remcos | 8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06-04-2024 01:24

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General

Target

8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
Size

892KB
MD5

636a54861ddd167065f294cc76fca7ba
SHA1

7e3eba28bc4b89801c91de5450aa28da5c6ff941
SHA256

8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c
SHA512

cde7be19fc7fa841d22521a6c5ad01129ff604b2f91c1c16e0da7d91434cd962af25a39c8ab43c14915536b47d652eb2e55cf0fab5178a9553ab0f8f74833fc4
SSDEEP

24576:GgkHhAVqHxUrlWy05hMud6hHERSIhO0RDP+dB8:I2V+Ur6MIMHERSIQ0RDr

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

paygateme.net:2286

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-WTDTSU
screenshot_crypt
true
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
1
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 bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 22 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3756-19-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-21-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-23-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-25-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-26-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-28-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-37-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-30-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-44-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-78-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-79-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-80-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-85-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-86-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-93-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-94-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-99-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-100-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-105-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-107-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-113-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/3756-114-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Detects executables packed with SmartAssembly 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4700-6-0x0000000005870000-0x0000000005880000-memory.dmp	INDICATOR_EXE_Packed_SmartAssembly
behavioral2/memory/4700-7-0x0000000005890000-0x000000000589C000-memory.dmp	INDICATOR_EXE_Packed_SmartAssembly

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:

8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe

description	pid	process	target process
PID 4700 set thread context of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.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

3640 schtasks.exe

pid	process
3640	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exepowershell.exe

pid	process
4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
4676	powershell.exe
4676	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
Token: SeDebugPrivilege	4676	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe

pid process

3756 8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe

pid	process
3756	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe

C:\Users\Admin\AppData\Local\Temp\8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
"C:\Users\Admin\AppData\Local\Temp\8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4700

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tzRVJJzEigd.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4676

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tzRVJJzEigd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp971F.tmp"
2⤵
- Creates scheduled task(s)
PID:3640

C:\Users\Admin\AppData\Local\Temp\8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
"C:\Users\Admin\AppData\Local\Temp\8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe"
2⤵
- Suspicious use of SetWindowsHookEx
PID:3756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
c92144259a0d57eec6ab8a476d1f27bc

SHA1
324197dfea58a0f2732cff2609a4d15ef0fb8077

SHA256
bb79cbbbb8edc2d759f5443e09c78133821e947a29502f151537c76909d53b0a

SHA512
fe32624f8bd3a49111a289bb6e8bc694f34aafa852163c85ef4125ebb029dc5c6b3ba3a7b30ffb7e37a66f2cbe4733265ceb6d0c8caff5d60da746b40aeb0c54

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ci1bxwtr.3ga.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp971F.tmp

Filesize
1KB

MD5
9122d280da06b1d5ef0ba077e51b685a

SHA1
a97627ed8a7b43a0437f16c5c6d6027a2b66b1ab

SHA256
b69daa816a3f2e1b7f121f8e0b9adeaffcde539a60b938d927110b941c66069b

SHA512
63e2c19d9101d0e5c0fd56e3247561ce8907d225e35ea2aa6ff8dd2064e3d592576d5afafa61d1d16e59649450c8f5356667552c94e6a0b9252cf755428344ab

Download Submit
memory/3756-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-113-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-114-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-105-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3756-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4676-45-0x0000000005F40000-0x0000000006294000-memory.dmp

Filesize
3.3MB

Download
memory/4676-69-0x0000000007980000-0x0000000007994000-memory.dmp

Filesize
80KB

Download
memory/4676-29-0x0000000005550000-0x0000000005572000-memory.dmp

Filesize
136KB

Download
memory/4676-38-0x0000000005DD0000-0x0000000005E36000-memory.dmp

Filesize
408KB

Download
memory/4676-14-0x0000000002B00000-0x0000000002B36000-memory.dmp

Filesize
216KB

Download
memory/4676-15-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4676-46-0x00000000051A0000-0x00000000051BE000-memory.dmp

Filesize
120KB

Download
memory/4676-47-0x00000000064E0000-0x000000000652C000-memory.dmp

Filesize
304KB

Download
memory/4676-48-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/4676-49-0x0000000006A10000-0x0000000006A42000-memory.dmp

Filesize
200KB

Download
memory/4676-50-0x0000000070D10000-0x0000000070D5C000-memory.dmp

Filesize
304KB

Download
memory/4676-60-0x00000000069F0000-0x0000000006A0E000-memory.dmp

Filesize
120KB

Download
memory/4676-61-0x0000000007450000-0x00000000074F3000-memory.dmp

Filesize
652KB

Download
memory/4676-62-0x0000000007D90000-0x000000000840A000-memory.dmp

Filesize
6.5MB

Download
memory/4676-63-0x0000000007740000-0x000000000775A000-memory.dmp

Filesize
104KB

Download
memory/4676-64-0x00000000077B0000-0x00000000077BA000-memory.dmp

Filesize
40KB

Download
memory/4676-65-0x00000000079C0000-0x0000000007A56000-memory.dmp

Filesize
600KB

Download
memory/4676-67-0x0000000007940000-0x0000000007951000-memory.dmp

Filesize
68KB

Download
memory/4676-68-0x0000000007970000-0x000000000797E000-memory.dmp

Filesize
56KB

Download
memory/4676-31-0x0000000005D60000-0x0000000005DC6000-memory.dmp

Filesize
408KB

Download
memory/4676-70-0x0000000007A80000-0x0000000007A9A000-memory.dmp

Filesize
104KB

Download
memory/4676-71-0x0000000007A60000-0x0000000007A68000-memory.dmp

Filesize
32KB

Download
memory/4676-74-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4676-20-0x00000000055C0000-0x0000000005BE8000-memory.dmp

Filesize
6.2MB

Download
memory/4676-18-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/4676-17-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/4700-0-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4700-24-0x0000000074B70000-0x0000000075320000-memory.dmp

Filesize
7.7MB

Download
memory/4700-9-0x0000000009560000-0x00000000095FC000-memory.dmp

Filesize
624KB

Download
memory/4700-8-0x0000000006EC0000-0x0000000006F80000-memory.dmp

Filesize
768KB

Download
memory/4700-7-0x0000000005890000-0x000000000589C000-memory.dmp

Filesize
48KB

Download
memory/4700-6-0x0000000005870000-0x0000000005880000-memory.dmp

Filesize
64KB

Download
memory/4700-5-0x0000000005720000-0x000000000572A000-memory.dmp

Filesize
40KB

Download
memory/4700-4-0x00000000058F0000-0x0000000005900000-memory.dmp

Filesize
64KB

Download
memory/4700-3-0x0000000005770000-0x0000000005802000-memory.dmp

Filesize
584KB

Download
memory/4700-2-0x0000000005C80000-0x0000000006224000-memory.dmp

Filesize
5.6MB

Download
memory/4700-1-0x0000000000C30000-0x0000000000D16000-memory.dmp

Filesize
920KB

Download

description	pid	process	target process
PID 4700 wrote to memory of 4676	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	powershell.exe
PID 4700 wrote to memory of 4676	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	powershell.exe
PID 4700 wrote to memory of 4676	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	powershell.exe
PID 4700 wrote to memory of 3640	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	schtasks.exe
PID 4700 wrote to memory of 3640	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	schtasks.exe
PID 4700 wrote to memory of 3640	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	schtasks.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe
PID 4700 wrote to memory of 3756	4700	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe	8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c.exe