331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8

Analysis

max time kernel
158s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
05/12/2022, 19:26

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General

Target

331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe
Size

809KB
MD5

4de339ceceaaecbaa3d7d9ee12774ec0
SHA1

d9b8919c0868b7e34cbd7853486482cd805e4912
SHA256

331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8
SHA512

3f1339abea21f027380e9ae8671529e63472487b7f5cc376a5e6cbc027d5302e1637f2075871d7335163d6c02d2e4333ccb1f811aa9d54122dccdd009da1ff64
SSDEEP

12288:0H7Wcjdc/r2sxxiPGGAOOPSXDV8ClgVYhX5FSsf8QI6raeH4lviM3Z7b:0bCj2sObHtqQ4QI6lH4lqM3Z7b

Score

8^/10

persistence

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\34063 = "C:\\PROGRA~3\\LOCALS~1\\Temp\\mswuxrc.com"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	svchost.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\disk\enum	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4740 set thread context of 4832	4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe	80

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\PROGRA~3\LOCALS~1\Temp\mswuxrc.com	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4832	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe
4832	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
4832	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe
4832	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe
4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe
4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe
4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe
4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 4832	4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe	80
PID 4740 wrote to memory of 4832	4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe	80
PID 4740 wrote to memory of 4832	4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe	80
PID 4740 wrote to memory of 4832	4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe	80
PID 4740 wrote to memory of 4832	4740	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe	80
PID 4832 wrote to memory of 3008	4832	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe	81
PID 4832 wrote to memory of 3008	4832	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe	81
PID 4832 wrote to memory of 3008	4832	331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe	81

C:\Users\Admin\AppData\Local\Temp\331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe
"C:\Users\Admin\AppData\Local\Temp\331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Users\Admin\AppData\Local\Temp\331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe
  "C:\Users\Admin\AppData\Local\Temp\331dfdf31cd1f922b8d15b20dd53e36101dd664db71ea79d290e91d6f8fe98b8.exe"
  2⤵
  - Maps connected drives based on registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:4832
- - C:\Windows\SysWOW64\svchost.exe
    C:\Windows\syswow64\svchost.exe
    3⤵
    - Adds policy Run key to start application
    - Drops file in Program Files directory
    PID:3008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3008-135-0x0000000000790000-0x000000000079E000-memory.dmp

Filesize
56KB

Download
memory/3008-136-0x00000000003E0000-0x00000000003E5000-memory.dmp

Filesize
20KB

Download
memory/3008-137-0x00000000003E0000-0x00000000003E5000-memory.dmp

Filesize
20KB

Download
memory/4832-133-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download