33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95

General

Target

33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe
Size

405KB
MD5

41bf96d64c8000eaedadf0f9615e6867
SHA1

944c8a73c94f9d622c660890b9d0d42edf580608
SHA256

33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95
SHA512

76881713e3db7523b99c5e680d2c91ac8da94dc5c62923b07647cbb9c23405764290c72c0ad5861a7150810437793c3319e5d170059149cb34844e309267f8b3
SSDEEP

6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 10 IoCs

Processes:

rundll32.exe

flow	pid	process
3	2572	rundll32.exe
5	2572	rundll32.exe
8	2572	rundll32.exe
9	2572	rundll32.exe
10	2572	rundll32.exe
13	2572	rundll32.exe
14	2572	rundll32.exe
15	2572	rundll32.exe
17	2572	rundll32.exe
18	2572	rundll32.exe

Deletes itself 1 IoCs

Processes:

pbztam.exe

pid process

2472 pbztam.exe
Executes dropped EXE 1 IoCs

Processes:

pbztam.exe

pid process

2472 pbztam.exe
Loads dropped DLL 6 IoCs

Processes:

cmd.exerundll32.exe

pid process

2840 cmd.exe
2840 cmd.exe
2572 rundll32.exe
2572 rundll32.exe
2572 rundll32.exe
2572 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

pid	process
2472	pbztam.exe

pid	process
2472	pbztam.exe

pid	process
2840	cmd.exe
2840	cmd.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\fmjmv\\exsuz.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

Processes:

rundll32.exe

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

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 rundll32.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

2572 rundll32.exe
Drops file in Program Files directory 2 IoCs

Processes:

pbztam.exe

description ioc process

File opened for modification \??\c:\Program Files\fmjmv pbztam.exe
File created \??\c:\Program Files\fmjmv\exsuz.dll pbztam.exe

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

description	ioc	process
File opened for modification	\??\c:\Program Files\fmjmv	pbztam.exe
File created	\??\c:\Program Files\fmjmv\exsuz.dll	pbztam.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

Processes:

rundll32.exe

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

Processes:

PING.EXE

pid process

2996 PING.EXE

pid	process
2996	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

rundll32.exe

pid	process
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe
2572	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 2572 rundll32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exepbztam.exe

pid process

2648 33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe
2472 pbztam.exe

description	pid	process
Token: SeDebugPrivilege	2572	rundll32.exe

pid	process
2648	33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe
2472	pbztam.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.execmd.exepbztam.exe

description	pid	process	target process
PID 2648 wrote to memory of 2840	2648	33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe	cmd.exe
PID 2648 wrote to memory of 2840	2648	33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe	cmd.exe
PID 2648 wrote to memory of 2840	2648	33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe	cmd.exe
PID 2648 wrote to memory of 2840	2648	33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe	cmd.exe
PID 2840 wrote to memory of 2996	2840	cmd.exe	PING.EXE
PID 2840 wrote to memory of 2996	2840	cmd.exe	PING.EXE
PID 2840 wrote to memory of 2996	2840	cmd.exe	PING.EXE
PID 2840 wrote to memory of 2996	2840	cmd.exe	PING.EXE
PID 2840 wrote to memory of 2472	2840	cmd.exe	pbztam.exe
PID 2840 wrote to memory of 2472	2840	cmd.exe	pbztam.exe
PID 2840 wrote to memory of 2472	2840	cmd.exe	pbztam.exe
PID 2840 wrote to memory of 2472	2840	cmd.exe	pbztam.exe
PID 2472 wrote to memory of 2572	2472	pbztam.exe	rundll32.exe
PID 2472 wrote to memory of 2572	2472	pbztam.exe	rundll32.exe
PID 2472 wrote to memory of 2572	2472	pbztam.exe	rundll32.exe
PID 2472 wrote to memory of 2572	2472	pbztam.exe	rundll32.exe
PID 2472 wrote to memory of 2572	2472	pbztam.exe	rundll32.exe
PID 2472 wrote to memory of 2572	2472	pbztam.exe	rundll32.exe
PID 2472 wrote to memory of 2572	2472	pbztam.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe
"C:\Users\Admin\AppData\Local\Temp\33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\pbztam.exe "C:\Users\Admin\AppData\Local\Temp\33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2840
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:2996
- - C:\Users\Admin\AppData\Local\Temp\pbztam.exe
    C:\Users\Admin\AppData\Local\Temp\\pbztam.exe "C:\Users\Admin\AppData\Local\Temp\33265ae47dda3206a46a0ae68fd43277ca942a424049a0c0ac8b8a05702aed95.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2472
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\fmjmv\exsuz.dll",Verify C:\Users\Admin\AppData\Local\Temp\pbztam.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:2572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Program Files\fmjmv\exsuz.dll

Filesize
228KB

MD5
04066575733a530594bc8692c4e13363

SHA1
1052e87b6595027080de30f8cf8a84ef928ba18d

SHA256
0a1ee91c74efa4f64b1d1e9c61259c957ceefdbce835008a6cc595bab3825466

SHA512
c94e9a2163250153a5018c75991092ab9e5ccc51c9b1968860e33cdf87c297f8a97a0a69d7b1fa48a6d08182d4cd1187bab08c12bfdbf4c49a7bb4ea0fcfaaa6

Download Submit
\Users\Admin\AppData\Local\Temp\pbztam.exe

Filesize
406KB

MD5
69bc1fed4dc19ea608ffe65962a166dd

SHA1
84ae4ab0b661d69702ead65d3fee2df18cff92ac

SHA256
0377cbbd45484c00355b0d933c53c2b75c0bcd99d1f2a37bb496f199308da6f9

SHA512
22492138eae324e247e6d550298b52f8dce4aca9ec57d31a666933188a7c5a9c8ab39edd9fae7ba05ac0e244aa1839fcf809cf026a902750bd3bbac2313939b5

Download Submit
memory/2472-11-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2472-9-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2572-19-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2572-20-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2572-18-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2572-21-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2572-17-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2572-23-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2648-0-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2648-2-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2840-8-0x0000000001F80000-0x0000000001FE4000-memory.dmp

Filesize
400KB

Download
memory/2840-6-0x0000000001F80000-0x0000000001FE4000-memory.dmp

Filesize
400KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads