remcos | fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43

General

Target

fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
Size

483KB
MD5

e48b33738a13a98bef014ab19cbc0849
SHA1

35bd77e176afc9931421d34d627f4d9453ed83c6
SHA256

fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43
SHA512

a99a9bdaa083dac7d41b7e42073d7dd84efa8523af48bea85e33d6aaf09e1dbea609ad1d66a27287d499041cf17fdcd11db28c8f4c9e330a5dc7e23d35cd9e01
SSDEEP

6144:QTz+c6KHYBhDc1RGJPv//NkUn+N5Bkf/0TELRvIZPjbsAOZZXAXkcrHT4:QTlrYw1RU33NFn+N5WfIQIjbs/ZXkT4

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

ramcxx.duckdns.org:50312

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-M3P7YT
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

Detected Nirsoft tools 8 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/5060-16-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/5076-23-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/5076-28-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4112-21-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4112-18-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4112-15-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/5060-19-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/5060-32-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4112-21-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4112-18-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4112-15-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/5060-16-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/5060-19-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/5060-32-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4464 set thread context of 5060	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	89
PID 4464 set thread context of 4112	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	90
PID 4464 set thread context of 5076	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	91

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5060	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
5060	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
5076	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
5076	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
5060	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
5060	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5076	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4464 wrote to memory of 5060	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	89
PID 4464 wrote to memory of 5060	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	89
PID 4464 wrote to memory of 5060	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	89
PID 4464 wrote to memory of 4112	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	90
PID 4464 wrote to memory of 4112	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	90
PID 4464 wrote to memory of 4112	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	90
PID 4464 wrote to memory of 5076	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	91
PID 4464 wrote to memory of 5076	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	91
PID 4464 wrote to memory of 5076	4464	fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe	91

C:\Users\Admin\AppData\Local\Temp\fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
"C:\Users\Admin\AppData\Local\Temp\fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4464
- C:\Users\Admin\AppData\Local\Temp\fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
  C:\Users\Admin\AppData\Local\Temp\fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe /stext "C:\Users\Admin\AppData\Local\Temp\pvanreyvzmqfkrvt"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:5060
- C:\Users\Admin\AppData\Local\Temp\fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
  C:\Users\Admin\AppData\Local\Temp\fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe /stext "C:\Users\Admin\AppData\Local\Temp\zpgfrwixnuisvyjxwyj"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:4112
- C:\Users\Admin\AppData\Local\Temp\fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe
  C:\Users\Admin\AppData\Local\Temp\fbd8feb952fb3452131ddf54096bcb0c704a3e3f45177aade5751b3395a5bb43.exe /stext "C:\Users\Admin\AppData\Local\Temp\bjtqkptqbcaxxmfbnjwgrad"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
280b192a12c40ad8a24b5f9e917cbb1f

SHA1
40196af13d2930e1b008440d86a8f61e60957a48

SHA256
154c8368a50102766622cb454274efae8299ff7e7d10470a1cbecefdfa28cb24

SHA512
2dca37a4d2c5726e95e65d4324530325e6790a37987de82f1f1ef8bfeea180465f1b8ee2ffc9974de831b65ed13dbee7978d0b1b9a2a2e3e94948430035d44a8

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

Filesize
4KB

MD5
2538ec9e8425a905937573069b77d4c2

SHA1
ad0c2b7aff4382e23444d26adac96d9697b849f3

SHA256
29338949fae4c88a972837aae898529e4c7a2c4df35982eef2f8d7b602c17f4e

SHA512
a867a471b837b9c662528ee7a5904e8fe7b1eebb277b8a7fe4d4caf423fae914baf692bb5004c02ddb539b157d63326178467e28b03aa92a533cda19155d501c

Download Submit
memory/4112-21-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4112-14-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4112-9-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4112-15-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4112-18-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4464-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4464-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4464-39-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4464-38-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4464-35-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/5060-19-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5060-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5060-16-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5060-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5060-7-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5076-28-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5076-17-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5076-22-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5076-27-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/5076-23-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

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