remcos | 97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e

Analysis

max time kernel
147s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11-09-2024 08:01

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General

Target

97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
Size

1000KB
MD5

e40b8b94d50a94e1a977b766526740cd
SHA1

ab8b2ed6e3c074595a4a78a29eb81507ab86ca78
SHA256

97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e
SHA512

8da6ab901390460882456e3f05df1026a8797afe084f52b43dcfc7509d8d1840e5b95cb9b0f52b2ad87a95f8a10537083403ee3dc7e3d6e5379f2804e79284f7
SSDEEP

24576:W/Jdk1BuaI9SJ3vfWj2oTDp53PbY+gO38vozGSkmoZGfXGS:Sdk3wG3+TDp53E/Ocoyzmo8+S

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

103.67.162.213:2435

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-72ZA9Y
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/3484-42-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3484-46-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4184-41-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2396-40-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3484-39-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4184-34-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2396-35-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2396-54-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4184-41-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4184-34-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2396-40-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2396-35-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2396-54-0x0000000000400000-0x0000000000478000-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-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 244 set thread context of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 1936 set thread context of 2396	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	103
PID 1936 set thread context of 4184	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	104
PID 1936 set thread context of 3484	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	105

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	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
2396	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
2396	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
3484	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
3484	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
2396	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
2396	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3484	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 244 wrote to memory of 1936	244	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	101
PID 1936 wrote to memory of 2396	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	103
PID 1936 wrote to memory of 2396	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	103
PID 1936 wrote to memory of 2396	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	103
PID 1936 wrote to memory of 2396	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	103
PID 1936 wrote to memory of 4184	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	104
PID 1936 wrote to memory of 4184	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	104
PID 1936 wrote to memory of 4184	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	104
PID 1936 wrote to memory of 4184	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	104
PID 1936 wrote to memory of 3484	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	105
PID 1936 wrote to memory of 3484	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	105
PID 1936 wrote to memory of 3484	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	105
PID 1936 wrote to memory of 3484	1936	97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe	105

C:\Users\Admin\AppData\Local\Temp\97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
"C:\Users\Admin\AppData\Local\Temp\97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:244
- C:\Users\Admin\AppData\Local\Temp\97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
  "C:\Users\Admin\AppData\Local\Temp\97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1936
- - C:\Users\Admin\AppData\Local\Temp\97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
    C:\Users\Admin\AppData\Local\Temp\97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe /stext "C:\Users\Admin\AppData\Local\Temp\zprnmbqfrueodzkgplqvdxowsbas"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2396
- - C:\Users\Admin\AppData\Local\Temp\97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
    C:\Users\Admin\AppData\Local\Temp\97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe /stext "C:\Users\Admin\AppData\Local\Temp\brxxntahfcxtffykgwlxobbnspsbecj"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:4184
- - C:\Users\Admin\AppData\Local\Temp\97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe
    C:\Users\Admin\AppData\Local\Temp\97b88b4e7564ac9d9ec3de83fe3af3de499842cb6ccc80a30273b75e0d32e73e.exe /stext "C:\Users\Admin\AppData\Local\Temp\lmcqomlabkpgpluwpgyyqowwbwccxnhikb"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3484

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4076,i,12198811467968044966,17227406646827438786,262144 --variations-seed-version --mojo-platform-channel-handle=4328 /prefetch:8
1⤵
PID:1672

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\zprnmbqfrueodzkgplqvdxowsbas

Filesize
4KB

MD5
cda83eba5a004554ccdc061fd3df499c

SHA1
58ff2ecb9d47be10335e104896c87c62dc328523

SHA256
e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

SHA512
f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

Download Submit
memory/244-6-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/244-2-0x0000000005530000-0x0000000005AD4000-memory.dmp

Filesize
5.6MB

Download
memory/244-3-0x0000000005020000-0x00000000050B2000-memory.dmp

Filesize
584KB

Download
memory/244-4-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/244-5-0x0000000004FE0000-0x0000000004FEA000-memory.dmp

Filesize
40KB

Download
memory/244-17-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/244-7-0x000000007447E000-0x000000007447F000-memory.dmp

Filesize
4KB

Download
memory/244-8-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/244-9-0x0000000006560000-0x0000000006620000-memory.dmp

Filesize
768KB

Download
memory/244-10-0x000000000A3C0000-0x000000000A45C000-memory.dmp

Filesize
624KB

Download
memory/244-0-0x000000007447E000-0x000000007447F000-memory.dmp

Filesize
4KB

Download
memory/244-1-0x00000000004F0000-0x00000000005EE000-memory.dmp

Filesize
1016KB

Download
memory/1936-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-69-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-68-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-67-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-65-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1936-59-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1936-60-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1936-56-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2396-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2396-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2396-31-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2396-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2396-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3484-39-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3484-38-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3484-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3484-46-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3484-42-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4184-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4184-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4184-30-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4184-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download