6d511cc2ae79502fe78a4e2a12790563b1af3743e575f1ff1a572a5f2737c292

Analysis

max time kernel
0s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
31/12/2023, 13:46

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General

Target

389516b53756da46ee90b831ba8943ba.dll
Size

164KB
MD5

389516b53756da46ee90b831ba8943ba
SHA1

0e41f0553920fda2e608523e99dfb5a76541417b
SHA256

6d511cc2ae79502fe78a4e2a12790563b1af3743e575f1ff1a572a5f2737c292
SHA512

d723c0f6792b1859a369374d4d024c463565c6c9eb40ed7476a9cdf90492e4c2114fdf5d4d0d2186756810f442daeb10d684eed30de348bd085dc71133f02237
SSDEEP

3072:TDkvq9kS+RwTK4iDY2knwnLy4egAOd1gKDanQObo3/ejtopVthOK8+ZTWsJpEzAL:TDjrKwTVi07CO4eDOd1gK+do2ZopMK82

Score

10^/10

evasion upx

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "0"	rundll32.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	rundll32.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3416-0-0x0000000010000000-0x000000001001B000-memory.dmp	upx
behavioral2/memory/3416-10-0x0000000010000000-0x000000001001B000-memory.dmp	upx

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3416	rundll32.exe
3416	rundll32.exe
3416	rundll32.exe
3416	rundll32.exe
3416	rundll32.exe
3416	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3416	rundll32.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3496	Explorer.EXE
3496	Explorer.EXE
3496	Explorer.EXE
3496	Explorer.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 3416	5088	rundll32.exe	14
PID 5088 wrote to memory of 3416	5088	rundll32.exe	14
PID 5088 wrote to memory of 3416	5088	rundll32.exe	14
PID 3416 wrote to memory of 3496	3416	rundll32.exe	53
PID 3416 wrote to memory of 4696	3416	rundll32.exe	20
PID 3416 wrote to memory of 4696	3416	rundll32.exe	20
PID 3416 wrote to memory of 4696	3416	rundll32.exe	20

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\389516b53756da46ee90b831ba8943ba.dll,#1
1⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3416
- C:\Windows\SysWOW64\explorer.exe
  explorer C:\Users\Admin\AppData
  2⤵
  PID:4696

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\389516b53756da46ee90b831ba8943ba.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5088

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
PID:5048

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:832

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:3496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3416-0-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3416-9-0x000000007F800000-0x000000007F801000-memory.dmp

Filesize
4KB

Download
memory/3416-10-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3416-8-0x00000000775D2000-0x00000000775D3000-memory.dmp

Filesize
4KB

Download
memory/3416-7-0x00000000004F0000-0x0000000000511000-memory.dmp

Filesize
132KB

Download
memory/3416-6-0x00000000004F0000-0x0000000000511000-memory.dmp

Filesize
132KB

Download
memory/3416-4-0x00000000004F0000-0x0000000000511000-memory.dmp

Filesize
132KB

Download