locky | f329ea2c754ab196d15c20fbf9abd722fa63630631144c5a409bd2a20172196b

Resubmissions

18/09/2022, 19:48

220918-yh3tkaffal10

18/09/2022, 18:14

220918-wveamafebk10

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
18/09/2022, 18:14

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General

Target
V7bTrYJ4lbO6OS.dll
Size 159KB
Sample220918-wveamafebk
SHA256 f329ea2c754ab196d15c20fbf9abd722fa63630631144c5a409bd2a20172196b
MD5 7932ee5fa6f83b149569752c47e04b87
SHA1 6eb115feadc5808507fb5a666dd18aa89a45616c
SHA512 17ba26e69f7536f5adaa52454fbd407338be61d97bc396baa591de9fa19aab3e539b4ca32059b2ddb1b901ac7ecd341dff9ead706fc0d058086e6b3795642f58
SSDEEP 3072:pusrpo1j49JvKa0ePbh37E6ZO78buZKxrF:ZQcvKpE37E6nmKhF
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

locky locky_osiris persistence ransomware

Malware Config

Signatures

Locky
Ransomware strain released in 2016, with advanced features like anti-analysis.
ransomware locky
Locky (Osiris variant)
Variant of the Locky ransomware seen in the wild since early 2017.
ransomware locky_osiris

Blocklisted process makes network request 6 IoCs

flow	pid	Process
23	2624	rundll32.exe
31	2624	rundll32.exe
32	2624	rundll32.exe
54	2624	rundll32.exe
78	2624	rundll32.exe
79	2624	rundll32.exe

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	\??\c:\Users\Admin\Pictures\SendConvertFrom.tiff	rundll32.exe
File opened for modification	\??\c:\Users\Admin\Pictures\UnregisterExit.tiff	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run	msedge.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\DesktopOSIRIS.bmp"	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\2a00b960-e48c-428b-9064-df8c20cc989c.tmp	setup.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\20220918181643.pma	setup.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	msedge.exe

Modifies Control Panel 2 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\Desktop\WallpaperStyle = "0"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\Desktop\TileWallpaper = "0"	rundll32.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	msedge.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2444	msedge.exe
2444	msedge.exe
1040	msedge.exe
1040	msedge.exe
976	identity_helper.exe
976	identity_helper.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs

pid	Process
1040	msedge.exe
1040	msedge.exe
1040	msedge.exe
1040	msedge.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
1040	msedge.exe
1040	msedge.exe
1040	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2624	2384	rundll32.exe	83
PID 2384 wrote to memory of 2624	2384	rundll32.exe	83
PID 2384 wrote to memory of 2624	2384	rundll32.exe	83
PID 2624 wrote to memory of 1040	2624	rundll32.exe	112
PID 2624 wrote to memory of 1040	2624	rundll32.exe	112
PID 1040 wrote to memory of 1488	1040	msedge.exe	113
PID 1040 wrote to memory of 1488	1040	msedge.exe	113
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2976	1040	msedge.exe	114
PID 1040 wrote to memory of 2444	1040	msedge.exe	115
PID 1040 wrote to memory of 2444	1040	msedge.exe	115
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117
PID 1040 wrote to memory of 3588	1040	msedge.exe	117

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\V7bTrYJ4lbO6OS.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\V7bTrYJ4lbO6OS.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Modifies extensions of user files
  - Sets desktop wallpaper using registry
  - Modifies Control Panel
  - Suspicious use of WriteProcessMemory
  PID:2624
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument C:\Users\Admin\DesktopOSIRIS.htm
    3⤵
    - Adds Run key to start application
    - Enumerates system info in registry
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:1040
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xd8,0xfc,0x100,0x44,0x104,0x7ff829e346f8,0x7ff829e34708,0x7ff829e34718
      4⤵
      PID:1488
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2148 /prefetch:2
      4⤵
      PID:2976
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2424 /prefetch:3
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2444
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3136 /prefetch:8
      4⤵
      PID:3588
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3712 /prefetch:1
      4⤵
      PID:1604
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3728 /prefetch:1
      4⤵
      PID:3776
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5188 /prefetch:8
      4⤵
      PID:344
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5400 /prefetch:8
      4⤵
      PID:3844
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2932 /prefetch:1
      4⤵
      PID:4924
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5588 /prefetch:1
      4⤵
      PID:3976
  - - C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3940 /prefetch:8
      4⤵
      PID:2488
  - - C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --configure-user-settings --verbose-logging --system-level --msedge --force-configure-user-settings
      4⤵
      Drops file in Program Files directory
      PID:3788
    - - C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
        
        "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\TEMP\MsEdgeCrashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0x7ff7a3115460,0x7ff7a3115470,0x7ff7a3115480
        5⤵
        
        PID:4212
  - - C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2104,17093371862626279908,9983726689061986837,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3940 /prefetch:8
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:976

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4244

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:568

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

DesktopOSIRIS.htm

Path C:\Users\Admin\DesktopOSIRIS.htm
Size 8KB
SHA256 d32916d9bc26fb2e226692e969653aa4f64b6966a87e71f785853e8ea80e3e29
MD5 30d4547656a5c8a0c19eab2c70676091
SHA1 b9c1a8a241f6adc9c041bf508c41b213ac9d1304
SHA512 8bb778aee08c4c6d1bdeb2d7bde6ad46b4ac0ad60c9aef0669c8c5c018eb1f72efefc2908dc6282752aa293e03c5ffe44b780cf88ad782c65010071003071753
SSDEEP 48:r0sK9PK9UdU6waruVA4IS95WUbSPyIESsYzpCATXC1xRddl6o+BGpeaYHTj2+CRi:Is0ndUPVDEntjYxlUo+Ta7i73yB6
MD5 SHA1 SHA512 SSDEEP

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memory/2624-135-0x0000000075850000-0x0000000075882000-memory.dmp

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memory/2624-136-0x0000000075850000-0x0000000075882000-memory.dmp

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memory/2624-133-0x0000000075850000-0x0000000075882000-memory.dmp

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