Analysis
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max time kernel
122s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1732-1-0x0000000000AE0000-0x0000000000AEE000-memory.dmp family_chaos C:\Users\Admin\AppData\Roaming\svchost.exe family_chaos behavioral1/memory/2500-8-0x0000000000DC0000-0x0000000000DCE000-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
Processes:
bcdedit.exebcdedit.exepid process 1648 bcdedit.exe 1100 bcdedit.exe -
Processes:
wbadmin.exepid process 1616 wbadmin.exe -
Disables Task Manager via registry modification
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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 2500 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-1-5-21-3533259084-2542256011-65585152-1000\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\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\B8BOMT1Q\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\U9KKHJMH\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\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\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\FP29B0EC\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Feeds Cache\VSUVY3HP\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\TN6BGAW3\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\Saved Games\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3533259084-2542256011-65585152-1000\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\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\Searches\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\L1J27TKW\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\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\INNMDE1C\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample 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\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\Documents\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\All Users\Microsoft\Windows\Ringtones\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\WK3MU41S\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\Public\Libraries\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\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\desktop.ini 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.
Processes:
vssadmin.exepid process 2892 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 2908 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchost.exepid process 2500 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
CoinMama.exesvchost.exepid process 1732 CoinMama.exe 1732 CoinMama.exe 1732 CoinMama.exe 2500 svchost.exe 2500 svchost.exe 2500 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
CoinMama.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid process Token: SeDebugPrivilege 1732 CoinMama.exe Token: SeDebugPrivilege 2500 svchost.exe Token: SeBackupPrivilege 3012 vssvc.exe Token: SeRestorePrivilege 3012 vssvc.exe Token: SeAuditPrivilege 3012 vssvc.exe Token: SeIncreaseQuotaPrivilege 2224 WMIC.exe Token: SeSecurityPrivilege 2224 WMIC.exe Token: SeTakeOwnershipPrivilege 2224 WMIC.exe Token: SeLoadDriverPrivilege 2224 WMIC.exe Token: SeSystemProfilePrivilege 2224 WMIC.exe Token: SeSystemtimePrivilege 2224 WMIC.exe Token: SeProfSingleProcessPrivilege 2224 WMIC.exe Token: SeIncBasePriorityPrivilege 2224 WMIC.exe Token: SeCreatePagefilePrivilege 2224 WMIC.exe Token: SeBackupPrivilege 2224 WMIC.exe Token: SeRestorePrivilege 2224 WMIC.exe Token: SeShutdownPrivilege 2224 WMIC.exe Token: SeDebugPrivilege 2224 WMIC.exe Token: SeSystemEnvironmentPrivilege 2224 WMIC.exe Token: SeRemoteShutdownPrivilege 2224 WMIC.exe Token: SeUndockPrivilege 2224 WMIC.exe Token: SeManageVolumePrivilege 2224 WMIC.exe Token: 33 2224 WMIC.exe Token: 34 2224 WMIC.exe Token: 35 2224 WMIC.exe Token: SeIncreaseQuotaPrivilege 2224 WMIC.exe Token: SeSecurityPrivilege 2224 WMIC.exe Token: SeTakeOwnershipPrivilege 2224 WMIC.exe Token: SeLoadDriverPrivilege 2224 WMIC.exe Token: SeSystemProfilePrivilege 2224 WMIC.exe Token: SeSystemtimePrivilege 2224 WMIC.exe Token: SeProfSingleProcessPrivilege 2224 WMIC.exe Token: SeIncBasePriorityPrivilege 2224 WMIC.exe Token: SeCreatePagefilePrivilege 2224 WMIC.exe Token: SeBackupPrivilege 2224 WMIC.exe Token: SeRestorePrivilege 2224 WMIC.exe Token: SeShutdownPrivilege 2224 WMIC.exe Token: SeDebugPrivilege 2224 WMIC.exe Token: SeSystemEnvironmentPrivilege 2224 WMIC.exe Token: SeRemoteShutdownPrivilege 2224 WMIC.exe Token: SeUndockPrivilege 2224 WMIC.exe Token: SeManageVolumePrivilege 2224 WMIC.exe Token: 33 2224 WMIC.exe Token: 34 2224 WMIC.exe Token: 35 2224 WMIC.exe Token: SeBackupPrivilege 2300 wbengine.exe Token: SeRestorePrivilege 2300 wbengine.exe Token: SeSecurityPrivilege 2300 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
