donutloader | 81f1a6fe9b5ff6056acf13a2e426a284ce6f54cd1d2b6f4a1a3b498f3bf70c38

Analysis

max time kernel
600s
max time network
604s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-ja
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-jalocale:ja-jpos:windows11-ltsc_2024-x64systemwindows
submitted
10/09/2026, 10:09

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General

Target
badata_x64.dll
Size 80KB
Sample260910-l66txa1frb
SHA256 81f1a6fe9b5ff6056acf13a2e426a284ce6f54cd1d2b6f4a1a3b498f3bf70c38
MD5 3bf2508dad1aefe47f17d591f033ce98
SHA1 6de3969ef4d25033c7a5d13fe418b6e4a3bbc2a1
SHA512 718b18abf00a12eb6fd680895ad42a12e628bc357ad90bd1bdf51ca17f46c0e3f6ed0a27fbce13deb174d1c3b25c99b91865afc615f68c4b5b17c7689ffb163a
SSDEEP 768:XEpR4Rh+yeZkP3Mz10iSCRJAw2sePVSZDVrt0HBTFBN5uhrbwoofgZ/4cfTbqC:WCh+yecYSCRJAw2set8qNEZbS0WC
TLSH
T11C83A72263A5345DC766D23E01065733D6F13CAA3710127A0BB8AE612F75E963F3E6D8
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery donutloader overlord loader persistence rat

Malware Config

Signatures

Family: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
loader donutloader
Family: Overlord
Overlord is an open-source Windows RAT written in Golang.
rat overlord

Detects DonutLoader 1 IoCs

loader

resource	yara_rule
behavioral2/memory/5704-6-0x000002594C230000-0x000002594C951000-memory.dmp	family_donutloader

Detects Overlord RAT 1 IoCs

resource	yara_rule
behavioral2/memory/5704-8-0x0000025950DA0000-0x0000025954111000-memory.dmp	family_overlord

Badlisted process makes network request 6 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
8	4312	rundll32.exe
9	4312	rundll32.exe
10	4312	rundll32.exe
11	4312	rundll32.exe
13	4312	rundll32.exe
15	4312	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
3544	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-1-5-21-4046655672-1449839301-2197395821-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate_e1bU = "C:\\Users\\Admin\\AppData\\Local\\Microsoft\\Windows\\Explorer\\thumbcache_e1bUBEjc\\rundll32.exe"	rundll32.exe

Looks up external IP address via web service 1 TTPs 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

discovery

Internet Connection Discovery

T1016.001

flow	ioc
1	api.ipify.org
22	api.ipify.org

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RuntimeBroker.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RuntimeBroker.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-4046655672-1449839301-2197395821-1000\{5F869E7C-B050-4E85-B854-0891E25B63E3}	RuntimeBroker.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4312	rundll32.exe
4312	rundll32.exe
4312	rundll32.exe
4312	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4312 wrote to memory of 5704	4312	rundll32.exe	90
PID 4312 wrote to memory of 5704	4312	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\badata_x64.dll,#1
1⤵
- Badlisted process makes network request
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4312
- C:\Windows\system32\RuntimeBroker.exe
  "C:\Windows\system32\RuntimeBroker.exe"
  2⤵
  - Checks processor information in registry
  - Modifies registry class
  PID:5704

C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_e1bUBEjc\rundll32.exe
C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_e1bUBEjc\rundll32.exe
1⤵
- Executes dropped EXE
PID:3544

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:4620

C:\Windows\System32\SecurityHealthHost.exe
\\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
1⤵
PID:5848

Network

MITRE ATT&CK Enterprise v16

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

Query Registry

T1012

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

rundll32.exe

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_e1bUBEjc\rundll32.exe
Size 88KB
SHA256 4b84dc6750937eb47b19cde0d23debd4d2f2211300171b36d13ef5ad11dd60f9
MD5 025b13bf5652712d9b596e6766a9c386
SHA1 def4011b5536983285472ba75c22c6a2410edf6a
SHA512 f9983b897ef7ecbeb6cbfe599b24f5aa8651058d2e3313534a2a5e076f93fc3354784c05260b42fa828e48a55b5c005bfaa9db4e387351bf2e665ea0245c3a1e
SSDEEP 1536:7i3jG+UJuhM2HLJPl1M8CFYNMjYrZ3bXWgmqR9jR:KkuB5GFYNME3C9KR
TLSH
T11993185E72A830E5E9369139C4A24605E3B1B03563135BFF06E0C2BD5F23AE5AD39F91
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5704-6-0x000002594C230000-0x000002594C951000-memory.dmp

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memory/5704-8-0x0000025950DA0000-0x0000025954111000-memory.dmp

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memory/5704-10-0x000002597B9A0000-0x000002597C020000-memory.dmp

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