remcos | 00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2024 15:48

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General

Target

00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe
Size

1.0MB
MD5

b29b16ebb9b0e72685abcb3d1bb10ecb
SHA1

0447f64739d8b3ff0f1eaa9f8a33ac4bf5a83b9e
SHA256

00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9
SHA512

11caef5f251c76848cb02b9c7a4a4bd070fabcca11b5dc5b65e8e4c74b3ac1618fd775712a4a839324713d538d935dc6afc9767c2990bed1736448cd43d1419c
SSDEEP

24576:nEFEYFTBWob0zYtxuPjwx6EEsRId90km:EFxFISxUwDRE9T

Score

10^/10

remcos 8846455 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

8846455

windowsoctarem.duckdns.org:56892

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
4765-HH3V0S
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
Remcos family
remcos

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

pid	Process
1088	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4592 set thread context of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91

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

System Information Discovery
T1082

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	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4388	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1088	powershell.exe
1088	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1088	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 1088	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	87
PID 4592 wrote to memory of 1088	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	87
PID 4592 wrote to memory of 1088	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	87
PID 4592 wrote to memory of 4388	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	89
PID 4592 wrote to memory of 4388	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	89
PID 4592 wrote to memory of 4388	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	89
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91
PID 4592 wrote to memory of 4124	4592	00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe	91

C:\Users\Admin\AppData\Local\Temp\00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe
"C:\Users\Admin\AppData\Local\Temp\00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4592
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zkCXHdkRhSWE.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1088
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zkCXHdkRhSWE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpED00.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4388
- C:\Users\Admin\AppData\Local\Temp\00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe
  "C:\Users\Admin\AppData\Local\Temp\00a87ff3c6352b93575ed9b1122a9c77750c2b31e9ee4051e518c582a83b26a9.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_opwkoufw.wl5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpED00.tmp

Filesize
1KB

MD5
3a4624a9fa3d2b016449e5286fb1881f

SHA1
1c98d947b36d9a0e797183f990043b3adec71adf

SHA256
a18b2255009262e7ab0afd1f292525e066f6e43123c8d67ef9f36c61297a486d

SHA512
08ae24272a4fa2a20978cf31de1542c1ef672d2a903e50c680f2f03a3c3939fcc6efd22ffbf4c7316649b7119b4d9f1ad434a19c893506ab6349ce22ff39ce8a

Download Submit
memory/1088-63-0x0000000007C70000-0x0000000007C81000-memory.dmp

Filesize
68KB

Download
memory/1088-67-0x0000000007D90000-0x0000000007D98000-memory.dmp

Filesize
32KB

Download
memory/1088-57-0x0000000007920000-0x00000000079C3000-memory.dmp

Filesize
652KB

Download
memory/1088-64-0x0000000007CA0000-0x0000000007CAE000-memory.dmp

Filesize
56KB

Download
memory/1088-56-0x0000000006D00000-0x0000000006D1E000-memory.dmp

Filesize
120KB

Download
memory/1088-61-0x0000000007CF0000-0x0000000007D86000-memory.dmp

Filesize
600KB

Download
memory/1088-60-0x0000000007AE0000-0x0000000007AEA000-memory.dmp

Filesize
40KB

Download
memory/1088-23-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/1088-58-0x00000000080B0000-0x000000000872A000-memory.dmp

Filesize
6.5MB

Download
memory/1088-15-0x0000000005170000-0x00000000051A6000-memory.dmp

Filesize
216KB

Download
memory/1088-71-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/1088-17-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/1088-65-0x0000000007CB0000-0x0000000007CC4000-memory.dmp

Filesize
80KB

Download
memory/1088-66-0x0000000007DB0000-0x0000000007DCA000-memory.dmp

Filesize
104KB

Download
memory/1088-59-0x0000000007A70000-0x0000000007A8A000-memory.dmp

Filesize
104KB

Download
memory/1088-46-0x0000000071B20000-0x0000000071B6C000-memory.dmp

Filesize
304KB

Download
memory/1088-45-0x00000000076E0000-0x0000000007712000-memory.dmp

Filesize
200KB

Download
memory/1088-25-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/1088-43-0x0000000006C50000-0x0000000006C9C000-memory.dmp

Filesize
304KB

Download
memory/1088-19-0x00000000058B0000-0x0000000005ED8000-memory.dmp

Filesize
6.2MB

Download
memory/1088-28-0x0000000005780000-0x00000000057A2000-memory.dmp

Filesize
136KB

Download
memory/1088-42-0x0000000006730000-0x000000000674E000-memory.dmp

Filesize
120KB

Download
memory/1088-30-0x00000000060F0000-0x0000000006156000-memory.dmp

Filesize
408KB

Download
memory/1088-38-0x0000000006160000-0x00000000064B4000-memory.dmp

Filesize
3.3MB

Download
memory/1088-29-0x0000000005FD0000-0x0000000006036000-memory.dmp

Filesize
408KB

Download
memory/4124-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-90-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-128-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-127-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-126-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-125-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-124-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-123-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-122-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-121-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-120-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-119-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-118-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-117-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-84-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-85-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-86-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-87-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-88-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-89-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-91-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-92-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-93-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-97-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-98-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-101-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-104-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-105-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-106-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-107-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-108-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-109-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-110-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-111-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-112-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-113-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-114-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-115-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-116-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4592-0-0x000000007533E000-0x000000007533F000-memory.dmp

Filesize
4KB

Download
memory/4592-1-0x00000000001C0000-0x00000000002CC000-memory.dmp

Filesize
1.0MB

Download
memory/4592-2-0x0000000005360000-0x0000000005904000-memory.dmp

Filesize
5.6MB

Download
memory/4592-3-0x0000000004CA0000-0x0000000004D32000-memory.dmp

Filesize
584KB

Download
memory/4592-4-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/4592-5-0x0000000004D60000-0x0000000004D6A000-memory.dmp

Filesize
40KB

Download
memory/4592-6-0x0000000005070000-0x0000000005088000-memory.dmp

Filesize
96KB

Download
memory/4592-7-0x000000007533E000-0x000000007533F000-memory.dmp

Filesize
4KB

Download
memory/4592-8-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/4592-9-0x0000000007710000-0x00000000077CE000-memory.dmp

Filesize
760KB

Download
memory/4592-10-0x0000000009EF0000-0x0000000009F8C000-memory.dmp

Filesize
624KB

Download
memory/4592-27-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download