Analysis
- max time kernel
148s - max time network
147s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
03/10/2026, 12:49
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe
Resource
win10v2004-20260911-en
15 signatures
150 seconds
General
- Target 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe
- Size 841KB
- Sample261003-p2vsmayfla
- SHA256 a9b33d6e8235316a49e56760dc59b49eacaf3fc79332600474dc910b2ffe66ff
- MD5 502826eb2cb4bdd88561e48f8680f3b3
- SHA1 4d779932f0de6e349dc6eaea0dce630fd028a446
- SHA512 9d1df8fa4f841429fcf76646a0cf4fef8937ba05bccce6d2860e03698ae26465824e5e3412245026f5bea7ca0f6d40ca72fc4c6f632e6fd9baf7c5b9e4853881
- SSDEEP 12288:vaF1gMB7v3qnCiGErQohh0F4XCJ8lnytQ94qpHzouoJx9VOBjvrEH7Xsb:yLHhv6CCrjTnytQ+qpTo5PwrEH7XK
- TLSH T1FE05CF12B3D682F6D9933870397BE32BEB35752D4327C487A7E12E729E111015B3A762
- 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" 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Detects Floxif payload 1 IoCs
resource yara_rule behavioral2/files/0x000b00000001b2c5-1.dat floxif - UPX dump on OEP (original entry point) 7 IoCs
resource yara_rule behavioral2/files/0x000b00000001b2c5-1.dat UPX behavioral2/memory/4104-4-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/4104-57-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/4104-61-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/4104-63-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/4104-64-0x0000000010000000-0x0000000010030000-memory.dmp UPX behavioral2/memory/4104-71-0x0000000010000000-0x0000000010030000-memory.dmp UPX - ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral2/files/0x000b00000001b2c5-1.dat acprotect - Loads dropped DLL 1 IoCs
pid Process 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_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: 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe -
resource yara_rule behavioral2/files/0x000b00000001b2c5-1.dat upx behavioral2/memory/4104-4-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/4104-57-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/4104-61-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/4104-63-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/4104-64-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/4104-71-0x0000000010000000-0x0000000010030000-memory.dmp upx - Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files\Common Files\System\symsrv.dll 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe File created \??\c:\program files\common files\system\symsrv.dll.000 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe - 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 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4104 2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.exe"1⤵
- Modifies security service
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4104
Network
MITRE ATT&CK Enterprise v16
Replay 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\2026-10-02_502826eb2cb4bdd88561e48f8680f3b3_agent-tesla_backswap_elex_floxif_remcos_stop.ini
- Size 2KB
- SHA256 1325d85351205e241d7ec56f7f5b6b846988fb60c6cb27f6bd10b1b24fd8d2da
- MD5 b23137632edf9dd9922089b3f6e2f07c
- SHA1 99d321c7412813bbaae0b10a4ff59200847397e0
- SHA512 6e6824033249d7c0cd2f27e322c28ad3bb46baf883a70211d8530b95a89377e02ea9e97bb1dc44cb3cc0632c941f91ec33a06df31a5c425dcd18d34bef58b32b
- TLSH T1B351391722E84619FAF37B44E6B90A720B367C96AD3CD94C49D10D4E49E0E409877BFB
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\A1D26E2\3D8C15681008.tmp
- Size 765KB
- SHA256 48efc1e775c88e01600b049e1e55831fefaea5d624d94892a6efaa632181e2fe
- MD5 1d3072caa9c82faea4ce0aff3c267d5f
- SHA1 45431656c6d6e841c40bc8e80bed891193caff21
- SHA512 9d26e856ace8d48382d16346bff089439f7263b2c3f9c4dbc2cd8a797a704ab2d447df0e303b4a40cead274d0871aec1819ee81c40697efb7c759cae27ff76f5
- SSDEEP 12288:vaWzgMg7v3qnCiGErQohh0F4XCJ8lnytQ94qpHzouoJx9VM:yaHMv6CCrjTnytQ+qpTo5PE
- TLSH T1FCF4CF12F7D680B6D99339B1197BE32BEB3575194327C4C7ABE02E729E111405B3A3A2
- MD5 SHA1 SHA512 SSDEEP TLSH