remcos | 683843fe257ddca12e864696830448bc04e7eeb9ab53e42dc185d898462c85fa

Analysis

max time kernel
147s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2023, 10:54

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General

Target

XZD.exe
Size

956KB
MD5

332638c6639e013b5bba729b78b9c234
SHA1

31b7ad142dfef57d6f8becc4b7b6528c67617827
SHA256

683843fe257ddca12e864696830448bc04e7eeb9ab53e42dc185d898462c85fa
SHA512

55f9d2def37094bdeb7ca0d59f2869a0ce44725fbddf35e891a466ff0b2cdbb7396a0e60112a9e2b3c88cfd2c15904b2425c43c526fee64de1fc1b6e45b24cf0
SSDEEP

24576:isXMIyXL8g2DGwmie5K7lvHLZtVmeTk/u+UqCoKfD+eJKV6Z:Lmd2DG/15KxvzTh+UqRKr0V

Score

10^/10

remcos awele-host persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Awele-Host

gdyhjjdhbvxgsfe.gotdns.ch:2718

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
qos.exe
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
Rmc-VC3F2C
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Jm
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 2 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	XZD.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
3324	qos.exe
1432	qos.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	XZD.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Jm = "\"C:\\Users\\Admin\\AppData\\Roaming\\qos.exe\""	XZD.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows\CurrentVersion\Run\	qos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Jm = "\"C:\\Users\\Admin\\AppData\\Roaming\\qos.exe\""	qos.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	qos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Jm = "\"C:\\Users\\Admin\\AppData\\Roaming\\qos.exe\""	qos.exe
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows\CurrentVersion\Run\	XZD.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Jm = "\"C:\\Users\\Admin\\AppData\\Roaming\\qos.exe\""	XZD.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4508 set thread context of 652	4508	XZD.exe	91
PID 3324 set thread context of 1432	3324	qos.exe	96

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000_Classes\Local Settings	XZD.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1432	qos.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 4508 wrote to memory of 652	4508	XZD.exe	91
PID 652 wrote to memory of 4372	652	XZD.exe	92
PID 652 wrote to memory of 4372	652	XZD.exe	92
PID 652 wrote to memory of 4372	652	XZD.exe	92
PID 4372 wrote to memory of 2276	4372	WScript.exe	93
PID 4372 wrote to memory of 2276	4372	WScript.exe	93
PID 4372 wrote to memory of 2276	4372	WScript.exe	93
PID 2276 wrote to memory of 3324	2276	cmd.exe	95
PID 2276 wrote to memory of 3324	2276	cmd.exe	95
PID 2276 wrote to memory of 3324	2276	cmd.exe	95
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96
PID 3324 wrote to memory of 1432	3324	qos.exe	96

C:\Users\Admin\AppData\Local\Temp\XZD.exe
"C:\Users\Admin\AppData\Local\Temp\XZD.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Users\Admin\AppData\Local\Temp\XZD.exe
  "C:\Users\Admin\AppData\Local\Temp\XZD.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:652
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\nkptfhkvwrmyxlqi.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:4372
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\qos.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2276
    - - C:\Users\Admin\AppData\Roaming\qos.exe
        
        C:\Users\Admin\AppData\Roaming\qos.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:3324
      - C:\Users\Admin\AppData\Roaming\qos.exe
        
        "C:\Users\Admin\AppData\Roaming\qos.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of SetWindowsHookEx
        
        PID:1432

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nkptfhkvwrmyxlqi.vbs

Filesize
398B

MD5
8e2a1197a839a92a232ec1bc06a9cf69

SHA1
a501c184e874983afccbde838f3260dfb7d62527

SHA256
e10a418a00a6de27cf1c4b5e46f7543c290afc801835efa99b633ee3d75f7571

SHA512
26a35fa937a7d63f120b40331ed6370832d690d49b5cc0aa74350f9a7eaefa9f6433df6647ef5974a5de3ac055841166cf5543eb4002d831ecac05c3c896eaaf

Download Submit
C:\Users\Admin\AppData\Roaming\qos.exe

Filesize
956KB

MD5
332638c6639e013b5bba729b78b9c234

SHA1
31b7ad142dfef57d6f8becc4b7b6528c67617827

SHA256
683843fe257ddca12e864696830448bc04e7eeb9ab53e42dc185d898462c85fa

SHA512
55f9d2def37094bdeb7ca0d59f2869a0ce44725fbddf35e891a466ff0b2cdbb7396a0e60112a9e2b3c88cfd2c15904b2425c43c526fee64de1fc1b6e45b24cf0

Download Submit
C:\Users\Admin\AppData\Roaming\qos.exe

Filesize
956KB

MD5
332638c6639e013b5bba729b78b9c234

SHA1
31b7ad142dfef57d6f8becc4b7b6528c67617827

SHA256
683843fe257ddca12e864696830448bc04e7eeb9ab53e42dc185d898462c85fa

SHA512
55f9d2def37094bdeb7ca0d59f2869a0ce44725fbddf35e891a466ff0b2cdbb7396a0e60112a9e2b3c88cfd2c15904b2425c43c526fee64de1fc1b6e45b24cf0

Download Submit
C:\Users\Admin\AppData\Roaming\qos.exe

Filesize
956KB

MD5
332638c6639e013b5bba729b78b9c234

SHA1
31b7ad142dfef57d6f8becc4b7b6528c67617827

SHA256
683843fe257ddca12e864696830448bc04e7eeb9ab53e42dc185d898462c85fa

SHA512
55f9d2def37094bdeb7ca0d59f2869a0ce44725fbddf35e891a466ff0b2cdbb7396a0e60112a9e2b3c88cfd2c15904b2425c43c526fee64de1fc1b6e45b24cf0

Download Submit
memory/652-142-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/652-143-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/652-148-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/652-140-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-165-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-166-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-177-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-176-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-175-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-172-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-171-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-170-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-167-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-158-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-159-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-160-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-162-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-163-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-164-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3324-154-0x0000000005520000-0x0000000005530000-memory.dmp

Filesize
64KB

Download
memory/3324-153-0x0000000005520000-0x0000000005530000-memory.dmp

Filesize
64KB

Download
memory/4508-138-0x0000000005600000-0x0000000005610000-memory.dmp

Filesize
64KB

Download
memory/4508-133-0x0000000000CA0000-0x0000000000D96000-memory.dmp

Filesize
984KB

Download
memory/4508-134-0x0000000005AD0000-0x0000000006074000-memory.dmp

Filesize
5.6MB

Download
memory/4508-135-0x0000000005610000-0x00000000056A2000-memory.dmp

Filesize
584KB

Download
memory/4508-136-0x00000000057C0000-0x00000000057CA000-memory.dmp

Filesize
40KB

Download
memory/4508-137-0x0000000005600000-0x0000000005610000-memory.dmp

Filesize
64KB

Download
memory/4508-139-0x0000000006EF0000-0x0000000006F8C000-memory.dmp

Filesize
624KB

Download