floxif | b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
12-12-2024 07:19

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General

Target

b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe
Size

1.3MB
MD5

ebf6fdf0ca889437185d81df3c7c8734
SHA1

f47ca75a4d943180e58c40293d411db9f5e2769d
SHA256

b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf
SHA512

3e76576e0ce2860e2265ee567bfce7a69b0b5b7312786c81137fadcec509e7a081772b4639cbd4530271a8389711867121f7eecfc70479651a707f85a9471fda
SSDEEP

24576:Ws/66GbJFLBoVs9nIDak3ri91DcSF+oYPaBcrmMO4k5mBoMRGJ/qofV:WWADsbWgo/BwBvk5mBq1qM

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/0x000d00000001225f-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000d00000001225f-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe

Network Service Discovery 1 TTPs 9 IoCs

Attempt to gather information on host's network.

discovery

Network Service Discovery

T1046

pid	Process
2816	arp.exe
2248	arp.exe
2788	arp.exe
2564	arp.exe
2684	arp.exe
2928	arp.exe
2716	arp.exe
2888	arp.exe
2748	arp.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2668-3-0x0000000010000000-0x0000000010033000-memory.dmp	upx
behavioral1/files/0x000d00000001225f-1.dat	upx
behavioral1/memory/2668-10-0x0000000010000000-0x0000000010033000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.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	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.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 behavior: LoadsDriver 1 IoCs

pid	Process
472	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2928	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	30
PID 2668 wrote to memory of 2928	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	30
PID 2668 wrote to memory of 2928	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	30
PID 2668 wrote to memory of 2928	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	30
PID 2668 wrote to memory of 2716	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	32
PID 2668 wrote to memory of 2716	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	32
PID 2668 wrote to memory of 2716	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	32
PID 2668 wrote to memory of 2716	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	32
PID 2668 wrote to memory of 2684	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	33
PID 2668 wrote to memory of 2684	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	33
PID 2668 wrote to memory of 2684	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	33
PID 2668 wrote to memory of 2684	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	33
PID 2668 wrote to memory of 2564	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	34
PID 2668 wrote to memory of 2564	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	34
PID 2668 wrote to memory of 2564	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	34
PID 2668 wrote to memory of 2564	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	34
PID 2668 wrote to memory of 2248	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	35
PID 2668 wrote to memory of 2248	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	35
PID 2668 wrote to memory of 2248	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	35
PID 2668 wrote to memory of 2248	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	35
PID 2668 wrote to memory of 2816	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	36
PID 2668 wrote to memory of 2816	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	36
PID 2668 wrote to memory of 2816	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	36
PID 2668 wrote to memory of 2816	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	36
PID 2668 wrote to memory of 2788	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	38
PID 2668 wrote to memory of 2788	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	38
PID 2668 wrote to memory of 2788	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	38
PID 2668 wrote to memory of 2788	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	38
PID 2668 wrote to memory of 2888	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	40
PID 2668 wrote to memory of 2888	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	40
PID 2668 wrote to memory of 2888	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	40
PID 2668 wrote to memory of 2888	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	40
PID 2668 wrote to memory of 2748	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	43
PID 2668 wrote to memory of 2748	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	43
PID 2668 wrote to memory of 2748	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	43
PID 2668 wrote to memory of 2748	2668	b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe	43

C:\Users\Admin\AppData\Local\Temp\b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.exe
"C:\Users\Admin\AppData\Local\Temp\b22ad2a4ab1735b2fb6c800b52d1fbe9608698e2e749fbd028e5c4b8d6852ecf.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:2668
- C:\Windows\SysWOW64\arp.exe
  arp -a
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2928
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.0.1 c3-92-5f-17-55-60
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\arp.exe
  arp -s 10.127.255.255 50-bb-14-f9-51-ff
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\arp.exe
  arp -s 37.27.61.185 32-df-c3-c4-7a-9f
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2564
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.22 42-67-63-1c-63-76
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2248
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.251 94-2d-0b-f6-4a-b3
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\arp.exe
  arp -s 224.0.0.252 70-ae-0b-ba-8b-27
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\arp.exe
  arp -s 239.255.255.250 b9-5e-51-49-75-db
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2888
- C:\Windows\SysWOW64\arp.exe
  arp -s 255.255.255.255 bb-97-44-8f-ef-53
  2⤵
  - Network Service Discovery
  - System Location Discovery: System Language Discovery
  PID:2748

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/2668-3-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2668-10-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/2668-8-0x0000000000070000-0x00000000001A6000-memory.dmp

Filesize
1.2MB

Download