overlord | e2ab6240861ea9e1f148bb8a38eea4a5f17f4a9271ca67f272bae16859457f1d

Analysis

max time kernel
149s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-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
behavioral2/memory/4100-19-0x000001C42CE90000-0x000001C43021E000-memory.dmp	family_overlord

Executes dropped EXE 1 IoCs

pid	Process
864	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-1-5-21-2091445952-3649787497-104050984-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate_j1br = "C:\\Users\\Admin\\AppData\\Local\\Microsoft\\Windows\\Explorer\\thumbcache_j1braoVu\\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
49	api.ipify.org
50	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2076 set thread context of 4100	2076	regsvr32.exe	106

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 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-2091445952-3649787497-104050984-1000\{4F53E3D3-A5F6-40DB-BBC3-5B220CD86555}	RuntimeBroker.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-2091445952-3649787497-104050984-1000\{53D6FF79-EF78-4413-881D-A9DC9C211B8F}	RuntimeBroker.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2076	regsvr32.exe
2076	regsvr32.exe
2076	regsvr32.exe
2076	regsvr32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 4100	2076	regsvr32.exe	106

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:2076
- C:\Windows\system32\RuntimeBroker.exe
  "C:\Windows\system32\RuntimeBroker.exe"
  2⤵
  - Checks processor information in registry
  - Modifies registry class
  PID:4100

C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_j1braoVu\ExplorerBroker.exe
C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_j1braoVu\ExplorerBroker.exe
1⤵
- Executes dropped EXE
PID:864

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_j1braoVu\ExplorerBroker.exe
Size 24KB
SHA256 022cb167a29a32dae848be91aef721c74f1975af151807dafcc5ed832db246b7
MD5 b0c2fa35d14a9fad919e99d9d75e1b9e
SHA1 8d7c2fd354363daee63e8f591ec52fa5d0e23f6f
SHA512 a6155e42b605425914d1bf745d9b2b5ed57976e161384731c6821a1f8fa2bc3207a863ae45d6ad371ac82733b72bb024204498baa4fb38ad46c6d7bc52e5a022
SSDEEP 384:n5Y3wBQ8l/m60z+G7XU9I6ExBOMDl16AvcX9dp/Ql7YQCrA2WrcLHW:n5Yg3l/mTRXU9FeGpX9dp/47tCnL
TLSH
T1C4B21A0897EA2499E5BA973998F31225D771353117014FFF39E4823A0F22BD19E36F1A
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4100-19-0x000001C42CE90000-0x000001C43021E000-memory.dmp

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