Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
15-03-2024 00:38
Static task
static1
Behavioral task
behavioral1
Sample
Version 2.8.exe
Resource
win7-20231129-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/1868-1-0x00000000002C0000-0x0000000000310000-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 2152 bcdedit.exe 2260 bcdedit.exe -
Processes:
wbadmin.exepid process 1684 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 2760 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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\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\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\Accessories\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\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\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\Public\Videos\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\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\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\Libraries\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\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3627615824-4061627003-3019543961-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\9co4cnjbu.jpg" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\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 2520 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 1896 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchost.exepid process 2760 svchost.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
Version 2.8.exesvchost.exepid process 1868 Version 2.8.exe 1868 Version 2.8.exe 2760 svchost.exe 2760 svchost.exe 2760 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
Version 2.8.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid process Token: SeDebugPrivilege 1868 Version 2.8.exe Token: SeDebugPrivilege 2760 svchost.exe Token: SeBackupPrivilege 2684 vssvc.exe Token: SeRestorePrivilege 2684 vssvc.exe Token: SeAuditPrivilege 2684 vssvc.exe Token: SeIncreaseQuotaPrivilege 1932 WMIC.exe Token: SeSecurityPrivilege 1932 WMIC.exe Token: SeTakeOwnershipPrivilege 1932 WMIC.exe Token: SeLoadDriverPrivilege 1932 WMIC.exe Token: SeSystemProfilePrivilege 1932 WMIC.exe Token: SeSystemtimePrivilege 1932 WMIC.exe Token: SeProfSingleProcessPrivilege 1932 WMIC.exe Token: SeIncBasePriorityPrivilege 1932 WMIC.exe Token: SeCreatePagefilePrivilege 1932 WMIC.exe Token: SeBackupPrivilege 1932 WMIC.exe Token: SeRestorePrivilege 1932 WMIC.exe Token: SeShutdownPrivilege 1932 WMIC.exe Token: SeDebugPrivilege 1932 WMIC.exe Token: SeSystemEnvironmentPrivilege 1932 WMIC.exe Token: SeRemoteShutdownPrivilege 1932 WMIC.exe Token: SeUndockPrivilege 1932 WMIC.exe Token: SeManageVolumePrivilege 1932 WMIC.exe Token: 33 1932 WMIC.exe Token: 34 1932 WMIC.exe Token: 35 1932 WMIC.exe Token: SeIncreaseQuotaPrivilege 1932 WMIC.exe Token: SeSecurityPrivilege 1932 WMIC.exe Token: SeTakeOwnershipPrivilege 1932 WMIC.exe Token: SeLoadDriverPrivilege 1932 WMIC.exe Token: SeSystemProfilePrivilege 1932 WMIC.exe Token: SeSystemtimePrivilege 1932 WMIC.exe Token: SeProfSingleProcessPrivilege 1932 WMIC.exe Token: SeIncBasePriorityPrivilege 1932 WMIC.exe Token: SeCreatePagefilePrivilege 1932 WMIC.exe Token: SeBackupPrivilege 1932 WMIC.exe Token: SeRestorePrivilege 1932 WMIC.exe Token: SeShutdownPrivilege 1932 WMIC.exe Token: SeDebugPrivilege 1932 WMIC.exe Token: SeSystemEnvironmentPrivilege 1932 WMIC.exe Token: SeRemoteShutdownPrivilege 1932 WMIC.exe Token: SeUndockPrivilege 1932 WMIC.exe Token: SeManageVolumePrivilege 1932 WMIC.exe Token: 33 1932 WMIC.exe Token: 34 1932 WMIC.exe Token: 35 1932 WMIC.exe Token: SeBackupPrivilege 2288 wbengine.exe Token: SeRestorePrivilege 2288 wbengine.exe Token: SeSecurityPrivilege 2288 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
Version 2.8.exesvchost.execmd.execmd.execmd.exedescription pid process target process PID 1868 wrote to memory of 2760 1868 Version 2.8.exe svchost.exe PID 1868 wrote to memory of 2760 1868 Version 2.8.exe svchost.exe PID 1868 wrote to memory of 2760 1868 Version 2.8.exe svchost.exe PID 2760 wrote to memory of 2452 2760 svchost.exe cmd.exe PID 2760 wrote to memory of 2452 2760 svchost.exe cmd.exe PID 2760 wrote to memory of 2452 2760 svchost.exe cmd.exe PID 2452 wrote to memory of 2520 2452 cmd.exe vssadmin.exe PID 2452 wrote to memory of 2520 2452 cmd.exe vssadmin.exe PID 2452 wrote to memory of 2520 2452 cmd.exe vssadmin.exe PID 2452 wrote to memory of 1932 2452 cmd.exe WMIC.exe PID 2452 wrote to memory of 1932 2452 cmd.exe WMIC.exe PID 2452 wrote to memory of 1932 2452 cmd.exe WMIC.exe PID 2760 wrote to memory of 2268 2760 svchost.exe cmd.exe PID 2760 wrote to memory of 2268 2760 svchost.exe cmd.exe PID 2760 wrote to memory of 2268 2760 svchost.exe cmd.exe PID 2268 wrote to memory of 2260 2268 cmd.exe bcdedit.exe PID 2268 wrote to memory of 2260 2268 cmd.exe bcdedit.exe PID 2268 wrote to memory of 2260 2268 cmd.exe bcdedit.exe PID 2268 wrote to memory of 2152 2268 cmd.exe bcdedit.exe PID 2268 wrote to memory of 2152 2268 cmd.exe bcdedit.exe PID 2268 wrote to memory of 2152 2268 cmd.exe bcdedit.exe PID 2760 wrote to memory of 2924 2760 svchost.exe cmd.exe PID 2760 wrote to memory of 2924 2760 svchost.exe cmd.exe PID 2760 wrote to memory of 2924 2760 svchost.exe cmd.exe PID 2924 wrote to memory of 1684 2924 cmd.exe wbadmin.exe PID 2924 wrote to memory of 1684 2924 cmd.exe wbadmin.exe PID 2924 wrote to memory of 1684 2924 cmd.exe wbadmin.exe PID 2760 wrote to memory of 1896 2760 svchost.exe NOTEPAD.EXE PID 2760 wrote to memory of 1896 2760 svchost.exe NOTEPAD.EXE PID 2760 wrote to memory of 1896 2760 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:1868 -
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:2760 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2452 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2520 -
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1932 -
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:2268 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2260 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2152 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2924 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1684 -
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:1896
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2684
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2288
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:540
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:692
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