remcos | 8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8

Analysis

max time kernel
150s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12/11/2024, 17:39

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General

Target

8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
Size

1.0MB
MD5

b1da0bd777067ca89b28fc4adc81a483
SHA1

47af480b6704e2c61ae2e24060fbe86d3971c176
SHA256

8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8
SHA512

68ef2a70ba4f74f69d7bf47d76c92dbcf70261bc64b1569561662afaa90ca5d4119c97e7589cb0d857ad986d2ef3ff334ed02d230a529f79a5c9c8d9e761689f
SSDEEP

24576:Mg/fQ/hv309BvUDV2xogQA3O0jO0biPeX+Y5PTwCPiqLa:zAF303vUDESA+0jO0BOY58C5La

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

www.caampass.com:5577

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-RPV3M2
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
Remcos family
remcos

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1552	powershell.exe
2984	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	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2848 set thread context of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100

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 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	powershell.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	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.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
456	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
1552	powershell.exe
2984	powershell.exe
2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
1552	powershell.exe
2984	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
Token: SeDebugPrivilege	1552	powershell.exe
Token: SeDebugPrivilege	2984	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3628	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 1552	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	94
PID 2848 wrote to memory of 1552	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	94
PID 2848 wrote to memory of 1552	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	94
PID 2848 wrote to memory of 2984	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	96
PID 2848 wrote to memory of 2984	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	96
PID 2848 wrote to memory of 2984	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	96
PID 2848 wrote to memory of 456	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	98
PID 2848 wrote to memory of 456	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	98
PID 2848 wrote to memory of 456	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	98
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100
PID 2848 wrote to memory of 3628	2848	8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe	100

C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
"C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1552
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eJhvEJDc.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2984
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eJhvEJDc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE09C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:456
- C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe
  "C:\Users\Admin\AppData\Local\Temp\8fd7b8dd8031bba418ae41089854aeba5cf9ee3a171d2cc8db05d95b692b83c8.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3628

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

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
80616f768bd28aae855a398cb95810f0

SHA1
0cfa07b66f3badfb4b8bb0cd330913df9bfd0ef6

SHA256
354c43471ff6ef0ae1029b5380ded1dddd64b6bbfdc5232a48c47039949efd1a

SHA512
975a939c998f24710245ba3884a54fb207cee6596f783909c607ad656cdb8418dff95f30f5d4292b6e93ee601802ce4313a6354df83878114c8066e76895e17d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
1133c1e8a23c5e88eeec16daaaeb3ff3

SHA1
e0abe2c1a74ae1224b9cd98b1f975f83abd04071

SHA256
1f1759fa7b87b72a568fb9f347cdb378299a64a9e3173ec0cc5bc8ccb173295b

SHA512
90073692f315e62ddb6282625e7da5f887c72364b4f0b9d3e696b505d9b83760b99bc6949e01ddd7675d3df489804b61a6206e4327895699d14ac77fd72ea8ff

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_julnmi12.woh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE09C.tmp

Filesize
1KB

MD5
43cd15c66b0490efe906455ff7124be3

SHA1
51e30ecc6d27970a82cc9fd7c664398bf6f25b64

SHA256
efa7a1e8b6b4ef566e09446e5b7c946d7382805cf8529f6aa65d751793fb0a1f

SHA512
9020aee1173b58218d0b8f97bde6129c0b485621f221a1024846fbcfaa0b3385a4284819ed23b0ae9ae245b4838f64b6eeaab6016cf83296ccef9ee2845d1a31

Download Submit
memory/1552-54-0x0000000006170000-0x00000000061BC000-memory.dmp

Filesize
304KB

Download
memory/1552-90-0x0000000007200000-0x000000000721A000-memory.dmp

Filesize
104KB

Download
memory/1552-97-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/1552-89-0x0000000007100000-0x0000000007114000-memory.dmp

Filesize
80KB

Download
memory/1552-87-0x00000000070C0000-0x00000000070D1000-memory.dmp

Filesize
68KB

Download
memory/1552-86-0x0000000007140000-0x00000000071D6000-memory.dmp

Filesize
600KB

Download
memory/1552-83-0x0000000007510000-0x0000000007B8A000-memory.dmp

Filesize
6.5MB

Download
memory/1552-15-0x00000000045F0000-0x0000000004626000-memory.dmp

Filesize
216KB

Download
memory/1552-16-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/1552-17-0x0000000004DD0000-0x00000000053F8000-memory.dmp

Filesize
6.2MB

Download
memory/1552-18-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/1552-82-0x0000000006BD0000-0x0000000006C73000-memory.dmp

Filesize
652KB

Download
memory/1552-20-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/1552-71-0x0000000072F00000-0x0000000072F4C000-memory.dmp

Filesize
304KB

Download
memory/1552-84-0x0000000006EC0000-0x0000000006EDA000-memory.dmp

Filesize
104KB

Download
memory/1552-36-0x0000000005400000-0x0000000005422000-memory.dmp

Filesize
136KB

Download
memory/1552-38-0x0000000005510000-0x0000000005576000-memory.dmp

Filesize
408KB

Download
memory/1552-53-0x0000000005BA0000-0x0000000005BBE000-memory.dmp

Filesize
120KB

Download
memory/1552-45-0x0000000005580000-0x00000000058D4000-memory.dmp

Filesize
3.3MB

Download
memory/1552-37-0x00000000054A0000-0x0000000005506000-memory.dmp

Filesize
408KB

Download
memory/2848-6-0x0000000005C10000-0x0000000005CAC000-memory.dmp

Filesize
624KB

Download
memory/2848-3-0x00000000058E0000-0x0000000005972000-memory.dmp

Filesize
584KB

Download
memory/2848-1-0x0000000000D80000-0x0000000000E8C000-memory.dmp

Filesize
1.0MB

Download
memory/2848-5-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/2848-2-0x0000000005F60000-0x0000000006504000-memory.dmp

Filesize
5.6MB

Download
memory/2848-8-0x000000007443E000-0x000000007443F000-memory.dmp

Filesize
4KB

Download
memory/2848-0-0x000000007443E000-0x000000007443F000-memory.dmp

Filesize
4KB

Download
memory/2848-51-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/2848-9-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/2848-7-0x0000000005F40000-0x0000000005F5C000-memory.dmp

Filesize
112KB

Download
memory/2848-10-0x000000000AFE0000-0x000000000B0A0000-memory.dmp

Filesize
768KB

Download
memory/2848-4-0x0000000005880000-0x000000000588A000-memory.dmp

Filesize
40KB

Download
memory/2984-21-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/2984-80-0x00000000071B0000-0x00000000071CE000-memory.dmp

Filesize
120KB

Download
memory/2984-61-0x0000000072F00000-0x0000000072F4C000-memory.dmp

Filesize
304KB

Download
memory/2984-60-0x00000000071D0000-0x0000000007202000-memory.dmp

Filesize
200KB

Download
memory/2984-85-0x00000000075F0000-0x00000000075FA000-memory.dmp

Filesize
40KB

Download
memory/2984-88-0x00000000077B0000-0x00000000077BE000-memory.dmp

Filesize
56KB

Download
memory/2984-91-0x00000000078A0000-0x00000000078A8000-memory.dmp

Filesize
32KB

Download
memory/2984-96-0x0000000074430000-0x0000000074BE0000-memory.dmp

Filesize
7.7MB

Download
memory/3628-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-117-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-118-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-125-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3628-126-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download