donutloader | c92efb370eb4f2baa398743da50694df95eaae5c1513f2f63715eb64806e51eb

Analysis

user interaction
yes
max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
08/09/2026, 13:45

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General

Target
Tax_Notice-10.exe
Size 1.1MB
Sample260908-q2dpsacl7x
SHA256 c92efb370eb4f2baa398743da50694df95eaae5c1513f2f63715eb64806e51eb
MD5 c9aecbf4bbed5c38163f0bd15001613d
SHA1 5c875311dbc761c08dc604ef7fc13a18d56472ba
SHA512 9ec8ee624eacb142cefafdac2271e7820f0d8dd866fef23518edbc1d3c081ce2234b5ed8bc5bfc84201a4b0c5a646dcac2e2bbac735b01d1d6f3c5834528cf28
SSDEEP 24576:zGKuKkPztKt9cHPrLRAqKBAy1N1UGAmnnnFnnnZnnnGnnnsddodpbaQTIlXdodaT:zGKuKkPzgt9cHTLRAqK81kMbaQTIll
TLSH
T1DE453C1BE76245ECC56FC13883A78772A970785943347E2E1EA5DB222F50D60AF3E724
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
behavioral1/memory/824-17-0x00000186170A0000-0x000001861758C000-memory.dmp	family_donutloader

Detects Overlord RAT 2 IoCs

resource	yara_rule
behavioral1/memory/824-19-0x000001861A4C0000-0x000001861D1D7000-memory.dmp	family_overlord
behavioral1/memory/4612-31-0x000001C57CCC0000-0x000001C57F9D7000-memory.dmp	family_overlord

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-1-5-21-876885714-46325919-1482798410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate_0O12 = "C:\\Users\\Admin\\AppData\\Local\\Microsoft\\Windows\\Explorer\\thumbcache_0O12iS8c\\vlc.exe"	vlc.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
37	api.ipify.org
40	api.ipify.org

Executes dropped EXE 2 IoCs

pid	Process
4400	vlc.exe
2472	vlc.exe

Loads dropped DLL 2 IoCs

pid	Process
4400	vlc.exe
2472	vlc.exe

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-1-5-21-876885714-46325919-1482798410-1000\{747C8020-F60D-49EC-848C-2617EE584490}	RuntimeBroker.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2476	Tax_Notice-10.exe
2476	Tax_Notice-10.exe
4400	vlc.exe
4400	vlc.exe
4400	vlc.exe
4400	vlc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
824	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 4400	2476	Tax_Notice-10.exe	85
PID 4400 wrote to memory of 824	4400	vlc.exe	95
PID 4400 wrote to memory of 824	4400	vlc.exe	95
PID 2472 wrote to memory of 4612	2472	vlc.exe	98
PID 2472 wrote to memory of 4612	2472	vlc.exe	98

C:\Users\Admin\AppData\Local\Temp\Tax_Notice-10.exe
"C:\Users\Admin\AppData\Local\Temp\Tax_Notice-10.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2476
- C:\Users\Admin\AppData\Local\Temp\thumbcache_1e357c6d\vlc.exe
  "C:\Users\Admin\AppData\Local\Temp\thumbcache_1e357c6d\vlc.exe"
  2⤵
  - Adds Run key to start application
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4400
- - C:\Windows\system32\RuntimeBroker.exe
    "C:\Windows\system32\RuntimeBroker.exe"
    3⤵
    - Checks processor information in registry
    - Modifies registry class
    - Suspicious behavior: GetForegroundWindowSpam
    PID:824

C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_0O12iS8c\vlc.exe
C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_0O12iS8c\vlc.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Windows\system32\RuntimeBroker.exe
  "C:\Windows\system32\RuntimeBroker.exe"
  2⤵
  PID:4612

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

settings.dat

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_0O12iS8c\settings.dat
Size 4.9MB
SHA256 9ce4efefc4bdb9d0738e1253d56a1db61cbf8d4e960d11474a0f340fe25887d0
MD5 7b4fbe7044d5979a641ebf2ef20280a6
SHA1 7494571d802e90ac7ad99569b3fcacdf1b442487
SHA512 7731646402a48b5d6e8b72bfc591c3641eb0d41bdaec761e272cd028c22aa93bddad9384af8084caa7d1e8d02ceb804c9b949d2627b5bf8340e34f31e586ae84
SSDEEP 98304:Lh8DkgEoGYqB2b2NXjb63qNoh2SoY29d/WCEL4fiYIhPq4NZRTkR4OBOe:LqD1xvjinGJNyd+CD6YIDuIe
TLSH
T1033633403566BA2BC1EFE581A91D349A6CE44FDBAF47A7C2DC44F884061AB96C35C73C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

libvlc.dll

Path C:\Users\Admin\AppData\Local\Temp\thumbcache_1e357c6d\libvlc.dll
Size 113KB
SHA256 f0c3405b9d114c7380aed94260ddcbaf6c3587bb48c8fb05a508f6b1c96f3c84
MD5 f7c8e2d051ead5bb46f0f86555d0cee3
SHA1 a0cbea1f17c2bcbbc41eb27781dba9378572ee56
SHA512 67185088e3490c1bfe014b4f4b15fc306f1fe92962212e37a9f3b38b7027bf442ed0fbd09bd03c25a3ba02c0b9c56a5288bbc1d6a5e1c6a053755d706eb8257b
SSDEEP 3072:fbaSMKqILSdo7o+5qsTPKRpTsoAoSZys6d1ms6dt:fbaSoGTyRpTsoAoXd12dt
TLSH
T1D3B3C6036B89E048D266D63D82051B23D4F239553BA01B6E5B341FA53BF5CE63F3E4A9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

vlc.exe

Path C:\Users\Admin\AppData\Local\Temp\thumbcache_1e357c6d\vlc.exe
Size 1021KB
SHA256 bfa5740f028a8f310ca01c779bbc5f2f1b435c41539c54de592f715bb0c10389
MD5 f0a4d5c3492115bfe2f346bc7bdce396
SHA1 bfcbdc7d0cbb92b68d348090fe9f381b4358a587
SHA512 8e4b2e1852fbc821cab4a7c16675afbfa2588472faa1848600829c415bfbee7cbf4713568ba15a76916e6c761d79b0fff7c5a1ae087aabd912bb7063d38a560a
SSDEEP 24576:uGKuKkPztKt9cHPrLRAqKBAy1N1UGAmnnnFnnnZnnnGnnnsddodt:uGKuKkPzgt9cHTLRAqK81k8
TLSH
T1A9254B1BE7A345EDC56FC13487A7C772AA30B86942347E2E1D95DB221F10E609F2E724
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/824-17-0x00000186170A0000-0x000001861758C000-memory.dmp

Download

memory/824-19-0x000001861A4C0000-0x000001861D1D7000-memory.dmp

Download

memory/2472-30-0x00007FF6801D0000-0x00007FF6802D3000-memory.dmp

Download

memory/2476-5-0x00007FF6E9090000-0x00007FF6E91BA000-memory.dmp

Download

memory/4400-8-0x00007FF629380000-0x00007FF629483000-memory.dmp

Download

memory/4400-23-0x00007FF629380000-0x00007FF629483000-memory.dmp

Download

memory/4612-31-0x000001C57CCC0000-0x000001C57F9D7000-memory.dmp

Download