remcos | 9d8522fac577756511fd093a7e4f5fd2732e33764b07237b13b770ae79bb9361

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-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
364	texture.exe
1116	texture.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1648 set thread context of 320	1648	teexture.exe	27
PID 364 set thread context of 1880	364	texture.exe	37
PID 1116 set thread context of 1664	1116	texture.exe	44

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
1352	schtasks.exe
960	schtasks.exe
1696	schtasks.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1648	teexture.exe
Token: 33	1648	teexture.exe
Token: SeIncBasePriorityPrivilege	1648	teexture.exe
Token: SeDebugPrivilege	364	texture.exe
Token: 33	364	texture.exe
Token: SeIncBasePriorityPrivilege	364	texture.exe
Token: SeDebugPrivilege	1116	texture.exe
Token: 33	1116	texture.exe
Token: SeIncBasePriorityPrivilege	1116	texture.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
320	AppLaunch.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 320	1648	teexture.exe	27
PID 1648 wrote to memory of 564	1648	teexture.exe	28
PID 1648 wrote to memory of 564	1648	teexture.exe	28
PID 1648 wrote to memory of 564	1648	teexture.exe	28
PID 1648 wrote to memory of 564	1648	teexture.exe	28
PID 1648 wrote to memory of 620	1648	teexture.exe	30
PID 1648 wrote to memory of 620	1648	teexture.exe	30
PID 1648 wrote to memory of 620	1648	teexture.exe	30
PID 1648 wrote to memory of 620	1648	teexture.exe	30
PID 564 wrote to memory of 960	564	cmd.exe	32
PID 564 wrote to memory of 960	564	cmd.exe	32
PID 564 wrote to memory of 960	564	cmd.exe	32
PID 564 wrote to memory of 960	564	cmd.exe	32
PID 1164 wrote to memory of 364	1164	taskeng.exe	34
PID 1164 wrote to memory of 364	1164	taskeng.exe	34
PID 1164 wrote to memory of 364	1164	taskeng.exe	34
PID 1164 wrote to memory of 364	1164	taskeng.exe	34
PID 1164 wrote to memory of 364	1164	taskeng.exe	34
PID 1164 wrote to memory of 364	1164	taskeng.exe	34
PID 1164 wrote to memory of 364	1164	taskeng.exe	34
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 1880	364	texture.exe	37
PID 364 wrote to memory of 2028	364	texture.exe	38
PID 364 wrote to memory of 2028	364	texture.exe	38
PID 364 wrote to memory of 2028	364	texture.exe	38
PID 364 wrote to memory of 2028	364	texture.exe	38
PID 364 wrote to memory of 1924	364	texture.exe	40
PID 364 wrote to memory of 1924	364	texture.exe	40
PID 364 wrote to memory of 1924	364	texture.exe	40
PID 364 wrote to memory of 1924	364	texture.exe	40
PID 2028 wrote to memory of 1696	2028	cmd.exe	42
PID 2028 wrote to memory of 1696	2028	cmd.exe	42
PID 2028 wrote to memory of 1696	2028	cmd.exe	42
PID 2028 wrote to memory of 1696	2028	cmd.exe	42
PID 1164 wrote to memory of 1116	1164	taskeng.exe	43

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:1648
- 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:320
- 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:564
- - 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:960
- 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:620

C:\Windows\system32\taskeng.exe
taskeng.exe {82007533-C33B-42AB-8618-FE7BD6A637B4} S-1-5-21-2329389628-4064185017-3901522362-1000:QSKGHMYQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1164
- C:\Users\Admin\AppData\Local\Temp\texture.exe
  C:\Users\Admin\AppData\Local\Temp\texture.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:364
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:1880
- - 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
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2028
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn "Nania" /tr "'C:\Users\Admin\AppData\Local\Temp\texture.exe'" /f
      4⤵
      Creates scheduled task(s)
      PID:1696
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\texture.exe" "C:\Users\Admin\AppData\Local\Temp\texture.exe"
    3⤵
    PID:1924
- C:\Users\Admin\AppData\Local\Temp\texture.exe
  C:\Users\Admin\AppData\Local\Temp\texture.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  PID:1116
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
    3⤵
    PID:1664
- - 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
    3⤵
    PID:1196
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn "Nania" /tr "'C:\Users\Admin\AppData\Local\Temp\texture.exe'" /f
      4⤵
      Creates scheduled task(s)
      PID:1352
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\texture.exe" "C:\Users\Admin\AppData\Local\Temp\texture.exe"
    3⤵
    PID:892

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/320-67-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/320-70-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/320-60-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/320-61-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/320-62-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/320-63-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/320-64-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/320-65-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/320-66-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/320-59-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/320-69-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/364-73-0x00000000002C0000-0x0000000000350000-memory.dmp

Download

memory/364-83-0x0000000001FA0000-0x0000000001FA1000-memory.dmp

Download

memory/1116-89-0x0000000000C70000-0x0000000000D00000-memory.dmp

Download

memory/1116-99-0x00000000048E0000-0x00000000048E1000-memory.dmp

Download

memory/1648-55-0x0000000000AA0000-0x0000000000B30000-memory.dmp

Download

memory/1648-58-0x00000000009D0000-0x00000000009D1000-memory.dmp

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memory/1648-57-0x0000000004AF0000-0x0000000004B68000-memory.dmp

Download

memory/1648-56-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Download

memory/1664-103-0x0000000000400000-0x000000000047B000-memory.dmp

Download

memory/1880-87-0x0000000000400000-0x000000000047B000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads