remcos | 2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45

General

Target

2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe
Size

1.1MB
MD5

33bbd27a00b4160a844a7edf2efef84e
SHA1

c3f19d22898b690d4c98c59416c62ec6e54a39de
SHA256

2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45
SHA512

d4628cdae15273dc0863afa06153d202d8a61ed8d0f9e213c47f029016b81cad7d2d4dc3c115aefbff9c9d0ba6d74e3aa89f09d5fd6226eaa597f0e0328415b7
SSDEEP

24576:b6G5oq6WlY5EQJbBCt598PkfzGwWPEXyqr:bPQrJChIP1q

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

myumysmeetr.ddns.net:2404

mysweeterbk.ddns.net:2404

meetre1ms.freeddns.org:2404

bbhmeetre1ms.freeddns.org: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-TPT9X3
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

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 14 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1252-8-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-14-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-12-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-15-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-11-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-16-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-17-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-18-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-25-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-26-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-27-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-34-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-42-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/1252-43-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Duchpovs = "C:\\Users\\Public\\Duchpovs.url"	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

26 drive.google.com
28 drive.google.com

flow	ioc
26	drive.google.com
28	drive.google.com

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

Processes:

description	flow	ioc
HTTP User-Agent header	28	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	30	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe

pid	process
4820	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe
4820	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe

description	pid	process	target process
PID 4820 wrote to memory of 2392	4820	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	extrac32.exe
PID 4820 wrote to memory of 2392	4820	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	extrac32.exe
PID 4820 wrote to memory of 2392	4820	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	extrac32.exe
PID 4820 wrote to memory of 1252	4820	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	colorcpl.exe
PID 4820 wrote to memory of 1252	4820	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	colorcpl.exe
PID 4820 wrote to memory of 1252	4820	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	colorcpl.exe
PID 4820 wrote to memory of 1252	4820	2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe	colorcpl.exe

C:\Users\Admin\AppData\Local\Temp\2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe
"C:\Users\Admin\AppData\Local\Temp\2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Windows\SysWOW64\extrac32.exe
  C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\2c49f89d2a461bb32f9c50f8b37fb53b0f86294d4f03fb3e08588e979329fb45.exe C:\\Users\\Public\\Libraries\\Duchpovs.PIF
  2⤵
  PID:2392
- C:\Windows\SysWOW64\colorcpl.exe
  C:\Windows\System32\colorcpl.exe
  2⤵
  PID:1252

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
146B

MD5
cbefde444323d9422f54807aeb71d9cb

SHA1
576794958a4124c291e48f623ccf66efc90f5e1c

SHA256
cd16ff71865135ec0adf15964b1ffaec16a23b92a26d5fe4177b252c7dfd6814

SHA512
cfb199e260db0c5b14bc3382f11df557f14e9270f61a93b8bdd619320da255aa8471e2bc21cea2c120f3ce6e7a5bbd900e67451963386d18f0d32c5c59fe5d84

Download Submit
memory/1252-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-7-0x00000000050E0000-0x00000000060E0000-memory.dmp

Filesize
16.0MB

Download
memory/1252-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1252-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4820-1-0x0000000000400000-0x000000000051D000-memory.dmp

Filesize
1.1MB

Download
memory/4820-0-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads