Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
13-11-2024 13:26
Behavioral task
behavioral1
Sample
CoinMama.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
CoinMama.exe
Resource
win10v2004-20241007-en
General
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Target
CoinMama.exe
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Size
29KB
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MD5
c5a36a4a7e558ad587a7087d72a72c7c
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SHA1
3edc0fff5092983a4ae664c006dd5a94843eb715
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SHA256
1461362ebd3b8710610c59cd2aa00f435330bd9d8f75ba4105617b0205cd932b
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SHA512
c14b21e5e251449c6ad4ea29fc69ec5fc6586e16672d40cf019f6d9d63955d37b972c41b7e5a460a61059bf024647c4b9af7104237a87a96553a0276d6ef6986
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SSDEEP
384:StWZPzzxAm1vd5VM6YE2r7OUmgIYfdQPFolUOy5o91qqclYhhx82v4:37zxAmhWF/rEgIYw/ho98Ot82Q
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
Processes:
resource yara_rule behavioral2/memory/4600-1-0x00000000005D0000-0x00000000005DE000-memory.dmp family_chaos C:\Users\Admin\AppData\Roaming\svchost.exe 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
Processes:
bcdedit.exebcdedit.exepid process 3632 bcdedit.exe 836 bcdedit.exe -
Processes:
wbadmin.exepid process 4256 wbadmin.exe -
Disables Task Manager via registry modification
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
svchost.exeCoinMama.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation svchost.exe Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation CoinMama.exe -
Drops startup file 2 IoCs
Processes:
svchost.exedescription ioc process 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\ReadMe.txt svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 3080 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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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe" svchost.exe -
Drops desktop.ini file(s) 64 IoCs
Processes:
svchost.exedescription ioc process File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\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\Default\AppData\Local\Microsoft\Windows\WinX\Group3\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn2\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group2\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\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\SendTo\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-493223053-2004649691-1575712786-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\3D Objects\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group3\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\StartUp\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\Default\AppData\Local\Microsoft\Windows\WinX\Group2\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\Accessibility\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn1\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Application Shortcuts\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\System Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Local\Microsoft\Windows\WinX\Group1\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\WinX\Group1\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
vds.exedescription ioc process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000 vds.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 3436 vssadmin.exe -
Modifies registry class 1 IoCs
Processes:
svchost.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 4108 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
Processes:
CoinMama.exesvchost.exepid process 4600 CoinMama.exe 3080 svchost.exe -
Suspicious behavior: EnumeratesProcesses 46 IoCs
Processes:
CoinMama.exesvchost.exepid process 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 4600 CoinMama.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe 3080 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
Processes:
CoinMama.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid process Token: SeDebugPrivilege 4600 CoinMama.exe Token: SeDebugPrivilege 3080 svchost.exe Token: SeBackupPrivilege 3532 vssvc.exe Token: SeRestorePrivilege 3532 vssvc.exe Token: SeAuditPrivilege 3532 vssvc.exe Token: SeIncreaseQuotaPrivilege 216 WMIC.exe Token: SeSecurityPrivilege 216 WMIC.exe Token: SeTakeOwnershipPrivilege 216 WMIC.exe Token: SeLoadDriverPrivilege 216 WMIC.exe Token: SeSystemProfilePrivilege 216 WMIC.exe Token: SeSystemtimePrivilege 216 WMIC.exe Token: SeProfSingleProcessPrivilege 216 WMIC.exe Token: SeIncBasePriorityPrivilege 216 WMIC.exe Token: SeCreatePagefilePrivilege 216 WMIC.exe Token: SeBackupPrivilege 216 WMIC.exe Token: SeRestorePrivilege 216 WMIC.exe Token: SeShutdownPrivilege 216 WMIC.exe Token: SeDebugPrivilege 216 WMIC.exe Token: SeSystemEnvironmentPrivilege 216 WMIC.exe Token: SeRemoteShutdownPrivilege 216 WMIC.exe Token: SeUndockPrivilege 216 WMIC.exe Token: SeManageVolumePrivilege 216 WMIC.exe Token: 33 216 WMIC.exe Token: 34 216 WMIC.exe Token: 35 216 WMIC.exe Token: 36 216 WMIC.exe Token: SeIncreaseQuotaPrivilege 216 WMIC.exe Token: SeSecurityPrivilege 216 WMIC.exe Token: SeTakeOwnershipPrivilege 216 WMIC.exe Token: SeLoadDriverPrivilege 216 WMIC.exe Token: SeSystemProfilePrivilege 216 WMIC.exe Token: SeSystemtimePrivilege 216 WMIC.exe Token: SeProfSingleProcessPrivilege 216 WMIC.exe Token: SeIncBasePriorityPrivilege 216 WMIC.exe Token: SeCreatePagefilePrivilege 216 WMIC.exe Token: SeBackupPrivilege 216 WMIC.exe Token: SeRestorePrivilege 216 WMIC.exe Token: SeShutdownPrivilege 216 WMIC.exe Token: SeDebugPrivilege 216 WMIC.exe Token: SeSystemEnvironmentPrivilege 216 WMIC.exe Token: SeRemoteShutdownPrivilege 216 WMIC.exe Token: SeUndockPrivilege 216 WMIC.exe Token: SeManageVolumePrivilege 216 WMIC.exe Token: 33 216 WMIC.exe Token: 34 216 WMIC.exe Token: 35 216 WMIC.exe Token: 36 216 WMIC.exe Token: SeBackupPrivilege 3088 wbengine.exe Token: SeRestorePrivilege 3088 wbengine.exe Token: SeSecurityPrivilege 3088 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
CoinMama.exesvchost.execmd.execmd.execmd.exedescription pid process target process PID 4600 wrote to memory of 3080 4600 CoinMama.exe svchost.exe PID 4600 wrote to memory of 3080 4600 CoinMama.exe svchost.exe PID 3080 wrote to memory of 2620 3080 svchost.exe cmd.exe PID 3080 wrote to memory of 2620 3080 svchost.exe cmd.exe PID 2620 wrote to memory of 3436 2620 cmd.exe vssadmin.exe PID 2620 wrote to memory of 3436 2620 cmd.exe vssadmin.exe PID 2620 wrote to memory of 216 2620 cmd.exe WMIC.exe PID 2620 wrote to memory of 216 2620 cmd.exe WMIC.exe PID 3080 wrote to memory of 3900 3080 svchost.exe cmd.exe PID 3080 wrote to memory of 3900 3080 svchost.exe cmd.exe PID 3900 wrote to memory of 3632 3900 cmd.exe bcdedit.exe PID 3900 wrote to memory of 3632 3900 cmd.exe bcdedit.exe PID 3900 wrote to memory of 836 3900 cmd.exe bcdedit.exe PID 3900 wrote to memory of 836 3900 cmd.exe bcdedit.exe PID 3080 wrote to memory of 2364 3080 svchost.exe cmd.exe PID 3080 wrote to memory of 2364 3080 svchost.exe cmd.exe PID 2364 wrote to memory of 4256 2364 cmd.exe wbadmin.exe PID 2364 wrote to memory of 4256 2364 cmd.exe wbadmin.exe PID 3080 wrote to memory of 4108 3080 svchost.exe NOTEPAD.EXE PID 3080 wrote to memory of 4108 3080 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\CoinMama.exe"C:\Users\Admin\AppData\Local\Temp\CoinMama.exe"1⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4600 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops desktop.ini file(s)
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3080 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2620 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:3436
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:216
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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:3900 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3632
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:836
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2364 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4256
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\ReadMe.txt3⤵
- Opens file in notepad (likely ransom note)
PID:4108
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3532
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3088
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2796
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:1776
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD522577d64a5f3bc0195a15faee68d6656
SHA1f33c59571258195a04cb5bd332cefc2efcaee23a
SHA256d2bc1039a06522c7a124a3d612cf7e848bbf6848a5d7551b019937c69e79df4e
SHA51260627178f6252678e77e4f6dbf780d88ad2f77e23a7d96c8398922b5d4fd65aeff85f60f179e690dc76acfc7e073c9c40fe4c5acdee7be8844a06bc006df57a7
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Filesize
1KB
MD5baf55b95da4a601229647f25dad12878
SHA1abc16954ebfd213733c4493fc1910164d825cac8
SHA256ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
SHA51224f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545
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Filesize
29KB
MD5c5a36a4a7e558ad587a7087d72a72c7c
SHA13edc0fff5092983a4ae664c006dd5a94843eb715
SHA2561461362ebd3b8710610c59cd2aa00f435330bd9d8f75ba4105617b0205cd932b
SHA512c14b21e5e251449c6ad4ea29fc69ec5fc6586e16672d40cf019f6d9d63955d37b972c41b7e5a460a61059bf024647c4b9af7104237a87a96553a0276d6ef6986
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0