floxif | 8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033

Reason

Machine shutdown

General

Target

8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033N.exe
Size

357KB
MD5

a97021623004bfaa46a0419c5cc82460
SHA1

e6ad7223d63c05bacde3828741940ca28d0b8a68
SHA256

8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033
SHA512

2f17632128269410a9fbce2fc9dd08df4c92c00fd79de27935088ec1e75ef85543c5cf6769bc2357c719855c0661bb0aa1a65b99fee3ecf81c6d73a0102b8e34
SSDEEP

6144:v0TpJ7+/8N180QCJU380FOqakPhG6QfzWE4xyN1mFmbZYMKaXhJBV+UdvrEFp7hO:Y37Ai11QCJUs0FOqaShCyUNr6iJBjvr1

Score

10^/10

floxif backdoor discovery trojan upx

Malware Config

Signatures

Floxif family
floxif
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/0x0009000000023c9d-2.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0009000000023c9d-2.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1596	8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033N.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1596-0-0x0000000000400000-0x00000000004B4000-memory.dmp	upx
behavioral2/files/0x0009000000023c9d-2.dat	upx
behavioral2/memory/1596-5-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1596-19-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1596-18-0x0000000000400000-0x00000000004B4000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033N.exe

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

System Information Discovery
T1082

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	8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033N.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "226"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1596	8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033N.exe
1596	8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1596	8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033N.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2488	LogonUI.exe

C:\Users\Admin\AppData\Local\Temp\8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033N.exe
"C:\Users\Admin\AppData\Local\Temp\8b1013698f6c088cbd07dde61d76ccd474a42680e3a97c1883f3cd7db153d033N.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1596

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa399a855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

Replay Monitor

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Downloads

C:\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/1596-0-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/1596-5-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1596-19-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1596-18-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download

Analysis

Sharing

Errors