locky | 33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f

Analysis

max time kernel
157s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
20-06-2022 01:04

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General

Target

33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe
Size

580KB
MD5

86927f4d92665747679ab72a9be87b05
SHA1

35549e85c4cb875e1710afaf274aeead50e06752
SHA256

33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f
SHA512

33255234e1a1a7c19d92e503a57cecef9e1cb46ff5472f2416772a0e9087c111edded597618bb73ee8494c0bc23924d97396b1bc5f2657e946c6e1552696381f

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

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\SuspendDisable.tiff	33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.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-1-5-21-1081944012-3634099177-1681222835-1000\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-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\ykcol.bmp"	33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\814eb508-a3c0-446d-b04e-11a28a0a28dd.tmp	setup.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\20220415003018.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 4 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe
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
4788	vssadmin.exe

Modifies Control Panel 2 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\Desktop\WallpaperStyle = "0"	33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\Desktop\TileWallpaper = "0"	33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.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 4 IoCs

pid	Process
1736	msedge.exe
1736	msedge.exe
5008	msedge.exe
5008	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs

pid	Process
5008	msedge.exe
5008	msedge.exe
5008	msedge.exe
5008	msedge.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	4264	vssvc.exe
Token: SeRestorePrivilege	4264	vssvc.exe
Token: SeAuditPrivilege	4264	vssvc.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
5008	msedge.exe
5008	msedge.exe
5008	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 936 wrote to memory of 5008	936	33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe	97
PID 936 wrote to memory of 5008	936	33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe	97
PID 936 wrote to memory of 2500	936	33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe	98
PID 936 wrote to memory of 2500	936	33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe	98
PID 936 wrote to memory of 2500	936	33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe	98
PID 5008 wrote to memory of 3596	5008	msedge.exe	100
PID 5008 wrote to memory of 3596	5008	msedge.exe	100
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 2308	5008	msedge.exe	101
PID 5008 wrote to memory of 1736	5008	msedge.exe	102
PID 5008 wrote to memory of 1736	5008	msedge.exe	102
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104
PID 5008 wrote to memory of 3524	5008	msedge.exe	104

C:\Users\Admin\AppData\Local\Temp\33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe
"C:\Users\Admin\AppData\Local\Temp\33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Enumerates system info in registry
- Modifies Control Panel
- Suspicious use of WriteProcessMemory
PID:936
- 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:5008
- - 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,0x100,0xd4,0x104,0x7ff8782146f8,0x7ff878214708,0x7ff878214718
    3⤵
    PID:3596
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2112,11215952028958826612,12583580428928963016,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2148 /prefetch:2
    3⤵
    PID:2308
- - 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=2112,11215952028958826612,12583580428928963016,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2548 /prefetch:3
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:1736
- - 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=2112,11215952028958826612,12583580428928963016,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3448 /prefetch:8
    3⤵
    PID:3524
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2112,11215952028958826612,12583580428928963016,131072 --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=4016 /prefetch:1
    3⤵
    PID:1640
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2112,11215952028958826612,12583580428928963016,131072 --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=4028 /prefetch:1
    3⤵
    PID:3976
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2112,11215952028958826612,12583580428928963016,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5388 /prefetch:1
    3⤵
    PID:5044
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2112,11215952028958826612,12583580428928963016,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5428 /prefetch:1
    3⤵
    PID:3960
- - 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=2112,11215952028958826612,12583580428928963016,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5968 /prefetch:8
    3⤵
    PID:1076
- - 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:4916
  - - 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,0x7ff7838a5460,0x7ff7838a5470,0x7ff7838a5480
      4⤵
      PID:4532
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\33b62b95281bb0ecbad2523bb99e4853fd516044b8f2b42ef4a1e29903e7bd0f.exe"
  2⤵
  PID:2500

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4264

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /Quiet /All
1⤵
- Interacts with shadow copies
PID:4788

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1364

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

C:\Users\Admin\Desktop\ykcol.htm

Filesize
8KB

MD5
7b43592d6908b8ad4784cbe6322c245e

SHA1
0daab288bc85e7ea0addb464d0c75640b598fe2a

SHA256
65b6dc189eb419c729f135d8bac64e25971b7035c45b7abd595b17a7e1260466

SHA512
b18dfa3fcc42ce02607007fa7af9a1876062b0a53ce8bb91dcbdaa94a7e43d49ed71e3c7b462bc2ec976c1a5ec1c92cac633e7b0b774daba9284a90d04077b1f

Download Submit
memory/936-131-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download
memory/936-130-0x0000000000400000-0x0000000000494000-memory.dmp

Filesize
592KB

Download