remcos | f51aedfe6998bb2f8f8c675f26e99b79252a3dee6f086bc44558e3a193470ba4

General

Target

shipping documemt _pdf.exe
Size

1.1MB
MD5

7ac65417f47f6e29e6fa528a5d28a5b3
SHA1

b1a9c007f4c95ece727606f643bd4bd649f66ec9
SHA256

f51aedfe6998bb2f8f8c675f26e99b79252a3dee6f086bc44558e3a193470ba4
SHA512

bb01440d531fbe5fea7e08ea7d90c89632c92a04dd5ffb4ae6b0378a61680ee136dc7324b96e9d43173f83e074a879024f56ff56c73bacafb4d1e932fb217430
SSDEEP

24576:k0S9+TA+CWpmMYwXNGNFUZzcma2nRmCkCptEQybMCnRnj:9lIyXNGNFUZ4ma2RmqtGoSnj

Score

10^/10

remcos remotehost evasion persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

street.letmeshine.xyz:4230

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-7I2WTK
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
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1548.002

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

svchost.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0"	svchost.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

shipping documemt _pdf.exesvchost.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	shipping documemt _pdf.exe
Key value queried	\REGISTRY\USER\S-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

4660 svchost.exe

pid	process
4660	svchost.exe

Windows security modification 2 TTPs 3 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

shipping documemt _pdf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-17203666-93769886-2545153620-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	shipping documemt _pdf.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

svchost.exe

description pid process target process

PID 4660 set thread context of 2280 4660 svchost.exe csc.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

3964 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4608 timeout.exe

description	pid	process	target process
PID 4660 set thread context of 2280	4660	svchost.exe	csc.exe

pid	process
3964	schtasks.exe

pid	process
4608	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

shipping documemt _pdf.exepowershell.exe

pid	process
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1372	shipping documemt _pdf.exe
1140	powershell.exe
1140	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

shipping documemt _pdf.exesvchost.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1372	shipping documemt _pdf.exe
Token: SeDebugPrivilege	4660	svchost.exe
Token: SeDebugPrivilege	1140	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

shipping documemt _pdf.execmd.execmd.exesvchost.exe

description	pid	process	target process
PID 1372 wrote to memory of 4268	1372	shipping documemt _pdf.exe	cmd.exe
PID 1372 wrote to memory of 4268	1372	shipping documemt _pdf.exe	cmd.exe
PID 1372 wrote to memory of 2032	1372	shipping documemt _pdf.exe	cmd.exe
PID 1372 wrote to memory of 2032	1372	shipping documemt _pdf.exe	cmd.exe
PID 2032 wrote to memory of 4608	2032	cmd.exe	timeout.exe
PID 2032 wrote to memory of 4608	2032	cmd.exe	timeout.exe
PID 4268 wrote to memory of 3964	4268	cmd.exe	schtasks.exe
PID 4268 wrote to memory of 3964	4268	cmd.exe	schtasks.exe
PID 2032 wrote to memory of 4660	2032	cmd.exe	svchost.exe
PID 2032 wrote to memory of 4660	2032	cmd.exe	svchost.exe
PID 4660 wrote to memory of 1140	4660	svchost.exe	powershell.exe
PID 4660 wrote to memory of 1140	4660	svchost.exe	powershell.exe
PID 4660 wrote to memory of 3076	4660	svchost.exe	wab.exe
PID 4660 wrote to memory of 3076	4660	svchost.exe	wab.exe
PID 4660 wrote to memory of 3076	4660	svchost.exe	wab.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe
PID 4660 wrote to memory of 2280	4660	svchost.exe	csc.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

svchost.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\shipping documemt _pdf.exe
"C:\Users\Admin\AppData\Local\Temp\shipping documemt _pdf.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1372

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:4268

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
3⤵
- Creates scheduled task(s)
PID:3964

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp42F4.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:2032

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:4608

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- UAC bypass
- Windows security bypass
- Checks computer location settings
- Executes dropped EXE
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4660

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\svchost.exe" -Force
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1140

C:\Program Files (x86)\Windows Mail\wab.exe
"C:\Program Files (x86)\Windows Mail\wab.exe"
4⤵
PID:3076

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
4⤵
PID:2280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

3

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_teofzw52.eeq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp42F4.tmp.bat

Filesize
151B

MD5
80a6ebc7d2869bf9ed4d9adf6583b75d

SHA1
cd7e2a8f8ae4ed4ad031786714595d7c0a361165

SHA256
bcfd52cebb4be02c59749434ea34cbeaa574c3e35559b9c6353da9d80d413353

SHA512
cae90051cff465b0fadec8ddee600c6b62e6f5deb59b1da72e78f400516d677ad470f5cc0a020d06433504893a674e20543ba72d2c072ec55aad8c2d7d53c432

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
1.1MB

MD5
7ac65417f47f6e29e6fa528a5d28a5b3

SHA1
b1a9c007f4c95ece727606f643bd4bd649f66ec9

SHA256
f51aedfe6998bb2f8f8c675f26e99b79252a3dee6f086bc44558e3a193470ba4

SHA512
bb01440d531fbe5fea7e08ea7d90c89632c92a04dd5ffb4ae6b0378a61680ee136dc7324b96e9d43173f83e074a879024f56ff56c73bacafb4d1e932fb217430

Download Submit
memory/1140-13-0x00000163C4330000-0x00000163C4352000-memory.dmp

Filesize
136KB

Download
memory/1372-0-0x000001B5F37C0000-0x000001B5F3818000-memory.dmp

Filesize
352KB

Download
memory/1372-1-0x00007FFBD4530000-0x00007FFBD4FF1000-memory.dmp

Filesize
10.8MB

Download
memory/1372-2-0x000001B5F5DF0000-0x000001B5F5E00000-memory.dmp

Filesize
64KB

Download
memory/1372-3-0x000001B5F5C00000-0x000001B5F5CD2000-memory.dmp

Filesize
840KB

Download
memory/1372-8-0x00007FFBD4530000-0x00007FFBD4FF1000-memory.dmp

Filesize
10.8MB

Download
memory/2280-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2280-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2280-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads