Token: SeProfSingleProcessPrivilege 2712 WMIC.exe Token: SeIncBasePriorityPrivilege 2712 WMIC.exe Token: SeCreatePagefilePrivilege 2712 WMIC.exe Token: SeBackupPrivilege 2712 WMIC.exe Token: SeRestorePrivilege 2712 WMIC.exe Token: SeShutdownPrivilege 2712 WMIC.exe Token: SeDebugPrivilege 2712 WMIC.exe Token: SeSystemEnvironmentPrivilege 2712 WMIC.exe Token: SeRemoteShutdownPrivilege 2712 WMIC.exe Token: SeUndockPrivilege 2712 WMIC.exe Token: SeManageVolumePrivilege 2712 WMIC.exe Token: 33 2712 WMIC.exe Token: 34 2712 WMIC.exe Token: 35 2712 WMIC.exe Token: SeIncreaseQuotaPrivilege 2712 WMIC.exe Token: SeSecurityPrivilege 2712 WMIC.exe Token: SeTakeOwnershipPrivilege 2712 WMIC.exe Token: SeLoadDriverPrivilege 2712 WMIC.exe Token: SeSystemProfilePrivilege 2712 WMIC.exe Token: SeSystemtimePrivilege 2712 WMIC.exe Token: SeProfSingleProcessPrivilege 2712 WMIC.exe Token: SeIncBasePriorityPrivilege 2712 WMIC.exe Token: SeCreatePagefilePrivilege 2712 WMIC.exe Token: SeBackupPrivilege 2712 WMIC.exe Token: SeRestorePrivilege 2712 WMIC.exe Token: SeShutdownPrivilege 2712 WMIC.exe Token: SeDebugPrivilege 2712 WMIC.exe Token: SeSystemEnvironmentPrivilege 2712 WMIC.exe Token: SeRemoteShutdownPrivilege 2712 WMIC.exe Token: SeUndockPrivilege 2712 WMIC.exe Token: SeManageVolumePrivilege 2712 WMIC.exe Token: 33 2712 WMIC.exe Token: 34 2712 WMIC.exe Token: 35 2712 WMIC.exe Token: SeBackupPrivilege 2336 wbengine.exe Token: SeRestorePrivilege 2336 wbengine.exe Token: SeSecurityPrivilege 2336 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
Version 2.8.exesvchost.execmd.execmd.execmd.exedescription pid process target process PID 2972 wrote to memory of 2216 2972 Version 2.8.exe svchost.exe PID 2972 wrote to memory of 2216 2972 Version 2.8.exe svchost.exe PID 2972 wrote to memory of 2216 2972 Version 2.8.exe svchost.exe PID 2216 wrote to memory of 2144 2216 svchost.exe cmd.exe PID 2216 wrote to memory of 2144 2216 svchost.exe cmd.exe PID 2216 wrote to memory of 2144 2216 svchost.exe cmd.exe PID 2144 wrote to memory of 1128 2144 cmd.exe vssadmin.exe PID 2144 wrote to memory of 1128 2144 cmd.exe vssadmin.exe PID 2144 wrote to memory of 1128 2144 cmd.exe vssadmin.exe PID 2144 wrote to memory of 2712 2144 cmd.exe WMIC.exe PID 2144 wrote to memory of 2712 2144 cmd.exe WMIC.exe PID 2144 wrote to memory of 2712 2144 cmd.exe WMIC.exe PID 2216 wrote to memory of 2416 2216 svchost.exe cmd.exe PID 2216 wrote to memory of 2416 2216 svchost.exe cmd.exe PID 2216 wrote to memory of 2416 2216 svchost.exe cmd.exe PID 2416 wrote to memory of 2476 2416 cmd.exe bcdedit.exe PID 2416 wrote to memory of 2476 2416 cmd.exe bcdedit.exe PID 2416 wrote to memory of 2476 2416 cmd.exe bcdedit.exe PID 2416 wrote to memory of 2172 2416 cmd.exe bcdedit.exe PID 2416 wrote to memory of 2172 2416 cmd.exe bcdedit.exe PID 2416 wrote to memory of 2172 2416 cmd.exe bcdedit.exe PID 2216 wrote to memory of 2060 2216 svchost.exe cmd.exe PID 2216 wrote to memory of 2060 2216 svchost.exe cmd.exe PID 2216 wrote to memory of 2060 2216 svchost.exe cmd.exe PID 2060 wrote to memory of 2708 2060 cmd.exe wbadmin.exe PID 2060 wrote to memory of 2708 2060 cmd.exe wbadmin.exe PID 2060 wrote to memory of 2708 2060 cmd.exe wbadmin.exe PID 2216 wrote to memory of 2148 2216 svchost.exe NOTEPAD.EXE PID 2216 wrote to memory of 2148 2216 svchost.exe NOTEPAD.EXE PID 2216 wrote to memory of 2148 2216 svchost.exe NOTEPAD.EXE -
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\Version 2.8.exe"C:\Users\Admin\AppData\Local\Temp\Version 2.8.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2972 -
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:2216 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2144 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1128 -
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2712 -
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:2416 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2476 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2172 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2060 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2708 -
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:2148
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1360
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2336
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:768
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1424
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
227KB
MD52ab8e3e63a7c847855ad80770dc2fd59
SHA1dae76d78053f9699f4cb7ccae51df9d4b6202ac7
SHA2567d306cc818d68effe14ccbebc60f2bb6de75a9e6fb2c840e5ffe575ebf98376b
SHA5126a968d8c7e96c121b77a8bdc14e709fa79301d6f660d933e487008c09f6bdbf356ac4bfa31bab62f8dd69cfbc2e8c43a17ff86133a8d0c1cd4db343cf8366b31
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Filesize
1KB
MD5ea03cbb2fdf2dc96252b579612602225
SHA1ac9ceff3c368f7409b9a7201f62fa92eded4da51
SHA256e4f0c335d1ffc3ed4a32ae4aee294c9652f67a765fbaaad1f90e0540d25ed565
SHA5121388a3f740f84541f8a8c0298bfe8b71f03d86a71174f97a68edcb4bdca0f467d6823b94314fa54547451c3ec4f6bc2228d74bf7537acf7c2dfb9f5a2d398051