remcos | 264d6866d534205d35dcbbb2e5f031440f5580ae97d0eec657477f957039126a

General

Target

TSTS 0005A.exe
Size

922KB
MD5

b195643d6d8c3f81c7409533ad14726c
SHA1

c09b56928fb1f448ed9b3610a0b930f77e2ebcfe
SHA256

f4eaa74eb268a58cff6f5d37607758bd49cc00af060da799857ae10cfd59efb2
SHA512

b843153f581be5a77b8575cf09e25333d5eaf5af3b689441ad0af336c4494a6181d5882dfa8b2ba2d90acb64cd3db9ab26f1cf87e1991f996d26cbb6990c5fb8
SSDEEP

24576:JgjHr6DLW5Gaxs00MUVXdtS6seDmw+Op8lCua51:WrpDxclG65mg8lCuo

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

sembe.duckdns.org:14645

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
true
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
notess
keylog_path
%AppData%
mouse_option
false
mutex
Rmc-P0AEMX
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

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 20 IoCs

Processes:

resource	yara_rule
behavioral2/memory/720-20-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-21-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-23-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-26-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-30-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-32-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-27-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-43-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-46-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-47-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-48-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-82-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-83-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-85-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-91-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-92-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-99-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-100-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-107-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/720-108-0x0000000000400000-0x0000000000482000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Detects executables packed with SmartAssembly 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3192-6-0x00000000051A0000-0x00000000051B0000-memory.dmp	INDICATOR_EXE_Packed_SmartAssembly
behavioral2/memory/3192-7-0x0000000005450000-0x000000000545C000-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:

TSTS 0005A.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	TSTS 0005A.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

TSTS 0005A.exe

description pid process target process

PID 3192 set thread context of 720 3192 TSTS 0005A.exe TSTS 0005A.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

4008 schtasks.exe

description	pid	process	target process
PID 3192 set thread context of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe

pid	process
4008	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

TSTS 0005A.exepowershell.exe

pid	process
3192	TSTS 0005A.exe
3192	TSTS 0005A.exe
3192	TSTS 0005A.exe
3192	TSTS 0005A.exe
3192	TSTS 0005A.exe
3192	TSTS 0005A.exe
3156	powershell.exe
3156	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

TSTS 0005A.exepowershell.exe

description pid process

Token: SeDebugPrivilege 3192 TSTS 0005A.exe
Token: SeDebugPrivilege 3156 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

TSTS 0005A.exe

pid process

720 TSTS 0005A.exe

description	pid	process
Token: SeDebugPrivilege	3192	TSTS 0005A.exe
Token: SeDebugPrivilege	3156	powershell.exe

pid	process
720	TSTS 0005A.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

TSTS 0005A.exe

description	pid	process	target process
PID 3192 wrote to memory of 3156	3192	TSTS 0005A.exe	powershell.exe
PID 3192 wrote to memory of 3156	3192	TSTS 0005A.exe	powershell.exe
PID 3192 wrote to memory of 3156	3192	TSTS 0005A.exe	powershell.exe
PID 3192 wrote to memory of 4008	3192	TSTS 0005A.exe	schtasks.exe
PID 3192 wrote to memory of 4008	3192	TSTS 0005A.exe	schtasks.exe
PID 3192 wrote to memory of 4008	3192	TSTS 0005A.exe	schtasks.exe
PID 3192 wrote to memory of 2072	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 2072	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 2072	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 4744	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 4744	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 4744	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 1532	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 1532	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 1532	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe
PID 3192 wrote to memory of 720	3192	TSTS 0005A.exe	TSTS 0005A.exe

C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3192

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vcEDbAjawlTHE.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3156

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vcEDbAjawlTHE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp922E.tmp"
2⤵
- Creates scheduled task(s)
PID:4008

C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"
2⤵
PID:2072

C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"
2⤵
PID:4744

C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"
2⤵
PID:1532

C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"
2⤵
- Suspicious use of SetWindowsHookEx
PID:720

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4povjv1k.l5i.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp922E.tmp
Filesize
1KB

MD5
498ad40ba958f549f3d3fe8aa78e6677

SHA1
69f8d01a104fccb676cd7fcde71e14ae28f7aae2

SHA256
3041913dc6bdb260ad9e52393c16e02b03fcdf1db5be489402f0dc982c8f5161

SHA512
9437d0c68f0f773fb892ecaf0cd233518c4459eeb7d7567464e7ff7348c6d10c4cf2a6ef1094ebb8d6b0fc6b370c6d55c71da743207c4419d846256d8c7b98ab

