remcos | f4eaa74eb268a58cff6f5d37607758bd49cc00af060da799857ae10cfd59efb2

Analysis

max time kernel
162s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05-04-2024 09:51

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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

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

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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	TSTS 0005A.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

TSTS 0005A.exe

description pid process target process

PID 2672 set thread context of 1268 2672 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

3036 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

TSTS 0005A.exepowershell.exe

pid process

2672 TSTS 0005A.exe
2672 TSTS 0005A.exe
2824 powershell.exe
2824 powershell.exe
2824 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeTSTS 0005A.exe

description pid process

Token: SeDebugPrivilege 2824 powershell.exe
Token: SeDebugPrivilege 2672 TSTS 0005A.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

TSTS 0005A.exe

pid process

1268 TSTS 0005A.exe

description	pid	process	target process
PID 2672 set thread context of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe

pid	process
3036	schtasks.exe

pid	process
2672	TSTS 0005A.exe
2672	TSTS 0005A.exe
2824	powershell.exe
2824	powershell.exe
2824	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2824	powershell.exe
Token: SeDebugPrivilege	2672	TSTS 0005A.exe

pid	process
1268	TSTS 0005A.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

TSTS 0005A.exe

description	pid	process	target process
PID 2672 wrote to memory of 2824	2672	TSTS 0005A.exe	powershell.exe
PID 2672 wrote to memory of 2824	2672	TSTS 0005A.exe	powershell.exe
PID 2672 wrote to memory of 2824	2672	TSTS 0005A.exe	powershell.exe
PID 2672 wrote to memory of 3036	2672	TSTS 0005A.exe	schtasks.exe
PID 2672 wrote to memory of 3036	2672	TSTS 0005A.exe	schtasks.exe
PID 2672 wrote to memory of 3036	2672	TSTS 0005A.exe	schtasks.exe
PID 2672 wrote to memory of 4496	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 4496	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 4496	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	TSTS 0005A.exe	TSTS 0005A.exe
PID 2672 wrote to memory of 1268	2672	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:2672

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:2824

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vcEDbAjawlTHE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF26E.tmp"
2⤵
- Creates scheduled task(s)
PID:3036

C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"
2⤵
PID:4496

C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe
"C:\Users\Admin\AppData\Local\Temp\TSTS 0005A.exe"
2⤵
- Suspicious use of SetWindowsHookEx
PID:1268

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4052 --field-trial-handle=2972,i,4036376905309803364,5412922217215781933,262144 --variations-seed-version /prefetch:8
1⤵
PID:1724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bqqutoud.mni.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF26E.tmp

Filesize
1KB

MD5
c823d11bc37956da6bccebb9572b4e89

SHA1
0222fe5c2bd680637e2352c3102b12d43a856a51

SHA256
0d310bcb5552909b55c50f2abfd04074870f4caac86b0ea4508484515df8e449

SHA512
2b0285417639984159b20fa80b401e9a1e7f23d8252a9aff57c90552f42664bdb08cb45b41fe6090f20d441b210e8d7207789826e1cb94a142fd65f7469fef98

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

Filesize
144B

MD5
b10e04773cefc430e27a27aef7365059

SHA1
4f58020136a6b7779f7b4a5133fab0c68e6e7ce5

SHA256
4a65428060d2fc34f941159b8a083dc801e270767cb398ebe0ae8d872d86ee50

SHA512
d2aee43332c004d7faef7e1ee50accf37c5709c5ee53f05b5c8a8a9aec569ba7dcc8090d2a73ce606aa0d1d59c595306a69ca8df38b5f6915cb7f2818b4c71f6

Download Submit
memory/1268-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-109-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-101-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-93-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1268-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2672-20-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/2672-29-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/2672-9-0x0000000008CA0000-0x0000000008D3C000-memory.dmp

