9ad8c1076f01d08ecb43551e1deb7661c9835504ddd3dba2b4715c43b3b5a011

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28-01-2024 12:35

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General

Target

7d2564fd91b3d55cc05444e5ecd130b9.exe
Size

14KB
MD5

7d2564fd91b3d55cc05444e5ecd130b9
SHA1

15e8b093cc16e88896075d53f1ffa5f6471dde98
SHA256

9ad8c1076f01d08ecb43551e1deb7661c9835504ddd3dba2b4715c43b3b5a011
SHA512

9b2050d9e750ec7e2117137520cf9ba5d0a920a54a2a256f446cb34a3f9e2dd7c0d9b711bba78b534579d72835b490a61bd33672ddf3c37f86a2ac2533d02556
SSDEEP

384:5iSFwTQthMrlZzyhWmB8dsxwf4XfSLNlZ7:5RF9ilZ2PB8dQw22b

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 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\ShellServiceObjectDelayLoad\catsrvwl.dll = "{AF976DCD-754F-4ac2-BE49-951DC7AA57D2}"	7d2564fd91b3d55cc05444e5ecd130b9.exe

Loads dropped DLL 1 IoCs

pid	Process
5024	7d2564fd91b3d55cc05444e5ecd130b9.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\catsrvwl.tmp	7d2564fd91b3d55cc05444e5ecd130b9.exe
File opened for modification	C:\Windows\SysWOW64\catsrvwl.tmp	7d2564fd91b3d55cc05444e5ecd130b9.exe
File opened for modification	C:\Windows\SysWOW64\catsrvwl.nls	7d2564fd91b3d55cc05444e5ecd130b9.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF976DCD-754F-4ac2-BE49-951DC7AA57D2}	7d2564fd91b3d55cc05444e5ecd130b9.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF976DCD-754F-4ac2-BE49-951DC7AA57D2}\InProcServer32	7d2564fd91b3d55cc05444e5ecd130b9.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF976DCD-754F-4ac2-BE49-951DC7AA57D2}\InProcServer32\ = "C:\\Windows\\SysWow64\\catsrvwl.dll"	7d2564fd91b3d55cc05444e5ecd130b9.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{AF976DCD-754F-4ac2-BE49-951DC7AA57D2}\InProcServer32\ThreadingModel = "Apartment"	7d2564fd91b3d55cc05444e5ecd130b9.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5024	7d2564fd91b3d55cc05444e5ecd130b9.exe
5024	7d2564fd91b3d55cc05444e5ecd130b9.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
5024	7d2564fd91b3d55cc05444e5ecd130b9.exe
5024	7d2564fd91b3d55cc05444e5ecd130b9.exe
5024	7d2564fd91b3d55cc05444e5ecd130b9.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5024 wrote to memory of 752	5024	7d2564fd91b3d55cc05444e5ecd130b9.exe	94
PID 5024 wrote to memory of 752	5024	7d2564fd91b3d55cc05444e5ecd130b9.exe	94
PID 5024 wrote to memory of 752	5024	7d2564fd91b3d55cc05444e5ecd130b9.exe	94

C:\Users\Admin\AppData\Local\Temp\7d2564fd91b3d55cc05444e5ecd130b9.exe
"C:\Users\Admin\AppData\Local\Temp\7d2564fd91b3d55cc05444e5ecd130b9.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5024
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\E196.tmp.bat
  2⤵
  PID:752

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\E196.tmp.bat

Filesize
179B

MD5
1c205466e4a81981e487ad70fe9b0aea

SHA1
64993681e5fdba9ae3b0a1bbb3ae995c038b9dc2

SHA256
165a67a042fb550c711582dadf74d6212adcba26d131c6734c0b48997a089765

SHA512
404932a85f33463610f1d423ea8feee9d73b1da2e0b892f2196450bc0dcba1140c54157a45eb9f5206d48637bdf9c6933c39fa252713c37f039e9820ee759d02

Download Submit
C:\Windows\SysWOW64\catsrvwl.tmp

Filesize
955KB

MD5
bd96454d944af64b27bac3c551bb4a47

SHA1
1bbc0c8f4480f570d34da2b840543dfeeca169d5

SHA256
edd97e3177caf66a944e46b2af920a2b12dfb68e24d212c833376d35be9dd884

SHA512
a57885ecb0494195dd4aefbdf51827e6bdf4079ad39774013731953f23aa0c6b8561f48672b34ebcfe0c466f14cdf5b7d272216cf6c830ff4cd255e2199be603

Download Submit
memory/5024-17-0x0000000020000000-0x000000002006C000-memory.dmp

Filesize
432KB

Download
memory/5024-21-0x0000000020000000-0x000000002006C000-memory.dmp

Filesize
432KB

Download