floxif | 02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66ab

Analysis

max time kernel
111s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
01-02-2025 23:31

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General

Target

02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe
Size

282KB
MD5

d923e476c90170d74a316b7907dedce0
SHA1

421b26eca8bcdb659061c50c8062daf9493fc6a3
SHA256

02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66ab
SHA512

45e5ae0bd640fac646e411a0eb7f579efee31b47c1d54ad6c44908ba34d0331bfa63ea695139dd31b095b0b0f594cf7b501e0944ea02b1cd6a845dab5c191e16
SSDEEP

6144:jyH7xOc6H5c6HcT66vlmNAwJ91FMB+UdvrEFp7hKG7GUYHA6ICFsNid5AvRUQYa:jaOrIvrEH7Z7GUJNidaRD

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
behavioral2/files/0x0008000000023c37-15.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0008000000023c37-15.dat	acprotect

Executes dropped EXE 3 IoCs

pid	Process
312	svchost.exe
1932	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe
1552	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
1932	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.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:	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0008000000023c37-15.dat	upx
behavioral2/memory/1932-17-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1932-28-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 40 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	svchost.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\java.exe	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javah.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	svchost.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\InspectorOfficeGadget.exe	svchost.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe	svchost.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\createdump.exe	svchost.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome_proxy.exe	svchost.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\notification_helper.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\Uninstall.exe	svchost.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe	svchost.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVShNotify.exe	svchost.exe
File created	C:\Program Files\Common Files\System\symsrv.dll	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\Source Engine\OSE.EXE	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\java-rmi.exe	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javap.exe	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jabswitch.exe	svchost.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\IntegratedOffice.exe	svchost.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe	svchost.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\chrome_pwa_launcher.exe	svchost.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\chrmstp.exe	svchost.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\setup.exe	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\extcheck.exe	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jar.exe	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javac.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.exe	svchost.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\MavInject32.exe	svchost.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome.exe	svchost.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\idlj.exe	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe	svchost.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeClickToRun.exe	svchost.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOInstaller.exe	svchost.exe
File opened for modification	C:\Program Files\dotnet\dotnet.exe	svchost.exe
File opened for modification	C:\Program Files\7-Zip\7zG.exe	svchost.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\OFFICE16\LICLUA.EXE	svchost.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javadoc.exe	svchost.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\svchost.exe	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1932	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe
1932	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1932	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 312	2376	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe	83
PID 2376 wrote to memory of 312	2376	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe	83
PID 2376 wrote to memory of 312	2376	02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe	83
PID 312 wrote to memory of 1932	312	svchost.exe	86
PID 312 wrote to memory of 1932	312	svchost.exe	86
PID 312 wrote to memory of 1932	312	svchost.exe	86

C:\Users\Admin\AppData\Local\Temp\02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe
"C:\Users\Admin\AppData\Local\Temp\02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\svchost.exe
  "C:\Windows\svchost.exe" "C:\Users\Admin\AppData\Local\Temp\02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:312
- - C:\Users\Admin\AppData\Local\Temp\02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe
    "C:\Users\Admin\AppData\Local\Temp\02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe"
    3⤵
    - Executes dropped EXE
    - 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:1932

C:\Windows\svchost.exe
C:\Windows\svchost.exe
1⤵
- Executes dropped EXE
- Drops file in Program Files directory
PID:1552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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
C:\Users\Admin\AppData\Local\Temp\02099a807dbc3d1eab94648de3a1c9ba4fe7945c7bf7c09295dc9abc2b1a66abN.exe

Filesize
246KB

MD5
beb6185dd8bde59b53be2f58c6e1b4e3

SHA1
de4117065caf620abea958add5f0e2da7c57b562

SHA256
7e817fbe49a7a005c5fb99b05eec8954355a86e05061cb3fd056464856a2b39a

SHA512
67fc4eb54df442d85414a1dbedfb0fb793e5738a579f792c90c3476793e18bbd2bd51d1059bd694192f703f06040e2913c3c3b802dd571447d437343c987166e

Download Submit
C:\Windows\svchost.exe

Filesize
35KB

MD5
9e3c13b6556d5636b745d3e466d47467

SHA1
2ac1c19e268c49bc508f83fe3d20f495deb3e538

SHA256
20af03add533a6870d524a7c4753b42bfceb56cddd46016c051e23581ba743f8

SHA512
5a07ba8a7fcb15f64b129fada2621252b8bc37eb34d4f614c075c064f8ac0d367301eba0c32c5e28b8aa633f6ab604f0dfcc363b34734ce0207ef0d4e8817c4b

Download Submit
memory/312-10-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1552-30-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1552-40-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1552-37-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1932-19-0x000000000040C000-0x000000000040F000-memory.dmp

Filesize
12KB

Download
memory/1932-28-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1932-29-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1932-25-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1932-17-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2376-4-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download