5f6aa4009a9b488a25f1b6eb3cf1bcee64c81fddde773bdd2c5f427bd3f0fb1b

Analysis

max time kernel
142s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 13:12

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General

Target

8c68b87c65f73bcea5673628650994eb.exe
Size

15KB
MD5

8c68b87c65f73bcea5673628650994eb
SHA1

0fcc3e3e506c8f3d8f9132b1fe64b30bb11f13fb
SHA256

5f6aa4009a9b488a25f1b6eb3cf1bcee64c81fddde773bdd2c5f427bd3f0fb1b
SHA512

0e902b7a6cb926b647bf74b1989bb75829f4b9ac0a99a290bbd30d30d55bb483e414059be60786f5f06ca49190381cb48b977d00c568fa974316724eb8abe24d
SSDEEP

384:q7SLy9ZFe7lqU6iBOzjao0CT/nTLuoKA69z9dI9bWY2:q7Sm8lROzLDLJkd9dAb0

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\lweurqhx.dll = "{71A78CD4-E470-4a18-8457-E0E0283DD507}"	8c68b87c65f73bcea5673628650994eb.exe

Loads dropped DLL 1 IoCs

pid	Process
4588	8c68b87c65f73bcea5673628650994eb.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\lweurqhx.tmp	8c68b87c65f73bcea5673628650994eb.exe
File created	C:\Windows\SysWOW64\lweurqhx.tmp	8c68b87c65f73bcea5673628650994eb.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{71A78CD4-E470-4a18-8457-E0E0283DD507}\InProcServer32	8c68b87c65f73bcea5673628650994eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{71A78CD4-E470-4a18-8457-E0E0283DD507}\InProcServer32\ = "C:\\Windows\\SysWow64\\lweurqhx.dll"	8c68b87c65f73bcea5673628650994eb.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{71A78CD4-E470-4a18-8457-E0E0283DD507}\InProcServer32\ThreadingModel = "Apartment"	8c68b87c65f73bcea5673628650994eb.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{71A78CD4-E470-4a18-8457-E0E0283DD507}	8c68b87c65f73bcea5673628650994eb.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4588	8c68b87c65f73bcea5673628650994eb.exe
4588	8c68b87c65f73bcea5673628650994eb.exe
4588	8c68b87c65f73bcea5673628650994eb.exe
4588	8c68b87c65f73bcea5673628650994eb.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4588	8c68b87c65f73bcea5673628650994eb.exe
4588	8c68b87c65f73bcea5673628650994eb.exe
4588	8c68b87c65f73bcea5673628650994eb.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 1832	4588	8c68b87c65f73bcea5673628650994eb.exe	92
PID 4588 wrote to memory of 1832	4588	8c68b87c65f73bcea5673628650994eb.exe	92
PID 4588 wrote to memory of 1832	4588	8c68b87c65f73bcea5673628650994eb.exe	92

C:\Users\Admin\AppData\Local\Temp\8c68b87c65f73bcea5673628650994eb.exe
"C:\Users\Admin\AppData\Local\Temp\8c68b87c65f73bcea5673628650994eb.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:4588
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\838.tmp.bat
  2⤵
  PID:1832

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\838.tmp.bat

Filesize
179B

MD5
5f61d9c2504d14815ad596cb4f73c8ca

SHA1
d10b85cdb37e345440a27d5f565ce165e8cad8f0

SHA256
830a0522037c582162f346fdc705cc5015cb01eeecac7749825f6aa07ad0942c

SHA512
3b7ca2f4a48fbff8fe51dcd99abbdd89e6ba26e23bc4d9579d6bad8ef3ee3adb3ecb9b71f3f350039b58b4b7f5b454dde099fc73631f0075c2aece54c3c72737

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

Filesize
2.5MB

MD5
2f89d95a24a606ad0459a85c28bf30a8

SHA1
2a4043c4c9efec6663305f07b05c569afc431f19

SHA256
d43104d456a3048d900b5eaa3509953beb39aeb4eead949531cfc8a471d02bf0

SHA512
15d709e8e05b72addb0e38d28b26f31954b875978df3eeadbbc43428f13fbd7253817dd773e94cfc4f258b6fb79ca0a1e26ef02fbd99fa98946f2ab7617c1bf9

Download Submit
memory/4588-6-0x0000000020000000-0x0000000020009000-memory.dmp

Filesize
36KB

Download
memory/4588-10-0x0000000020000000-0x0000000020009000-memory.dmp

Filesize
36KB

Download