floxif | e66ebd351a28bd807852d01672270aaa0c5545b5b48722246c6358854265b39b

Analysis

max time kernel
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
30/07/2026, 15:50

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General

Target
2026-07-30_1d0940c41bc34898a6e58847bb56d299_amadey_elex_floxif_remcos.exe
Size 3.0MB
Sample260730-tae1ba1flh
SHA256 e66ebd351a28bd807852d01672270aaa0c5545b5b48722246c6358854265b39b
MD5 1d0940c41bc34898a6e58847bb56d299
SHA1 b832429e3a788508cdc4875dcb5e42daf3f5295e
SHA512 bdf0168d43121dd975e2f7b008d9bf3bf08612cf23ca3a2801430914cde7555d8b35f1656a4a217a00582c8ba4cf600a4a55f25ce45db36698c9839291368020
SSDEEP 49152:wrixJOzOq45oxk/GruBcCUccghdcce+71m:ei7q4H/GKBcjghPT7U
TLSH
T1ABE5BF013790837EF9E366719CE42A3297753E550B31848F326C3E1A6FB36A19E78715
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery execution floxif trojan upx

Malware Config

Signatures

Family: Floxif, Floodfix
Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.
backdoor trojan floxif

Detects Floxif payload 1 IoCs

backdoor

resource	yara_rule
behavioral2/files/0x000500000001b6f0-1.dat	floxif

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral2/files/0x000500000001b6f0-1.dat	UPX
behavioral2/memory/3916-3-0x0000000010000000-0x0000000010030000-memory.dmp	UPX
behavioral2/memory/3916-6-0x0000000010000000-0x0000000010030000-memory.dmp	UPX

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000500000001b6f0-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3916	2026-07-30_1d0940c41bc34898a6e58847bb56d299_amadey_elex_floxif_remcos.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000500000001b6f0-1.dat	upx
behavioral2/memory/3916-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3916-6-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2026-07-30_1d0940c41bc34898a6e58847bb56d299_amadey_elex_floxif_remcos.exe

Executes a command shell one-liner 1 TTPs 1 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
3196	cmd.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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-30_1d0940c41bc34898a6e58847bb56d299_amadey_elex_floxif_remcos.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3284	WMIC.exe
3284	WMIC.exe
3284	WMIC.exe
3284	WMIC.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	3916	2026-07-30_1d0940c41bc34898a6e58847bb56d299_amadey_elex_floxif_remcos.exe
Token: SeIncreaseQuotaPrivilege	3284	WMIC.exe
Token: SeSecurityPrivilege	3284	WMIC.exe
Token: SeTakeOwnershipPrivilege	3284	WMIC.exe
Token: SeLoadDriverPrivilege	3284	WMIC.exe
Token: SeSystemProfilePrivilege	3284	WMIC.exe
Token: SeSystemtimePrivilege	3284	WMIC.exe
Token: SeProfSingleProcessPrivilege	3284	WMIC.exe
Token: SeIncBasePriorityPrivilege	3284	WMIC.exe
Token: SeCreatePagefilePrivilege	3284	WMIC.exe
Token: SeBackupPrivilege	3284	WMIC.exe
Token: SeRestorePrivilege	3284	WMIC.exe
Token: SeShutdownPrivilege	3284	WMIC.exe
Token: SeDebugPrivilege	3284	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3284	WMIC.exe
Token: SeRemoteShutdownPrivilege	3284	WMIC.exe
Token: SeUndockPrivilege	3284	WMIC.exe
Token: SeManageVolumePrivilege	3284	WMIC.exe
Token: 33	3284	WMIC.exe
Token: 34	3284	WMIC.exe
Token: 35	3284	WMIC.exe
Token: 36	3284	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3284	WMIC.exe
Token: SeSecurityPrivilege	3284	WMIC.exe
Token: SeTakeOwnershipPrivilege	3284	WMIC.exe
Token: SeLoadDriverPrivilege	3284	WMIC.exe
Token: SeSystemProfilePrivilege	3284	WMIC.exe
Token: SeSystemtimePrivilege	3284	WMIC.exe
Token: SeProfSingleProcessPrivilege	3284	WMIC.exe
Token: SeIncBasePriorityPrivilege	3284	WMIC.exe
Token: SeCreatePagefilePrivilege	3284	WMIC.exe
Token: SeBackupPrivilege	3284	WMIC.exe
Token: SeRestorePrivilege	3284	WMIC.exe
Token: SeShutdownPrivilege	3284	WMIC.exe
Token: SeDebugPrivilege	3284	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3284	WMIC.exe
Token: SeRemoteShutdownPrivilege	3284	WMIC.exe
Token: SeUndockPrivilege	3284	WMIC.exe
Token: SeManageVolumePrivilege	3284	WMIC.exe
Token: 33	3284	WMIC.exe
Token: 34	3284	WMIC.exe
Token: 35	3284	WMIC.exe
Token: 36	3284	WMIC.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 3196	3916	2026-07-30_1d0940c41bc34898a6e58847bb56d299_amadey_elex_floxif_remcos.exe	89
PID 3196 wrote to memory of 3284	3196	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\2026-07-30_1d0940c41bc34898a6e58847bb56d299_amadey_elex_floxif_remcos.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-30_1d0940c41bc34898a6e58847bb56d299_amadey_elex_floxif_remcos.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Windows\system32\cmd.exe
  "C:\Windows\Sysnative\cmd.exe" /c WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\2026-07-30_1d0940c41bc34898a6e58847bb56d299_amadey_elex_floxif_remcos.exe"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:3196
- - C:\Windows\System32\Wbem\WMIC.exe
    WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\2026-07-30_1d0940c41bc34898a6e58847bb56d299_amadey_elex_floxif_remcos.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3284

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 Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

symsrv.dll

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

Submit Download

memory/3916-3-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/3916-6-0x0000000010000000-0x0000000010030000-memory.dmp

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