floxif | eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540

Analysis

max time kernel
92s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 21:02

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General

Target

eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe
Size

1.5MB
MD5

e38e3cfb580112db5fbc88afb15f5760
SHA1

116b3b21defa61f7eb4907deced4bbd2be6236d1
SHA256

eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540
SHA512

ded170e7b74d577ed649d1bf0bf5f17daf94be93f86d40b9c67bbed563ac01927f1241df73585f123c1d425b95e8ef5b64c513b86388f29f90c936dd65a0fb22
SSDEEP

24576:OXt0xQyT35DR7tXrmbXTHnRIDDm58QtMOtDNf2DT9evfsGQUJYj3TxezWjP4MRGJ:bpVtX+VpQ9e1o3TsWjy1qQ

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/0x0009000000023cce-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/0x0009000000023cce-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2924	arp.exe
4108	arp.exe
2380	arp.exe
4876	arp.exe
1980	arp.exe
4292	arp.exe
216	arp.exe
3400	arp.exe
880	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0009000000023cce-1.dat	upx
behavioral2/memory/3108-4-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral2/memory/3108-24-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.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	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 2924	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	83
PID 3108 wrote to memory of 2924	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	83
PID 3108 wrote to memory of 2924	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	83
PID 3108 wrote to memory of 4108	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	85
PID 3108 wrote to memory of 4108	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	85
PID 3108 wrote to memory of 4108	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	85
PID 3108 wrote to memory of 4292	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	86
PID 3108 wrote to memory of 4292	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	86
PID 3108 wrote to memory of 4292	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	86
PID 3108 wrote to memory of 216	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	87
PID 3108 wrote to memory of 216	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	87
PID 3108 wrote to memory of 216	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	87
PID 3108 wrote to memory of 2380	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	88
PID 3108 wrote to memory of 2380	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	88
PID 3108 wrote to memory of 2380	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	88
PID 3108 wrote to memory of 4876	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	89
PID 3108 wrote to memory of 4876	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	89
PID 3108 wrote to memory of 4876	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	89
PID 3108 wrote to memory of 1980	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	90
PID 3108 wrote to memory of 1980	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	90
PID 3108 wrote to memory of 1980	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	90
PID 3108 wrote to memory of 3400	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	91
PID 3108 wrote to memory of 3400	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	91
PID 3108 wrote to memory of 3400	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	91
PID 3108 wrote to memory of 880	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	92
PID 3108 wrote to memory of 880	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	92
PID 3108 wrote to memory of 880	3108	eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe	92

C:\Users\Admin\AppData\Local\Temp\eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.exe
"C:\Users\Admin\AppData\Local\Temp\eabd9edb032503f7513c742ac9de8841177b9755b4403a09fa46c4d345eb9540N.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:3108
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2924
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 60-2b-cb-2f-8e-fe
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4108
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 6a-a7-c9-66-2d-ee
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4292
- C:\Windows\SysWOW64\arp.exe
  arp -s 136.243.76.21 24-85-39-b8-03-b7
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:216
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 a2-ef-fe-51-f6-f2
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 ed-45-2a-a6-43-a4
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:4876
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 77-1e-dc-b0-ec-3c
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:1980
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 3c-bc-92-4c-c1-c4
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:3400
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 83-4f-41-60-81-f8
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:880

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

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

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

Filesize
71KB

MD5
4fcd7574537cebec8e75b4e646996643

SHA1
efa59bb9050fb656b90d5d40c942fb2a304f2a8b

SHA256
8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

SHA512
7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

Download Submit
C:\Users\Admin\AppData\LocalLow\SogouPY.users\acc.dat.wtm

Filesize
80B

MD5
f4376e80219fdb809cc159d952992c83

SHA1
84c5fb99324ab445c228d2553f989aa6a814c264

SHA256
4520ae5f6179edf584c01b79c00a5a262ecdedb497b943dcc73ed0e9b7f7162b

SHA512
99ee69170c75d04973b0817579ce39b4de6df35398eeb648c7d4ef6dd60f0474d00684401535535b5aec4408fde0ac4c9cb338ac0d540ea1607d4eb70719c0c2

Download Submit
memory/3108-4-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/3108-21-0x0000000000011000-0x0000000000012000-memory.dmp

Filesize
4KB

Download
memory/3108-22-0x0000000000010000-0x0000000000180000-memory.dmp

Filesize
1.4MB

Download
memory/3108-24-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download