locky | 4d6aa12717b547f1e5ea64a0ec5ae70e569a5f87d10dee4beb8dee135eb0d24e

Analysis

max time kernel
140s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
12/07/2022, 03:04

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General

Target
jhdsgvc74.exe
Size 654KB
Sample220712-dkngfaahb7
SHA256 3a810cbad7296f83122c4a16b935a723d8019419069a55c939d93c246abed2ac
MD5 693ef59145aa6b9e329f91538855ef64
SHA1 e3067d7c7227af026c0abfbdf7b417c4e294f380
SHA512 3f0ad7a869823d63d1867f4bf2322e88a909324bab80e7e6d8906237db0aea669326030f16a337980681cfd94c86a955ccb2747ff41be0bf75da112a53693a6b
MD5 SHA1 SHA512

Score

10^/10

locky persistence ransomware

Malware Config

Signatures

Locky
Ransomware strain released in 2016, with advanced features like anti-analysis.
ransomware locky
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

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-1-5-21-2632097139-1792035885-811742494-1000\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-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\ykcol.bmp"	jhdsgvc74.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\ee11c0ec-d055-4a60-916e-de9443999d06.tmp	setup.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\20220712052411.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

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1804	vssadmin.exe

Modifies Control Panel 2 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\Desktop\WallpaperStyle = "0"	jhdsgvc74.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\Desktop\TileWallpaper = "0"	jhdsgvc74.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
4024	msedge.exe
4024	msedge.exe
4000	msedge.exe
4000	msedge.exe
448	identity_helper.exe
448	identity_helper.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs

pid	Process
4000	msedge.exe
4000	msedge.exe
4000	msedge.exe
4000	msedge.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1732	vssvc.exe
Token: SeRestorePrivilege	1732	vssvc.exe
Token: SeAuditPrivilege	1732	vssvc.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
4000	msedge.exe
4000	msedge.exe
4000	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 4000	396	jhdsgvc74.exe	87
PID 396 wrote to memory of 4000	396	jhdsgvc74.exe	87
PID 396 wrote to memory of 176	396	jhdsgvc74.exe	88
PID 396 wrote to memory of 176	396	jhdsgvc74.exe	88
PID 396 wrote to memory of 176	396	jhdsgvc74.exe	88
PID 4000 wrote to memory of 3756	4000	msedge.exe	90
PID 4000 wrote to memory of 3756	4000	msedge.exe	90
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 3688	4000	msedge.exe	93
PID 4000 wrote to memory of 4024	4000	msedge.exe	94
PID 4000 wrote to memory of 4024	4000	msedge.exe	94
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95
PID 4000 wrote to memory of 4832	4000	msedge.exe	95

C:\Users\Admin\AppData\Local\Temp\jhdsgvc74.exe
"C:\Users\Admin\AppData\Local\Temp\jhdsgvc74.exe"
1⤵
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Suspicious use of WriteProcessMemory
PID:396
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument C:\Users\Admin\Desktop\ykcol.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:4000
- - 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,0x100,0xd4,0x104,0x7ff89bca46f8,0x7ff89bca4708,0x7ff89bca4718
    3⤵
    PID:3756
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2144,11195458827175732410,10463426305003299095,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2196 /prefetch:2
    3⤵
    PID:3688
- - 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=2144,11195458827175732410,10463426305003299095,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2276 /prefetch:3
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4024
- - 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=2144,11195458827175732410,10463426305003299095,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2684 /prefetch:8
    3⤵
    PID:4832
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2144,11195458827175732410,10463426305003299095,131072 --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=3344 /prefetch:1
    3⤵
    PID:4744
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2144,11195458827175732410,10463426305003299095,131072 --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=3368 /prefetch:1
    3⤵
    PID:4964
- - 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=2144,11195458827175732410,10463426305003299095,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4804 /prefetch:8
    3⤵
    PID:4128
- - 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=2144,11195458827175732410,10463426305003299095,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5772 /prefetch:8
    3⤵
    PID:4920
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2144,11195458827175732410,10463426305003299095,131072 --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=5836 /prefetch:1
    3⤵
    PID:4760
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2144,11195458827175732410,10463426305003299095,131072 --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=5852 /prefetch:1
    3⤵
    PID:3496
- - 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=2144,11195458827175732410,10463426305003299095,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3504 /prefetch:8
    3⤵
    PID:2340
- - 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:5068
  - - 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,0x7ff79bcd5460,0x7ff79bcd5470,0x7ff79bcd5480
      4⤵
      PID:4500
- - 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=2144,11195458827175732410,10463426305003299095,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3504 /prefetch:8
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:448
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\jhdsgvc74.exe"
  2⤵
  PID:176

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1732

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /Quiet /All
1⤵
- Interacts with shadow copies
PID:1804

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:532

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

ykcol.htm

Path C:\Users\Admin\Desktop\ykcol.htm
Size 8KB
SHA256 8f4314e59f44f4fe1f69dbd4e2b5e0eb4be30b1a1fcef20e5706248df4e805fb
MD5 69b374fafa5d5517389affaed5f711a8
SHA1 db3580c69e0af4584d5c0a16b7afb2e4a5ac5c37
SHA512 effe2568c52f32caf2c2e70039a13e77c2009b2b762be1f7df35d95af52170366f92180138ea48724b4f6f160e0ac60579b8113561e7c3533bcffaba21df2016
SSDEEP 48:L+ES74Xh/KMRv2CyCc515O7SPy0cSsuo7isTJdvTtp/lcqe0ihQp/:L+E+2tvsX1Xi/JdvTbBe7uV
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/396-131-0x0000000000400000-0x00000000004A6000-memory.dmp

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memory/396-130-0x0000000000400000-0x00000000004A6000-memory.dmp

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