2bbc9ca3dd089960d184b1a1872c16772c4ec085802e33cc7bb9e9aef3726cf2

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 05:29

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General

Target

10046c5939e4e72be8c702304178a2cb.exe
Size

23KB
MD5

10046c5939e4e72be8c702304178a2cb
SHA1

a78ee0bc2e33c9503c82dfb0fa6a765413544ead
SHA256

2bbc9ca3dd089960d184b1a1872c16772c4ec085802e33cc7bb9e9aef3726cf2
SHA512

73324c6773bc31428c7484c06b9ec39463724afe10bab2270de6c6cc74da50b057ba8bb1b0890e286c0c48cf556119ee3781e80d84fdb02986e7efabef2aeb0c
SSDEEP

384:oomgjHNYqsuTBK74KSJFkki22vlRLWl2QSj+UFmWB2QjFd:ooVjHNYq1TBK7EF42GL20hFmyZ

Score

7^/10

discovery persistence ransomware upx

Malware Config

Signatures

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1772-0-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral2/memory/1772-3-0x0000000000400000-0x000000000044D000-memory.dmp	upx
behavioral2/memory/1772-58-0x0000000000400000-0x000000000044D000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\BluetoothAuthorizationAgent = "C:\\Windows\\system32\\BluetoothAuthorizationAgent.exe"	10046c5939e4e72be8c702304178a2cb.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\lcjihob.bmp	10046c5939e4e72be8c702304178a2cb.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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\Desktop\Wallpaper = "C:\\Windows\\system32\\lcjihob.bmp"	10046c5939e4e72be8c702304178a2cb.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	10046c5939e4e72be8c702304178a2cb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	10046c5939e4e72be8c702304178a2cb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	10046c5939e4e72be8c702304178a2cb.exe

Modifies Control Panel 5 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\Desktop\OriginalWallpaper = "C:\\Windows\\system32\\lcjihob.bmp"	10046c5939e4e72be8c702304178a2cb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\Desktop\ConvertedWallpaper = "C:\\Windows\\system32\\lcjihob.bmp"	10046c5939e4e72be8c702304178a2cb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\Colors\Background = "0 0 255"	10046c5939e4e72be8c702304178a2cb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\Desktop\WallpaperStyle = "0"	10046c5939e4e72be8c702304178a2cb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\Desktop\TileWallpaper = "0"	10046c5939e4e72be8c702304178a2cb.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1772	10046c5939e4e72be8c702304178a2cb.exe
1772	10046c5939e4e72be8c702304178a2cb.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1772	10046c5939e4e72be8c702304178a2cb.exe

C:\Users\Admin\AppData\Local\Temp\10046c5939e4e72be8c702304178a2cb.exe
"C:\Users\Admin\AppData\Local\Temp\10046c5939e4e72be8c702304178a2cb.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Sets desktop wallpaper using registry
- Checks processor information in registry
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
PID:1772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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\AppData\Local\Temp\.tt89A5.tmp

Filesize
2KB

MD5
5f34a6eb224c9104c676d66f31c122f0

SHA1
169200a21919ccc7afca9a5746b7fa5b2d86da6d

SHA256
931688d894557a985f5bbfec7fef553ad40cddb7a99301ed847b9aa615797664

SHA512
dce0bdcab85f5cf18d92d93b7268107d7a2fd46e7a642d8ed2e391b0ef0e8d2e085488b30d22a7dfafd5d70dbb006943abe2f7c075aac0074578e0f38ae77bc2

Download Submit
memory/1772-0-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1772-1-0x0000000000460000-0x0000000000490000-memory.dmp

Filesize
192KB

Download
memory/1772-3-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1772-58-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1772-71-0x0000000000460000-0x0000000000490000-memory.dmp

Filesize
192KB

Download