overlord | e2ab6240861ea9e1f148bb8a38eea4a5f17f4a9271ca67f272bae16859457f1d

Analysis

max time kernel
148s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
01/10/2026, 12:27

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General

Target
tedutil.dll
Size 104KB
Sample261001-pm2ydsxtf1
SHA256 e2ab6240861ea9e1f148bb8a38eea4a5f17f4a9271ca67f272bae16859457f1d
MD5 46f3499302ddf5ac322954f32ac256c2
SHA1 79902bce03bd8cc029d2d78c4921a90537c01193
SHA512 bfcd477370f412e89668a6be1747c1d6c4a7169d635eafa9393a2033373811ab5447219b58ea1a055495688207ef6fbf2de5e1033631d2702f3d869e69f5508a
SSDEEP 3072:GZAJH296DzRUQo+plGF9fEF0xf7CR4XO81i74x+4bSds/H4Byb8FW8TK5zzh9HIm:GKod8F017CR4XO81i74x+4bSds/H4Byt
TLSH
T111A3544565B4BCB8C526803D9213632293B23C4DC3326667BAE9DD643F97F606B1E7E0
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery overlord persistence rat

Malware Config

Signatures

Family: Overlord
Overlord is an open-source Windows RAT written in Golang.
rat overlord

Detects Overlord RAT 1 IoCs

resource	yara_rule
behavioral3/memory/5024-19-0x0000029C0A830000-0x0000029C0DBBE000-memory.dmp	family_overlord

Executes dropped EXE 1 IoCs

pid	Process
4476	ExplorerBroker.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-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate_l5MO = "C:\\Users\\Admin\\AppData\\Local\\Microsoft\\Windows\\Explorer\\thumbcache_l5MOU8sU\\ExplorerBroker.exe"	regsvr32.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
15	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3108 set thread context of 5024	3108	regsvr32.exe	89

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-1-5-21-461973139-3212354679-1508698038-1000\{8CAF88C4-DFF3-4F59-B5C8-62264114DD26}	RuntimeBroker.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3108	regsvr32.exe
3108	regsvr32.exe
3108	regsvr32.exe
3108	regsvr32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 5024	3108	regsvr32.exe	89

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\tedutil.dll
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3108
- C:\Windows\system32\RuntimeBroker.exe
  "C:\Windows\system32\RuntimeBroker.exe"
  2⤵
  - Checks processor information in registry
  - Modifies registry class
  PID:5024

C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_l5MOU8sU\ExplorerBroker.exe
C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_l5MOU8sU\ExplorerBroker.exe
1⤵
- Executes dropped EXE
PID:4476

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

Replay Monitor

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Downloads

ExplorerBroker.exe

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_l5MOU8sU\ExplorerBroker.exe
Size 52KB
SHA256 eab4d04b91b95333d9d8ddeec5efc5fbd96ae1ab6a2d53905df6d3e9674926a2
MD5 c6fa446ed75472648ab2cc9d391298aa
SHA1 5f2d2e73c88a183477abbf4fc88d23e388d9092e
SHA512 ea32d49c982195035894beb77ebfb81e830ff37d3ef08e064ad1596f389a50a1e2237b330205e3e48087503e54d1245a1c1d3e6044a1ff0f11cb16ad1302f7fe
SSDEEP 384:zIATU0Vid2R57hHZhq78sQ7yvTWp5HZ4XrTZ9FCQl7v9rA9WrHLHW:3TUNQ7Hwwn7yvTWHHyZrC47v9BL
TLSH
T17F33080E67AA34E4E5BA473444731225D771B53127218EFF68E4C17A4F26AE0DA31F4B
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/5024-19-0x0000029C0A830000-0x0000029C0DBBE000-memory.dmp

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