floxif | cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-12-2024 06:26

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General

Target

cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe
Size

1.8MB
MD5

83789676d0b0d067eed3f1a4508bcbd0
SHA1

ff36a97db30a1afbe191884b7a26ca26f2977ea0
SHA256

cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135
SHA512

65c54d193929a680fcadea6146a04056cf1f8b538f4003cb2ccd1ef8b8ec388aa6fd72b5b6f5c51023d49025c4f83bdc786e51bc6d5eff98661db4d2df373226
SSDEEP

24576:qm5ZEbzBQK8xIifw9/G/vqVrPEYGLcpoThM8wpIHQtMOt1eZpMzoJiC9TKHT6gL/:bDcivDrcaT+UMzL0TKz/LruJb/21qe

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
behavioral1/files/0x0007000000012118-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0007000000012118-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
3040	arp.exe
628	arp.exe
2424	arp.exe
1960	arp.exe
2392	arp.exe
1728	arp.exe
2928	arp.exe
2548	arp.exe
2516	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000012118-1.dat	upx
behavioral1/memory/2088-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/memory/2088-7-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe

System Location Discovery: System Language Discovery 1 TTPs 10 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	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	arp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.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 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 1728	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	30
PID 2088 wrote to memory of 1728	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	30
PID 2088 wrote to memory of 1728	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	30
PID 2088 wrote to memory of 1728	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	30
PID 2088 wrote to memory of 2928	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	32
PID 2088 wrote to memory of 2928	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	32
PID 2088 wrote to memory of 2928	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	32
PID 2088 wrote to memory of 2928	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	32
PID 2088 wrote to memory of 2548	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	33
PID 2088 wrote to memory of 2548	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	33
PID 2088 wrote to memory of 2548	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	33
PID 2088 wrote to memory of 2548	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	33
PID 2088 wrote to memory of 2516	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	35
PID 2088 wrote to memory of 2516	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	35
PID 2088 wrote to memory of 2516	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	35
PID 2088 wrote to memory of 2516	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	35
PID 2088 wrote to memory of 2392	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	37
PID 2088 wrote to memory of 2392	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	37
PID 2088 wrote to memory of 2392	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	37
PID 2088 wrote to memory of 2392	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	37
PID 2088 wrote to memory of 1960	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	39
PID 2088 wrote to memory of 1960	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	39
PID 2088 wrote to memory of 1960	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	39
PID 2088 wrote to memory of 1960	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	39
PID 2088 wrote to memory of 3040	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	41
PID 2088 wrote to memory of 3040	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	41
PID 2088 wrote to memory of 3040	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	41
PID 2088 wrote to memory of 3040	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	41
PID 2088 wrote to memory of 2424	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	43
PID 2088 wrote to memory of 2424	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	43
PID 2088 wrote to memory of 2424	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	43
PID 2088 wrote to memory of 2424	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	43
PID 2088 wrote to memory of 628	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	45
PID 2088 wrote to memory of 628	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	45
PID 2088 wrote to memory of 628	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	45
PID 2088 wrote to memory of 628	2088	cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe	45

C:\Users\Admin\AppData\Local\Temp\cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.exe
"C:\Users\Admin\AppData\Local\Temp\cb4ab51a4abe704e86fcf009b166c66fb07f13e0e25b38635a25076fefb92135N.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:2088
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:1728
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 42-49-cd-d9-2f-4b
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2928
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 d6-b5-1b-32-04-be
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\arp.exe
  arp -s 49.12.169.207 6f-6c-37-32-19-d7
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2516
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 ba-22-24-e0-88-2f
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2392
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 df-65-b7-2c-5e-6a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:1960
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 8c-72-d0-5d-fd-93
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3040
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 e2-bc-03-af-bd-6a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2424
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 e2-44-a5-78-06-2e
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

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
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
memory/2088-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2088-7-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2088-5-0x00000000008E0000-0x0000000000AAC000-memory.dmp

Filesize
1.8MB

Download