remcos | 37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2024 16:35

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General

Target

37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe
Size

7.6MB
MD5

e53cdd984882793c93d3e9a9822b4a10
SHA1

2767df7cea3b973476902cc74ccee829e5a4cbd9
SHA256

37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636
SHA512

84ebc1ac7ebb77c74c0d6d473482f1150128d817541ff771c466e0857894fb6839ed4b94bd7b4cdf11772e11556fa8311080ddbac84b0d588f5ef91b708c679d
SSDEEP

196608:kGCsGNI92Tb48i0AhQHNzcJ72Yie9TR7PHyA4pVMup0hB:kOsXTpid7rie9VeA4pVk

Score

10^/10

remcos build discovery rat

Malware Config

Extracted

Family

remcos

Botnet

build

193.29.13.204:5850

Attributes

audio_folder
??????????? ??????
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
true
install_flag
false
keylog_crypt
false
keylog_file
sys.dat
keylog_flag
false
keylog_folder
syslogs
keylog_path
%WinDir%
mouse_option
false
mutex
34534534534ffffsdfd-IPKJ16
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
?????????
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
Remcos family
remcos

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 3472 created 3484	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	56

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cvchost.vbs	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3472 set thread context of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\syslogs\sys.dat	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe

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	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe
Token: SeDebugPrivilege	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
764	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99
PID 3472 wrote to memory of 764	3472	37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe	99

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3484
- C:\Users\Admin\AppData\Local\Temp\37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe
  "C:\Users\Admin\AppData\Local\Temp\37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops startup file
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3472
- C:\Users\Admin\AppData\Local\Temp\37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe
  "C:\Users\Admin\AppData\Local\Temp\37e7b15bd9b8ace5fd0e0a61b942748c772c8892d4ea1a4b4769ee72a9021636.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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:\Windows\syslogs\sys.dat

Filesize
144B

MD5
68d5c284afa42320d8ef2402d1ed7512

SHA1
4dfe9bc66679cd3199f390e5a74c0f1dbde49488

SHA256
e21fea1dfeb4dc7ccce38215f273dff9833a328969d93caf04d19b914e2958f2

SHA512
26775ab378697b43f5d75ddb5f7e08c9acba05e7a884578e0a9c6f9202bd2cf92a72c4ec71bbb5de968d1d7d27daaddf9a4a3c20d9131cca49726fd32acdab4e

Download Submit
memory/764-1097-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/764-1107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3472-0-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/3472-1-0x0000000000590000-0x0000000000D2A000-memory.dmp

Filesize
7.6MB

Download
memory/3472-2-0x00000000056E0000-0x0000000005772000-memory.dmp

Filesize
584KB

Download
memory/3472-3-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3472-4-0x0000000005CE0000-0x0000000005E06000-memory.dmp

Filesize
1.1MB

Download
memory/3472-5-0x00000000064B0000-0x0000000006A54000-memory.dmp

Filesize
5.6MB

Download
memory/3472-17-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-23-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-59-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-69-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-67-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-65-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-63-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-61-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-57-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-55-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-53-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-51-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-49-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-47-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-45-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-41-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-39-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-37-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-35-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-31-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-27-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-21-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-19-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-15-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-13-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-11-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-9-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-43-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-33-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-29-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-25-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-7-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-6-0x0000000005CE0000-0x0000000005E00000-memory.dmp

Filesize
1.1MB

Download
memory/3472-1080-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3472-1081-0x0000000005FF0000-0x0000000006088000-memory.dmp

Filesize
608KB

Download
memory/3472-1082-0x0000000006090000-0x00000000060DC000-memory.dmp

Filesize
304KB

Download
memory/3472-1087-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3472-1086-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3472-1088-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3472-1089-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/3472-1090-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/3472-1091-0x0000000006290000-0x00000000062E4000-memory.dmp

Filesize
336KB

Download
memory/3472-1102-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download