donutloader | c5b64e6561add22f0d4d7d983427d4a0354efeca8f7c5949881153919ee81633

Analysis

user interaction
yes
max time kernel
18s
max time network
22s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-es
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-eslocale:es-esos:windows11-ltsc_2024-x64systemwindows
submitted
11/11/2026, 00:45

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General

Target
93ajv.exe
Size 7.0MB
Sample261111-a4k9msch93
SHA256 c5b64e6561add22f0d4d7d983427d4a0354efeca8f7c5949881153919ee81633
MD5 e712371fd1f051cdb3f3efb630852156
SHA1 6fed342d2b85cfd05168e81854b2c9b983b28207
SHA512 f29758d19a7e52988a2cd13160800992c4849e20d7c1cc4f6401a97da5ab3a6d6879b77d0ffe61b19dc216281c0bdcbf8d68393cabcb871dd482d988fa33e47e
SSDEEP 98304:E6W1Ac2kfvGIcJXossij4ZajoRNxN0wGQ3A83ciYtksL7fAf4TdvmwKjed8DMnwB:EzYkfOIcJosdTTNUNvl
TLSH
T192766C07ECA155E5C1AAE1318A629252BF71BC484B3123D33BA0F7682F77BD06DB9750
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

ja1 discovery donutloader stealc loader persistence stealer

Malware Config

Extracted

Family

stealc

Botnet

http://87.120.104.209

rc4.traffic_key

rc4.plain

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: Stealc
Stealc is an infostealer written in C++.
stealer stealc

Detects DonutLoader 1 IoCs

loader

resource	yara_rule
behavioral1/memory/4136-4-0x000001C8EFD80000-0x000001C8EFE20000-memory.dmp	family_donutloader

Executes dropped EXE 1 IoCs

pid	Process
4136	fy7ai85lb5.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\fy7ai85lb5 = "C:\\Users\\Admin\\AppData\\Roaming\\rtgftjchzvg0\\fy7ai85lb5.exe"	93ajv.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	fy7ai85lb5.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	fy7ai85lb5.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 4136	2288	93ajv.exe	88

C:\Users\Admin\AppData\Local\Temp\93ajv.exe
"C:\Users\Admin\AppData\Local\Temp\93ajv.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Users\Admin\AppData\Roaming\rtgftjchzvg0\fy7ai85lb5.exe
  C:\Users\Admin\AppData\Roaming\rtgftjchzvg0\fy7ai85lb5.exe
  2⤵
  - Executes dropped EXE
  - Reads the TCP/IP host and domain name from the registry
  PID:4136

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {24AC8F2B-4D4A-4C17-9607-6A4B14068F97} -Embedding
1⤵
PID:4140

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:2656

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4860

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

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

fy7ai85lb5.exe

Path C:\Users\Admin\AppData\Roaming\rtgftjchzvg0\fy7ai85lb5.exe
Size 7.0MB
SHA256 c5b64e6561add22f0d4d7d983427d4a0354efeca8f7c5949881153919ee81633
MD5 e712371fd1f051cdb3f3efb630852156
SHA1 6fed342d2b85cfd05168e81854b2c9b983b28207
SHA512 f29758d19a7e52988a2cd13160800992c4849e20d7c1cc4f6401a97da5ab3a6d6879b77d0ffe61b19dc216281c0bdcbf8d68393cabcb871dd482d988fa33e47e
SSDEEP 98304:E6W1Ac2kfvGIcJXossij4ZajoRNxN0wGQ3A83ciYtksL7fAf4TdvmwKjed8DMnwB:EzYkfOIcJosdTTNUNvl
TLSH
T192766C07ECA155E5C1AAE1318A629252BF71BC484B3123D33BA0F7682F77BD06DB9750
MD5 SHA1 SHA512 SSDEEP TLSH

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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