locky | 21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6

Analysis

max time kernel
142s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
08-07-2022 09:31

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General

Target

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
Size

372KB
MD5

e3b3e285390c0e2f7d04bd040bec790d
SHA1

dbee71535e9f1fb23b3f01e25989d22d51237e68
SHA256

21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6
SHA512

6156a6b0ff4f41c823cba68a4596676e357ceb5b8c0848c2828a72321dbc2a731d9ae8f1a417fe27aef7de0080001ad3f77b3809b64a93c610ae99f95b35f5be

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

Modifies extensions of user files 1 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	\??\c:\Users\Admin\Pictures\MergeJoin.tiff	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.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-1-5-21-1809750270-3141839489-3074374771-1000\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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\DesktopOSIRIS.bmp"	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\e797f495-7717-45ef-b4fb-fc7a31ff0746.tmp	setup.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\20220708093316.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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\Desktop\WallpaperStyle = "0"	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\Desktop\TileWallpaper = "0"	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.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
4440	msedge.exe
4440	msedge.exe
2656	msedge.exe
2656	msedge.exe
4968	identity_helper.exe
4968	identity_helper.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4052	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs

pid	Process
2656	msedge.exe
2656	msedge.exe
2656	msedge.exe
2656	msedge.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2656	msedge.exe
2656	msedge.exe
2656	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 2656	4052	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	93
PID 4052 wrote to memory of 2656	4052	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	93
PID 4052 wrote to memory of 3864	4052	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	94
PID 4052 wrote to memory of 3864	4052	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	94
PID 4052 wrote to memory of 3864	4052	21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe	94
PID 2656 wrote to memory of 3048	2656	msedge.exe	95
PID 2656 wrote to memory of 3048	2656	msedge.exe	95
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 1904	2656	msedge.exe	99
PID 2656 wrote to memory of 4440	2656	msedge.exe	100
PID 2656 wrote to memory of 4440	2656	msedge.exe	100
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101
PID 2656 wrote to memory of 1460	2656	msedge.exe	101

C:\Users\Admin\AppData\Local\Temp\21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe
"C:\Users\Admin\AppData\Local\Temp\21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4052
- 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
  2⤵
  - 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:2656
- - 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=0xf8,0xfc,0x100,0xd4,0x104,0x7ff878a946f8,0x7ff878a94708,0x7ff878a94718
    3⤵
    PID:3048
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2088,8274346867451798143,11045672931750781947,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2156 /prefetch:2
    3⤵
    PID:1904
- - 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=2088,8274346867451798143,11045672931750781947,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2224 /prefetch:3
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4440
- - 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=2088,8274346867451798143,11045672931750781947,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2360 /prefetch:8
    3⤵
    PID:1460
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2088,8274346867451798143,11045672931750781947,131072 --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=3432 /prefetch:1
    3⤵
    PID:4444
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2088,8274346867451798143,11045672931750781947,131072 --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=3440 /prefetch:1
    3⤵
    PID:3388
- - 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=2088,8274346867451798143,11045672931750781947,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3572 /prefetch:8
    3⤵
    PID:3456
- - 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=2088,8274346867451798143,11045672931750781947,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5284 /prefetch:8
    3⤵
    PID:1424
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2088,8274346867451798143,11045672931750781947,131072 --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=5376 /prefetch:1
    3⤵
    PID:2828
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2088,8274346867451798143,11045672931750781947,131072 --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=5564 /prefetch:1
    3⤵
    PID:1556
- - 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=2088,8274346867451798143,11045672931750781947,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5320 /prefetch:8
    3⤵
    PID:3464
- - 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
    3⤵
    - Drops file in Program Files directory
    PID:4856
  - - 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,0x7ff720015460,0x7ff720015470,0x7ff720015480
      4⤵
      PID:4260
- - 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=2088,8274346867451798143,11045672931750781947,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5320 /prefetch:8
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4968
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\21a0201874af80436dc0a36e5cbaf7da9b75217b3e39b712f3850729cf47deb6.exe"
  2⤵
  PID:3864

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1396

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

C:\Users\Admin\DesktopOSIRIS.htm

Filesize
8KB

MD5
ef8b805b1c8ed9e76daa6a438281c9bb

SHA1
d58c32e2ac8f1a7ae5fb22a9c9f4805916f7cf57

SHA256
784be32d6c5c3c9c746f2c830bdbfc75dde835a115257643e147ebe990e2c4ff

SHA512
1984e21c05de2f9db13400665b59742778d6725d56bc8ee00414e2c6c8ab5ec607b57b5f52438ee542629e67920468adffe76c8aeabec9c71524b4c9cf356d20

Download Submit
memory/4052-134-0x0000000003AB0000-0x0000000003AD7000-memory.dmp

Filesize
156KB

Download
memory/4052-135-0x0000000003AB0000-0x0000000003AD7000-memory.dmp

Filesize
156KB

Download
memory/4052-130-0x0000000002F60000-0x0000000002F87000-memory.dmp

Filesize
156KB

Download
memory/4052-132-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4052-138-0x0000000003AB0000-0x0000000003AD7000-memory.dmp

Filesize
156KB

Download
memory/4052-131-0x0000000002F60000-0x0000000002F87000-memory.dmp

Filesize
156KB

Download