floxif | 8791f23b682c968425e52a8925f2181bfcb18f35c896a8d938daccbb2616d89c

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
04/07/2024, 08:05

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General

Target

8791f23b682c968425e52a8925f2181bfcb18f35c896a8d938daccbb2616d89c.exe
Size

234KB
MD5

579b8445666d796603af143fb185700d
SHA1

03c3bf68eb9c33ef56d771238a4c200af6287ffd
SHA256

8791f23b682c968425e52a8925f2181bfcb18f35c896a8d938daccbb2616d89c
SHA512

006fa61068bbb8921b38e95fd6cb74073dee8abb1bd1f2799df4a56680706f97fc70962ce11ac55711f67a417e7757f3a51c3213d16f05cf3f520027ba6c7959
SSDEEP

3072:zwzvOYTR5YP/aKavT/DvbEvfpKI2B+Nl4jz+b0atWH1TmFtotpcat8iKdlVST31E:mRiP/aK2+4/B+rdBV+UdvrEFp7hKx

Score

10^/10

floxif backdoor persistence privilege_escalation trojan upx

Malware Config

Signatures

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
behavioral1/files/0x000b000000012301-1.dat	floxif

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
behavioral1/files/0x000b000000012301-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2288	8791f23b682c968425e52a8925f2181bfcb18f35c896a8d938daccbb2616d89c.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2288-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/files/0x000b000000012301-1.dat	upx
behavioral1/memory/2288-6-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	8791f23b682c968425e52a8925f2181bfcb18f35c896a8d938daccbb2616d89c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2288	8791f23b682c968425e52a8925f2181bfcb18f35c896a8d938daccbb2616d89c.exe

C:\Users\Admin\AppData\Local\Temp\8791f23b682c968425e52a8925f2181bfcb18f35c896a8d938daccbb2616d89c.exe
"C:\Users\Admin\AppData\Local\Temp\8791f23b682c968425e52a8925f2181bfcb18f35c896a8d938daccbb2616d89c.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:2288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/2288-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2288-5-0x0000000001390000-0x00000000013B9000-memory.dmp

Filesize
164KB

Download
memory/2288-6-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download