remcos | 79f3f61ce35754dd4a5f3f94297af6c529671f27215af4eac1b0a71807b9e615

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
17-05-2024 01:37

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General

Target

PO 738900.exe
Size

1.1MB
MD5

a4df734fada4dec0bebcbbbed4e083ab
SHA1

283763090c6af71ef60d76b4515c9edebd416bcf
SHA256

e0d74fa44286f3a4c4c4c2fc151a339f487c2af644fb9691016dcf057b3bd343
SHA512

914b580fefa91d948a256c2f2ab39b18f36f631e7ff9c387888334521221466814af45bde59b59420c8eb6f22d0808afc6e27f3b562d5c495ab8b8a7666af637
SSDEEP

24576:bOp3fxqwcD01FUKer5zdzDarNhrBAJhDdiGXck5WZ7XZeLBmWlo:bOZOqbeDsBixy7XZsblo

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 18 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2368-39-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-38-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-33-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-34-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-32-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-68-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-69-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-70-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-71-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-72-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-73-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-74-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-75-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-76-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-77-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-78-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-79-0x0000000000400000-0x000000000047F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
behavioral2/memory/2368-80-0x0000000000400000-0x000000000047F000-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

4580 powershell.exe

pid	process
4580	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:

PO 738900.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	PO 738900.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PO 738900.exe

description pid process target process

PID 2740 set thread context of 2368 2740 PO 738900.exe PO 738900.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

2180 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exe

pid process

4580 powershell.exe
4580 powershell.exe
4580 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 4580 powershell.exe

description	pid	process	target process
PID 2740 set thread context of 2368	2740	PO 738900.exe	PO 738900.exe

pid	process
2180	schtasks.exe

pid	process
4580	powershell.exe
4580	powershell.exe
4580	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4580	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

PO 738900.exe

description	pid	process	target process
PID 2740 wrote to memory of 4580	2740	PO 738900.exe	powershell.exe
PID 2740 wrote to memory of 4580	2740	PO 738900.exe	powershell.exe
PID 2740 wrote to memory of 4580	2740	PO 738900.exe	powershell.exe
PID 2740 wrote to memory of 2180	2740	PO 738900.exe	schtasks.exe
PID 2740 wrote to memory of 2180	2740	PO 738900.exe	schtasks.exe
PID 2740 wrote to memory of 2180	2740	PO 738900.exe	schtasks.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe
PID 2740 wrote to memory of 2368	2740	PO 738900.exe	PO 738900.exe

C:\Users\Admin\AppData\Local\Temp\PO 738900.exe
"C:\Users\Admin\AppData\Local\Temp\PO 738900.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tkoOXvlkbwis.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4580
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tkoOXvlkbwis" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1028.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2180
- C:\Users\Admin\AppData\Local\Temp\PO 738900.exe
  "C:\Users\Admin\AppData\Local\Temp\PO 738900.exe"
  2⤵
  PID:2368

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 --field-trial-handle=4612,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=1304 /prefetch:8
1⤵
PID:3944

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cndcrx5s.1n5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1028.tmp

Filesize
1KB

MD5
1a5c0ae723ed5219bcae7edf028c9af6

SHA1
4feaa06eec56dd8a63cea7365c56f7ea63793acf

SHA256
101c69cd15adc1ad3808d8b78e074174dd8c5bc36df332b52bacba80f508fe5f

SHA512
c7e20e26b330d85bd1239e42d362d2d06dc62d4d53f1324a291a741f5240eed21b9739b225fe345043c11b1bc1ca5df9d73fa1804472ff57782abe6870e27694

Download Submit
memory/2368-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2368-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2740-10-0x00000000094F0000-0x000000000958C000-memory.dmp

Filesize
624KB

Download
memory/2740-40-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/2740-4-0x0000000005590000-0x000000000559A000-memory.dmp

Filesize
40KB

Download
memory/2740-2-0x00000000055B0000-0x0000000005642000-memory.dmp

Filesize
584KB

Download
memory/2740-3-0x0000000005C00000-0x00000000061A4000-memory.dmp

Filesize
5.6MB

Download
memory/2740-9-0x0000000006E50000-0x0000000006F0E000-memory.dmp

Filesize
760KB

Download
memory/2740-8-0x0000000005BF0000-0x0000000005C00000-memory.dmp

Filesize
64KB

Download
memory/2740-7-0x0000000005930000-0x000000000594E000-memory.dmp

Filesize
120KB

Download
memory/2740-0-0x0000000074B7E000-0x0000000074B7F000-memory.dmp

Filesize
4KB

Download
memory/2740-6-0x0000000006C20000-0x0000000006D00000-memory.dmp

Filesize
896KB

Download
memory/2740-5-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/2740-1-0x0000000000A80000-0x0000000000B98000-memory.dmp

Filesize
1.1MB

Download
memory/4580-42-0x0000000005F70000-0x0000000005FBC000-memory.dmp

Filesize
304KB

Download
memory/4580-56-0x0000000007840000-0x0000000007EBA000-memory.dmp

Filesize
6.5MB

Download
memory/4580-57-0x0000000007200000-0x000000000721A000-memory.dmp

Filesize
104KB

Download
memory/4580-58-0x0000000007270000-0x000000000727A000-memory.dmp

Filesize
40KB

Download
memory/4580-59-0x0000000007480000-0x0000000007516000-memory.dmp

Filesize
600KB

Download
memory/4580-60-0x0000000007400000-0x0000000007411000-memory.dmp

Filesize
68KB

Download
memory/4580-61-0x0000000007430000-0x000000000743E000-memory.dmp

Filesize
56KB

Download
memory/4580-62-0x0000000007440000-0x0000000007454000-memory.dmp

Filesize
80KB

Download
memory/4580-63-0x0000000007540000-0x000000000755A000-memory.dmp

Filesize
104KB

Download
memory/4580-64-0x0000000007520000-0x0000000007528000-memory.dmp

Filesize
32KB

Download
memory/4580-67-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4580-55-0x00000000070D0000-0x0000000007173000-memory.dmp

Filesize
652KB

Download
memory/4580-54-0x00000000064E0000-0x00000000064FE000-memory.dmp

Filesize
120KB

Download
memory/4580-43-0x0000000006490000-0x00000000064C2000-memory.dmp

Filesize
200KB

Download
memory/4580-44-0x0000000075400000-0x000000007544C000-memory.dmp

Filesize
304KB

Download
memory/4580-41-0x0000000005ED0000-0x0000000005EEE000-memory.dmp

Filesize
120KB

Download
memory/4580-19-0x0000000004E20000-0x0000000004E42000-memory.dmp

Filesize
136KB

Download
memory/4580-35-0x00000000058C0000-0x0000000005C14000-memory.dmp

Filesize
3.3MB

Download
memory/4580-22-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4580-20-0x0000000004ED0000-0x0000000004F36000-memory.dmp

Filesize
408KB

Download
memory/4580-21-0x0000000004F40000-0x0000000004FA6000-memory.dmp

Filesize
408KB

Download
memory/4580-17-0x0000000005190000-0x00000000057B8000-memory.dmp

Filesize
6.2MB

Download
memory/4580-16-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4580-15-0x00000000025C0000-0x00000000025F6000-memory.dmp

Filesize
216KB

Download