floxif | d42fbbc799113ba6ce2120444342bdbcc0dab5b868c0c645887cdbd18029d133

Analysis

max time kernel
92s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-12-2024 15:45

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General

Target

d42fbbc799113ba6ce2120444342bdbcc0dab5b868c0c645887cdbd18029d133.exe
Size

3.3MB
MD5

3e5c4784297e166c16f47a1ceb436886
SHA1

0a290c690f29fbd6e14830bd8de18861a6bd9655
SHA256

d42fbbc799113ba6ce2120444342bdbcc0dab5b868c0c645887cdbd18029d133
SHA512

efab05e2226d022715e19194624898ea3cc822e66839da70f1f65a9c26cc629f2a69843458372376c84530c042c877b58064f24e063e4719ff1926055505cc5d
SSDEEP

49152:aBO2roFObnNMl2f8wBnaiIeTyxd8yS7Gbl2jbkMTLI8qd9cBF2xcUAQ1S:cO2r+ObnCtia7eTVyS6blkk9cBF3

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/0x000c000000023ba1-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000c000000023ba1-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
556	d42fbbc799113ba6ce2120444342bdbcc0dab5b868c0c645887cdbd18029d133.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023ba1-1.dat	upx
behavioral2/memory/556-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/556-7-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	d42fbbc799113ba6ce2120444342bdbcc0dab5b868c0c645887cdbd18029d133.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1256	556	WerFault.exe	81

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	d42fbbc799113ba6ce2120444342bdbcc0dab5b868c0c645887cdbd18029d133.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	556	d42fbbc799113ba6ce2120444342bdbcc0dab5b868c0c645887cdbd18029d133.exe

C:\Users\Admin\AppData\Local\Temp\d42fbbc799113ba6ce2120444342bdbcc0dab5b868c0c645887cdbd18029d133.exe
"C:\Users\Admin\AppData\Local\Temp\d42fbbc799113ba6ce2120444342bdbcc0dab5b868c0c645887cdbd18029d133.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 556 -s 1076
  2⤵
  - Program crash
  PID:1256

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 556 -ip 556
1⤵
PID:2368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/556-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/556-7-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/556-5-0x0000000000030000-0x0000000000373000-memory.dmp

Filesize
3.3MB

Download