f85a2207c80028a4b733948c305170fbe0365fa2ef00f3c9fd9379166fcafeaf

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
01/06/2026, 23:20

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General

Target
f85a2207c80028a4b733948c305170fbe0365fa2ef00f3c9fd9379166fcafeaf.exe
Size 316KB
Sample260601-3blc6aat9m
SHA256 f85a2207c80028a4b733948c305170fbe0365fa2ef00f3c9fd9379166fcafeaf
MD5 ad86a52dbffad1bf959b8c340f185850
SHA1 08ded92428f9e1c026b3f6e68b37e7c088ac173b
SHA512 f59ebeef93b2451425a648f4b23b76bc577b37f8e47b564aff7776a836a6b64a5faf793d5a52045e3687489ddae01241efcea6598601a138a9e3997feca13b99
SSDEEP 6144:/Q8OyYvc36AVuc7DQd/5zlgBR4JDRyepbSYvrQc:/j16Qu15yBRCDoGvrQc
TLSH
T159648D5AF3A814F9F977923CC8529607E772BC160760D78F27A0466A3F236A09D3E711
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
3336	apprt528a.exe
892	apprt528a.exe
4300	svc528a.exe
5068	svc528a.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2654269261-3199571979-4291878722-1000\Software\Microsoft\Windows\CurrentVersion\Run\AppRt528a = "C:\\Users\\Admin\\AppData\\Local\\AppRt528a\\apprt528a.exe"	f85a2207c80028a4b733948c305170fbe0365fa2ef00f3c9fd9379166fcafeaf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2654269261-3199571979-4291878722-1000\Software\Microsoft\Windows\CurrentVersion\Run\AppSvc528a = "C:\\Users\\Admin\\AppData\\Local\\Programs\\528a\\svc528a.exe"	apprt528a.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2576	f85a2207c80028a4b733948c305170fbe0365fa2ef00f3c9fd9379166fcafeaf.exe
2576	f85a2207c80028a4b733948c305170fbe0365fa2ef00f3c9fd9379166fcafeaf.exe
3336	apprt528a.exe
3336	apprt528a.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2576 wrote to memory of 3336	2576	f85a2207c80028a4b733948c305170fbe0365fa2ef00f3c9fd9379166fcafeaf.exe	81
PID 3336 wrote to memory of 4300	3336	apprt528a.exe	84

C:\Users\Admin\AppData\Local\Temp\f85a2207c80028a4b733948c305170fbe0365fa2ef00f3c9fd9379166fcafeaf.exe
"C:\Users\Admin\AppData\Local\Temp\f85a2207c80028a4b733948c305170fbe0365fa2ef00f3c9fd9379166fcafeaf.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2576
- C:\Users\Admin\AppData\Local\AppRt528a\apprt528a.exe
  "C:\Users\Admin\AppData\Local\AppRt528a\apprt528a.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3336
- - C:\Users\Admin\AppData\Local\Programs\528a\svc528a.exe
    "C:\Users\Admin\AppData\Local\Programs\528a\svc528a.exe"
    3⤵
    - Executes dropped EXE
    PID:4300

C:\Users\Admin\AppData\Local\AppRt528a\apprt528a.exe
C:\Users\Admin\AppData\Local\AppRt528a\apprt528a.exe
1⤵
- Executes dropped EXE
PID:892

C:\Users\Admin\AppData\Local\Programs\528a\svc528a.exe
C:\Users\Admin\AppData\Local\Programs\528a\svc528a.exe
1⤵
- Executes dropped EXE
PID:5068

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

apprt528a.exe

Path C:\Users\Admin\AppData\Local\AppRt528a\apprt528a.exe
Size 316KB
SHA256 8de3bb269e948366b7ec6f9264b149fa092bd0351cb937d71fdee8411e4c69b3
MD5 f8c0828190c469e6ac0d171c6a512056
SHA1 16333107f0de063fda57441fe90ee62b683856c8
SHA512 49cab2caefcc19dfd5389242a668ea2860ed799d7ac4cfbe576e9fe1c5750f42045fa6508c54fed3ddcc7de406c3d7aa70bbde01922fdd1467931d59aed6b4a2
SSDEEP 6144:KQ8OyYvc36AVuc7DQd/5zlgBR4JDvyevbShure:Kj16Qu15yBRCD6Jure
TLSH
T142648D5AF3A814F9F977923CC8529607F672BC160760D78F27A0466A3F236A09D3E711
MD5 SHA1 SHA512 SSDEEP TLSH

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svc528a.exe

Path C:\Users\Admin\AppData\Local\Programs\528a\svc528a.exe
Size 317KB
SHA256 2f482ff8f69d37c4e13da5b07ac9c461c6f3bcc130e6a378faa302b493b0c11b
MD5 554151d1e4c5a49a24646596f4f90d26
SHA1 c3756527cb5ab9657abf127f4a3be13ce8ff767b
SHA512 1c31912ec1893f69625fac32bba97f3135b91a14dbe13104c8da8fe5467e403a31c5cba2c6877f15cddde853543c224598c19e34cc84ade5f99f05eac9c03f40
SSDEEP 6144:FQ8OyYvc36AVuc7DQd/5zlgBR4JDyyeWbSW1rj:Fj16Qu15yBRCDhx1rj
TLSH
T141648D5AF3A814F9F977923CC8529607E772BC160760D78F27A0466A3F236A09D3E711
MD5 SHA1 SHA512 SSDEEP TLSH

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