Download Submit
C:\Users\Admin\AppData\Roaming\notess\logs.dat
Filesize
144B

MD5
136b18e496546efc530e6c8176e00997

SHA1
243550b2d86f527d070fa34720d46ae63e0e2dcb

SHA256
1fa041160fde114914d71778e9044b6c79acd25c54d7afcb55d5037f69a0adb9

SHA512
db53663d99ccb9410068bff9065098572ad7c095f5594c87a3e3beeae925b830b3d9f9fc7b50f2e0e12fbbd0f90ed6dc0f8ab2de97b8b6589c8fd617d70bf2e7

Download Submit
memory/720-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-92-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-91-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-108-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/720-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3156-44-0x0000000005DB0000-0x0000000005DCE000-memory.dmp

Filesize
120KB

Download
memory/3156-67-0x00000000070C0000-0x00000000070DA000-memory.dmp

Filesize
104KB

Download
memory/3156-25-0x0000000004DD0000-0x0000000004DF2000-memory.dmp

Filesize
136KB

Download
memory/3156-29-0x00000000056F0000-0x0000000005756000-memory.dmp

Filesize
408KB

Download
memory/3156-14-0x00000000047F0000-0x0000000004826000-memory.dmp

Filesize
216KB

Download
memory/3156-42-0x00000000058D0000-0x0000000005C24000-memory.dmp

Filesize
3.3MB

Download
memory/3156-19-0x0000000004F50000-0x0000000005578000-memory.dmp

Filesize
6.2MB

Download
memory/3156-79-0x0000000074DC0000-0x0000000075570000-memory.dmp

Filesize
7.7MB

Download
memory/3156-45-0x0000000005E60000-0x0000000005EAC000-memory.dmp

Filesize
304KB

Download
memory/3156-16-0x0000000004910000-0x0000000004920000-memory.dmp

Filesize
64KB

Download
memory/3156-18-0x0000000004910000-0x0000000004920000-memory.dmp

Filesize
64KB

Download
memory/3156-15-0x0000000074DC0000-0x0000000075570000-memory.dmp

Filesize
7.7MB

Download
memory/3156-51-0x0000000004910000-0x0000000004920000-memory.dmp

Filesize
64KB

Download
memory/3156-52-0x000000007F160000-0x000000007F170000-memory.dmp

Filesize
64KB

Download
memory/3156-53-0x0000000006380000-0x00000000063B2000-memory.dmp

Filesize
200KB

Download
memory/3156-54-0x0000000070F00000-0x0000000070F4C000-memory.dmp

Filesize
304KB

Download
memory/3156-64-0x0000000006350000-0x000000000636E000-memory.dmp

Filesize
120KB

Download
memory/3156-65-0x0000000006FB0000-0x0000000007053000-memory.dmp

Filesize
652KB

Download
memory/3156-66-0x0000000007700000-0x0000000007D7A000-memory.dmp

Filesize
6.5MB

Download
memory/3156-31-0x0000000005760000-0x00000000057C6000-memory.dmp

Filesize
408KB

Download
memory/3156-68-0x0000000007130000-0x000000000713A000-memory.dmp

Filesize
40KB

Download
memory/3156-69-0x0000000007340000-0x00000000073D6000-memory.dmp

Filesize
600KB

Download
memory/3156-72-0x00000000072C0000-0x00000000072D1000-memory.dmp

Filesize
68KB

Download
memory/3156-73-0x00000000072F0000-0x00000000072FE000-memory.dmp

Filesize
56KB

Download
memory/3156-74-0x0000000007300000-0x0000000007314000-memory.dmp

Filesize
80KB

Download
memory/3156-75-0x0000000007400000-0x000000000741A000-memory.dmp

Filesize
104KB

Download
memory/3156-76-0x00000000073E0000-0x00000000073E8000-memory.dmp

Filesize
32KB

Download
memory/3192-0-0x0000000074DC0000-0x0000000075570000-memory.dmp

Filesize
7.7MB

Download
memory/3192-24-0x0000000074DC0000-0x0000000075570000-memory.dmp

Filesize
7.7MB

Download
memory/3192-9-0x0000000008D30000-0x0000000008DCC000-memory.dmp

Filesize
624KB

Download
memory/3192-8-0x00000000066B0000-0x0000000006770000-memory.dmp

Filesize
768KB

Download
memory/3192-7-0x0000000005450000-0x000000000545C000-memory.dmp

Filesize
48KB

Download
memory/3192-6-0x00000000051A0000-0x00000000051B0000-memory.dmp

Filesize
64KB

Download
memory/3192-5-0x0000000004F50000-0x0000000004F5A000-memory.dmp

Filesize
40KB

Download
memory/3192-4-0x00000000051C0000-0x00000000051D0000-memory.dmp

Filesize
64KB

Download
memory/3192-3-0x0000000004F60000-0x0000000004FF2000-memory.dmp

Filesize
584KB

Download
memory/3192-2-0x0000000005470000-0x0000000005A14000-memory.dmp

Filesize
5.6MB

Download
memory/3192-1-0x0000000000460000-0x0000000000548000-memory.dmp

Filesize
928KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads