remcos | b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d

Analysis

max time kernel
153s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
17-05-2024 01:51

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General

Target

b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
Size

1.0MB
MD5

c0a2a67a65ca2de4bafa5b8d5aee0527
SHA1

db59b429d52a174f285bca3e648da12ce14e8eaa
SHA256

b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d
SHA512

ad7d436b3bef3aaa20dfb0cb8c904cf5fa0702360900bb9d0c747c49ab3d36c6bcb56d9daa39218b4f2326421f5ee1eb015daa4a92755cba5d6f9ee94492559b
SSDEEP

24576:ZvlIJSNI0eOcZdrQrJF3kkR82WkaiX3BZW9ngnFCDAcNep:pleaIi4QrWka2jXn/Z

Score

10^/10

remcos 76364 execution rat

Malware Config

Extracted

Family

remcos

Botnet

76364

103.150.8.12:5689

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-FF0K7G
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

detects Windows exceutables potentially bypassing UAC using eventvwr.exe 12 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4352-21-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-22-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-25-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-28-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-27-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-29-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-60-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-64-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-76-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-77-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-78-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/4352-79-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

1904 powershell.exe

pid	process
1904	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe

description	pid	process	target process
PID 1348 set thread context of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

4300 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exe

pid process

1904 powershell.exe
1904 powershell.exe
1904 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1904 powershell.exe

pid	process
4300	schtasks.exe

pid	process
1904	powershell.exe
1904	powershell.exe
1904	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1904	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe

C:\Users\Admin\AppData\Local\Temp\b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
"C:\Users\Admin\AppData\Local\Temp\b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eulqnm.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1904
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eulqnm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2A14.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4300
- C:\Users\Admin\AppData\Local\Temp\b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
  "C:\Users\Admin\AppData\Local\Temp\b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe"
  2⤵
  PID:4352

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 --no-appcompat-clear --mojo-platform-channel-handle=4060 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:4912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hd520vi5.d10.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2A14.tmp

Filesize
1KB

MD5
9c8634dbe861d6f9edfa3cf7e5dce364

SHA1
2210f0f754e57cccae160e74816ff94666821be3

SHA256
4f4a37cd18e4b8ad3fd446632fbaab3edf73873fa397fea256eef64053100fec

SHA512
c24ab47139f94ec9b523dba4006daa2da30c8e0775c1056468abfc1e09d59d4d16fdfe192da22ca3b818bae7fed940faad00e086d9efc7090f6f74ef0998517f

Download Submit
memory/1348-6-0x00000000052E0000-0x00000000052EA000-memory.dmp

Filesize
40KB

Download
memory/1348-3-0x0000000005300000-0x0000000005392000-memory.dmp

Filesize
584KB

Download
memory/1348-4-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/1348-5-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

Filesize
4KB

Download
memory/1348-2-0x00000000058B0000-0x0000000005E54000-memory.dmp

Filesize
5.6MB

Download
memory/1348-7-0x0000000005560000-0x000000000557E000-memory.dmp

Filesize
120KB

Download
memory/1348-8-0x0000000005620000-0x0000000005630000-memory.dmp

Filesize
64KB

Download
memory/1348-9-0x0000000007090000-0x000000000714E000-memory.dmp

Filesize
760KB

Download
memory/1348-10-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/1348-11-0x0000000009770000-0x000000000980C000-memory.dmp

Filesize
624KB

Download
memory/1348-1-0x00000000007D0000-0x00000000008DE000-memory.dmp

Filesize
1.1MB

Download
memory/1348-0-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

Filesize
4KB

Download
memory/1348-26-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/1904-31-0x0000000005E00000-0x0000000005E66000-memory.dmp

Filesize
408KB

Download
memory/1904-47-0x00000000716D0000-0x000000007171C000-memory.dmp

Filesize
304KB

Download
memory/1904-75-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/1904-71-0x0000000007C10000-0x0000000007C18000-memory.dmp

Filesize
32KB

Download
memory/1904-23-0x00000000055E0000-0x0000000005C08000-memory.dmp

Filesize
6.2MB

Download
memory/1904-70-0x0000000007C30000-0x0000000007C4A000-memory.dmp

Filesize
104KB

Download
memory/1904-18-0x0000000002C10000-0x0000000002C46000-memory.dmp

Filesize
216KB

Download
memory/1904-69-0x0000000007B30000-0x0000000007B44000-memory.dmp

Filesize
80KB

Download
memory/1904-68-0x0000000007B20000-0x0000000007B2E000-memory.dmp

Filesize
56KB

Download
memory/1904-67-0x0000000006C20000-0x0000000006C31000-memory.dmp

Filesize
68KB

Download
memory/1904-30-0x0000000005580000-0x00000000055A2000-memory.dmp

Filesize
136KB

Download
memory/1904-17-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/1904-32-0x0000000005FA0000-0x0000000006006000-memory.dmp

Filesize
408KB

Download
memory/1904-16-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/1904-42-0x0000000006140000-0x0000000006494000-memory.dmp

Filesize
3.3MB

Download
memory/1904-43-0x0000000005F50000-0x0000000005F6E000-memory.dmp

Filesize
120KB

Download
memory/1904-44-0x0000000006670000-0x00000000066BC000-memory.dmp

Filesize
304KB

Download
memory/1904-45-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/1904-46-0x0000000006BC0000-0x0000000006BF2000-memory.dmp

Filesize
200KB

Download
memory/1904-20-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/1904-57-0x0000000006B80000-0x0000000006B9E000-memory.dmp

Filesize
120KB

Download
memory/1904-58-0x00000000077F0000-0x0000000007893000-memory.dmp

Filesize
652KB

Download
memory/1904-59-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/1904-66-0x0000000007B70000-0x0000000007C06000-memory.dmp

Filesize
600KB

Download
memory/1904-61-0x0000000007F60000-0x00000000085DA000-memory.dmp

Filesize
6.5MB

Download
memory/1904-62-0x0000000007900000-0x000000000791A000-memory.dmp

Filesize
104KB

Download
memory/1904-63-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/1904-65-0x0000000007960000-0x000000000796A000-memory.dmp

Filesize
40KB

Download
memory/4352-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4352-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

description	pid	process	target process
PID 1348 wrote to memory of 1904	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	powershell.exe
PID 1348 wrote to memory of 1904	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	powershell.exe
PID 1348 wrote to memory of 1904	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	powershell.exe
PID 1348 wrote to memory of 4300	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	schtasks.exe
PID 1348 wrote to memory of 4300	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	schtasks.exe
PID 1348 wrote to memory of 4300	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	schtasks.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe
PID 1348 wrote to memory of 4352	1348	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe	b1801e102f5cb5dce9e2628bd80932a39bd57ff68d32c824ad4443f7bd00ea2d.exe