remcos | 0bd1748c9bcb7917b74f51af9953d5da9aa53f6e6525dd60cc0d50a221cc54aa

Analysis

max time kernel
151s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
18/08/2023, 10:31

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General

Target

tmp.exe
Size

930KB
MD5

d7e7e73ea8759c18b068a1eeb155975a
SHA1

8f1bf0c0d3fa45598a638ad0abd717be7ab1efaa
SHA256

0bd1748c9bcb7917b74f51af9953d5da9aa53f6e6525dd60cc0d50a221cc54aa
SHA512

82e699055f2d0c75702f07a40dd70347781c87c905124dbba1bbead8139695247697388b36c5a503389dc3ed8463e033108a7ae767e0fabf9ebea708203c5825
SSDEEP

12288:H7mHFFD9GRxjnJfgcuEdhoqVF1N0eF0bWWk++IY8g53aN1qQLAfAV3W:bmXkRNJrD1N0eF0/k+fY8URxA

Score

10^/10

remcos remotehost rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

134.195.139.194:2404

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
Rmc-F82W83
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

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3840-171-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral2/memory/3840-173-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4392-167-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4392-182-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 6 IoCs

resource	yara_rule
behavioral2/memory/3840-171-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/3840-173-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/4392-167-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4544-179-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4544-180-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4392-182-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2616 set thread context of 4688	2616	tmp.exe	91
PID 4688 set thread context of 4392	4688	tmp.exe	92
PID 4688 set thread context of 3840	4688	tmp.exe	93
PID 4688 set thread context of 4544	4688	tmp.exe	94

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2616	tmp.exe
2616	tmp.exe
4392	tmp.exe
4392	tmp.exe
4544	tmp.exe
4544	tmp.exe
4392	tmp.exe
4392	tmp.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4688	tmp.exe
4688	tmp.exe
4688	tmp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2616	tmp.exe
Token: SeDebugPrivilege	4544	tmp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4688	tmp.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2616 wrote to memory of 3952	2616	tmp.exe	90
PID 2616 wrote to memory of 3952	2616	tmp.exe	90
PID 2616 wrote to memory of 3952	2616	tmp.exe	90
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 2616 wrote to memory of 4688	2616	tmp.exe	91
PID 4688 wrote to memory of 4392	4688	tmp.exe	92
PID 4688 wrote to memory of 4392	4688	tmp.exe	92
PID 4688 wrote to memory of 4392	4688	tmp.exe	92
PID 4688 wrote to memory of 4392	4688	tmp.exe	92
PID 4688 wrote to memory of 3840	4688	tmp.exe	93
PID 4688 wrote to memory of 3840	4688	tmp.exe	93
PID 4688 wrote to memory of 3840	4688	tmp.exe	93
PID 4688 wrote to memory of 3840	4688	tmp.exe	93
PID 4688 wrote to memory of 4544	4688	tmp.exe	94
PID 4688 wrote to memory of 4544	4688	tmp.exe	94
PID 4688 wrote to memory of 4544	4688	tmp.exe	94
PID 4688 wrote to memory of 4544	4688	tmp.exe	94

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
  2⤵
  PID:3952
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4688
- - C:\Users\Admin\AppData\Local\Temp\tmp.exe
    C:\Users\Admin\AppData\Local\Temp\tmp.exe /stext "C:\Users\Admin\AppData\Local\Temp\yxwcwxbavocywccjorghusaeihtwun"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4392
- - C:\Users\Admin\AppData\Local\Temp\tmp.exe
    C:\Users\Admin\AppData\Local\Temp\tmp.exe /stext "C:\Users\Admin\AppData\Local\Temp\isbnwqmbjwudziqnfctifxumjolfnyucrq"
    3⤵
    PID:3840
- - C:\Users\Admin\AppData\Local\Temp\tmp.exe
    C:\Users\Admin\AppData\Local\Temp\tmp.exe /stext "C:\Users\Admin\AppData\Local\Temp\suofxi"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
0be71b5980b6fc994222b5e743ecc244

SHA1
2f804f1f3289a21e0f23bddfdf214da49448d20c

SHA256
95cde8b98db353b4ce649434ead05b3a7c967dc32529bf05739d8d5b133ec729

SHA512
ea4c45089afcd172ec25f28241ff3be28d5e6cf1787a39561611486d68dbfd3cb11edb231448ceeff6443f8f88a9869603b3b937aa33d272dc724d79a31767c9

Download Submit
C:\Users\Admin\AppData\Local\Temp\yxwcwxbavocywccjorghusaeihtwun

Filesize
4KB

MD5
3a76b7ef67ef3e8e1f6224d8d1dfd6f6

SHA1
91ab70d5235504d9382187d324d105e0ec9f18b6

SHA256
b4e6c48d47450b4a7860837a4af913ea8d8080ae0f34b8328388c209181592cf

SHA512
6040e0c4cb75632c8b131e6d130e8a5b8e265502500648bcd0af2919c1cbcafe0d0967e0141ab3768f8e1d6b3579914a20374139cd51065214da93753f07e0c3

Download Submit
memory/2616-134-0x0000000000470000-0x000000000055E000-memory.dmp

Filesize
952KB

Download
memory/2616-133-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/2616-135-0x0000000005510000-0x0000000005AB4000-memory.dmp

Filesize
5.6MB

Download
memory/2616-136-0x0000000005000000-0x0000000005092000-memory.dmp

Filesize
584KB

Download
memory/2616-137-0x00000000051B0000-0x00000000051C0000-memory.dmp

Filesize
64KB

Download
memory/2616-138-0x0000000004F70000-0x0000000004F7A000-memory.dmp

Filesize
40KB

Download
memory/2616-139-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/2616-140-0x00000000051B0000-0x00000000051C0000-memory.dmp

Filesize
64KB

Download
memory/2616-141-0x000000000A730000-0x000000000A7CC000-memory.dmp

Filesize
624KB

Download
memory/2616-146-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/3840-168-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3840-162-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3840-173-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3840-170-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3840-171-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/4392-182-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4392-164-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4392-167-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4392-159-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4544-180-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4544-179-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4544-177-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4544-169-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4688-147-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-144-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-161-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-158-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-156-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-155-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-154-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-153-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-152-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-151-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-150-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-148-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-145-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-163-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-184-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4688-188-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4688-187-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4688-189-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-191-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-193-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4688-142-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-198-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-199-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-206-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-207-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-214-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4688-215-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download