remcos | 997371c951144335618b3c5f4608afebf7688a58b6a95cdc71f237f2a7cc56a2

General

Target

17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
Size

483KB
MD5

b0b179cb58814287051a3933455c382e
SHA1

23bb06299fe32cc15786f9b79c22e5d7af50802a
SHA256

997371c951144335618b3c5f4608afebf7688a58b6a95cdc71f237f2a7cc56a2
SHA512

6c0c6fbd544517b05e17cdd15e64698df5683b51a9fc79dfe51e18c62202d2d45626ba41e6c9b7b7ae507ce474c948f501971815afa6accc81b4268afafb11c9
SSDEEP

6144:RTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZmAX4crgWT4:RTlrYw1RUh3NFn+N5WfIQIjbs/ZmgT4

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

maxert.wemnbbsweoipmngbyutrdcunbgrtjeroendns.pro:6845

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
notpad0
keylog_path
%Temp%
mouse_option
false
mutex
Rmc-EPF38I
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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 8 IoCs

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

resource	yara_rule
behavioral2/memory/400-19-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/400-25-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4088-16-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4088-13-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4088-9-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3520-8-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3520-14-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3520-27-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4088-16-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4088-13-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4088-9-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3520-8-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3520-14-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3520-27-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Reads user/profile data of web browsers 2 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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1528 set thread context of 3520	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	86
PID 1528 set thread context of 4088	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	87
PID 1528 set thread context of 400	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	88

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	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3520	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
3520	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
400	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
400	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
3520	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
3520	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	400	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 3520	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	86
PID 1528 wrote to memory of 3520	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	86
PID 1528 wrote to memory of 3520	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	86
PID 1528 wrote to memory of 4088	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	87
PID 1528 wrote to memory of 4088	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	87
PID 1528 wrote to memory of 4088	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	87
PID 1528 wrote to memory of 400	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	88
PID 1528 wrote to memory of 400	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	88
PID 1528 wrote to memory of 400	1528	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe	88

C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
"C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
  C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\ygnskyqvbtdijzdbeepihjyztyivn"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3520
- C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
  C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\iasckqbwxbvnufznnpcbsotqcmswhtta"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:4088
- C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe
  C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.datdecoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\tdyv"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:400

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:\Users\Admin\AppData\Local\Temp\notpad0\logs.dat

Filesize
144B

MD5
9d6e2bf7ee22d8e5e3a53667e79319e8

SHA1
5240ae85682adeb230a5f0d7985d42d399707a6d

SHA256
43b371842cf7375ef09b5ce081f9df7ab6072c2b1b0034bbcc26c259f0e0d583

SHA512
2984349280ec98aab1ee71a647dd52e3507177cc9c46ce19368d62f1088c63dc1bd34477c39d964098792e1692f69b0e491da9e5ed7b38cb87397421e84529b7

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

Filesize
4KB

MD5
8b8277c8f03c24d1f290dbe476e961d2

SHA1
2e13baf3a4b708277d550dc3dd1e0f99b131f78e

SHA256
9af6881f6dbffba028a7a977f4c0a43c764f840332986993ad66de7b816c2f9e

SHA512
7367a0236cd0d6cd731caf1ba1f4ea8f851ea1018a9c6b49db6e9d13b2aaba92767774da9169481918e4287021ff5c3a58c3143eaa5e7fe9fa88383208615948

Download Submit
memory/400-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/400-12-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/400-19-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/400-23-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/400-25-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/400-17-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1528-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1528-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1528-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1528-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1528-34-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1528-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1528-30-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3520-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3520-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3520-2-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3520-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3520-8-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4088-16-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4088-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4088-13-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4088-9-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4088-4-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

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