floxif | 0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972d

General

Target

0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972dN.exe
Size

3.0MB
MD5

e499ff1a61778f2d517d521fcd373b80
SHA1

48d83dbc6790c859f8b8648f5e37a8dbd1addbb8
SHA256

0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972d
SHA512

10080748cf6340db7cd9f7be8e0240f0eeec858408cc48bc9943883b573ceb057377b9477101197026842ff280b82f8ec0c441c454f6d60b26b7a9fd25b8ab73
SSDEEP

98304:ffXEXFBUOCxyoQThlu9SYVqelj2vSVcLK8X+AnmTVhkXXXXBPT:nXEXFB3AHJlva5uAnmTVh4PT

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
behavioral2/files/0x000c000000023b82-1.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
behavioral2/files/0x000c000000023b82-1.dat	acprotect

Loads dropped DLL 5 IoCs

pid	Process
5032	0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972dN.exe
3448	WerFault.exe
1368	WerFault.exe
816	WerFault.exe
4628	WerFault.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972dN.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b82-1.dat	upx
behavioral2/memory/5032-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/5032-17-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972dN.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1368	5032	WerFault.exe	84
4628	5032	WerFault.exe	84

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	0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972dN.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5032	0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972dN.exe
5032	0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972dN.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5032	0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972dN.exe

C:\Users\Admin\AppData\Local\Temp\0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972dN.exe
"C:\Users\Admin\AppData\Local\Temp\0e62b43cfa9531fd391d097faf093eddd3902fdd6ed6b2953f3dd368e509972dN.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5032 -s 652
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:1368
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5032 -s 660
  2⤵
  - Loads dropped DLL
  - Program crash
  PID:4628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5032 -ip 5032
1⤵
- Loads dropped DLL
PID:3448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 5032 -ip 5032
1⤵
- Loads dropped DLL
PID:816

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Peripheral Device Discovery

Query Registry

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/5032-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/5032-5-0x0000000000BC1000-0x0000000000BC2000-memory.dmp

Filesize
4KB

Download
memory/5032-6-0x0000000000BC0000-0x0000000000EC5000-memory.dmp

Filesize
3.0MB

Download
memory/5032-15-0x0000000000BC0000-0x0000000000EC5000-memory.dmp

Filesize
3.0MB

Download
memory/5032-17-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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