remcos | 5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da

Analysis

max time kernel
122s
max time network
128s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
04-07-2024 01:26

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General

Target

5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe
Size

904KB
MD5

bce1d14cd2cb21d2a6a52de1b61516c6
SHA1

a112646015f9db212a207e1637abe3cc7bfa3408
SHA256

5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da
SHA512

001f9ef1cdb0f135335e1af087e8fb1d85028f8087777cd022751e693874dffe74672ad1350f4307ba752b4eceb33f8ad85a055d11045dfc45a114d97bcc7e4e
SSDEEP

12288:yHqGmfjIIK49UkXDGtvxrzV9gROZh6vRciD+yz1DCSnJ8LWCdEDvhF2xX8:e0RfqtZHV9gQZsSc+yzRCSnND5F2xs

Score

10^/10

remcos remotehost evasion execution persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

newpage44.mywire.org:5010

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
skype.exe
copy_folder
skype
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-GRUM7D
screenshot_crypt
false
screenshot_flag
true
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:

5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe
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

Processes:

powershell.exe

pid process

2708 powershell.exe
Executes dropped EXE 1 IoCs

Processes:

skype.exe

pid process

1248 skype.exe
Loads dropped DLL 2 IoCs

Processes:

wab.exe

pid process

2572 wab.exe
2572 wab.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe

pid	process
2708	powershell.exe

pid	process
1248	skype.exe

pid	process
2572	wab.exe
2572	wab.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

wab.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-GRUM7D = "\"C:\\ProgramData\\skype\\skype.exe\""	wab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-GRUM7D = "\"C:\\ProgramData\\skype\\skype.exe\""	wab.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe

description pid process target process

PID 2580 set thread context of 2572 2580 5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe wab.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

2708 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exepowershell.exe

description pid process

Token: SeDebugPrivilege 2580 5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe
Token: SeDebugPrivilege 2708 powershell.exe

description	pid	process	target process
PID 2580 set thread context of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe

pid	process
2708	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe
Token: SeDebugPrivilege	2708	powershell.exe

Suspicious use of WriteProcessMemory 47 IoCs

Processes:

5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exewab.exe

description	pid	process	target process
PID 2580 wrote to memory of 2708	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	powershell.exe
PID 2580 wrote to memory of 2708	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	powershell.exe
PID 2580 wrote to memory of 2708	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	powershell.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2652	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	aspnet_wp.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2764	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	svchost.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 2572	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 688	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 688	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 688	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2580 wrote to memory of 688	2580	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe	wab.exe
PID 2572 wrote to memory of 1248	2572	wab.exe	skype.exe
PID 2572 wrote to memory of 1248	2572	wab.exe	skype.exe
PID 2572 wrote to memory of 1248	2572	wab.exe	skype.exe
PID 2572 wrote to memory of 1248	2572	wab.exe	skype.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe

C:\Users\Admin\AppData\Local\Temp\5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe
"C:\Users\Admin\AppData\Local\Temp\5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2580

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\5422c0223694ab7ffdb4968db24177c7bb0426e29b32b0f810192258c0af61da.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2708

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
2⤵
PID:2652

C:\Windows\System32\svchost.exe
"C:\Windows\System32\svchost.exe"
2⤵
PID:2764

C:\Program Files (x86)\Windows Mail\wab.exe
"C:\Program Files (x86)\Windows Mail\wab.exe"
2⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2572

C:\ProgramData\skype\skype.exe
"C:\ProgramData\skype\skype.exe"
3⤵
- Executes dropped EXE
PID:1248

C:\Program Files (x86)\Windows Mail\wab.exe
"C:\Program Files (x86)\Windows Mail\wab.exe"
2⤵
PID:688

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

\ProgramData\skype\skype.exe
Filesize
504KB

MD5
ef162817c730db9355f6c28f2445d206

SHA1
cd8dc9ece1cd52447921afa483c81617b021ecb3

SHA256
84ac974bf163a6eb540744435fd65adc951ecf1bff77dba7d2b5d9f389e1dad7

SHA512
0725dabbaa77acb18ed5e237ea1126d65f53fe58a0c6bed5aca07f24df168381476ea02c67195febfcd19c56feb82ec9a64876382ea98528b81da857f76bc0c1

Download Submit
memory/2572-62-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2572-60-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2572-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2580-2-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/2580-1-0x00000000010E0000-0x00000000010F6000-memory.dmp

Filesize
88KB

Download
memory/2580-0-0x000007FEF5E23000-0x000007FEF5E24000-memory.dmp

Filesize
4KB

Download
memory/2580-3-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2580-4-0x000000001B4E0000-0x000000001B5B2000-memory.dmp

Filesize
840KB

Download
memory/2580-64-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/2652-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2652-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2652-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2652-9-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2652-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2652-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2652-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2652-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2708-43-0x0000000001F20000-0x0000000001F28000-memory.dmp

Filesize
32KB

Download
memory/2708-42-0x000000001B550000-0x000000001B832000-memory.dmp

Filesize
2.9MB

Download
memory/2708-25-0x00000000028D0000-0x0000000002950000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads