Analysis
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max time kernel
122s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
31-05-2024 04:37
Static task
static1
Behavioral task
behavioral1
Sample
ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe
Resource
win10v2004-20240426-en
General
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Target
ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe
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Size
256KB
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MD5
d6b0b65300c7f9c0b700ab21f58990cc
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SHA1
1148829c7032b7c5907337b20902c70a584710a9
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SHA256
ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108
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SHA512
e7671432d936a800588859b6c878efba1a0e60b42abc5b0286420dd39cc612f67a2779c1f4d5870060b69446778c6207f6ef840125c73decfa765b910d5e8590
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SSDEEP
6144:BG2/9A5wlFbBkPj8uYDJTVmxAznfcFf0UoEF:k2VA5wlFbBkPj8uqJqkfcFfHoE
Malware Config
Extracted
C:\Recovery\8f60a382-0d98-11ef-817d-5aba25856535\README.d055bb79.TXT
darkside
http://dark24vx6fsmdrtbzdzjv6ckz4yqyued4uz455oqpctko7m6vbrzibad.onion/86GND2UGQRIP7OXI4KAHWDF3QR4ZDTJ3GGZA02KJYG7H6UDZ2U0DVB03WIUKOK73
Signatures
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DarkSide
Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.
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Renames multiple (159) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\F: ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe -
Drops file in System32 directory 9 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\.obs32\{4F4D4544-4DEFB15F-B421206A-EB91457D}.Debug ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Obsidium\{4F4D4544-4DEFB15F-B421206A-EB91457D}.Environment ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\.obs32\{4F4D4544-4DEFB15F-B421206A-EB91457D}.Debug ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Obsidium\{4F4D4544-4DEFB15F-B421206A-EB91457D}.Environment ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Obsidium\{4F4D4544-4DEFB15F-B421206A-EB91457D}.Environment ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\.obs32\{4F4D4544-4DEFB15F-B421206A-EB91457D}.Debug ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Obsidium\{4F4D4544-4DEFB15F-B421206A-EB91457D}.Environment ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\.obs32\{4F4D4544-4DEFB15F-B421206A-EB91457D}.Debug ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\d055bb79.BMP" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe -
Modifies Control Panel 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Control Panel\Desktop\WallpaperStyle = "10" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Control Panel\Desktop ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe -
Modifies data under HKEY_USERS 26 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4305C44B-8317-442B-AF0B-5F45EE59394D}\WpadNetworkName = "Network 3" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-1e-bf-8a-07-66 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-1e-bf-8a-07-66\WpadDecision = "0" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-1e-bf-8a-07-66\WpadDecisionTime = d0f7955314b3da01 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\USER\.DEFAULT\Control Panel\International ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4305C44B-8317-442B-AF0B-5F45EE59394D}\WpadDecisionReason = "1" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4305C44B-8317-442B-AF0B-5F45EE59394D}\WpadDecision = "0" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4305C44B-8317-442B-AF0B-5F45EE59394D}\ee-1e-bf-8a-07-66 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ee-1e-bf-8a-07-66\WpadDecisionReason = "1" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f001e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4305C44B-8317-442B-AF0B-5F45EE59394D} ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4305C44B-8317-442B-AF0B-5F45EE59394D}\WpadDecisionTime = d0f7955314b3da01 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (str) \REGISTRY\USER\.DEFAULT\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\d055bb79.BMP" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.d055bb79 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.d055bb79\ = "d055bb79" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\d055bb79\DefaultIcon ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\d055bb79 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\d055bb79\DefaultIcon\ = "C:\\ProgramData\\d055bb79.ico" ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2712 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 2712 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 2524 vssvc.exe Token: SeRestorePrivilege 2524 vssvc.exe Token: SeAuditPrivilege 2524 vssvc.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3048 wrote to memory of 2712 3048 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 29 PID 3048 wrote to memory of 2712 3048 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 29 PID 3048 wrote to memory of 2712 3048 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 29 PID 3048 wrote to memory of 2712 3048 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 29 PID 2712 wrote to memory of 2688 2712 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 33 PID 2712 wrote to memory of 2688 2712 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 33 PID 2712 wrote to memory of 2688 2712 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 33 PID 2712 wrote to memory of 2688 2712 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 33 PID 2712 wrote to memory of 2428 2712 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 35 PID 2712 wrote to memory of 2428 2712 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 35 PID 2712 wrote to memory of 2428 2712 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 35 PID 2712 wrote to memory of 2428 2712 ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe 35 -
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\ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe"C:\Users\Admin\AppData\Local\Temp\ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe"1⤵PID:1276
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C:\Users\Admin\AppData\Local\Temp\ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe"C:\Users\Admin\AppData\Local\Temp\ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe"1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3048 -
C:\Users\Admin\AppData\Local\Temp\ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe"C:\Users\Admin\AppData\Local\Temp\ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe"2⤵
- Drops file in System32 directory
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Modifies data under HKEY_USERS
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2712 -
C:\Users\Admin\AppData\Local\Temp\ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exeC:\Users\Admin\AppData\Local\Temp\ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe -work worker0 job0-27123⤵
- Drops file in System32 directory
PID:2688
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C:\Users\Admin\AppData\Local\Temp\ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exeC:\Users\Admin\AppData\Local\Temp\ea3c8766df6f8390dd6a0e411cec77eb8f5df0556935ea1d217f1938454d3108.exe -work worker1 job1-27123⤵
- Enumerates connected drives
- Drops file in System32 directory
PID:2428
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2524
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5046211676cf955ca2e617c5c7128f54a
SHA124b6307e85d33dd271471d397ea3f7169f600f7f
SHA256273c68d24bf1b305163237649cd0aff54679114a9fe43fad0c771a58e33e35db
SHA512e26659a23d25ca7d98e9aeb7f08671bfcc64fc41a03c4be40332a1a4f2e49f66499a4c3f96ec08024b7efdf7e45a2efaeb8a05d9eff59b0557b90870c8cb9fe9