0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2024, 20:29

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General

Target

0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28.exe
Size

407KB
MD5

5e9f41310effb06dd2a3532d66fd2cdf
SHA1

79736e3f664930447f20f14a9b3b328ed761dca9
SHA256

0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28
SHA512

7fae48ef836e8785ddbb8a5f7a7a3af73c178951b9c6638005440482680458652b96b3b89bb636ac09c30efab1ffc8db31615f575e9e96f67265a1bb875b6034
SSDEEP

6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4v:gtRfJcNYFNm8UhlZGsev

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
3	1844	rundll32.exe
10	1844	rundll32.exe
11	1844	rundll32.exe
12	1844	rundll32.exe
18	1844	rundll32.exe
19	1844	rundll32.exe
20	1844	rundll32.exe
21	1844	rundll32.exe

Deletes itself 1 IoCs

pid	Process
668	rcyia.exe

Executes dropped EXE 1 IoCs

pid	Process
668	rcyia.exe

Loads dropped DLL 1 IoCs

pid	Process
1844	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\xzfijq\\uifaz.dll\",Verify"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1844	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\xzfijq	rcyia.exe
File created	\??\c:\Program Files\xzfijq\uifaz.dll	rcyia.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3088	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe
1844	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1844	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1628	0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28.exe
668	rcyia.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 3872	1628	0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28.exe	80
PID 1628 wrote to memory of 3872	1628	0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28.exe	80
PID 1628 wrote to memory of 3872	1628	0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28.exe	80
PID 3872 wrote to memory of 3088	3872	cmd.exe	82
PID 3872 wrote to memory of 3088	3872	cmd.exe	82
PID 3872 wrote to memory of 3088	3872	cmd.exe	82
PID 3872 wrote to memory of 668	3872	cmd.exe	83
PID 3872 wrote to memory of 668	3872	cmd.exe	83
PID 3872 wrote to memory of 668	3872	cmd.exe	83
PID 668 wrote to memory of 1844	668	rcyia.exe	84
PID 668 wrote to memory of 1844	668	rcyia.exe	84
PID 668 wrote to memory of 1844	668	rcyia.exe	84

C:\Users\Admin\AppData\Local\Temp\0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28.exe
"C:\Users\Admin\AppData\Local\Temp\0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\rcyia.exe "C:\Users\Admin\AppData\Local\Temp\0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3872
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:3088
- - C:\Users\Admin\AppData\Local\Temp\rcyia.exe
    C:\Users\Admin\AppData\Local\Temp\\rcyia.exe "C:\Users\Admin\AppData\Local\Temp\0c9907387700a1b92bea706727f973cab6ac5666a0457d30407c93b8ff76be28.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:668
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\xzfijq\uifaz.dll",Verify C:\Users\Admin\AppData\Local\Temp\rcyia.exe
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1844

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

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\rcyia.exe

Filesize
408KB

MD5
c796a173316801e58164d5024e47f9ea

SHA1
90e2b545ddd08e127eba758d417b8b11fb247a27

SHA256
5a4bcd4b4a7202a0341731ddc37d4bc116854ff6f39b509862269756e63e26f3

SHA512
9451f3a1f03cc3b2e7256633365209d226c980df94c997ec60bf323d8efe43995c34302954e0fcfa67ca11334662b9b89d4cb623c4aeb527336ac204ba5e0a01

Download Submit
\??\c:\Program Files\xzfijq\uifaz.dll

Filesize
228KB

MD5
139d8004c54f10b3d6eb9db621844525

SHA1
b627387282c7573ad991ae124598e419ff7eac42

SHA256
aacf135d0b8e62bd7c1c09238668fbbdc660a6ff10842a92c266a8fdd9f94cf6

SHA512
c427ae9f207f8e5625251aa993d8ec0c1a7482df36f6eb221fa4ec43c9fbf1ed12ed572b8ca0fac840b846617445f0ab9c68b45d566f2752bcbdb78b9a34d60a

Download Submit
memory/668-7-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1628-0-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1628-2-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1844-10-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/1844-11-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/1844-13-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download