Filesize
624KB

Download
memory/2672-8-0x0000000006600000-0x00000000066C0000-memory.dmp

Filesize
768KB

Download
memory/2672-7-0x00000000051F0000-0x00000000051FC000-memory.dmp

Filesize
48KB

Download
memory/2672-6-0x0000000004FF0000-0x0000000005000000-memory.dmp

Filesize
64KB

Download
memory/2672-5-0x0000000004F30000-0x0000000004F3A000-memory.dmp

Filesize
40KB

Download
memory/2672-0-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/2672-4-0x0000000005010000-0x0000000005020000-memory.dmp

Filesize
64KB

Download
memory/2672-3-0x0000000004E60000-0x0000000004EF2000-memory.dmp

Filesize
584KB

Download
memory/2672-2-0x0000000005520000-0x0000000005AC4000-memory.dmp

Filesize
5.6MB

Download
memory/2672-1-0x00000000003A0000-0x0000000000488000-memory.dmp

Filesize
928KB

Download
memory/2824-44-0x00000000068F0000-0x000000000690E000-memory.dmp

Filesize
120KB

Download
memory/2824-52-0x00000000030D0000-0x00000000030E0000-memory.dmp

Filesize
64KB

Download
memory/2824-53-0x000000007F560000-0x000000007F570000-memory.dmp

Filesize
64KB

Download
memory/2824-54-0x00000000078A0000-0x00000000078D2000-memory.dmp

Filesize
200KB

Download
memory/2824-55-0x0000000071460000-0x00000000714AC000-memory.dmp

Filesize
304KB

Download
memory/2824-65-0x0000000007860000-0x000000000787E000-memory.dmp

Filesize
120KB

Download
memory/2824-66-0x00000000078E0000-0x0000000007983000-memory.dmp

Filesize
652KB

Download
memory/2824-67-0x0000000008240000-0x00000000088BA000-memory.dmp

Filesize
6.5MB

Download
memory/2824-68-0x0000000007C00000-0x0000000007C1A000-memory.dmp

Filesize
104KB

Download
memory/2824-69-0x0000000007C70000-0x0000000007C7A000-memory.dmp

Filesize
40KB

Download
memory/2824-72-0x0000000007E80000-0x0000000007F16000-memory.dmp

Filesize
600KB

Download
memory/2824-73-0x0000000007E00000-0x0000000007E11000-memory.dmp

Filesize
68KB

Download
memory/2824-74-0x0000000007E30000-0x0000000007E3E000-memory.dmp

Filesize
56KB

Download
memory/2824-75-0x0000000007E40000-0x0000000007E54000-memory.dmp

Filesize
80KB

Download
memory/2824-76-0x0000000007F40000-0x0000000007F5A000-memory.dmp

Filesize
104KB

Download
memory/2824-77-0x0000000007F20000-0x0000000007F28000-memory.dmp

Filesize
32KB

Download
memory/2824-80-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/2824-45-0x0000000006940000-0x000000000698C000-memory.dmp

Filesize
304KB

Download
memory/2824-38-0x00000000062E0000-0x0000000006634000-memory.dmp

Filesize
3.3MB

Download
memory/2824-24-0x0000000006110000-0x0000000006176000-memory.dmp

Filesize
408KB

Download
memory/2824-25-0x0000000006270000-0x00000000062D6000-memory.dmp

Filesize
408KB

Download
memory/2824-21-0x0000000005810000-0x0000000005832000-memory.dmp

Filesize
136KB

Download
memory/2824-19-0x00000000030D0000-0x00000000030E0000-memory.dmp

Filesize
64KB

Download
memory/2824-17-0x00000000030D0000-0x00000000030E0000-memory.dmp

Filesize
64KB

Download
memory/2824-18-0x0000000005AE0000-0x0000000006108000-memory.dmp

Filesize
6.2MB

Download
memory/2824-16-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/2824-14-0x0000000002FD0000-0x0000000003006000-memory.dmp

Filesize
216KB

Download