CoinMama.exesvchost.execmd.execmd.execmd.exedescription pid process target process PID 1732 wrote to memory of 2500 1732 CoinMama.exe svchost.exe PID 1732 wrote to memory of 2500 1732 CoinMama.exe svchost.exe PID 1732 wrote to memory of 2500 1732 CoinMama.exe svchost.exe PID 2500 wrote to memory of 2808 2500 svchost.exe cmd.exe PID 2500 wrote to memory of 2808 2500 svchost.exe cmd.exe PID 2500 wrote to memory of 2808 2500 svchost.exe cmd.exe PID 2808 wrote to memory of 2892 2808 cmd.exe vssadmin.exe PID 2808 wrote to memory of 2892 2808 cmd.exe vssadmin.exe PID 2808 wrote to memory of 2892 2808 cmd.exe vssadmin.exe PID 2808 wrote to memory of 2224 2808 cmd.exe WMIC.exe PID 2808 wrote to memory of 2224 2808 cmd.exe WMIC.exe PID 2808 wrote to memory of 2224 2808 cmd.exe WMIC.exe PID 2500 wrote to memory of 2964 2500 svchost.exe cmd.exe PID 2500 wrote to memory of 2964 2500 svchost.exe cmd.exe PID 2500 wrote to memory of 2964 2500 svchost.exe cmd.exe PID 2964 wrote to memory of 1648 2964 cmd.exe bcdedit.exe PID 2964 wrote to memory of 1648 2964 cmd.exe bcdedit.exe PID 2964 wrote to memory of 1648 2964 cmd.exe bcdedit.exe PID 2964 wrote to memory of 1100 2964 cmd.exe bcdedit.exe PID 2964 wrote to memory of 1100 2964 cmd.exe bcdedit.exe PID 2964 wrote to memory of 1100 2964 cmd.exe bcdedit.exe PID 2500 wrote to memory of 2600 2500 svchost.exe cmd.exe PID 2500 wrote to memory of 2600 2500 svchost.exe cmd.exe PID 2500 wrote to memory of 2600 2500 svchost.exe cmd.exe PID 2600 wrote to memory of 1616 2600 cmd.exe wbadmin.exe PID 2600 wrote to memory of 1616 2600 cmd.exe wbadmin.exe PID 2600 wrote to memory of 1616 2600 cmd.exe wbadmin.exe PID 2500 wrote to memory of 2908 2500 svchost.exe NOTEPAD.EXE PID 2500 wrote to memory of 2908 2500 svchost.exe NOTEPAD.EXE PID 2500 wrote to memory of 2908 2500 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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1732 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops desktop.ini file(s)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2500 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2808 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2892
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2224
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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:2964 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1648
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1100
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2600 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1616
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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:2908
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3012
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2300
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2944
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2988
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
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD522577d64a5f3bc0195a15faee68d6656
SHA1f33c59571258195a04cb5bd332cefc2efcaee23a
SHA256d2bc1039a06522c7a124a3d612cf7e848bbf6848a5d7551b019937c69e79df4e
SHA51260627178f6252678e77e4f6dbf780d88ad2f77e23a7d96c8398922b5d4fd65aeff85f60f179e690dc76acfc7e073c9c40fe4c5acdee7be8844a06bc006df57a7
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Filesize
29KB
MD5c5a36a4a7e558ad587a7087d72a72c7c
SHA13edc0fff5092983a4ae664c006dd5a94843eb715
SHA2561461362ebd3b8710610c59cd2aa00f435330bd9d8f75ba4105617b0205cd932b
SHA512c14b21e5e251449c6ad4ea29fc69ec5fc6586e16672d40cf019f6d9d63955d37b972c41b7e5a460a61059bf024647c4b9af7104237a87a96553a0276d6ef6986
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0