4dfc17406a58c6f1ce83a73ce6dd5b343d00fe77d07dfe21d28da13631bfad90

General

Target

trash.exe
Size

100KB
MD5

7f5227030be3d2ef48aa652af1ec72b0
SHA1

202e7ac1c2aaca8fbeed4ac454ca195a33c9d064
SHA256

4dfc17406a58c6f1ce83a73ce6dd5b343d00fe77d07dfe21d28da13631bfad90
SHA512

4603b758416dac60cb322aae6f3566711b6a4a9b657f6448861553b45b1c737fd3180d2b0bc169ef193a2372e89aba14a4d27a25e0a5eb440ed6c4afafe5f55c

Score

8^/10

ransomware spyware stealer

Malware Config

Signatures

Modifies extensions of user files 15 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\SuspendFormat.crw.cnxvq0	trash.exe
File opened for modification	C:\Users\Admin\Pictures\GetCheckpoint.tif.cnxvq0	trash.exe
File renamed	C:\Users\Admin\Pictures\GetCheckpoint.tif => C:\Users\Admin\Pictures\GetCheckpoint.tif.cnxvq0	trash.exe
File renamed	C:\Users\Admin\Pictures\OptimizeRegister.raw => C:\Users\Admin\Pictures\OptimizeRegister.raw.cnxvq0	trash.exe
File renamed	C:\Users\Admin\Pictures\SuspendFormat.crw => C:\Users\Admin\Pictures\SuspendFormat.crw.cnxvq0	trash.exe
File created	C:\Users\Admin\Pictures\GetCheckpoint.tif.cnxvq0	trash.exe
File opened for modification	C:\Users\Admin\Pictures\OptimizeRegister.raw.cnxvq0	trash.exe
File created	C:\Users\Admin\Pictures\PushRedo.tiff.cnxvq0	trash.exe
File renamed	C:\Users\Admin\Pictures\PushRedo.tiff => C:\Users\Admin\Pictures\PushRedo.tiff.cnxvq0	trash.exe
File created	C:\Users\Admin\Pictures\SuspendFormat.crw.cnxvq0	trash.exe
File created	C:\Users\Admin\Pictures\OptimizeRegister.raw.cnxvq0	trash.exe
File opened for modification	C:\Users\Admin\Pictures\PushRedo.tiff.cnxvq0	trash.exe
File created	C:\Users\Admin\Pictures\UnlockUnprotect.tiff.cnxvq0	trash.exe
File opened for modification	C:\Users\Admin\Pictures\UnlockUnprotect.tiff.cnxvq0	trash.exe
File renamed	C:\Users\Admin\Pictures\UnlockUnprotect.tiff => C:\Users\Admin\Pictures\UnlockUnprotect.tiff.cnxvq0	trash.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.cnxvq0	trash.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.cnxvq0	trash.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
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1724 set thread context of 1908	1724	trash.exe	26

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

System Information Discovery
T1082

Modifies registry class 11 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\cnxvq0_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\.cnxvq0	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\.cnxvq0\ = "cnxvq0_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\cnxvq0_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\cnxvq0_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\cnxvq0_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\cnxvq0_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\cnxvq0_auto_file\shell	rundll32.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1844	NOTEPAD.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1364	rundll32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: 33	932	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	932	AUDIODG.EXE
Token: 33	932	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	932	AUDIODG.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1724	trash.exe
756	AcroRd32.exe
756	AcroRd32.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1724 wrote to memory of 1908	1724	trash.exe	26
PID 1016 wrote to memory of 756	1016	rundll32.exe	32
PID 1016 wrote to memory of 756	1016	rundll32.exe	32
PID 1016 wrote to memory of 756	1016	rundll32.exe	32
PID 1016 wrote to memory of 756	1016	rundll32.exe	32
PID 1364 wrote to memory of 1552	1364	rundll32.exe	35
PID 1364 wrote to memory of 1552	1364	rundll32.exe	35
PID 1364 wrote to memory of 1552	1364	rundll32.exe	35

C:\Users\Admin\AppData\Local\Temp\trash.exe
"C:\Users\Admin\AppData\Local\Temp\trash.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\trash.exe
  C:\Users\Admin\AppData\Local\Temp\trash
  2⤵
  - Modifies extensions of user files
  - Drops startup file
  PID:1908

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.cnxvq0
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1016
- C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
  "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.cnxvq0"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:756

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.cnxvq0
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.cnxvq0
  2⤵
  PID:1552

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\WatchDisable.css.cnxvq0
1⤵
- Opens file in notepad (likely ransom note)
PID:1844

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x574
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:932

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1016-14-0x000007FEFC601000-0x000007FEFC603000-memory.dmp

Filesize
8KB

Download
memory/1068-17-0x000007FEF7D90000-0x000007FEF800A000-memory.dmp

Filesize
2.5MB

Download
memory/1724-8-0x0000000000670000-0x0000000000674000-memory.dmp

Filesize
16KB

Download
memory/1724-10-0x0000000002860000-0x0000000002864000-memory.dmp

Filesize
16KB

Download
memory/1908-12-0x0000000000020000-0x0000000000021000-memory.dmp

Filesize
4KB

Download
memory/1908-11-0x0000000000413000-0x0000000000414000-memory.dmp

Filesize
4KB

Download
memory/1908-13-0x0000000000413000-0x0000000000414000-memory.dmp

Filesize
4KB

Download
memory/1908-9-0x00000000761E1000-0x00000000761E3000-memory.dmp

Filesize
8KB

Download
memory/1908-4-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1908-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1908-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

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Analysis

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