Analysis
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max time kernel
151s -
max time network
131s -
platform
windows10_x64 -
resource
win10-en-20211104 -
submitted
18-11-2021 14:03
Static task
static1
Behavioral task
behavioral1
Sample
20161205_bc36f1ce16f62adcd3368593f2c4ece0.js
Resource
win7-en-20211014
Behavioral task
behavioral2
Sample
20161205_bc36f1ce16f62adcd3368593f2c4ece0.js
Resource
win10-en-20211104
General
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Target
20161205_bc36f1ce16f62adcd3368593f2c4ece0.js
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Size
12KB
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MD5
ec1eaa7630980202c2ea84f4f99d8f14
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SHA1
7458ab3e869639e7e4fa55dd98994961ebd94f66
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SHA256
d3f7159425c0e6b1c076d12eacb62345188cd9fbc7fb74052a5b3b220df91e2f
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SHA512
9ff4b87c973694ae2ddf8102b06d9de2dc1758d71e70239cd2ade1e83352f1e324d225bd6a63d2045631f52e34c96c774af24fb8fdaa7e35598349f99cf92d9f
Malware Config
Signatures
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Locky
Ransomware strain released in 2016, with advanced features like anti-analysis.
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Locky (Osiris variant)
Variant of the Locky ransomware seen in the wild since early 2017.
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Blocklisted process makes network request 11 IoCs
Processes:
wscript.exerundll32.exeflow pid process 9 3584 wscript.exe 12 3584 wscript.exe 13 3584 wscript.exe 15 3584 wscript.exe 18 3584 wscript.exe 20 3584 wscript.exe 37 812 rundll32.exe 45 812 rundll32.exe 46 812 rundll32.exe 48 812 rundll32.exe 49 812 rundll32.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 812 rundll32.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\DesktopOSIRIS.bmp" rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies Control Panel 2 IoCs
Processes:
rundll32.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Control Panel\Desktop\WallpaperStyle = "0" rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Control Panel\Desktop\TileWallpaper = "0" rundll32.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
wscript.exerundll32.exedescription pid process target process PID 3584 wrote to memory of 492 3584 wscript.exe rundll32.exe PID 3584 wrote to memory of 492 3584 wscript.exe rundll32.exe PID 492 wrote to memory of 812 492 rundll32.exe rundll32.exe PID 492 wrote to memory of 812 492 rundll32.exe rundll32.exe PID 492 wrote to memory of 812 492 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\20161205_bc36f1ce16f62adcd3368593f2c4ece0.js1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\MTCLMW~1.ZK,TOxNKCZjUHCfTf9D2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Local\Temp\MTCLMW~1.ZK,TOxNKCZjUHCfTf9D3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Sets desktop wallpaper using registry
- Modifies Control Panel
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\MTCLMW~1.ZKMD5
6b760fbbefa7f8dd1daaa93ebc38725a
SHA181841f24244485dae1c1834df3e544893d258f06
SHA256c564dcc24fa9909a4482feb46d52fa96869a2ad6c8c87b5cbeee19b9b36a0ff6
SHA5126ea91469538c40dada22b66373da0deb57f48d9d535e5ebd8199b5074a26c93a297386389a58468032dec1aef36423271d7ffaf84feba772b531c9ccd46fc68a
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\Users\Admin\AppData\Local\Temp\MTCLMW~1.ZKMD5
6b760fbbefa7f8dd1daaa93ebc38725a
SHA181841f24244485dae1c1834df3e544893d258f06
SHA256c564dcc24fa9909a4482feb46d52fa96869a2ad6c8c87b5cbeee19b9b36a0ff6
SHA5126ea91469538c40dada22b66373da0deb57f48d9d535e5ebd8199b5074a26c93a297386389a58468032dec1aef36423271d7ffaf84feba772b531c9ccd46fc68a
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memory/492-118-0x0000000000000000-mapping.dmp
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memory/812-120-0x0000000000000000-mapping.dmp
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memory/812-122-0x0000000003070000-0x0000000003071000-memory.dmpFilesize
4KB
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memory/812-123-0x0000000074250000-0x000000007428A000-memory.dmpFilesize
232KB