remcos | b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250211-en
resource tags

arch:x64arch:x86image:win10v2004-20250211-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2025, 05:57

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General

Target

Bukti-transfer...exe
Size

1.0MB
MD5

ec5a7a616e71dd9eaa5453a172a2c952
SHA1

77c2abbfee86dc74dab6b7a13e7d0e3cd1589dec
SHA256

b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775
SHA512

7192ba6bc1353ad5ec5c1b6a19b7e7402cb36fc11e377fd23859c24a9ee28a6767138a726d630b5d201f4dc202a6d02cb1e18845115d7e83eae7808977e3fb9a
SSDEEP

24576:k+wIZTEg2BKLobjEmOTWcN0QCgqYmt9yX8THRr1OBQeb:k+wIZTPBkEWeCgZmt3p1OBzb

Score

10^/10

remcos feb 09 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

FEB 09

oktoviyanto.ddns.net:9373

103.186.117.61:9373

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-Z2L02T
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

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

pid	Process
2268	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
28	452	Process not Found

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2656314083-4170277356-267438488-1000\Control Panel\International\Geo\Nation	Bukti-transfer...exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 540 set thread context of 4880	540	Bukti-transfer...exe	96

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bukti-transfer...exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bukti-transfer...exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
908	MicrosoftEdgeUpdate.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
724	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
540	Bukti-transfer...exe
540	Bukti-transfer...exe
2268	powershell.exe
2268	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	540	Bukti-transfer...exe
Token: SeDebugPrivilege	2268	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4880	Bukti-transfer...exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 2268	540	Bukti-transfer...exe	92
PID 540 wrote to memory of 2268	540	Bukti-transfer...exe	92
PID 540 wrote to memory of 2268	540	Bukti-transfer...exe	92
PID 540 wrote to memory of 724	540	Bukti-transfer...exe	94
PID 540 wrote to memory of 724	540	Bukti-transfer...exe	94
PID 540 wrote to memory of 724	540	Bukti-transfer...exe	94
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96
PID 540 wrote to memory of 4880	540	Bukti-transfer...exe	96

C:\Users\Admin\AppData\Local\Temp\Bukti-transfer...exe
"C:\Users\Admin\AppData\Local\Temp\Bukti-transfer...exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:540
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\libpROjsBrZfd.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2268
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\libpROjsBrZfd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD08E.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:724
- C:\Users\Admin\AppData\Local\Temp\Bukti-transfer...exe
  "C:\Users\Admin\AppData\Local\Temp\Bukti-transfer...exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4880

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIyIiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODM0MTAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NTUzNjg2NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0ODU5MDM4NDk5Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
1edb3300b91b70b95acab67e1c13c53b

SHA1
56abefaeb0ad0608cacea58e6cf17fcb43db85f2

SHA256
3ab15b6f12b536bd94ef020bfe164c230f878afc067bbd2cfe453c387bfbc50b

SHA512
7b680d0d5d93c6cc3316030336304a7eb8e53c40968679497797df47d45c7673ab47c215d66293c75fb4084989be08b9aaeb0433eff76c69e248f4a28a02883e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rkredffc.yb2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD08E.tmp

Filesize
1KB

MD5
11f35c44f35e6d82ded2534ca8f134db

SHA1
e26e5043262499021bd3981846f8b882487f81d8

SHA256
effb1268f84de3bfaa9d0c7767821038e8fce73d8e2d15c1ecb9dc2bc3c3ceae

SHA512
56d2e0060a5cbdd97eda8ef6c85db14870c2b1ffe804e18afad94121c857a0ccf697de4c9d415f95e2eb158e46d493a229990bf5df4cb11dce34cff0191e9b92

Download Submit
memory/540-6-0x00000000052F0000-0x000000000530E000-memory.dmp

Filesize
120KB

Download
memory/540-4-0x0000000004D40000-0x0000000004D4A000-memory.dmp

Filesize
40KB

Download
memory/540-5-0x0000000073DE0000-0x0000000074590000-memory.dmp

Filesize
7.7MB

Download
memory/540-30-0x0000000073DE0000-0x0000000074590000-memory.dmp

Filesize
7.7MB

Download
memory/540-7-0x0000000073DEE000-0x0000000073DEF000-memory.dmp

Filesize
4KB

Download
memory/540-8-0x0000000073DE0000-0x0000000074590000-memory.dmp

Filesize
7.7MB

Download
memory/540-10-0x0000000008B50000-0x0000000008C10000-memory.dmp

Filesize
768KB

Download
memory/540-11-0x000000000AC10000-0x000000000ACAC000-memory.dmp

Filesize
624KB

Download
memory/540-3-0x0000000004D60000-0x0000000004DF2000-memory.dmp

Filesize
584KB

Download
memory/540-0-0x0000000073DEE000-0x0000000073DEF000-memory.dmp

Filesize
4KB

Download
memory/540-2-0x0000000005310000-0x00000000058B4000-memory.dmp

Filesize
5.6MB

Download
memory/540-1-0x00000000002A0000-0x00000000003A8000-memory.dmp

Filesize
1.0MB

Download
memory/2268-44-0x00000000062B0000-0x00000000062CE000-memory.dmp

Filesize
120KB

Download
memory/2268-61-0x0000000007640000-0x000000000764A000-memory.dmp

Filesize
40KB

Download
memory/2268-16-0x0000000073DE0000-0x0000000074590000-memory.dmp

Filesize
7.7MB

Download
memory/2268-73-0x0000000073DE0000-0x0000000074590000-memory.dmp

Filesize
7.7MB

Download
memory/2268-70-0x00000000078F0000-0x00000000078F8000-memory.dmp

Filesize
32KB

Download
memory/2268-69-0x0000000007910000-0x000000000792A000-memory.dmp

Filesize
104KB

Download
memory/2268-68-0x0000000007810000-0x0000000007824000-memory.dmp

Filesize
80KB

Download
memory/2268-33-0x0000000005C40000-0x0000000005CA6000-memory.dmp

Filesize
408KB

Download
memory/2268-32-0x0000000005BD0000-0x0000000005C36000-memory.dmp

Filesize
408KB

Download
memory/2268-31-0x0000000005B30000-0x0000000005B52000-memory.dmp

Filesize
136KB

Download
memory/2268-21-0x0000000073DE0000-0x0000000074590000-memory.dmp

Filesize
7.7MB

Download
memory/2268-34-0x0000000005CB0000-0x0000000006004000-memory.dmp

Filesize
3.3MB

Download
memory/2268-20-0x00000000053D0000-0x00000000059F8000-memory.dmp

Filesize
6.2MB

Download
memory/2268-17-0x00000000029D0000-0x0000000002A06000-memory.dmp

Filesize
216KB

Download
memory/2268-45-0x0000000006340000-0x000000000638C000-memory.dmp

Filesize
304KB

Download
memory/2268-46-0x0000000006870000-0x00000000068A2000-memory.dmp

Filesize
200KB

Download
memory/2268-47-0x00000000714E0000-0x000000007152C000-memory.dmp

Filesize
304KB

Download
memory/2268-57-0x0000000006850000-0x000000000686E000-memory.dmp

Filesize
120KB

Download
memory/2268-58-0x00000000074A0000-0x0000000007543000-memory.dmp

Filesize
652KB

Download
memory/2268-59-0x0000000007C20000-0x000000000829A000-memory.dmp

Filesize
6.5MB

Download
memory/2268-60-0x00000000075D0000-0x00000000075EA000-memory.dmp

Filesize
104KB

Download
memory/2268-18-0x0000000073DE0000-0x0000000074590000-memory.dmp

Filesize
7.7MB

Download
memory/2268-62-0x0000000007850000-0x00000000078E6000-memory.dmp

Filesize
600KB

Download
memory/2268-63-0x00000000077D0000-0x00000000077E1000-memory.dmp

Filesize
68KB

Download
memory/2268-66-0x0000000007800000-0x000000000780E000-memory.dmp

Filesize
56KB

Download
memory/4880-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-90-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-91-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-98-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-106-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4880-107-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download