remcos | 190c75b9994d5f5bf75f227a4de53392f834699f1e854eb9ac3728e029aea849

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-01-2024 06:20

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General

Target

81b032900fcb4e5cd13b226d13453cf4.exe
Size

4.9MB
MD5

81b032900fcb4e5cd13b226d13453cf4
SHA1

413133e303b5552958949c4bdf481f9c9c5c3324
SHA256

190c75b9994d5f5bf75f227a4de53392f834699f1e854eb9ac3728e029aea849
SHA512

cdbb1968cfa03053b82eed2bc2226bf58298128397971b2c7ec5141c5c873a19f36b0a36f2ae978bc621464d174a61c94e287f601caaa677fea2ef35a96582e6
SSDEEP

98304:3KvQ/bZR3d1y9eoPQihNcOTgOSFJ92wJV79FeVzjraGfIBvhVkhC2YtTV:3KvQVR3fyIooaNr8OS1JGvra2Yv

Score

10^/10

remcos un2 rat rezer0

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

un2

CEDSXoissLv2NiM.club:5762

PgqduOYXVZeNNam.xyz:5762

USd7O88wEMlUtX5.xyz:5762

pMfiryhhkiN98Px.xyz:5762

Se2Qwz60L2OxZNM.xyz:5762

GWtY0fiG58DCq6F.xyz:5762

maui16azsncpo97.info:5762

mj99puoba6c3gun.info:5762

tu90to3b4q4uqze.info:5762

cwt1u0vv8ic357ov.info:5762

agaoajz1hrvevre.info:5762

poykoqnl7jkj632.info:5762

cbiq1neygyp1wno.info:5762

BCBNcQ393Z3HPLQ.club:5762

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-18GB56
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
take_screenshot_title
wikipedia;solitaire;

Signatures

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

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral2/memory/2020-8-0x0000000006950000-0x000000000697E000-memory.dmp	rezer0

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

Processes:

81b032900fcb4e5cd13b226d13453cf4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	81b032900fcb4e5cd13b226d13453cf4.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

81b032900fcb4e5cd13b226d13453cf4.exe

description pid process target process

PID 2020 set thread context of 1112 2020 81b032900fcb4e5cd13b226d13453cf4.exe 81b032900fcb4e5cd13b226d13453cf4.exe
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/Job
T1053

Processes:

schtasks.exe

pid process

2308 schtasks.exe

description	pid	process	target process
PID 2020 set thread context of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe

pid	process
2308	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

81b032900fcb4e5cd13b226d13453cf4.exe

pid	process
2020	81b032900fcb4e5cd13b226d13453cf4.exe
2020	81b032900fcb4e5cd13b226d13453cf4.exe
2020	81b032900fcb4e5cd13b226d13453cf4.exe
2020	81b032900fcb4e5cd13b226d13453cf4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

81b032900fcb4e5cd13b226d13453cf4.exe

description pid process

Token: SeDebugPrivilege 2020 81b032900fcb4e5cd13b226d13453cf4.exe

description	pid	process
Token: SeDebugPrivilege	2020	81b032900fcb4e5cd13b226d13453cf4.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

81b032900fcb4e5cd13b226d13453cf4.exe

C:\Users\Admin\AppData\Local\Temp\81b032900fcb4e5cd13b226d13453cf4.exe
"C:\Users\Admin\AppData\Local\Temp\81b032900fcb4e5cd13b226d13453cf4.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2020

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KSridAySHa" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9D88.tmp"
2⤵
- Creates scheduled task(s)
PID:2308

C:\Users\Admin\AppData\Local\Temp\81b032900fcb4e5cd13b226d13453cf4.exe
"{path}"
2⤵
PID:4500

C:\Users\Admin\AppData\Local\Temp\81b032900fcb4e5cd13b226d13453cf4.exe
"{path}"
2⤵
PID:4816

C:\Users\Admin\AppData\Local\Temp\81b032900fcb4e5cd13b226d13453cf4.exe
"{path}"
2⤵
PID:1112

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9D88.tmp
Filesize
1KB

MD5
6608e864c1827d2a761379a3a6adc519

SHA1
47220cba05abaccf9a74951008202ca5e441ae05

SHA256
929982fc628f8e647ad5c95a5922dc42d1902ed2fe94a60082cb60c8dfdcff27

SHA512
0884c649cabd3ca1ad900a25835bc235f8c92266b36c6469358f6cbcb803c41ddb0e0cff4cf1cf396a07a66764daa4bf4f853392cd3d7eb92d6bf0714e214526

Download Submit
memory/1112-45-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-17-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-44-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-80-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-79-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-78-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-77-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-76-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-75-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-21-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-25-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-27-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-34-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-36-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-37-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-38-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-39-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-40-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-41-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-42-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-43-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-74-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-46-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-47-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-48-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-49-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-53-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-54-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-55-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-56-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-57-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-58-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-59-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-60-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-61-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-62-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-63-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-64-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-65-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-66-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-67-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-68-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-69-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-70-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-71-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-72-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1112-73-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2020-1-0x0000000000060000-0x0000000000552000-memory.dmp

Filesize
4.9MB

Download
memory/2020-7-0x00000000051F0000-0x00000000051F8000-memory.dmp

Filesize
32KB

Download
memory/2020-5-0x0000000005010000-0x000000000501A000-memory.dmp

Filesize
40KB

Download
memory/2020-4-0x00000000050C0000-0x00000000050D0000-memory.dmp

Filesize
64KB

Download
memory/2020-3-0x0000000004F70000-0x0000000005002000-memory.dmp

Filesize
584KB

Download
memory/2020-2-0x0000000005480000-0x0000000005A24000-memory.dmp

Filesize
5.6MB

Download
memory/2020-0-0x0000000074F30000-0x00000000756E0000-memory.dmp

Filesize
7.7MB

Download
memory/2020-6-0x00000000069B0000-0x0000000006A4C000-memory.dmp

Filesize
624KB

Download
memory/2020-8-0x0000000006950000-0x000000000697E000-memory.dmp

Filesize
184KB

Download
memory/2020-18-0x0000000074F30000-0x00000000756E0000-memory.dmp

Filesize
7.7MB

Download

description	pid	process	target process
PID 2020 wrote to memory of 2308	2020	81b032900fcb4e5cd13b226d13453cf4.exe	schtasks.exe
PID 2020 wrote to memory of 2308	2020	81b032900fcb4e5cd13b226d13453cf4.exe	schtasks.exe
PID 2020 wrote to memory of 2308	2020	81b032900fcb4e5cd13b226d13453cf4.exe	schtasks.exe
PID 2020 wrote to memory of 4500	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 4500	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 4500	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 4816	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 4816	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 4816	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe
PID 2020 wrote to memory of 1112	2020	81b032900fcb4e5cd13b226d13453cf4.exe	81b032900fcb4e5cd13b226d13453cf4.exe