remcos | 9e5ede8160535eae10bd05d831b9276301611620d7b82e38ea1c8d75edcbd7eb

Analysis

max time kernel
150s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
17/03/2022, 17:56

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General

Target
File.exe
Size 1.1MB
Sample220317-wh1yvsdee9
SHA256 9e5ede8160535eae10bd05d831b9276301611620d7b82e38ea1c8d75edcbd7eb
MD5 a884258f15c704dd04ac5c2fae9c8dca
SHA1 1f97f64ce8f8598523d429c4ef77c4fd437bfcab
SHA512 67e97e6d24e43d344a5c9171e9ea832278f2f6402f207b8cf6bde1a8c7978bbdb284d114bd29ed3282ad2afb5f78e3487ceab93cae0fba9cbfff9c95b0716b44
MD5 SHA1 SHA512

Score

10^/10

remcos xoftman collection persistence rat

Malware Config

Extracted

Family

remcos

Version

3.3.2 Pro

Botnet

xoftman

pandemic4u.awsmppl.com:2404
pandemic4u1.nerdpol.ovh:7782
pandemic4u2.awsmppl.com:2404
pandemic4u0.awsmppl.com:7782

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
remcos
keylog_path
%AppData%
mouse_option
false
mutex
xosftmn-SRVWAP
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

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1948-152-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral2/memory/1948-153-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4712-144-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4712-146-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 6 IoCs

resource	yara_rule
behavioral2/memory/4712-144-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4712-146-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4460-150-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4460-151-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1948-152-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/1948-153-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft

Remcos Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2688-138-0x00000000008C0000-0x000000000093B000-memory.dmp	Remcos

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	logagent.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Wdfflye = "C:\\Users\\Public\\eylffdW.url"	File.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2688 set thread context of 4712	2688	logagent.exe	81
PID 2688 set thread context of 4460	2688	logagent.exe	82
PID 2688 set thread context of 1948	2688	logagent.exe	83

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4712	logagent.exe
4712	logagent.exe
4460	logagent.exe
4460	logagent.exe
4712	logagent.exe
4712	logagent.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4460	logagent.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 1164 wrote to memory of 2688	1164	File.exe	80
PID 2688 wrote to memory of 4712	2688	logagent.exe	81
PID 2688 wrote to memory of 4712	2688	logagent.exe	81
PID 2688 wrote to memory of 4712	2688	logagent.exe	81
PID 2688 wrote to memory of 4712	2688	logagent.exe	81
PID 2688 wrote to memory of 4712	2688	logagent.exe	81
PID 2688 wrote to memory of 4712	2688	logagent.exe	81
PID 2688 wrote to memory of 4712	2688	logagent.exe	81
PID 2688 wrote to memory of 4712	2688	logagent.exe	81
PID 2688 wrote to memory of 4460	2688	logagent.exe	82
PID 2688 wrote to memory of 4460	2688	logagent.exe	82
PID 2688 wrote to memory of 4460	2688	logagent.exe	82
PID 2688 wrote to memory of 4460	2688	logagent.exe	82
PID 2688 wrote to memory of 4460	2688	logagent.exe	82
PID 2688 wrote to memory of 4460	2688	logagent.exe	82
PID 2688 wrote to memory of 4460	2688	logagent.exe	82
PID 2688 wrote to memory of 4460	2688	logagent.exe	82
PID 2688 wrote to memory of 1948	2688	logagent.exe	83
PID 2688 wrote to memory of 1948	2688	logagent.exe	83
PID 2688 wrote to memory of 1948	2688	logagent.exe	83
PID 2688 wrote to memory of 1948	2688	logagent.exe	83
PID 2688 wrote to memory of 1948	2688	logagent.exe	83
PID 2688 wrote to memory of 1948	2688	logagent.exe	83
PID 2688 wrote to memory of 1948	2688	logagent.exe	83
PID 2688 wrote to memory of 1948	2688	logagent.exe	83

C:\Users\Admin\AppData\Local\Temp\File.exe
"C:\Users\Admin\AppData\Local\Temp\File.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1164
- C:\Windows\SysWOW64\logagent.exe
  C:\Windows\System32\logagent.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2688
- - C:\Windows\SysWOW64\logagent.exe
    C:\Windows\SysWOW64\logagent.exe /stext "C:\Users\Admin\AppData\Local\Temp\hqmlblhayiqgdcvpufscyvnkcqblj"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:4712
- - C:\Windows\SysWOW64\logagent.exe
    C:\Windows\SysWOW64\logagent.exe /stext "C:\Users\Admin\AppData\Local\Temp\klzecdrcuqilnijtdqfwjaibcxlukpoo"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4460
- - C:\Windows\SysWOW64\logagent.exe
    C:\Windows\SysWOW64\logagent.exe /stext "C:\Users\Admin\AppData\Local\Temp\unfp"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1948

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1164-133-0x0000000003B86000-0x0000000003B87000-memory.dmp

Download

memory/1164-131-0x0000000000800000-0x0000000000801000-memory.dmp

Download

memory/1948-147-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/1948-153-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/1948-152-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/1948-149-0x0000000000400000-0x0000000000457000-memory.dmp

Download

memory/2688-137-0x0000000072600000-0x000000007267E000-memory.dmp

Download

memory/2688-136-0x0000000000370000-0x0000000000371000-memory.dmp

Download

memory/2688-135-0x0000000000610000-0x0000000000611000-memory.dmp

Download

memory/2688-134-0x0000000000350000-0x0000000000351000-memory.dmp

Download

memory/2688-138-0x00000000008C0000-0x000000000093B000-memory.dmp

Download

memory/4460-145-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/4460-150-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/4460-151-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/4460-141-0x0000000000400000-0x0000000000424000-memory.dmp

Download

memory/4712-146-0x0000000000400000-0x0000000000478000-memory.dmp

Download

memory/4712-144-0x0000000000400000-0x0000000000478000-memory.dmp

Download

memory/4712-142-0x0000000000400000-0x0000000000478000-memory.dmp

Download

memory/4712-139-0x0000000000400000-0x0000000000478000-memory.dmp

Download