remcos | 54debb804583fd9c34128aa6b8788b3e8b083002419d46cfe481c7f41f3dc88f

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2023, 12:02

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General

Target

Purchase Order PDF.exe
Size

943KB
MD5

fc4bef70dbd745248227567659e01bc9
SHA1

cb0769bb48a4b0de4249bd214d289b05be1bd8fe
SHA256

5af982e3e7bfb72f09c58c942243bda454f917bc5e0a5b048e579b2c5faa1085
SHA512

290aa61eab334d01575a82ed0cb879c93900132724a9e640e902916de1d4f1e262e0c81310563a2ab0099d62d18e90e50e5da780755f549a570d493bc78de518
SSDEEP

24576:Y1xfsuJFYnWWd9Agg4lqK3gKmi5Tb7io0:Yzfsfnj9AgpwKmATbWp

Score

10^/10

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

51.75.209.245:2406

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-52YOYG
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

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-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	Purchase Order PDF.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1284 set thread context of 2652	1284	Purchase Order PDF.exe	99

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

T1053

pid	Process
4580	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1284	Purchase Order PDF.exe
1284	Purchase Order PDF.exe
1284	Purchase Order PDF.exe
1284	Purchase Order PDF.exe
1284	Purchase Order PDF.exe
1284	Purchase Order PDF.exe
3688	powershell.exe
1284	Purchase Order PDF.exe
4036	powershell.exe
3688	powershell.exe
4036	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1284	Purchase Order PDF.exe
Token: SeDebugPrivilege	3688	powershell.exe
Token: SeDebugPrivilege	4036	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2652	Purchase Order PDF.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1284 wrote to memory of 4036	1284	Purchase Order PDF.exe	93
PID 1284 wrote to memory of 4036	1284	Purchase Order PDF.exe	93
PID 1284 wrote to memory of 4036	1284	Purchase Order PDF.exe	93
PID 1284 wrote to memory of 3688	1284	Purchase Order PDF.exe	95
PID 1284 wrote to memory of 3688	1284	Purchase Order PDF.exe	95
PID 1284 wrote to memory of 3688	1284	Purchase Order PDF.exe	95
PID 1284 wrote to memory of 4580	1284	Purchase Order PDF.exe	98
PID 1284 wrote to memory of 4580	1284	Purchase Order PDF.exe	98
PID 1284 wrote to memory of 4580	1284	Purchase Order PDF.exe	98
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99
PID 1284 wrote to memory of 2652	1284	Purchase Order PDF.exe	99

C:\Users\Admin\AppData\Local\Temp\Purchase Order PDF.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order PDF.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Purchase Order PDF.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4036
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\HjJHjavr.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3688
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HjJHjavr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp568C.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4580
- C:\Users\Admin\AppData\Local\Temp\Purchase Order PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase Order PDF.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
f1d096db95a2b0848213effc1227aba6

SHA1
784e3066f0799af39214438cb69d1c26beb39915

SHA256
085fdb4d30080fbcb0931d9c48391367e1d54dd6bc9b7555fe910420a4110e37

SHA512
185aa991736273dcaf302c6e8595c2ee987754497fca7116c6831effa827954eca7c16fd51f04ea18eb4ec125f65c078491cb3f00495d23f77f2cf3e2bc1d81e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yb5hf5jp.boh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp568C.tmp

Filesize
1KB

MD5
8d179629440f6930f7a47ddb04ac002d

SHA1
7f17646b5b04bd1f8cc0d001410db7f605bb5249

SHA256
dc896cb89027137376461dc49d538a7f62cbaf19bd008798b0c03026a985fc01

SHA512
288111c99d02a979e94c5381208ddfe4f293080fc7c0adc57ae5217fee288a808794289b52ef4421ffaf435af3bd187fed2291d094f85ae527839454fcafa200

Download Submit
memory/1284-139-0x0000000005FA0000-0x000000000603C000-memory.dmp

Filesize
624KB

Download
memory/1284-137-0x00000000051D0000-0x00000000051DA000-memory.dmp

Filesize
40KB

Download
memory/1284-138-0x0000000005220000-0x0000000005230000-memory.dmp

Filesize
64KB

Download
memory/1284-133-0x0000000000630000-0x0000000000722000-memory.dmp

Filesize
968KB

Download
memory/1284-134-0x00000000055A0000-0x0000000005B44000-memory.dmp

Filesize
5.6MB

Download
memory/1284-135-0x00000000050D0000-0x0000000005162000-memory.dmp

Filesize
584KB

Download
memory/1284-136-0x0000000005220000-0x0000000005230000-memory.dmp

Filesize
64KB

Download
memory/2652-230-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-156-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-151-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-236-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-237-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-154-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-242-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-229-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-243-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-148-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-169-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-170-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-224-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-171-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-223-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-220-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2652-182-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3688-183-0x00000000051B0000-0x00000000051C0000-memory.dmp

Filesize
64KB

Download
memory/3688-162-0x0000000005EC0000-0x0000000005F26000-memory.dmp

Filesize
408KB

Download
memory/3688-185-0x0000000006B80000-0x0000000006BB2000-memory.dmp

Filesize
200KB

Download
memory/3688-187-0x0000000071D60000-0x0000000071DAC000-memory.dmp

Filesize
304KB

Download
memory/3688-153-0x00000000051B0000-0x00000000051C0000-memory.dmp

Filesize
64KB

Download
memory/3688-206-0x0000000006B60000-0x0000000006B7E000-memory.dmp

Filesize
120KB

Download
memory/3688-152-0x0000000005E20000-0x0000000005E42000-memory.dmp

Filesize
136KB

Download
memory/3688-208-0x00000000078B0000-0x00000000078CA000-memory.dmp

Filesize
104KB

Download
memory/3688-209-0x0000000007920000-0x000000000792A000-memory.dmp

Filesize
40KB

Download
memory/3688-210-0x000000007F390000-0x000000007F3A0000-memory.dmp

Filesize
64KB

Download
memory/3688-150-0x00000000051B0000-0x00000000051C0000-memory.dmp

Filesize
64KB

Download
memory/3688-212-0x0000000007B30000-0x0000000007BC6000-memory.dmp

Filesize
600KB

Download
memory/3688-213-0x0000000007AE0000-0x0000000007AEE000-memory.dmp

Filesize
56KB

Download
memory/4036-214-0x0000000007090000-0x00000000070AA000-memory.dmp

Filesize
104KB

Download
memory/4036-215-0x0000000007070000-0x0000000007078000-memory.dmp

Filesize
32KB

Download
memory/4036-181-0x0000000005A40000-0x0000000005A5E000-memory.dmp

Filesize
120KB

Download
memory/4036-149-0x00000000046B0000-0x00000000046C0000-memory.dmp

Filesize
64KB

Download
memory/4036-211-0x000000007F000000-0x000000007F010000-memory.dmp

Filesize
64KB

Download
memory/4036-163-0x0000000005400000-0x0000000005466000-memory.dmp

Filesize
408KB

Download
memory/4036-184-0x00000000046B0000-0x00000000046C0000-memory.dmp

Filesize
64KB

Download
memory/4036-207-0x00000000073A0000-0x0000000007A1A000-memory.dmp

Filesize
6.5MB

Download
memory/4036-186-0x0000000071D60000-0x0000000071DAC000-memory.dmp

Filesize
304KB

Download
memory/4036-147-0x00000000046B0000-0x00000000046C0000-memory.dmp

Filesize
64KB

Download
memory/4036-145-0x0000000004CF0000-0x0000000005318000-memory.dmp

Filesize
6.2MB

Download
memory/4036-144-0x0000000002110000-0x0000000002146000-memory.dmp

Filesize
216KB

Download