50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0

Analysis

max time kernel
153s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2022 04:09

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General

Target

50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
Size

150KB
MD5

31ca2e8a5b59e40ca32a64e992d1ff47
SHA1

4691182ae6fc3f7f49ac5903bb5d33e76601dbf6
SHA256

50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0
SHA512

5393afca2087a1ee58fc862c7d979a31040bb0a2d48779b220d24346b941c212d61b08925f89678c80625c79752e605046147b89c9d562adcb9f5e98c4c57c67
SSDEEP

3072:Kecu88h/2yroutqzAoU+WuKurV9GqZghAs10jLAH:Kech8oyroSqvU+WlY8p0jLAH

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
30	3404	rundll32.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\WindowsDriver\Parameters\ServiceDll = "C:\\Windows\\system32\\WindowsDriver.dll"	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe

Loads dropped DLL 2 IoCs

pid	Process
3132	svchost.exe
3404	rundll32.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\IEHost2.txt	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\IETimes.txt	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\IEo.txt	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\IEHost2.txt	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
File opened for modification	C:\Windows\SysWOW64\IETimes.txt	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
File opened for modification	C:\Windows\SysWOW64\WindowsDriver.dll	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
File created	C:\Windows\SysWOW64\Uninstall alexa.exe	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4720	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
Token: SeDebugPrivilege	3132	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4720 wrote to memory of 5000	4720	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe	81
PID 4720 wrote to memory of 5000	4720	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe	81
PID 4720 wrote to memory of 5000	4720	50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe	81
PID 3132 wrote to memory of 3404	3132	svchost.exe	86
PID 3132 wrote to memory of 3404	3132	svchost.exe	86
PID 3132 wrote to memory of 3404	3132	svchost.exe	86

C:\Users\Admin\AppData\Local\Temp\50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe
"C:\Users\Admin\AppData\Local\Temp\50d4446d78d5293448ba3869a84928b80e3d1681d43ddad43bbe926973fb70d0.exe"
1⤵
- Sets DLL path for service in the registry
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4720
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\50D444~1.EXE > nul
  2⤵
  PID:5000

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k WindowsDriver
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3132
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe c:\windows\system32\windowsdriver.dll, ServiceMain
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Drops file in System32 directory
  PID:3404

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\WindowsDriver.dll

Filesize
75.1MB

MD5
332cdbfa909ca49ca23284f96c7c6831

SHA1
7a713194006bb2bbe422d529bf9c979a75da87ca

SHA256
9fcfe44de039a8632bb61bd14f2bd215f1602417f5ab177d04d84294da5f58d8

SHA512
1a6e759257a1b55bdadd9e7f125061741782a3d53fed4eef79dd26b6d44e0ae26446f0a37c95e2128646c7e602cfefd3979bd746391432d40fcb8c9bcd4df68f

Download Submit
C:\Windows\SysWOW64\WindowsDriver.dll

Filesize
75.1MB

MD5
332cdbfa909ca49ca23284f96c7c6831

SHA1
7a713194006bb2bbe422d529bf9c979a75da87ca

SHA256
9fcfe44de039a8632bb61bd14f2bd215f1602417f5ab177d04d84294da5f58d8

SHA512
1a6e759257a1b55bdadd9e7f125061741782a3d53fed4eef79dd26b6d44e0ae26446f0a37c95e2128646c7e602cfefd3979bd746391432d40fcb8c9bcd4df68f

Download Submit
\??\c:\windows\SysWOW64\windowsdriver.dll

Filesize
75.1MB

MD5
332cdbfa909ca49ca23284f96c7c6831

SHA1
7a713194006bb2bbe422d529bf9c979a75da87ca

SHA256
9fcfe44de039a8632bb61bd14f2bd215f1602417f5ab177d04d84294da5f58d8

SHA512
1a6e759257a1b55bdadd9e7f125061741782a3d53fed4eef79dd26b6d44e0ae26446f0a37c95e2128646c7e602cfefd3979bd746391432d40fcb8c9bcd4df68f

Download Submit
memory/3132-137-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/3404-138-0x0000000000000000-mapping.dmp

Download
memory/3404-140-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/4720-132-0x0000000000F90000-0x0000000000FDE000-memory.dmp

Filesize
312KB

Download
memory/4720-135-0x0000000000F90000-0x0000000000FDE000-memory.dmp

Filesize
312KB

Download
memory/5000-134-0x0000000000000000-mapping.dmp

Download