floxif | 1de063e0db5d29746136f7884fc06adf6cee5800b6ec3e0c3c3bf0ff73ac89f7

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 03:41

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General

Target

1de063e0db5d29746136f7884fc06adf6cee5800b6ec3e0c3c3bf0ff73ac89f7.dll
Size

198KB
MD5

fc8b336d12657eec8394bc7c3ea98d66
SHA1

73924a761e7c043834b5bbf54a89b5444074ede4
SHA256

1de063e0db5d29746136f7884fc06adf6cee5800b6ec3e0c3c3bf0ff73ac89f7
SHA512

cfb1e13b5148ca9c822a3bf333570bcf2f8fbba99cd09e3c9f637ee91d3a1e4f88311b8d64696dc26599af74da6c791b53c757844bc07a8f0baf9a8e8e51657f
SSDEEP

6144:GbMs43blaMf+gJvoK3SBV+UdvrEFp7hKQ:GbfuJ+g+KiBjvrEH7T

Score

10^/10

floxif backdoor discovery persistence privilege_escalation 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
behavioral1/files/0x000b0000000120dc-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/0x000b0000000120dc-1.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
2468	rundll32.exe
2056	WerFault.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000b0000000120dc-1.dat	upx
behavioral1/memory/2468-3-0x0000000000170000-0x00000000001A0000-memory.dmp	upx
behavioral1/memory/2468-7-0x0000000000170000-0x00000000001A0000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2056	2468	WerFault.exe	30

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	rundll32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeSecurityPrivilege	2468	rundll32.exe
Token: 35	2468	rundll32.exe
Token: SeLoadDriverPrivilege	2468	rundll32.exe
Token: SeBackupPrivilege	2468	rundll32.exe
Token: SeRestorePrivilege	2468	rundll32.exe
Token: SeDebugPrivilege	2468	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2052 wrote to memory of 2468	2052	rundll32.exe	30
PID 2052 wrote to memory of 2468	2052	rundll32.exe	30
PID 2052 wrote to memory of 2468	2052	rundll32.exe	30
PID 2052 wrote to memory of 2468	2052	rundll32.exe	30
PID 2052 wrote to memory of 2468	2052	rundll32.exe	30
PID 2052 wrote to memory of 2468	2052	rundll32.exe	30
PID 2052 wrote to memory of 2468	2052	rundll32.exe	30
PID 2468 wrote to memory of 2056	2468	rundll32.exe	31
PID 2468 wrote to memory of 2056	2468	rundll32.exe	31
PID 2468 wrote to memory of 2056	2468	rundll32.exe	31
PID 2468 wrote to memory of 2056	2468	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1de063e0db5d29746136f7884fc06adf6cee5800b6ec3e0c3c3bf0ff73ac89f7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2052
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1de063e0db5d29746136f7884fc06adf6cee5800b6ec3e0c3c3bf0ff73ac89f7.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2468
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2468 -s 360
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:2056

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

System Location Discovery

T1614

System Language Discovery

T1614.001

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/2468-3-0x0000000000170000-0x00000000001A0000-memory.dmp

Filesize
192KB

Download
memory/2468-7-0x0000000000170000-0x00000000001A0000-memory.dmp

Filesize
192KB

Download
memory/2468-6-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download