aa3f5c9620b39ba689f58251e4c0070a7eaec732f9eb00ab9cf906c2c15e490a

Analysis

max time kernel
13s
max time network
12s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/12/2023, 10:45

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General

Target

6862f95b6c8638d93d9308a7347bfc09.dll
Size

22KB
MD5

6862f95b6c8638d93d9308a7347bfc09
SHA1

6cf59e8716e8fa69234b0c32b5f3e617922a37cc
SHA256

aa3f5c9620b39ba689f58251e4c0070a7eaec732f9eb00ab9cf906c2c15e490a
SHA512

0f1ba243a63c654d9a1af7257e0cb7967de43de4ea06e40f51b58e13060e08590e0f64ed17cff2f31eab28a63553355e43fec675376fabc1daf106fdce86aaa6
SSDEEP

192:ZTpjOHK9uwSZDqeM1p06CWFV0q6FuJs/U9A1m/c3hM+KNbcT5YmBt9JkGuBnom1g:ZNjOHKEw7N1O6X0H/PvMhMR9CHomij

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
2992	rundll32.exe

Adds Run key to start application 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\Run\system = "C:\\Windows\\system32\\system.exe"	rundll32.exe

Enumerates connected drives 3 TTPs 2 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

description	ioc	Process
File opened (read-only)	\??\D:	rundll32.exe
File opened (read-only)	\??\F:	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2992	rundll32.exe
2992	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 696 wrote to memory of 2992	696	rundll32.exe	16
PID 696 wrote to memory of 2992	696	rundll32.exe	16
PID 696 wrote to memory of 2992	696	rundll32.exe	16

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6862f95b6c8638d93d9308a7347bfc09.dll,#1
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
PID:2992

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6862f95b6c8638d93d9308a7347bfc09.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:696

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

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\46CD.tmp

Filesize
381KB

MD5
6b45ca28cac77b131dbe82f5cf49c5ee

SHA1
bcc471c0f9ae96a9ac7dfb95e72299cb31980615

SHA256
f57aedd1d90a2121dd1a962181f2dd5f04662b0c7273e60879f1a4f661c6efe7

SHA512
76a5629137254b1817f074bc53600710973f23c5f17bb6be6319fbc3e188e96c6f1a62b40c7580f1f1fb57eb8aee16182f4a9c615797dbda0a536a012e7cddd9

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