4daaba19d412cdf3838a0c373cdc9b7cfc26423723307482e4b0f946909c726e

Analysis

max time kernel
163s
max time network
302s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
16-01-2023 12:50

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General

Target

OBS/Configuration/About/UserMgrProxy.dll
Size

275KB
MD5

f22ecae2e79eeb94c51a16ab42d3525f
SHA1

57451745ae71e2fa290924d5105dfb7394b65944
SHA256

bb259c649d501159d9b40558ef5d2c6bc0d8211c1ba4dbb9c94a28f8d5f58259
SHA512

a619f8ae06099f7b924175fb050beeff2d099e0f7b1161ac5723b874b5381825d2767f72a588ae211cfbaa1d676b81e3172572a70fed09b42e74e3ba992cd296
SSDEEP

3072:BPav24GoaUgMck/d1LtmglPMBhADp7l9iyc3Jl4XmBn+R3pQVZE66M4ogYNVU:BPabGoajMck/d1LFiBhhYpQVZDT3

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{19E2CD85-2AA6-488F-83F4-9C9CE96CB421}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{70F3A8F6-DD20-47BE-AFF8-4503CCC3ED74}.catalogItem	svchost.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

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\OBS\Configuration\About\UserMgrProxy.dll,#1
1⤵
PID:4348

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4188

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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