ratonrat | 7f3a7641d612fa3dc1ff06d44c1afef026cc1114647784d5ab5962a2e1d7d85a

Analysis

user interaction
yes
max time kernel
64s
max time network
63s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
31/07/2026, 04:03

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General

Target
Sigma.exe
Size 594KB
Sample260731-emb2vscd44
SHA256 7f3a7641d612fa3dc1ff06d44c1afef026cc1114647784d5ab5962a2e1d7d85a
MD5 572049d77563b8abe50ab0c97e0d9c0e
SHA1 586cc5a7dae0c02e39f86878ced4b2141c6f6da1
SHA512 e2fb6172ea0b49c7512e54c395e3e2e30304945be3d02a25149a05ca55f35620a0b99d58e7ddd0cf44a59a534c6727ff742e5cae86504ae359398c78e00844d3
SSDEEP 12288:oBaR3374rIkzE7tnXknXQaBFJi4RkTAJ0MK86WoLb66OPfD9piIRBa:dL4kkA7lXkXDDuAOFhWSApij
TLSH
T186D40204B7FC3715EABE8B3E5DF190480F76B2935A20E21C5D83D0A91675B829924FB7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

costura defense_evasion execution ratonrat packer persistence stealer

Malware Config

Extracted

Family

ratonrat

Version

Free

zdohjup5bv.localto.net:2947

Mutex

j9vA63rTtuXs8nfbbRnD24q

Attributes

assist
true
box
false
box_icon
No icon
box_msg
Hello, i'm the description of your raton client message box
box_title
Hello, im a title for your message box
defender
true
delay
0
hide_file
true
open_website
false
process_critical
true
raw
silly21
reconnect
3
startup
true
tag
Infected
uac
true
vm
false
website
https://t.me/sillyisafed

Signatures

Family: RatonRAT
RatonRAT is an information stealer written in C#.
stealer ratonrat

Detects RatonRAT payload 2 IoCs

resource	yara_rule
behavioral1/memory/3004-0-0x00000242B6750000-0x00000242B67EA000-memory.dmp	family_ratonrat
behavioral1/files/0x001b00000002b3c0-10.dat	family_ratonrat

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3112	powershell.exe
3112	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
4552	Sigma.exe
1636	Sigma.exe

Costura .NET executable packer 1 IoCs

Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.

costura packer

resource	yara_rule
behavioral1/files/0x001b00000002b3c0-10.dat	costura

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4244	cmd.exe

Delays execution with timeout.exe 2 IoCs

defense_evasion

pid	Process
3204	timeout.exe
3480	timeout.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
4316	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3112	powershell.exe
3112	powershell.exe
4552	Sigma.exe
4552	Sigma.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4552	Sigma.exe
Token: SeDebugPrivilege	4552	Sigma.exe
Token: SeDebugPrivilege	3112	powershell.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 4244	3004	Sigma.exe	81
PID 4244 wrote to memory of 2112	4244	cmd.exe	83
PID 4244 wrote to memory of 3204	4244	cmd.exe	84
PID 4244 wrote to memory of 4552	4244	cmd.exe	85
PID 4244 wrote to memory of 3480	4244	cmd.exe	86
PID 4552 wrote to memory of 4316	4552	Sigma.exe	87
PID 4552 wrote to memory of 3112	4552	Sigma.exe	91

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\Sigma.exe
"C:\Users\Admin\AppData\Local\Temp\Sigma.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Temp\cleanup_4I12IADTnArvpqTRO9yd990O8C3cAO.bat""
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4244
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2112
- - C:\Windows\system32\timeout.exe
    timeout /t 2 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:3204
- - C:\Users\Admin\AppData\Roaming\PlatformRuntime\Sigma.exe
    "C:\Users\Admin\AppData\Roaming\PlatformRuntime\Sigma.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4552
  - - C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Sigma" /sc ONLOGON /tr "\"C:\Users\Admin\AppData\Roaming\PlatformRuntime\Sigma.exe\"" /rl HIGHEST /f
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:4316
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -NonInteractive -WindowStyle Hidden -ExecutionPolicy Bypass "Add-MpPreference -ExclusionProcess 'C:\Users\Admin\AppData\Roaming\PlatformRuntime\Sigma.exe'"
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3112
- - C:\Windows\system32\timeout.exe
    timeout /t 1 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:3480

C:\Users\Admin\AppData\Roaming\PlatformRuntime\Sigma.exe
"C:\Users\Admin\AppData\Roaming\PlatformRuntime\Sigma.exe"
1⤵
- Executes dropped EXE
PID:1636

