remcos | f197a58d2ac9ac937c5d417d0800d4804a80402395cdde0fe42dec0931674da4

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
08-08-2023 07:14

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General

Target

c88d4757ee5c295c3ff996dca43e737a.exe
Size

987KB
MD5

c88d4757ee5c295c3ff996dca43e737a
SHA1

dc307074db36fefeb99a5c1715b90a1382493d70
SHA256

f197a58d2ac9ac937c5d417d0800d4804a80402395cdde0fe42dec0931674da4
SHA512

a2901e2941f0fd5b72b46840852e2f056a006e665eb2f54dedd30c3a139e0f8d1f780d237626e9f3a2df2e95daf1e25f9430de4e9cc8a82e7d2aef92decfd5f6
SSDEEP

12288:x+h7rFnTibJ2tYdG7T+IAmvHfvT2Nxda5vWfco//3HS8meXaI1eIEJJZ3gSeYApt:S6byT+I/vXT2NMWfco//3y8m29MQCyt

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

212.193.30.230:3343

79.110.49.161:3343

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-CQL1U6
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

c88d4757ee5c295c3ff996dca43e737a.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ktwrl = "C:\\Users\\Admin\\AppData\\Roaming\\Ktwrl.exe"	c88d4757ee5c295c3ff996dca43e737a.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

c88d4757ee5c295c3ff996dca43e737a.exe

description pid process target process

PID 4460 set thread context of 4296 4460 c88d4757ee5c295c3ff996dca43e737a.exe MSBuild.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

3624 powershell.exe
3624 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

c88d4757ee5c295c3ff996dca43e737a.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4460 c88d4757ee5c295c3ff996dca43e737a.exe
Token: SeDebugPrivilege 3624 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

MSBuild.exe

pid process

4296 MSBuild.exe

description	pid	process	target process
PID 4460 set thread context of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe

pid	process
3624	powershell.exe
3624	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4460	c88d4757ee5c295c3ff996dca43e737a.exe
Token: SeDebugPrivilege	3624	powershell.exe

pid	process
4296	MSBuild.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

c88d4757ee5c295c3ff996dca43e737a.execmd.exe

description	pid	process	target process
PID 4460 wrote to memory of 4544	4460	c88d4757ee5c295c3ff996dca43e737a.exe	cmd.exe
PID 4460 wrote to memory of 4544	4460	c88d4757ee5c295c3ff996dca43e737a.exe	cmd.exe
PID 4460 wrote to memory of 4544	4460	c88d4757ee5c295c3ff996dca43e737a.exe	cmd.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4460 wrote to memory of 4296	4460	c88d4757ee5c295c3ff996dca43e737a.exe	MSBuild.exe
PID 4544 wrote to memory of 3624	4544	cmd.exe	powershell.exe
PID 4544 wrote to memory of 3624	4544	cmd.exe	powershell.exe
PID 4544 wrote to memory of 3624	4544	cmd.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\c88d4757ee5c295c3ff996dca43e737a.exe
"C:\Users\Admin\AppData\Local\Temp\c88d4757ee5c295c3ff996dca43e737a.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4460

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c powershell set-mppreference -exclusionpath C:\
2⤵
- Suspicious use of WriteProcessMemory
PID:4544

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell set-mppreference -exclusionpath C:\
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3624

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
2⤵
- Suspicious use of SetWindowsHookEx
PID:4296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

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
0f672c3e1558c56f08cd4281c3c33a37

SHA1
34efbe5682a516d711235404b9dbda3f8ae73fff

SHA256
c024a18287f31e50f770bb5d76d513b05fdd06db7f3820d0961180a817ffe910

SHA512
1145336f59a13ad8c09e67a97462fb8b8df7bf18ce8beacffbdbb1187b9d5c452454330b75f91a3f3047af680ce0b2fd178e96655f12463d35aab66b43e76f90

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5xtebuzc.3r4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3624-1272-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/3624-1234-0x0000000004C40000-0x0000000004C62000-memory.dmp

Filesize
136KB

Download
memory/3624-1254-0x0000000006110000-0x0000000006142000-memory.dmp

Filesize
200KB

Download
memory/3624-1273-0x0000000007070000-0x000000000707E000-memory.dmp

Filesize
56KB

Download
memory/3624-1253-0x000000007F670000-0x000000007F680000-memory.dmp

Filesize
64KB

Download
memory/3624-1228-0x0000000000D70000-0x0000000000DA6000-memory.dmp

Filesize
216KB

Download
memory/3624-1270-0x00000000070C0000-0x0000000007156000-memory.dmp

Filesize
600KB

Download
memory/3624-1252-0x0000000000F40000-0x0000000000F50000-memory.dmp

Filesize
64KB

Download
memory/3624-1267-0x0000000006E40000-0x0000000006E5A000-memory.dmp

Filesize
104KB

Download
memory/3624-1266-0x0000000007490000-0x0000000007B0A000-memory.dmp

Filesize
6.5MB

Download
memory/3624-1265-0x00000000060A0000-0x00000000060BE000-memory.dmp

Filesize
120KB

Download
memory/3624-1255-0x0000000070FD0000-0x000000007101C000-memory.dmp

Filesize
304KB

Download
memory/3624-1274-0x0000000007180000-0x000000000719A000-memory.dmp

Filesize
104KB

Download
memory/3624-1230-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/3624-1269-0x0000000006EC0000-0x0000000006ECA000-memory.dmp

Filesize
40KB

Download
memory/3624-1246-0x0000000005B40000-0x0000000005B5E000-memory.dmp

Filesize
120KB

Download
memory/3624-1278-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/3624-1241-0x0000000005520000-0x0000000005586000-memory.dmp

Filesize
408KB

Download
memory/3624-1235-0x0000000005440000-0x00000000054A6000-memory.dmp

Filesize
408KB

Download
memory/3624-1275-0x0000000007160000-0x0000000007168000-memory.dmp

Filesize
32KB

Download
memory/3624-1233-0x0000000004DA0000-0x00000000053C8000-memory.dmp

Filesize
6.2MB

Download
memory/3624-1232-0x0000000000F40000-0x0000000000F50000-memory.dmp

Filesize
64KB

Download
memory/3624-1231-0x0000000000F40000-0x0000000000F50000-memory.dmp

Filesize
64KB

Download
memory/4296-1224-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4296-1271-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4460-160-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-168-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-184-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-186-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-188-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-190-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-192-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-194-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-196-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-198-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-200-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-202-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-1215-0x0000000005950000-0x0000000005951000-memory.dmp

Filesize
4KB

Download
memory/4460-1216-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/4460-1222-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/4460-180-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-178-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-176-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-174-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-172-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-170-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-182-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-166-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-164-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-162-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-133-0x0000000000940000-0x0000000000A3E000-memory.dmp

Filesize
1016KB

Download
memory/4460-158-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-156-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-152-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-154-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-150-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-148-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-146-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-144-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-142-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-140-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-139-0x0000000006A90000-0x0000000006B7E000-memory.dmp

Filesize
952KB

Download
memory/4460-138-0x0000000005450000-0x000000000545A000-memory.dmp

Filesize
40KB

Download
memory/4460-137-0x0000000005430000-0x0000000005440000-memory.dmp

Filesize
64KB

Download
memory/4460-136-0x0000000005460000-0x00000000054F2000-memory.dmp

Filesize
584KB

Download
memory/4460-135-0x0000000005970000-0x0000000005F14000-memory.dmp

Filesize
5.6MB

Download
memory/4460-134-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download