remcos | 0b2b9a03881b2a49d79df2c6a19d12cf076a031080698b8c4bce87bb8252b277

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-12-2024 05:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Ref#60031796.exe
Size

977KB
MD5

6525d1510016959c65676fca54680b6e
SHA1

d4a544d1fc0690a2309fe0223bd31529e44a7355
SHA256

0b2b9a03881b2a49d79df2c6a19d12cf076a031080698b8c4bce87bb8252b277
SHA512

b57c0aaba41a992c08af93a8c1e0cd05f9553cb86945fcafce80553b5fdd754de50d25a9bee516d5eeb5bf3b2583eb1013787f8d10a4a1c0bcd891638116ea81
SSDEEP

24576:1dhlcW4SeNmOKIc8dJ8UiAtXLN1ovIqPc5/aGvseec:BCW4SGKIc0J8Uig3owC8/R

Score

10^/10

remcos hdyebf discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

hdyebf

decmainserver.webredirect.org:45682

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
46875-RPQWNM
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
1364	powershell.exe

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	Ref#60031796.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 708 set thread context of 2444	708	Ref#60031796.exe	94

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 4 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	Ref#60031796.exe
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	Ref#60031796.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
4712	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1364	powershell.exe
1364	powershell.exe
708	Ref#60031796.exe
708	Ref#60031796.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1364	powershell.exe
Token: SeDebugPrivilege	708	Ref#60031796.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 708 wrote to memory of 1364	708	Ref#60031796.exe	89
PID 708 wrote to memory of 1364	708	Ref#60031796.exe	89
PID 708 wrote to memory of 1364	708	Ref#60031796.exe	89
PID 708 wrote to memory of 4712	708	Ref#60031796.exe	91
PID 708 wrote to memory of 4712	708	Ref#60031796.exe	91
PID 708 wrote to memory of 4712	708	Ref#60031796.exe	91
PID 708 wrote to memory of 3200	708	Ref#60031796.exe	93
PID 708 wrote to memory of 3200	708	Ref#60031796.exe	93
PID 708 wrote to memory of 3200	708	Ref#60031796.exe	93
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94
PID 708 wrote to memory of 2444	708	Ref#60031796.exe	94

C:\Users\Admin\AppData\Local\Temp\Ref#60031796.exe
"C:\Users\Admin\AppData\Local\Temp\Ref#60031796.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:708
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\exrkAaatqQX.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1364
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\exrkAaatqQX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1345.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4712
- C:\Users\Admin\AppData\Local\Temp\Ref#60031796.exe
  "C:\Users\Admin\AppData\Local\Temp\Ref#60031796.exe"
  2⤵
  PID:3200
- C:\Users\Admin\AppData\Local\Temp\Ref#60031796.exe
  "C:\Users\Admin\AppData\Local\Temp\Ref#60031796.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2444

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hzn1f23i.3gx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1345.tmp

Filesize
1KB

MD5
c62be629ed9abb74227692e871f7000a

SHA1
37c6bc447d8b33317720483bcc79ef6eca44b9f0

SHA256
e6824369fa23390d0c1add5878339d7b42d78596a120a67c6963ad1b8cc5da20

SHA512
9a91d8454f0fa9409de9f8d5fd78b4d5b97e6c8c66b0a648d588e62ba34edb4bf7ac48e39c0f758cbf5348ab35141fc3fc7112dfac5f09d85ef854aea9172291

Download Submit
memory/708-6-0x00000000051A0000-0x00000000051BE000-memory.dmp

Filesize
120KB

Download
memory/708-3-0x0000000005080000-0x0000000005112000-memory.dmp

Filesize
584KB

Download
memory/708-4-0x0000000005000000-0x000000000500A000-memory.dmp

Filesize
40KB

Download
memory/708-5-0x0000000074A80000-0x0000000075230000-memory.dmp

Filesize
7.7MB

Download
memory/708-2-0x0000000005630000-0x0000000005BD4000-memory.dmp

Filesize
5.6MB

Download
memory/708-7-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/708-8-0x0000000074A80000-0x0000000075230000-memory.dmp

Filesize
7.7MB

Download
memory/708-9-0x0000000008150000-0x0000000008210000-memory.dmp

Filesize
768KB

Download
memory/708-10-0x000000000ACB0000-0x000000000AD4C000-memory.dmp

Filesize
624KB

Download
memory/708-0-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/708-42-0x0000000074A80000-0x0000000075230000-memory.dmp

Filesize
7.7MB

Download
memory/708-1-0x0000000000500000-0x00000000005FA000-memory.dmp

Filesize
1000KB

Download
memory/1364-66-0x00000000073E0000-0x00000000073F1000-memory.dmp

Filesize
68KB

Download
memory/1364-69-0x0000000007520000-0x000000000753A000-memory.dmp

Filesize
104KB

Download
memory/1364-19-0x0000000074A80000-0x0000000075230000-memory.dmp

Filesize
7.7MB

Download
memory/1364-21-0x00000000058A0000-0x0000000005906000-memory.dmp

Filesize
408KB

Download
memory/1364-17-0x0000000074A80000-0x0000000075230000-memory.dmp

Filesize
7.7MB

Download
memory/1364-20-0x00000000057C0000-0x0000000005826000-memory.dmp

Filesize
408KB

Download
memory/1364-31-0x0000000005A10000-0x0000000005D64000-memory.dmp

Filesize
3.3MB

Download
memory/1364-32-0x0000000005EB0000-0x0000000005ECE000-memory.dmp

Filesize
120KB

Download
memory/1364-34-0x0000000005EF0000-0x0000000005F3C000-memory.dmp

Filesize
304KB

Download
memory/1364-16-0x00000000050B0000-0x00000000056D8000-memory.dmp

Filesize
6.2MB

Download
memory/1364-73-0x0000000074A80000-0x0000000075230000-memory.dmp

Filesize
7.7MB

Download
memory/1364-18-0x0000000005720000-0x0000000005742000-memory.dmp

Filesize
136KB

Download
memory/1364-70-0x0000000007500000-0x0000000007508000-memory.dmp

Filesize
32KB

Download
memory/1364-63-0x00000000071E0000-0x00000000071FA000-memory.dmp

Filesize
104KB

Download
memory/1364-15-0x0000000074A80000-0x0000000075230000-memory.dmp

Filesize
7.7MB

Download
memory/1364-68-0x0000000007420000-0x0000000007434000-memory.dmp

Filesize
80KB

Download
memory/1364-67-0x0000000007410000-0x000000000741E000-memory.dmp

Filesize
56KB

Download
memory/1364-14-0x00000000025A0000-0x00000000025D6000-memory.dmp

Filesize
216KB

Download
memory/1364-65-0x0000000007460000-0x00000000074F6000-memory.dmp

Filesize
600KB

Download
memory/1364-48-0x000000006F2C0000-0x000000006F30C000-memory.dmp

Filesize
304KB

Download
memory/1364-47-0x00000000064A0000-0x00000000064D2000-memory.dmp

Filesize
200KB

Download
memory/1364-64-0x0000000007250000-0x000000000725A000-memory.dmp

Filesize
40KB

Download
memory/1364-58-0x0000000006470000-0x000000000648E000-memory.dmp

Filesize
120KB

Download
memory/1364-59-0x0000000007100000-0x00000000071A3000-memory.dmp

Filesize
652KB

Download
memory/1364-62-0x0000000007830000-0x0000000007EAA000-memory.dmp

Filesize
6.5MB

Download
memory/2444-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2444-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download