floxif | d79252fd7e17f522867ae21a56443b417444079e477270065c1dff2c6a474836

General

Target
2026-08-09_f74c85ccb8d1cdaa18c1835b40c650fd_coinminer_elex_floxif_wannacry.exe
Size 1.1MB
Sample260809-fbqljstxey
SHA256 d79252fd7e17f522867ae21a56443b417444079e477270065c1dff2c6a474836
MD5 f74c85ccb8d1cdaa18c1835b40c650fd
SHA1 541c8c8dd6a3f1724dc17c6372ca163c43c0f23d
SHA512 2d0fb2b35f47debd1f063d632aec7a522ddc6926189a13dac32892cdfe29e5cf3ff4a5f5d53830169e7f4c4aba8747d0fc5452d3e6cdbb28736873d5962c8998
SSDEEP 24576:k1qU+avssc+IvFZed2PbmZ7bPOO7ZqjhaoRCJfZDTrWVDTrEH7V:k1qU+wbeFNqZX37ZqjhaoRCJfZDTrW5I
TLSH
T18A3512003B5B47FBD6701170B9187FA15AF5E43C4B1A9AC7D3450A1BAE6C4CA8ABE0D7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor discovery execution floxif persistence privilege_escalation 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/0x0011000000019a98-1.dat	floxif

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral2/files/0x0011000000019a98-1.dat	UPX
behavioral2/memory/4860-4-0x0000000010000000-0x0000000010030000-memory.dmp	UPX
behavioral2/memory/4860-26-0x0000000010000000-0x0000000010030000-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.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0011000000019a98-1.dat	acprotect

Executes dropped EXE 1 IoCs

pid	Process
4532	RegWorkshopX64.exe

Loads dropped DLL 1 IoCs

pid	Process
4860	2026-08-09_f74c85ccb8d1cdaa18c1835b40c650fd_coinminer_elex_floxif_wannacry.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0011000000019a98-1.dat	upx
behavioral2/memory/4860-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/4860-26-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2026-08-09_f74c85ccb8d1cdaa18c1835b40c650fd_coinminer_elex_floxif_wannacry.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
5884	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	2026-08-09_f74c85ccb8d1cdaa18c1835b40c650fd_coinminer_elex_floxif_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\EditFlags = "1786250536"	RegWorkshopX64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\Edit with Registry Workshop	RegWorkshopX64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\Edit with Registry Workshop\ = "Registry &Workshop"	RegWorkshopX64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\Edit with Registry Workshop\command	RegWorkshopX64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\Edit with Registry Workshop\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RegWorkshopK_v501\\RegWorkshopX64.exe\" \"%1\""	RegWorkshopX64.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4532	RegWorkshopX64.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4860	2026-08-09_f74c85ccb8d1cdaa18c1835b40c650fd_coinminer_elex_floxif_wannacry.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4532	RegWorkshopX64.exe
4532	RegWorkshopX64.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 5884	4860	2026-08-09_f74c85ccb8d1cdaa18c1835b40c650fd_coinminer_elex_floxif_wannacry.exe	88
PID 5884 wrote to memory of 4532	5884	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-08-09_f74c85ccb8d1cdaa18c1835b40c650fd_coinminer_elex_floxif_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_f74c85ccb8d1cdaa18c1835b40c650fd_coinminer_elex_floxif_wannacry.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:4860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c if exist C:\Windows\SysWOW64 RegWorkShopX64.exe
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5884
- - C:\Users\Admin\AppData\Local\Temp\RegWorkshopK_v501\RegWorkshopX64.exe
    RegWorkShopX64.exe
    3⤵
    - Executes dropped EXE
    - Modifies registry class
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:4532

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Privilege Escalation

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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

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RegWorkshopX64.exe

Path C:\Users\Admin\AppData\Local\Temp\RegWorkshopK_v501\RegWorkshopX64.exe
Size 1.7MB
SHA256 3ebd5bb49a73f8ae4680934ec6ad021ef1a1aba8c5ee631dd2b9681ad486c863
MD5 4fa6f996170a71d651a8e1f61d2ec1a7
SHA1 adeb0524f3abee4c1a9b97fe2e99bc1d6d09d6f9
SHA512 3659d67591c4f1cb8f0021b089c560e389acdbaa2dbe9b6ad876623eefc0f8db9b7cbe9a175a1deb521419c9bd7fc98d52b2602d92c4c8d3608087f1ab6b5db1
SSDEEP 24576:UYdcRL1U9Ryek3mD8lZuARGZ+qSc+x7rrm9oZW/nMO8IjISRt+:UbSc3mD8lZNkZgPr3ZW/nL8IkSRt+
TLSH
T166857C46E77840A5D1A6C1BACA12CB77D7B27C055734978B055AFB2E2F333A1D839322
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

rwreg.txt

Path C:\Users\Admin\AppData\Local\Temp\RegWorkshopK_v501\rwreg.txt
Size 130B
SHA256 2c2684df96de0064d53da53d6a3fb6ad31ba05a0417228a8001c5754c5713234
MD5 325b9498159a5c272c77616f72b1a6c4
SHA1 5a3fd313f457f597c448b4305bb36bfb9f2ea719
SHA512 3c703f996127d0bf18ea30f239f84a5c04959829ebf73917d1958acc7f9064b8205a283978ccd2dff7eee426932fee17175b1a3064039ba7c82c35343a2ecea5
TLSH
T1DAC02BE3B545005188C41CC4BF400F42564E16699ADE80D1329B4C002650A80F02C442
MD5 SHA1 SHA512 TLSH

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rwreskor.dll

Path C:\Users\Admin\AppData\Local\Temp\RegWorkshopK_v501\rwreskor.dll
Size 352KB
SHA256 725f9e3d35149f2fabbd149ffe9107df72e8f560052cd4fdc8e9285967585403
MD5 8dee8b389227f3d146d14fa5acda0fb3
SHA1 ee1ade5cc5bcd8707543fb2bcea4a8804c3d985a
SHA512 e9dc421c7c3b6e99b689809961697c9763b88d51e76abb21ebd707b0dfddfe883c770a49aa1dd92d07d5362439fd974fca058aa2c7961f5178e4077043f9c090
SSDEEP 6144:4WiBoeBVMp6SPdjISRhJVOW/VgdIdJdohyhjt:biO8vSPdjISRfVOWmdIdJdohyhjt
TLSH
T19174F942EA0DEC94D16001746532DB7D0B92BFB952A84D1AF1EAF73F45740E2B82EC5B
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4532-25-0x0000000002570000-0x0000000002571000-memory.dmp

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memory/4532-28-0x0000000002570000-0x0000000002571000-memory.dmp

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memory/4860-4-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/4860-26-0x0000000010000000-0x0000000010030000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads