4017b39473bdba37a135f2cf0df5c11b5d854b6bdf050c18b00e20b40ed4050d

Analysis

max time kernel
152s
max time network
158s
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, 09:37

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General

Target

14add1793d0b8c936c544cc8eca3f3e9.exe
Size

49KB
MD5

14add1793d0b8c936c544cc8eca3f3e9
SHA1

c92ff3de4ecc8feab52735e4f794aba8415ad667
SHA256

4017b39473bdba37a135f2cf0df5c11b5d854b6bdf050c18b00e20b40ed4050d
SHA512

0a456ae5574dbbc1503925a9167239964a8f34daac27bc3d475a1dc16d9555a71596f3964c2d815477e4f273a1023097e9aea189e0e426572e292dca251a45c9
SSDEEP

768:RM6vXHIn3W6z2SXibYPIKLiQZXVHjVRyYLv+OJxy8XBb2ffxUTQKwyIVOrpJR:RMUonmaXi/EZX9yYLxvxksyYpJR

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
4396	14add1793d0b8c936c544cc8eca3f3e9.exe
1216	rundll32.exe

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\MSServer = "rundll32.exe C:\\Windows\\system32\\khfFXool.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\khfFXool.dll	14add1793d0b8c936c544cc8eca3f3e9.exe
File created	C:\Windows\SysWOW64\khfFXool.dll	14add1793d0b8c936c544cc8eca3f3e9.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32\ = "C:\\Windows\\SysWow64\\khfFXool.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6D794CB4-C7CD-4c6f-BFDC-9B77AFBDC02C}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4396	14add1793d0b8c936c544cc8eca3f3e9.exe
4396	14add1793d0b8c936c544cc8eca3f3e9.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe
1216	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4396	14add1793d0b8c936c544cc8eca3f3e9.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4396	14add1793d0b8c936c544cc8eca3f3e9.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4396 wrote to memory of 624	4396	14add1793d0b8c936c544cc8eca3f3e9.exe	86
PID 4396 wrote to memory of 1216	4396	14add1793d0b8c936c544cc8eca3f3e9.exe	100
PID 4396 wrote to memory of 1216	4396	14add1793d0b8c936c544cc8eca3f3e9.exe	100
PID 4396 wrote to memory of 1216	4396	14add1793d0b8c936c544cc8eca3f3e9.exe	100
PID 4396 wrote to memory of 1556	4396	14add1793d0b8c936c544cc8eca3f3e9.exe	101
PID 4396 wrote to memory of 1556	4396	14add1793d0b8c936c544cc8eca3f3e9.exe	101
PID 4396 wrote to memory of 1556	4396	14add1793d0b8c936c544cc8eca3f3e9.exe	101

C:\Users\Admin\AppData\Local\Temp\14add1793d0b8c936c544cc8eca3f3e9.exe
"C:\Users\Admin\AppData\Local\Temp\14add1793d0b8c936c544cc8eca3f3e9.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4396
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\khfFXool.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:1216
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\efcCsqoN.bat "C:\Users\Admin\AppData\Local\Temp\14add1793d0b8c936c544cc8eca3f3e9.exe"
  2⤵
  PID:1556

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:624

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\efcCsqoN.bat

Filesize
63B

MD5
e9d6fa24f96424f1573cd4aa322f1d79

SHA1
9af9867631fd2ec194f324678e1b8b0792763ad5

SHA256
33a07f0bd4ae9dec465f2a01902c76b38792c65a84c4db902285591f056a3756

SHA512
6fe5aa4c316cb6dec5ed209b2e452d8d943b6e8c494ce9d705ce5b2d263a1496f2046c635a62adaf6d7f8484ca7c192e68f3d3402c2f77f06b8283c35e1c6083

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

Filesize
36KB

MD5
d47a1243939e8609b970d35de9b5aeeb

SHA1
efbdf4a097b16313f48ad9b100e6d55fe5cc0f00

SHA256
05f3606fca887e6979bda464a60be2068b850e2c7231b7454a80d1d3d299ab48

SHA512
33f21a51c914444083a4acbe1806d5c73860f5c1c2398b0d21a0393194999e10d83343d4fe55525654a218bd5bd01b6d3a096ea1d680fe456432ca8c86117f6d

Download Submit
memory/1216-25-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download
memory/1216-26-0x0000000000DC0000-0x0000000000DC5000-memory.dmp

Filesize
20KB

Download
memory/1216-27-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download
memory/1216-28-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download
memory/4396-2-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4396-9-0x0000000002350000-0x0000000002355000-memory.dmp

Filesize
20KB

Download
memory/4396-10-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download
memory/4396-8-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download
memory/4396-0-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4396-13-0x00000000005A0000-0x00000000005A5000-memory.dmp

Filesize
20KB

Download
memory/4396-16-0x0000000002350000-0x0000000002355000-memory.dmp

Filesize
20KB

Download
memory/4396-1-0x00000000005A0000-0x00000000005A5000-memory.dmp

Filesize
20KB

Download