remcos | 1c2a5b8fae11f7c10d52ad7844ce50c1e45deb88bdb83063e087abeeead69bf8

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 15:40

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General

Target

DHL AWB_NO_90785388091.scr
Size

1.0MB
MD5

ad02c1d63098791b74efafd0f684956e
SHA1

8036d3f0acfc9aaa164b8a7e8af64e6068a492c7
SHA256

8111eaa8541605d148824165100a381556716c3c73aadee3f938bfc036756863
SHA512

5b276c9651f2858cbfe2109733e9d93ec735d7687289bf53b921cfc2002e216ba551136270c5d292a3c829582ffef7c92cbb17f25c5e089148c3517fef457b3b
SSDEEP

24576:kLu2uOrtwKPRr/6f3ffazcU3nkTTeZi64UX+FUX0lojqIu2:klu0wSYfEc4kfezXKUP

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
464	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	DHL AWB_NO_90785388091.scr

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4476 set thread context of 4460	4476	DHL AWB_NO_90785388091.scr	91

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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DHL AWB_NO_90785388091.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DHL AWB_NO_90785388091.scr

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
3472	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
464	powershell.exe
464	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	464	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4476 wrote to memory of 464	4476	DHL AWB_NO_90785388091.scr	86
PID 4476 wrote to memory of 464	4476	DHL AWB_NO_90785388091.scr	86
PID 4476 wrote to memory of 464	4476	DHL AWB_NO_90785388091.scr	86
PID 4476 wrote to memory of 3472	4476	DHL AWB_NO_90785388091.scr	88
PID 4476 wrote to memory of 3472	4476	DHL AWB_NO_90785388091.scr	88
PID 4476 wrote to memory of 3472	4476	DHL AWB_NO_90785388091.scr	88
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91
PID 4476 wrote to memory of 4460	4476	DHL AWB_NO_90785388091.scr	91

C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_90785388091.scr
"C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_90785388091.scr" /S
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4476
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WaZnHi.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:464
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WaZnHi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF954.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3472
- C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_90785388091.scr
  "C:\Users\Admin\AppData\Local\Temp\DHL AWB_NO_90785388091.scr"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4460

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ynxfalct.shq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF954.tmp

Filesize
1KB

MD5
3018fd13d7f7e0a47c9be84a03eb73fc

SHA1
caba0d85a863d11ce4973e6a193bc331852d046d

SHA256
5a4638c0cad6d5c85d0705021188ac966fc4d961112cacdeccc1271df59ce8a2

SHA512
317523a0a9d939f110d8f55a97fa211b9c7dfa96952b41f52298e73cafe56f8c22bdff20c5b4fa9434e81bd36052678cdda6f841007357bf26eb280b558d5c62

Download Submit
memory/464-65-0x00000000079C0000-0x0000000007A56000-memory.dmp

Filesize
600KB

Download
memory/464-62-0x0000000007D80000-0x00000000083FA000-memory.dmp

Filesize
6.5MB

Download
memory/464-73-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/464-70-0x0000000007A60000-0x0000000007A68000-memory.dmp

Filesize
32KB

Download
memory/464-69-0x0000000007A80000-0x0000000007A9A000-memory.dmp

Filesize
104KB

Download
memory/464-68-0x0000000007980000-0x0000000007994000-memory.dmp

Filesize
80KB

Download
memory/464-67-0x0000000007970000-0x000000000797E000-memory.dmp

Filesize
56KB

Download
memory/464-66-0x0000000007940000-0x0000000007951000-memory.dmp

Filesize
68KB

Download
memory/464-64-0x00000000077B0000-0x00000000077BA000-memory.dmp

Filesize
40KB

Download
memory/464-15-0x0000000004E60000-0x0000000004E96000-memory.dmp

Filesize
216KB

Download
memory/464-16-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/464-18-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/464-17-0x0000000005640000-0x0000000005C68000-memory.dmp

Filesize
6.2MB

Download
memory/464-63-0x0000000007740000-0x000000000775A000-memory.dmp

Filesize
104KB

Download
memory/464-20-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/464-34-0x0000000005E60000-0x0000000005EC6000-memory.dmp

Filesize
408KB

Download
memory/464-26-0x0000000005CA0000-0x0000000005CC2000-memory.dmp

Filesize
136KB

Download
memory/464-61-0x00000000073E0000-0x0000000007483000-memory.dmp

Filesize
652KB

Download
memory/464-60-0x0000000007380000-0x000000000739E000-memory.dmp

Filesize
120KB

Download
memory/464-50-0x000000006F250000-0x000000006F29C000-memory.dmp

Filesize
304KB

Download
memory/464-49-0x00000000073A0000-0x00000000073D2000-memory.dmp

Filesize
200KB

Download
memory/464-39-0x0000000005FB0000-0x0000000006304000-memory.dmp

Filesize
3.3MB

Download
memory/464-43-0x00000000064C0000-0x000000000650C000-memory.dmp

Filesize
304KB

Download
memory/464-35-0x0000000005F40000-0x0000000005FA6000-memory.dmp

Filesize
408KB

Download
memory/464-40-0x0000000006400000-0x000000000641E000-memory.dmp

Filesize
120KB

Download
memory/4460-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4460-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4476-7-0x00000000070A0000-0x00000000070C6000-memory.dmp

Filesize
152KB

Download
memory/4476-6-0x0000000005C10000-0x0000000005CAC000-memory.dmp

Filesize
624KB

Download
memory/4476-5-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4476-4-0x0000000005B20000-0x0000000005B2A000-memory.dmp

Filesize
40KB

Download
memory/4476-3-0x0000000005980000-0x0000000005A12000-memory.dmp

Filesize
584KB

Download
memory/4476-8-0x000000007494E000-0x000000007494F000-memory.dmp

Filesize
4KB

Download
memory/4476-9-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4476-0-0x000000007494E000-0x000000007494F000-memory.dmp

Filesize
4KB

Download
memory/4476-10-0x000000000AF90000-0x000000000B050000-memory.dmp

Filesize
768KB

Download
memory/4476-2-0x0000000005F30000-0x00000000064D4000-memory.dmp

Filesize
5.6MB

Download
memory/4476-1-0x0000000000ED0000-0x0000000000FD8000-memory.dmp

Filesize
1.0MB

Download
memory/4476-41-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download