remcos | 98285bfa23f62cf1b41d1b69e201b55c105d662e2dd717b0722281a94c830935

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
25-08-2024 01:14

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General

Target

3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
Size

998KB
MD5

3dfaa19b28b0bf28e10d070e59256bf2
SHA1

fa85c2be5bebefa81a7b6d1c6ce4d3f67c134a97
SHA256

3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15
SHA512

acaa68698294c684acfbd2b6db4a5a1551588d1708f3870488a8c19d44784cbb0f85355e9f18b1dd530eec109720a79720d6f6f2f28b86a81d54fa66e3c1a834
SSDEEP

24576:gEC/qaSutZ+2gbrpVG2QDbtcPUUBIyHTTEbHkvszK:ViUutZAbrpVubGPRBIyHTuH

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

103.198.26.25:96

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-IPUJM4
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 6 IoCs

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

resource	yara_rule
behavioral1/memory/2900-42-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2608-49-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2764-47-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2900-43-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2900-54-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2764-58-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2764-47-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2764-58-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2900-42-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2900-43-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2900-54-0x0000000000400000-0x0000000000478000-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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2984 set thread context of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 1856 set thread context of 2900	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	34
PID 1856 set thread context of 2764	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	35
PID 1856 set thread context of 2608	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	36

System Location Discovery: System Language Discovery 1 TTPs 5 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	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
2900	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
2900	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
Token: SeDebugPrivilege	2608	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2984 wrote to memory of 1976	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	31
PID 2984 wrote to memory of 1976	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	31
PID 2984 wrote to memory of 1976	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	31
PID 2984 wrote to memory of 1976	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	31
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 2984 wrote to memory of 1856	2984	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	32
PID 1856 wrote to memory of 2900	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	34
PID 1856 wrote to memory of 2900	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	34
PID 1856 wrote to memory of 2900	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	34
PID 1856 wrote to memory of 2900	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	34
PID 1856 wrote to memory of 2900	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	34
PID 1856 wrote to memory of 2764	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	35
PID 1856 wrote to memory of 2764	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	35
PID 1856 wrote to memory of 2764	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	35
PID 1856 wrote to memory of 2764	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	35
PID 1856 wrote to memory of 2764	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	35
PID 1856 wrote to memory of 2608	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	36
PID 1856 wrote to memory of 2608	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	36
PID 1856 wrote to memory of 2608	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	36
PID 1856 wrote to memory of 2608	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	36
PID 1856 wrote to memory of 2608	1856	3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe	36

C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
"C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2984
- C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
  "C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe"
  2⤵
  PID:1976
- C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
  "C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1856
- - C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
    C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe /stext "C:\Users\Admin\AppData\Local\Temp\luxxhcqmmzbhwwnj"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2900
- - C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
    C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe /stext "C:\Users\Admin\AppData\Local\Temp\oodiivboihtlycbnofwe"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2764
- - C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe
    C:\Users\Admin\AppData\Local\Temp\3a4cfc46e94f08076d2ada85e0d51cf06695bfb54ad5f37c316c70d582839d15.exe /stext "C:\Users\Admin\AppData\Local\Temp\yqiainlhwplqiqxryqjyrbm"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\luxxhcqmmzbhwwnj

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/1856-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-70-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1856-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-10-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1856-62-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1856-63-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1856-59-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1856-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2608-48-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2608-46-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2608-49-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2764-44-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2764-58-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2764-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2764-40-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2764-47-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2900-34-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2900-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2900-43-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2900-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2900-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2900-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2984-2-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2984-3-0x0000000000580000-0x0000000000592000-memory.dmp

Filesize
72KB

Download
memory/2984-25-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2984-7-0x0000000004E30000-0x0000000004EF0000-memory.dmp

Filesize
768KB

Download
memory/2984-6-0x00000000005D0000-0x00000000005E0000-memory.dmp

Filesize
64KB

Download
memory/2984-5-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/2984-1-0x0000000000FC0000-0x00000000010BE000-memory.dmp

Filesize
1016KB

Download
memory/2984-4-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download
memory/2984-0-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download