remcos | fa7a8dde8997e3a40bca2128ef2d46254a40dba0baa78a675e4b881b7583054f

Analysis

max time kernel
180s
max time network
183s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-10-2024 14:30

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General

Target

12c18cd1ea269e5de23ad4a94d8c3b3b.exe
Size

121KB
MD5

12c18cd1ea269e5de23ad4a94d8c3b3b
SHA1

bff73ffd9c9806ae525e1cde0f415cd3a5103f38
SHA256

fa7a8dde8997e3a40bca2128ef2d46254a40dba0baa78a675e4b881b7583054f
SHA512

390c1ea942d7249e8b2ef22efd0261e0a55b9663abc5806e281f72e40effe1cf218a907ccc9e5acc3b449978ec2d7ec5d2a116cd713f9d60901f019d805cfb84
SSDEEP

3072:Myq9CdFY/haU5DPji+JKVnYejf+KyVflH:Rq0PY/haQOxnHT+KS

Score

10^/10

remcos zapato discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

ZAPATO

compu8883.con-ip.com:1836

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
najsjjjdjsjdkfgg-P7FLZT
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 4960 created 3436	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	56

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\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rnqezltwwlm = "C:\\Users\\Admin\\AppData\\Roaming\\Rnqezltwwlm.exe"	12c18cd1ea269e5de23ad4a94d8c3b3b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4960 set thread context of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86

System Location Discovery: System Language Discovery 1 TTPs 2 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	12c18cd1ea269e5de23ad4a94d8c3b3b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe
Token: SeDebugPrivilege	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2400	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86
PID 4960 wrote to memory of 2400	4960	12c18cd1ea269e5de23ad4a94d8c3b3b.exe	86

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3436
- C:\Users\Admin\AppData\Local\Temp\12c18cd1ea269e5de23ad4a94d8c3b3b.exe
  "C:\Users\Admin\AppData\Local\Temp\12c18cd1ea269e5de23ad4a94d8c3b3b.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4960
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
6cc6faac16c0b4ecc4a9195b128ca542

SHA1
11ddbe709cddbce9789a88811e84b79361796efb

SHA256
ab4035b8c2d00a6ecf93ed0b59f171ad67fc914ddfd2c58405757c7f8948e55f

SHA512
e8d1e0dc1feeec71b6b20177525909482abdff8a321d82e3f731ff0e44de06cb55b478388820c88234b9dabda337fa1d5230d2a9669d7004e4d1e78ca45df134

Download Submit
memory/2400-1099-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2400-1108-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-0-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/4960-1-0x0000000000D60000-0x0000000000D82000-memory.dmp

Filesize
136KB

Download
memory/4960-2-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4960-3-0x00000000059B0000-0x00000000059B6000-memory.dmp

Filesize
24KB

Download
memory/4960-4-0x00000000064C0000-0x00000000065DE000-memory.dmp

Filesize
1.1MB

Download
memory/4960-24-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-22-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-66-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-68-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-64-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-60-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-58-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-54-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-52-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-50-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-48-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-46-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-44-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-40-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-38-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-36-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-34-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-32-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-30-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-28-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-26-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-20-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-18-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-16-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-12-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-10-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-62-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-56-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-42-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-14-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-8-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-6-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-5-0x00000000064C0000-0x00000000065D8000-memory.dmp

Filesize
1.1MB

Download
memory/4960-1079-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4960-1081-0x0000000006910000-0x000000000695C000-memory.dmp

Filesize
304KB

Download
memory/4960-1080-0x0000000006830000-0x00000000068C8000-memory.dmp

Filesize
608KB

Download
memory/4960-1082-0x00000000071C0000-0x0000000007764000-memory.dmp

Filesize
5.6MB

Download
memory/4960-1083-0x00000000069A0000-0x00000000069F4000-memory.dmp

Filesize
336KB

Download
memory/4960-1088-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4960-1091-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4960-1090-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/4960-1089-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/4960-1100-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download