remcos | 9d8522fac577756511fd093a7e4f5fd2732e33764b07237b13b770ae79bb9361

Analysis

max time kernel
152s
max time network
154s
platform
windows10_x64
resource
win10-en-20211208
submitted
27/01/2022, 15:04

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General

Target
teexture.exe
Size 1024KB
Sample220127-sflvdaeehp
SHA256 9d8522fac577756511fd093a7e4f5fd2732e33764b07237b13b770ae79bb9361
MD5 484b0fbe9dcf3de6026aa52b3f26aadf
SHA1 53f6c84d89a923127927091d5b0b212845b68f6e
SHA512 f0ddb4d865ae383b697c9899977b25eb811c409c3afaa9f00cc1bd8031b24b28947bb52fc8a0fe43432e72ea3b2ce3d909dde26d1dba16691813b995d75e680a
MD5 SHA1 SHA512

Score

10^/10

remcos ff-fg rat

Malware Config

Extracted

Family

remcos

Version

3.3.2 Pro

Botnet

FF-FG

issacc.duckdns.org:30288

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
sms-audio
keylog_path
%AppData%
mouse_option
false
mutex
medi-re4vgt-R8LRUI
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
1012	texture.exe
3736	texture.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2776 set thread context of 2892	2776	teexture.exe	68
PID 1012 set thread context of 376	1012	texture.exe	77
PID 3736 set thread context of 1784	3736	texture.exe	84

Creates scheduled task(s) 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2392	schtasks.exe
1332	schtasks.exe
2680	schtasks.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2776	teexture.exe
Token: 33	2776	teexture.exe
Token: SeIncBasePriorityPrivilege	2776	teexture.exe
Token: SeDebugPrivilege	1012	texture.exe
Token: 33	1012	texture.exe
Token: SeIncBasePriorityPrivilege	1012	texture.exe
Token: SeDebugPrivilege	3736	texture.exe
Token: 33	3736	texture.exe
Token: SeIncBasePriorityPrivilege	3736	texture.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2892	AppLaunch.exe

Suspicious use of WriteProcessMemory 63 IoCs

description	pid	Process	procid_target
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 2892	2776	teexture.exe	68
PID 2776 wrote to memory of 4084	2776	teexture.exe	69
PID 2776 wrote to memory of 4084	2776	teexture.exe	69
PID 2776 wrote to memory of 4084	2776	teexture.exe	69
PID 2776 wrote to memory of 2136	2776	teexture.exe	71
PID 2776 wrote to memory of 2136	2776	teexture.exe	71
PID 2776 wrote to memory of 2136	2776	teexture.exe	71
PID 4084 wrote to memory of 1332	4084	cmd.exe	73
PID 4084 wrote to memory of 1332	4084	cmd.exe	73
PID 4084 wrote to memory of 1332	4084	cmd.exe	73
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 376	1012	texture.exe	77
PID 1012 wrote to memory of 3228	1012	texture.exe	78
PID 1012 wrote to memory of 3228	1012	texture.exe	78
PID 1012 wrote to memory of 3228	1012	texture.exe	78
PID 1012 wrote to memory of 3324	1012	texture.exe	79
PID 1012 wrote to memory of 3324	1012	texture.exe	79
PID 1012 wrote to memory of 3324	1012	texture.exe	79
PID 3228 wrote to memory of 2680	3228	cmd.exe	82
PID 3228 wrote to memory of 2680	3228	cmd.exe	82
PID 3228 wrote to memory of 2680	3228	cmd.exe	82
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 1784	3736	texture.exe	84
PID 3736 wrote to memory of 2296	3736	texture.exe	86
PID 3736 wrote to memory of 2296	3736	texture.exe	86
PID 3736 wrote to memory of 2296	3736	texture.exe	86
PID 3736 wrote to memory of 3244	3736	texture.exe	87
PID 3736 wrote to memory of 3244	3736	texture.exe	87
PID 3736 wrote to memory of 3244	3736	texture.exe	87
PID 2296 wrote to memory of 2392	2296	cmd.exe	90
PID 2296 wrote to memory of 2392	2296	cmd.exe	90
PID 2296 wrote to memory of 2392	2296	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\teexture.exe
"C:\Users\Admin\AppData\Local\Temp\teexture.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2776
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2892
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nania" /tr "'C:\Users\Admin\AppData\Local\Temp\texture.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4084
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nania" /tr "'C:\Users\Admin\AppData\Local\Temp\texture.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:1332
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\teexture.exe" "C:\Users\Admin\AppData\Local\Temp\texture.exe"
  2⤵
  PID:2136

C:\Users\Admin\AppData\Local\Temp\texture.exe
C:\Users\Admin\AppData\Local\Temp\texture.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1012
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  PID:376
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nania" /tr "'C:\Users\Admin\AppData\Local\Temp\texture.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3228
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nania" /tr "'C:\Users\Admin\AppData\Local\Temp\texture.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:2680
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\texture.exe" "C:\Users\Admin\AppData\Local\Temp\texture.exe"
  2⤵
  PID:3324

C:\Users\Admin\AppData\Local\Temp\texture.exe
C:\Users\Admin\AppData\Local\Temp\texture.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3736
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  PID:1784
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nania" /tr "'C:\Users\Admin\AppData\Local\Temp\texture.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2296
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nania" /tr "'C:\Users\Admin\AppData\Local\Temp\texture.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:2392
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\texture.exe" "C:\Users\Admin\AppData\Local\Temp\texture.exe"
  2⤵
  PID:3244

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/376-129-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/1012-125-0x00000000052D0000-0x00000000052D1000-memory.dmp

Download

memory/1784-136-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/2776-118-0x0000000004B20000-0x0000000004B21000-memory.dmp

Download

memory/2776-115-0x00000000002B0000-0x0000000000340000-memory.dmp

Download

memory/2776-117-0x0000000004DE0000-0x0000000004E58000-memory.dmp

Download

memory/2776-116-0x0000000005030000-0x000000000552E000-memory.dmp

Download

memory/2892-122-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/2892-119-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/3736-132-0x00000000056D0000-0x0000000005711000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads