floxif | 489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d

General

Target

489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe
Size

242KB
MD5

44845eb8c6725ac789eeb026c099f192
SHA1

804c15bf7cfcac9dc9d0acb82aaaceea72243f98
SHA256

489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d
SHA512

e3ef32ce4705e91e863f7d59ef3746c42c4b6420f9407a708bb61b3869e56ff9c8dd97618498978f1b608318075abe665c7044bf1f5d7178ddeffc973bc14076
SSDEEP

6144:wLwbXLFClSbrqsQvMRlkM4RD/qzMfUyL6:wMbbXQMRGM4h/qofn6

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/0x000a000000012033-1.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/0x000a000000012033-1.dat	acprotect

Loads dropped DLL 4 IoCs

pid	Process
2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe
1044	arp.exe
2220	arp.exe
2816	arp.exe

Network Service Discovery 1 TTPs 4 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
1044	arp.exe
2816	arp.exe
2696	arp.exe
2220	arp.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000a000000012033-1.dat	upx
behavioral1/memory/2160-3-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/1044-7-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2160-12-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/1044-9-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2220-14-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2816-16-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2816-20-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2220-19-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe
Token: SeDebugPrivilege	2220	arp.exe
Token: SeDebugPrivilege	2816	arp.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 1044	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	30
PID 2160 wrote to memory of 1044	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	30
PID 2160 wrote to memory of 1044	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	30
PID 2160 wrote to memory of 1044	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	30
PID 2160 wrote to memory of 2816	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	33
PID 2160 wrote to memory of 2816	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	33
PID 2160 wrote to memory of 2816	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	33
PID 2160 wrote to memory of 2816	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	33
PID 2160 wrote to memory of 2220	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	34
PID 2160 wrote to memory of 2220	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	34
PID 2160 wrote to memory of 2220	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	34
PID 2160 wrote to memory of 2220	2160	489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe	34

C:\Users\Admin\AppData\Local\Temp\489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe
"C:\Users\Admin\AppData\Local\Temp\489b1311db3ec6df3ac54525f2fde77eb5685703374fe88882676676a0c50b2d.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Loads dropped DLL
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:1044
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 39-3f-cd-45-52-3d
  2⤵
  - Loads dropped DLL
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2816
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 cd-6d-61-3d-26-10
  2⤵
  - Loads dropped DLL
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2220
- C:\Windows\SysWOW64\arp.exe
  arp -s 37.27.61.180 1b-ba-5b-43-58-4f
  2⤵
  - Network Service Discovery
  PID:2696

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

Network Service Discovery

1

T1046

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

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

Filesize
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/1044-7-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/1044-9-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2160-3-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2160-12-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2160-10-0x00000000013B0000-0x00000000013DA000-memory.dmp

Filesize
168KB

Download
memory/2220-14-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2220-19-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2816-16-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2816-20-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download

Analysis

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