remcos | 90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b

Resubmissions

08-08-2023 05:00

230808-fm4ybacc31 10

07-08-2023 13:39

230807-qx4qeafe63 10

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
07-08-2023 13:39

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General

Target

90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe
Size

1.6MB
MD5

9286304f3592ab2de2d549722e6869b8
SHA1

fee5ef729c85412275c371da5d1360fae7a87e44
SHA256

90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b
SHA512

59e323202b6c9ba2239e8eaf2d6c4bc416a61ce28edeace8655791b81023c253aba6f87075752bbbe3d127fd45837bd7d3abfc44f768266cc1325289ce030d9a
SSDEEP

49152:MrS/XYg7k3aKoznVWeOYvsEyKbNWCpQf:MiXPjB5PFJy

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:

90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Evmswr = "C:\\Users\\Admin\\AppData\\Roaming\\Evmswr.exe"	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe

description	pid	process	target process
PID 3940 set thread context of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.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

4164 powershell.exe
4164 powershell.exe

pid	process
4164	powershell.exe
4164	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe
Token: SeDebugPrivilege	4164	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

MSBuild.exe

pid process

784 MSBuild.exe

pid	process
784	MSBuild.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.execmd.exe

description	pid	process	target process
PID 3940 wrote to memory of 1508	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	cmd.exe
PID 3940 wrote to memory of 1508	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	cmd.exe
PID 3940 wrote to memory of 1508	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	cmd.exe
PID 1508 wrote to memory of 4164	1508	cmd.exe	powershell.exe
PID 1508 wrote to memory of 4164	1508	cmd.exe	powershell.exe
PID 1508 wrote to memory of 4164	1508	cmd.exe	powershell.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe
PID 3940 wrote to memory of 784	3940	90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe
"C:\Users\Admin\AppData\Local\Temp\90199e919b753c405f76a253d0994209b7231e9f1927d9af81e6bc022f93235b.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3940

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c powershell set-mppreference -exclusionpath C:\
2⤵
- Suspicious use of WriteProcessMemory
PID:1508

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell set-mppreference -exclusionpath C:\
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4164

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:784

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
789518985cbf989ed95a562ed8ec93ce

SHA1
d17ece2e0d583cba9896bfb913658e02fd6ed1f4

SHA256
9de82115396dc0ff0cf20689d28fa431da6c943d500e8c0868fde4f7bdf2a425

SHA512
1922cd669dd9796ae56136a148a738011c77b62e0af7bb21b9638a7fca3433345fd365edca30d01ec65cffaa5ab1b02b433d47548f3070155f857920cf40f0e8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_in45eacs.2xy.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/784-1227-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/784-1272-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/3940-186-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-152-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-135-0x0000000005440000-0x00000000059E4000-memory.dmp

Filesize
5.6MB

Download
memory/3940-136-0x0000000004F30000-0x0000000004FC2000-memory.dmp

Filesize
584KB

Download
memory/3940-137-0x0000000005130000-0x0000000005140000-memory.dmp

Filesize
64KB

Download
memory/3940-190-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-139-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-140-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-142-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-144-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-146-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-148-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-150-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-192-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-154-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-156-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-158-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-160-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-162-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-164-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-166-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-168-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-170-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-172-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-174-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-194-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-178-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-180-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-182-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-184-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-133-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/3940-188-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-138-0x0000000004E90000-0x0000000004E9A000-memory.dmp

Filesize
40KB

Download
memory/3940-134-0x00000000002F0000-0x000000000048A000-memory.dmp

Filesize
1.6MB

Download
memory/3940-176-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-196-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-198-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-200-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-202-0x0000000006780000-0x000000000686F000-memory.dmp

Filesize
956KB

Download
memory/3940-498-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/3940-1216-0x0000000005290000-0x0000000005291000-memory.dmp

Filesize
4KB

Download
memory/3940-1226-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/4164-1268-0x00000000072C0000-0x00000000072DA000-memory.dmp

Filesize
104KB

Download
memory/4164-1247-0x0000000006230000-0x0000000006262000-memory.dmp

Filesize
200KB

Download
memory/4164-1218-0x0000000002360000-0x0000000002396000-memory.dmp

Filesize
216KB

Download
memory/4164-1224-0x0000000004E80000-0x00000000054A8000-memory.dmp

Filesize
6.2MB

Download
memory/4164-1230-0x0000000004D70000-0x0000000004D92000-memory.dmp

Filesize
136KB

Download
memory/4164-1233-0x00000000055B0000-0x0000000005616000-memory.dmp

Filesize
408KB

Download
memory/4164-1240-0x0000000005620000-0x0000000005686000-memory.dmp

Filesize
408KB

Download
memory/4164-1245-0x0000000005C70000-0x0000000005C8E000-memory.dmp

Filesize
120KB

Download
memory/4164-1246-0x00000000022E0000-0x00000000022F0000-memory.dmp

Filesize
64KB

Download
memory/4164-1259-0x00000000075B0000-0x0000000007C2A000-memory.dmp

Filesize
6.5MB

Download
memory/4164-1220-0x00000000022E0000-0x00000000022F0000-memory.dmp

Filesize
64KB

Download
memory/4164-1219-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/4164-1273-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/4164-1258-0x0000000006200000-0x000000000621E000-memory.dmp

Filesize
120KB

Download
memory/4164-1261-0x0000000006FD0000-0x0000000006FDA000-memory.dmp

Filesize
40KB

Download
memory/4164-1263-0x00000000071E0000-0x0000000007276000-memory.dmp

Filesize
600KB

Download
memory/4164-1264-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/4164-1265-0x00000000022E0000-0x00000000022F0000-memory.dmp

Filesize
64KB

Download
memory/4164-1266-0x00000000071B0000-0x00000000071BE000-memory.dmp

Filesize
56KB

Download
memory/4164-1267-0x00000000022E0000-0x00000000022F0000-memory.dmp

Filesize
64KB

Download
memory/4164-1248-0x0000000070DA0000-0x0000000070DEC000-memory.dmp

Filesize
304KB

Download
memory/4164-1269-0x00000000072A0000-0x00000000072A8000-memory.dmp

Filesize
32KB

Download
memory/4164-1260-0x0000000006F60000-0x0000000006F7A000-memory.dmp

Filesize
104KB

Download