f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
20/10/2022, 16:56

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General

Target

f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe
Size

150KB
MD5

5e00ac27ea934b3c57103ad9830335d0
SHA1

312f001fb9d6a0fca61c1f4320354cad47d9fc9f
SHA256

f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456
SHA512

621b7ed86c96a60185401ba8d551e8b9864e421ec0dbb31103a7553d70fb29e8fe70c764899f0c391874375d2be5903774f959418f63fd4b5532744df8dafc87
SSDEEP

3072:Tecu88h/2y1outqzAoU+WuKurV9GqZghAs10jLAH:Tech8oy1oSqvU+WlY8p0jLAH

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
20	4316	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"	f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe

Loads dropped DLL 2 IoCs

pid	Process
2744	svchost.exe
4316	rundll32.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Uninstall alexa.exe	f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe
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	f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe
File opened for modification	C:\Windows\SysWOW64\IETimes.txt	f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe
File opened for modification	C:\Windows\SysWOW64\WindowsDriver.dll	f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.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	612	f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe
Token: SeDebugPrivilege	2744	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 612 wrote to memory of 2560	612	f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe	84
PID 612 wrote to memory of 2560	612	f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe	84
PID 612 wrote to memory of 2560	612	f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe	84
PID 2744 wrote to memory of 4316	2744	svchost.exe	89
PID 2744 wrote to memory of 4316	2744	svchost.exe	89
PID 2744 wrote to memory of 4316	2744	svchost.exe	89

C:\Users\Admin\AppData\Local\Temp\f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe
"C:\Users\Admin\AppData\Local\Temp\f9dfa92e953ced6c11fca36cf5f1ddf61cd00103eadc40fe030dd426bb11c456.exe"
1⤵
- Sets DLL path for service in the registry
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:612
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\F9DFA9~1.EXE > nul
  2⤵
  PID:2560

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:2744
- 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:4316

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
9895e0d727caf8349fd2c835cec35580

SHA1
eae5b04e7b0cdfa539122bffa7a2b41a79a48b46

SHA256
f38cb399bc6d58c0781490089f5f24d42c037d196e8411531d6d00cf5a816d90

SHA512
cc86fb4b7961e4883410d9c1e9e332831c0cbc77e3fdd74abe5da10948a64c3fc1833dca113e0ec5d1b2ac56c6eba7bae456c1724d08d9cb43bf9723ae471abf

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

Filesize
75.1MB

MD5
9895e0d727caf8349fd2c835cec35580

SHA1
eae5b04e7b0cdfa539122bffa7a2b41a79a48b46

SHA256
f38cb399bc6d58c0781490089f5f24d42c037d196e8411531d6d00cf5a816d90

SHA512
cc86fb4b7961e4883410d9c1e9e332831c0cbc77e3fdd74abe5da10948a64c3fc1833dca113e0ec5d1b2ac56c6eba7bae456c1724d08d9cb43bf9723ae471abf

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

Filesize
75.1MB

MD5
9895e0d727caf8349fd2c835cec35580

SHA1
eae5b04e7b0cdfa539122bffa7a2b41a79a48b46

SHA256
f38cb399bc6d58c0781490089f5f24d42c037d196e8411531d6d00cf5a816d90

SHA512
cc86fb4b7961e4883410d9c1e9e332831c0cbc77e3fdd74abe5da10948a64c3fc1833dca113e0ec5d1b2ac56c6eba7bae456c1724d08d9cb43bf9723ae471abf

Download Submit
memory/612-132-0x0000000000900000-0x000000000094E000-memory.dmp

Filesize
312KB

Download
memory/612-135-0x0000000000900000-0x000000000094E000-memory.dmp

Filesize
312KB

Download
memory/2744-137-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/2744-140-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download
memory/4316-141-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

Download