remcos | 0dbc322586fa9f92b727134d3b497df20b5629a21404f00cea9873382a7ac4c8

General

Target

Ordre d?achat SZ5-9-020,pdf.exe
Size

363KB
MD5

6932391f4b0a51e31f16b26c44e2c437
SHA1

0056033f60670d99465691ff44301885a5dad5e2
SHA256

3dc72f904d94fdf5e6cbb0fa1d4055cf7caca8f700c965f7fda9729494a30456
SHA512

899594e17920791b29f1347fbf13175d532cd578eefe93cd4e4b7219234fb3140b3b0f192f7d6262a284573c185472ed81ae77711e7491dea55361187f2758df

Score

10^/10

remcos remotehost coreentity rat rezer0

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

RemoteHost

C2

experience2477.ddns.net:1965

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-MCNA55
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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1504-56-0x00000000003E0000-0x00000000003E8000-memory.dmp	coreentity

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
behavioral1/memory/1504-57-0x0000000001F80000-0x0000000001FAC000-memory.dmp	rezer0

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

Ordre d_achat SZ5-9-020,pdf.exe

description pid process target process

PID 1504 set thread context of 1984 1504 Ordre d_achat SZ5-9-020,pdf.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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

Processes:

schtasks.exe

pid process

1496 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Ordre d_achat SZ5-9-020,pdf.exe

pid process

1504 Ordre d_achat SZ5-9-020,pdf.exe
1504 Ordre d_achat SZ5-9-020,pdf.exe
1504 Ordre d_achat SZ5-9-020,pdf.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Ordre d_achat SZ5-9-020,pdf.exe

description pid process

Token: SeDebugPrivilege 1504 Ordre d_achat SZ5-9-020,pdf.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

1984 vbc.exe

description	pid	process	target process
PID 1504 set thread context of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe

pid	process
1496	schtasks.exe

pid	process
1504	Ordre d_achat SZ5-9-020,pdf.exe
1504	Ordre d_achat SZ5-9-020,pdf.exe
1504	Ordre d_achat SZ5-9-020,pdf.exe

description	pid	process
Token: SeDebugPrivilege	1504	Ordre d_achat SZ5-9-020,pdf.exe

pid	process
1984	vbc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

Ordre d_achat SZ5-9-020,pdf.exe

description	pid	process	target process
PID 1504 wrote to memory of 1496	1504	Ordre d_achat SZ5-9-020,pdf.exe	schtasks.exe
PID 1504 wrote to memory of 1496	1504	Ordre d_achat SZ5-9-020,pdf.exe	schtasks.exe
PID 1504 wrote to memory of 1496	1504	Ordre d_achat SZ5-9-020,pdf.exe	schtasks.exe
PID 1504 wrote to memory of 1496	1504	Ordre d_achat SZ5-9-020,pdf.exe	schtasks.exe
PID 1504 wrote to memory of 2020	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 2020	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 2020	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 2020	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1996	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1996	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1996	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1996	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe
PID 1504 wrote to memory of 1984	1504	Ordre d_achat SZ5-9-020,pdf.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\Ordre d_achat SZ5-9-020,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Ordre d_achat SZ5-9-020,pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1504

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RxXOVfqUm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3B8B.tmp"
2⤵
- Creates scheduled task(s)
PID:1496

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
2⤵
PID:2020

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
2⤵
PID:1996

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
2⤵
- Suspicious use of SetWindowsHookEx
PID:1984

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3B8B.tmp
Filesize
1KB

MD5
187f94029fd58b63a17c0db39bf4126d

SHA1
4efcd8c3807c1f6603dfedfa80163ea331ac4ffa

SHA256
438b92efa10097537b15cfd68d3a1efd7cecb8a5f4b590fb66b18caca6699ba5

SHA512
ae71a9a5762bd37f536fbc6490b2435a06815f93e979b1ac4f0e480363b56bb016d686806620d7241b28414854f4c5bd87191213ca2c95dd8b6c6ee13d959331

Download Submit
memory/1496-58-0x0000000000000000-mapping.dmp

Download
memory/1504-54-0x00000000008B0000-0x0000000000910000-memory.dmp

Filesize
384KB

Download
memory/1504-55-0x0000000076561000-0x0000000076563000-memory.dmp

Filesize
8KB

Download
memory/1504-56-0x00000000003E0000-0x00000000003E8000-memory.dmp

Filesize
32KB

Download
memory/1504-57-0x0000000001F80000-0x0000000001FAC000-memory.dmp

Filesize
176KB

Download
memory/1984-63-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1984-61-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1984-60-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1984-65-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1984-66-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1984-67-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1984-69-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1984-70-0x0000000000413A84-mapping.dmp

Download
memory/1984-73-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1984-74-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads