locky | f329ea2c754ab196d15c20fbf9abd722fa63630631144c5a409bd2a20172196b

General

Target

V7bTrYJ4lbO6OS.dll
Size

159KB
MD5

7932ee5fa6f83b149569752c47e04b87
SHA1

6eb115feadc5808507fb5a666dd18aa89a45616c
SHA256

f329ea2c754ab196d15c20fbf9abd722fa63630631144c5a409bd2a20172196b
SHA512

17ba26e69f7536f5adaa52454fbd407338be61d97bc396baa591de9fa19aab3e539b4ca32059b2ddb1b901ac7ecd341dff9ead706fc0d058086e6b3795642f58
SSDEEP

3072:pusrpo1j49JvKa0ePbh37E6ZO78buZKxrF:ZQcvKpE37E6nmKhF

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

Processes:

rundll32.exe

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

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

Processes:

rundll32.exe

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

Processes:

msedge.exe

description ioc process

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

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

Processes:

rundll32.exe

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

Processes:

setup.exe

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

Processes:

msedge.exe

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

Processes:

rundll32.exe

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

Processes:

msedge.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ msedge.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

msedge.exemsedge.exeidentity_helper.exe

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

Processes:

msedge.exe

pid process

1040 msedge.exe
1040 msedge.exe
1040 msedge.exe
1040 msedge.exe
Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

msedge.exe

pid process

1040 msedge.exe
1040 msedge.exe
1040 msedge.exe

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

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

pid	process
1040	msedge.exe
1040	msedge.exe
1040	msedge.exe
1040	msedge.exe

pid	process
1040	msedge.exe
1040	msedge.exe
1040	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

rundll32.exerundll32.exemsedge.exe

description	pid	process	target process
PID 2384 wrote to memory of 2624	2384	rundll32.exe	rundll32.exe
PID 2384 wrote to memory of 2624	2384	rundll32.exe	rundll32.exe
PID 2384 wrote to memory of 2624	2384	rundll32.exe	rundll32.exe
PID 2624 wrote to memory of 1040	2624	rundll32.exe	msedge.exe
PID 2624 wrote to memory of 1040	2624	rundll32.exe	msedge.exe
PID 1040 wrote to memory of 1488	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 1488	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2976	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2444	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 2444	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe
PID 1040 wrote to memory of 3588	1040	msedge.exe	msedge.exe

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 Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Defacement

1

T1491

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Downloads

C:\Users\Admin\DesktopOSIRIS.htm
Filesize
8KB

MD5
30d4547656a5c8a0c19eab2c70676091

SHA1
b9c1a8a241f6adc9c041bf508c41b213ac9d1304

SHA256
d32916d9bc26fb2e226692e969653aa4f64b6966a87e71f785853e8ea80e3e29

SHA512
8bb778aee08c4c6d1bdeb2d7bde6ad46b4ac0ad60c9aef0669c8c5c018eb1f72efefc2908dc6282752aa293e03c5ffe44b780cf88ad782c65010071003071753

Download Submit
\??\pipe\LOCAL\crashpad_1040_CJVVLPRWDMEIGRZO
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/344-151-0x0000000000000000-mapping.dmp

Download
memory/976-160-0x0000000000000000-mapping.dmp

Download
memory/1040-137-0x0000000000000000-mapping.dmp

Download
memory/1488-138-0x0000000000000000-mapping.dmp

Download
memory/1604-146-0x0000000000000000-mapping.dmp

Download
memory/2444-141-0x0000000000000000-mapping.dmp

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

Filesize
200KB

Download
memory/2624-132-0x0000000000000000-mapping.dmp

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

Filesize
200KB

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

Filesize
200KB

Download
memory/2976-140-0x0000000000000000-mapping.dmp

Download
memory/3588-144-0x0000000000000000-mapping.dmp

Download
memory/3776-148-0x0000000000000000-mapping.dmp

Download
memory/3788-158-0x0000000000000000-mapping.dmp

Download
memory/3844-153-0x0000000000000000-mapping.dmp

Download
memory/3976-157-0x0000000000000000-mapping.dmp

Download
memory/4212-159-0x0000000000000000-mapping.dmp

Download
memory/4924-155-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads