firseria | e06a5316d4ee4df2253072b20563c0eda55ffca4dfc10c809ec81f8917ab4634

Analysis

max time kernel
150s
max time network
114s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
11/07/2026, 16:48

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General

Target
2026-07-11_31f74140d542a7870a9393459bd8d978_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
Size 475KB
Sample260711-vbbjysft9p
SHA256 e06a5316d4ee4df2253072b20563c0eda55ffca4dfc10c809ec81f8917ab4634
MD5 31f74140d542a7870a9393459bd8d978
SHA1 8c99ab73d7369abfd8ad3ca1a8fe0debb1c01b63
SHA512 d60c7e945cb8514247ee7f4493652df82fe66e8488c642f843c17066cb7aaa042e264fe37c87abb31d5155b887e78522c818259a5944f586ae05a42163cd6deb
SSDEEP 6144:cFGD8se9mobiBoZ85FWWpzjEP8frPdXviG5OEMX+g:cS8d9mobiiZ8SWpzjEPsbtT5mX+g
TLSH
T1CDA41A4557979063DC07023A89F3835C6B22EA3BE7166FC373D81B36CE366952EA02D5
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

adware discovery downloader firseria

Malware Config

Signatures

Family: Firseria
Firseria a downloader/adware written in C++.
downloader adware firseria

Detects Firseria 2 IoCs

downloader adware

resource	yara_rule
behavioral2/memory/5780-0-0x0000000000400000-0x000000000047C000-memory.dmp	family_firseria
behavioral2/memory/5780-1-0x0000000000400000-0x000000000047C000-memory.dmp	family_firseria

Detects executables built or packed with MPress PE compressor 2 IoCs

resource	yara_rule
behavioral2/memory/5780-0-0x0000000000400000-0x000000000047C000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/5780-1-0x0000000000400000-0x000000000047C000-memory.dmp	INDICATOR_EXE_Packed_MPress

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-11_31f74140d542a7870a9393459bd8d978_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe

C:\Users\Admin\AppData\Local\Temp\2026-07-11_31f74140d542a7870a9393459bd8d978_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-11_31f74140d542a7870a9393459bd8d978_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:5780

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/5780-0-0x0000000000400000-0x000000000047C000-memory.dmp

Download

memory/5780-1-0x0000000000400000-0x000000000047C000-memory.dmp