cybrexagent | 7ec311247d8f8876047366ecb7d78243670fff8517c867cb8831f52db11863b4

Analysis

max time kernel
150s
max time network
115s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/08/2026, 12:30

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General

Target
2026-08-03_3486134e88dd5201205bd055cf975fbd_akira_glassworm_icedid_luca-stealer_rusty-stealer.exe
Size 11.8MB
Sample260804-ppsgqszhrc
SHA256 7ec311247d8f8876047366ecb7d78243670fff8517c867cb8831f52db11863b4
MD5 3486134e88dd5201205bd055cf975fbd
SHA1 3eb2549eab074eb2a792500cecebb67133c6e6e0
SHA512 324e51548519857bb730cf703c51778ad9234c47fa14ddfc6b2c23cc9c906d90ea97c9ffd529dce215f34f8bdfd98733e8dc62d7c5246878e6796a3fe57c19af
SSDEEP 98304:6yxUcBG9n9dBkVndDTn55Kf69nOoQfR7tzrYo20U:fLiANTFitzrF
TLSH
T1F9C63B16FAAA54ECC45AC474C3564A23AA3174CA0B35BAFF45C486783F6ABF05E3C714
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution cybrexagent stealer

Malware Config

Signatures

Family: CybrexAgent
CybrexAgent is a Windows stealer written in Rust.
stealer cybrexagent

Detects CybrexAgent 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000001c593-0.dat	family_cybrexagent

Detects executables containing SQL queries to confidential data stores. Observed in infostealers 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000001c593-0.dat	INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore

Executes dropped EXE 1 IoCs

pid	Process
2724	CybRex_Agent_Secure.exe

Looks up external IP address via web service 1 TTPs 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

discovery

Internet Connection Discovery

T1016.001

flow	ioc
1	ip-api.com

Executes a command shell one-liner 1 TTPs 3 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5332	cmd.exe
2804	cmd.exe
5864	cmd.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 5332	2004	2026-08-03_3486134e88dd5201205bd055cf975fbd_akira_glassworm_icedid_luca-stealer_rusty-stealer.exe	89
PID 2004 wrote to memory of 2804	2004	2026-08-03_3486134e88dd5201205bd055cf975fbd_akira_glassworm_icedid_luca-stealer_rusty-stealer.exe	91
PID 2804 wrote to memory of 2724	2804	cmd.exe	93
PID 2724 wrote to memory of 5864	2724	CybRex_Agent_Secure.exe	94
PID 5864 wrote to memory of 4120	5864	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\2026-08-03_3486134e88dd5201205bd055cf975fbd_akira_glassworm_icedid_luca-stealer_rusty-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-03_3486134e88dd5201205bd055cf975fbd_akira_glassworm_icedid_luca-stealer_rusty-stealer.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c copy /Y C:\Users\Admin\AppData\Local\Temp\2026-08-03_3486134e88dd5201205bd055cf975fbd_akira_glassworm_icedid_luca-stealer_rusty-stealer.exe C:\Users\Admin\AppData\Local\CybRex_Agent_Secure\CybRex_Agent_Secure.exe
  2⤵
  - Executes a command shell one-liner
  PID:5332
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c start "" C:\Users\Admin\AppData\Local\CybRex_Agent_Secure\CybRex_Agent_Secure.exe
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:2804
- - C:\Users\Admin\AppData\Local\CybRex_Agent_Secure\CybRex_Agent_Secure.exe
    C:\Users\Admin\AppData\Local\CybRex_Agent_Secure\CybRex_Agent_Secure.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:2724
  - - C:\Windows\system32\cmd.exe
      "cmd" /C "reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography /v MachineGuid"
      4⤵
      Executes a command shell one-liner
      Suspicious use of WriteProcessMemory
      PID:5864
    - - C:\Windows\system32\reg.exe
        
        reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography /v MachineGuid
        5⤵
        
        PID:4120

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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

CybRex_Agent_Secure.exe

Path C:\Users\Admin\AppData\Local\CybRex_Agent_Secure\CybRex_Agent_Secure.exe
Size 11.8MB
SHA256 7ec311247d8f8876047366ecb7d78243670fff8517c867cb8831f52db11863b4
MD5 3486134e88dd5201205bd055cf975fbd
SHA1 3eb2549eab074eb2a792500cecebb67133c6e6e0
SHA512 324e51548519857bb730cf703c51778ad9234c47fa14ddfc6b2c23cc9c906d90ea97c9ffd529dce215f34f8bdfd98733e8dc62d7c5246878e6796a3fe57c19af
SSDEEP 98304:6yxUcBG9n9dBkVndDTn55Kf69nOoQfR7tzrYo20U:fLiANTFitzrF
TLSH
T1F9C63B16FAAA54ECC45AC474C3564A23AA3174CA0B35BAFF45C486783F6ABF05E3C714
MD5 SHA1 SHA512 SSDEEP TLSH

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