remcos | 997371c951144335618b3c5f4608afebf7688a58b6a95cdc71f237f2a7cc56a2

General

Target

17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.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 9 IoCs

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

resource	yara_rule
behavioral2/memory/2956-19-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2184-21-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3992-8-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2184-13-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3992-11-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2184-10-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2184-9-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2956-15-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3992-25-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 4 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2184-21-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2184-13-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2184-10-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2184-9-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3992-8-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3992-11-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3992-25-0x0000000000400000-0x0000000000478000-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-1-5-21-355097885-2402257403-2971294179-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4064 set thread context of 3992	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	82
PID 4064 set thread context of 2184	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	83
PID 4064 set thread context of 2956	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	84

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.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3992	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
3992	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
2956	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
2956	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
3992	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
3992	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2956	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 3992	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	82
PID 4064 wrote to memory of 3992	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	82
PID 4064 wrote to memory of 3992	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	82
PID 4064 wrote to memory of 2184	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	83
PID 4064 wrote to memory of 2184	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	83
PID 4064 wrote to memory of 2184	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	83
PID 4064 wrote to memory of 2956	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	84
PID 4064 wrote to memory of 2956	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	84
PID 4064 wrote to memory of 2956	4064	17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe	84

C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4064
- C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\ccttnxkjzrnipnjfzmnrgqzzgp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3992
- C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\fwydoqvlnzfnsuyjixisjdtqgwssu"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:2184
- C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17269374062ef5cc5f064187ae053742f15ea11eaf7fe116e75df3551c4709ce78e8f1419a932.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\pydwpigebhxscimvahumuigzpkcbnhge"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2956

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\ccttnxkjzrnipnjfzmnrgqzzgp

Filesize
4KB

MD5
a7e181f6aa185be0ab0ca68b30406fe6

SHA1
58c86162658dc609615b8b6400f85c92506dfdc8

SHA256
c3071dc55b94db225d9c0f2c1b21c7e8f27dbfd168b85b7d618d8d19950e7ff2

SHA512
49969eb10e0bf7925940eb7374451f811658ef9ccfb83b86fb337c4d06c3ba17eb0181f598d9e0ec9ca25bfaf644209ac47b73d62ac924e73d03a4dcf8f8dd0f

Download Submit
C:\Users\Admin\AppData\Local\Temp\notpad0\logs.dat

Filesize
144B

MD5
7e823803ae14c53371001ef170b0804e

SHA1
8586cf0ed6e1f358776e1ef023a1975b4624fb82

SHA256
9723895f5a90ab9e790f28f420352c5fb638d69fd1797338dfb3aa6d2c4a3cc4

SHA512
73028a4cccd004ce426026414b67a0b7a07a4d33eeb40cb55c082cae7844de138dfa83af1864e633eb1eea061c8c2056fe83ecbbcbb06ccde4806c28185a3ef5

Download Submit
memory/2184-13-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2184-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2184-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2184-9-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2184-21-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2184-10-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2956-15-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2956-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2956-5-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2956-20-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/2956-19-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3992-4-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3992-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3992-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3992-8-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3992-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4064-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4064-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4064-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4064-31-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4064-28-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4064-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4064-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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