d8219a964917725a1f156014bf06003bcf52ecf79dd0bb2c54840a162a0ed520

Analysis

max time kernel
45s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
10/01/2024, 16:12

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General

Target

d8219a964917725a1f156014bf06003bcf52ecf79dd0bb2c54840a162a0ed520.dll
Size

240KB
MD5

174535f3e68b60c23c7937daec38a9fb
SHA1

ef35037f1a0de73467f492520961be95df4ca203
SHA256

d8219a964917725a1f156014bf06003bcf52ecf79dd0bb2c54840a162a0ed520
SHA512

9d45e66018d3889d118dee520763f7105274cb71d6fbdb1e3b01223a947a88df0d15fb1950ea7a0c43d6f3ad2f08ae009c2785076a1099facfcac5b526aad9fe
SSDEEP

6144:65r3lV6n42+3WSKhxD8RVo2rcaGKNqAwyotp2r:6C+3xWDY9IpKNTwyog

Score

8^/10

bootkit persistence

Malware Config

Signatures

Blocklisted process makes network request 3 IoCs

flow	pid	Process
3	2076	rundll32.exe
5	2076	rundll32.exe
6	2076	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\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\Platform = "C:\\Windows\\SysWOW64\\rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\d8219a964917725a1f156014bf06003bcf52ecf79dd0bb2c54840a162a0ed520.dll\",Erase"	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)	\??\b:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2076	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 2076	1680	rundll32.exe	16
PID 1680 wrote to memory of 2076	1680	rundll32.exe	16
PID 1680 wrote to memory of 2076	1680	rundll32.exe	16
PID 1680 wrote to memory of 2076	1680	rundll32.exe	16
PID 1680 wrote to memory of 2076	1680	rundll32.exe	16
PID 1680 wrote to memory of 2076	1680	rundll32.exe	16
PID 1680 wrote to memory of 2076	1680	rundll32.exe	16

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d8219a964917725a1f156014bf06003bcf52ecf79dd0bb2c54840a162a0ed520.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d8219a964917725a1f156014bf06003bcf52ecf79dd0bb2c54840a162a0ed520.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Adds Run key to start application
  - Enumerates connected drives
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of AdjustPrivilegeToken
  PID:2076

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

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2076-0-0x0000000010000000-0x000000001008E000-memory.dmp

Filesize
568KB

Download
memory/2076-2-0x0000000010000000-0x000000001008E000-memory.dmp

Filesize
568KB

Download
memory/2076-1-0x0000000010000000-0x000000001008E000-memory.dmp

Filesize
568KB

Download
memory/2076-5-0x0000000010000000-0x000000001008E000-memory.dmp

Filesize
568KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads