Analysis
- max time kernel
148s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
08/08/2026, 17:57
Static task
static1
Behavioral task
behavioral1
Sample
2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe
Resource
win11ltsc2024-20260709-en
General
- Target 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe
- Size 884KB
- Sample260808-wjkchabl4w
- SHA256 8ca12c7c069b3ca1dd74c9f9b80d30505a78d2a9e1434d4887a4a640fe547f74
- MD5 4d39601099ad6a87718ee39b2134a980
- SHA1 2ac98839eaab75fb4f48d78f2a1855e682018373
- SHA512 be8ffb33f88ba3f0bcb31410f1074e60b914092a64ddec2e6331eb59053b826896573c44141d456e24ad6a94c9dd2afecee3beaae8438eda7f180fc34b5f48e7
- SSDEEP 12288:ZaWzgMI7v3qnCi04Qohh0F4pCJ8lnyOQwlsZk03iGFRABjvrEH745:4aHUv6CsjlnyOQ9q0SGirEH7e
- TLSH T1B915C012B7C681F6D9933870397BE326EB35692D0327C497A7E13E728F251415B3A362
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Modifies security service 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wuauserv\Start = "4" 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Detects Floxif payload 1 IoCs
resource yara_rule behavioral2/files/0x000b00000001b840-1.dat floxif - UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral2/files/0x000b00000001b840-1.dat UPX behavioral2/memory/1196-3-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/1196-58-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/1196-61-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/1196-64-0x0000000010000000-0x0000000010030000-memory.dmp UPX - Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
- ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral2/files/0x000b00000001b840-1.dat acprotect - Loads dropped DLL 1 IoCs
pid Process 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\d: 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe -
resource yara_rule behavioral2/files/0x000b00000001b840-1.dat upx behavioral2/memory/1196-3-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/1196-58-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/1196-61-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/1196-64-0x0000000010000000-0x0000000010030000-memory.dmp upx - Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files\Common Files\System\symsrv.dll 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe File created \??\c:\program files\common files\system\symsrv.dll.000 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1196 2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.exe"1⤵
- Modifies security service
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1196
Network
MITRE ATT&CK Enterprise v16
Persistence
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1AppInit DLLs
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1AppInit DLLs
1Replay Monitor
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Downloads
- Path C:\Program Files\Common Files\System\symsrv.dll
- Size 67KB
- SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
- MD5 7574cf2c64f35161ab1292e2f532aabf
- SHA1 14ba3fa927a06224dfe587014299e834def4644f
- SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab
- SSDEEP 1536:YjV8y93KQpFQmPLRk7G50zy/riF12jvRyo0hQk7ZL:c8y93KQjy7G55riF1cMo03V
- TLSH T17863F1372AB5807DDD210D37949F835AB771E5A76C20643FC25907D988B8DD0E3239AE
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Program Files\Common Files\System\symsrv.dll.000
- Size 114B
- SHA256 aefc503b1ed462d7b6280228a7b5b710792273b78934426f88325341ac5b5a92
- MD5 e609411db8aa6775d0344c75c23ae79b
- SHA1 1d2ff6194bf159ce36cd0461cd3da29486d1e97d
- SHA512 6884ff5c07bc687132c965a59cb8c5a898a25da74c6c846c1d6089ddca8007cb7e4d2f8520bdce9fbcf6e2f9c9e5c28d8c8d6d049d3522470bdc7d38bbfa0ad0
- TLSH T1FFB09262AA2791EAE1AA224505A0248C1ED0B62AB48638002EBA5A4E93256A85916147
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\2026-08-08_4d39601099ad6a87718ee39b2134a980_agent-tesla_backswap_elex_floxif_remcos_stop.ini
- Size 2KB
- SHA256 e3fdefe104ea9ebbdcc7265ec3950412cbb968156606631e6b5f23b33f13feed
- MD5 660c4a0d589cf1e826a65593e3167699
- SHA1 00b3ec96fc728ea388b7b4c96244896c65b9f42f
- SHA512 f94fb710493cef41d4941518b3d594afab39f00e897c989acea5f857f0ad971670686b305b939d41a0eb36b2e1776c19cf71f803f68ea2dd10907ca24082062d
- TLSH T1F4514A1722E84619F6F37B40E6B90A720B367C96AD3CD94C49D10D4E49E0E409877BFB
- MD5 SHA1 SHA512 TLSH