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Windows Command Shell

T1059.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Sigma.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Sigma.exe.log
Size 859B
SHA256 a6f7d3892a001df1aafe2eaf221a3b09a4fdad23ad642a62b9cc50fd25f9415f
MD5 b80ab36515c0740685e38a5cd01e292a
SHA1 ebea40ce14021888f2c869576ad62b98b7c73c8a
SHA512 a9ad31c000c2264f8a9b7bac6bc60edd7ecf0d1c946a4bb3e57d824283c6b65e59344e834bcbf563586211078ddb895af13e4c697bea2c4a907982bbc5fbd4a0
TLSH
T1CE1166313376A0D889163F821C1E56C957BF4329A550AD08B998624DED3601B6B213E3
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_1novi1sj.nsc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1novi1sj.nsc.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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Sigma.exe

Path C:\Users\Admin\AppData\Roaming\PlatformRuntime\Sigma.exe
Size 594KB
SHA256 7f3a7641d612fa3dc1ff06d44c1afef026cc1114647784d5ab5962a2e1d7d85a
MD5 572049d77563b8abe50ab0c97e0d9c0e
SHA1 586cc5a7dae0c02e39f86878ced4b2141c6f6da1
SHA512 e2fb6172ea0b49c7512e54c395e3e2e30304945be3d02a25149a05ca55f35620a0b99d58e7ddd0cf44a59a534c6727ff742e5cae86504ae359398c78e00844d3
SSDEEP 12288:oBaR3374rIkzE7tnXknXQaBFJi4RkTAJ0MK86WoLb66OPfD9piIRBa:dL4kkA7lXkXDDuAOFhWSApij
TLSH
T186D40204B7FC3715EABE8B3E5DF190480F76B2935A20E21C5D83D0A91675B829924FB7
MD5 SHA1 SHA512 SSDEEP TLSH

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cleanup_4I12IADTnArvpqTRO9yd990O8C3cAO.bat

Path C:\Users\Admin\AppData\Roaming\Temp\cleanup_4I12IADTnArvpqTRO9yd990O8C3cAO.bat
Size 522B
SHA256 d23f1bf96405800130e13eee080b3ba89da7b2f4452de55d09b492f83635784f
MD5 e0272ab9568a003c16822a92c72c3b30
SHA1 425854373aefa962db42bee05bf923a01bb1501b
SHA512 5271796158346bcb1f9434aee82b03131866d532a5b80ce37cc9e31a174326cc537fdfaf108c17f488a26f94df7b3e5cd1dbfd9464b7b116e1defd7c73ff7fd0
TLSH
T174F05906228FC709541060770EBB31CCC0D9449B3F887642BF18C41E17A205FE6C7BD1
MD5 SHA1 SHA512 TLSH

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memory/3004-0-0x00000242B6750000-0x00000242B67EA000-memory.dmp

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memory/3004-1-0x00000242D0CB0000-0x00000242D0CC0000-memory.dmp

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memory/3004-2-0x00000242B83C0000-0x00000242B83CA000-memory.dmp

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memory/3112-33-0x000001DF775F0000-0x000001DF775FA000-memory.dmp

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memory/3112-36-0x000001DF785D0000-0x000001DF785EA000-memory.dmp

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memory/3112-39-0x000001DF785C0000-0x000001DF785CA000-memory.dmp

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memory/3112-38-0x000001DF785B0000-0x000001DF785B6000-memory.dmp

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memory/3112-32-0x000001DF784F0000-0x000001DF785A3000-memory.dmp

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memory/3112-31-0x000001DF77600000-0x000001DF7761C000-memory.dmp

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memory/3112-24-0x000001DF774A0000-0x000001DF774C2000-memory.dmp

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memory/3112-37-0x000001DF77630000-0x000001DF77638000-memory.dmp

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memory/3112-34-0x000001DF77640000-0x000001DF7765C000-memory.dmp

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memory/3112-35-0x000001DF77620000-0x000001DF7762A000-memory.dmp

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memory/4552-16-0x0000018CBE320000-0x0000018CBE32A000-memory.dmp

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memory/4552-17-0x0000018CD7BB0000-0x0000018CD7F7C000-memory.dmp

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memory/4552-13-0x0000018CD6B80000-0x0000018CD6B90000-memory.dmp

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memory/4552-15-0x0000018CD6B80000-0x0000018CD6B90000-memory.dmp

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