remcos | 9fca9b35737fe01eb61384f3983adc3d49fc2bdd51e677bea1ac57973b8e86c0

General

Target

HBL+BL SHIPPING DOCUMENTS.exe
Size

814KB
MD5

baea8f92a509da346b2785803537713d
SHA1

35ec1fce1fd39a8fad37e88ccb25c859fc21b297
SHA256

f8e75ae7b73058c83d8e49afd902e29dbd5dc808017d7ec736a8f1aa0ad88c51
SHA512

ecc34f5cc2f8e79096a44ec235dccc2fb3f7e0e280553be51d5d2397d7c24ad2dc8ca899da6db6ea70e60fee280302fcf317efacc14603a277f642f79b0b79f1

Score

10^/10

remcos remotehost evasion rat

Malware Config

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

RemoteHost

C2

172.94.88.26:3033

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-LNYWHZ
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
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

HBL+BL SHIPPING DOCUMENTS.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	HBL+BL SHIPPING DOCUMENTS.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	HBL+BL SHIPPING DOCUMENTS.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

HBL+BL SHIPPING DOCUMENTS.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	HBL+BL SHIPPING DOCUMENTS.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	HBL+BL SHIPPING DOCUMENTS.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

HBL+BL SHIPPING DOCUMENTS.exe

description pid process target process

PID 2164 set thread context of 1756 2164 HBL+BL SHIPPING DOCUMENTS.exe RegSvcs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exe

pid process

3772 powershell.exe
3772 powershell.exe
3772 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 3772 powershell.exe

description	pid	process	target process
PID 2164 set thread context of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe

pid	process
3772	powershell.exe
3772	powershell.exe
3772	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3772	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

HBL+BL SHIPPING DOCUMENTS.exe

description	pid	process	target process
PID 2164 wrote to memory of 3772	2164	HBL+BL SHIPPING DOCUMENTS.exe	powershell.exe
PID 2164 wrote to memory of 3772	2164	HBL+BL SHIPPING DOCUMENTS.exe	powershell.exe
PID 2164 wrote to memory of 3772	2164	HBL+BL SHIPPING DOCUMENTS.exe	powershell.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe
PID 2164 wrote to memory of 1756	2164	HBL+BL SHIPPING DOCUMENTS.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\HBL+BL SHIPPING DOCUMENTS.exe
"C:\Users\Admin\AppData\Local\Temp\HBL+BL SHIPPING DOCUMENTS.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2164

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\HBL+BL SHIPPING DOCUMENTS.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3772

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
PID:1756

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1756-132-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1756-138-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1756-133-0x000000000042FC39-mapping.dmp

Download
memory/2164-117-0x00000000093B0000-0x00000000093B1000-memory.dmp

Filesize
4KB

Download
memory/2164-118-0x0000000004BD0000-0x0000000004BD1000-memory.dmp

Filesize
4KB

Download
memory/2164-119-0x0000000004D80000-0x0000000004D81000-memory.dmp

Filesize
4KB

Download
memory/2164-120-0x0000000004B90000-0x0000000004B91000-memory.dmp

Filesize
4KB

Download
memory/2164-121-0x0000000004F70000-0x0000000004F77000-memory.dmp

Filesize
28KB

Download
memory/2164-122-0x0000000009310000-0x0000000009311000-memory.dmp

Filesize
4KB

Download
memory/2164-123-0x00000000099F0000-0x0000000009A85000-memory.dmp

Filesize
596KB

Download
memory/2164-115-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2164-125-0x0000000006F20000-0x0000000006F21000-memory.dmp

Filesize
4KB

Download
memory/3772-124-0x0000000000000000-mapping.dmp

Download
memory/3772-127-0x0000000000C40000-0x0000000000C41000-memory.dmp

Filesize
4KB

Download
memory/3772-130-0x0000000004380000-0x0000000004381000-memory.dmp

Filesize
4KB

Download
memory/3772-131-0x0000000004382000-0x0000000004383000-memory.dmp

Filesize
4KB

Download
memory/3772-128-0x0000000004230000-0x0000000004231000-memory.dmp

Filesize
4KB

Download
memory/3772-126-0x0000000000C40000-0x0000000000C41000-memory.dmp

Filesize
4KB

Download
memory/3772-134-0x0000000006C40000-0x0000000006C41000-memory.dmp

Filesize
4KB

Download
memory/3772-135-0x0000000007540000-0x0000000007541000-memory.dmp

Filesize
4KB

Download
memory/3772-137-0x00000000075B0000-0x00000000075B1000-memory.dmp

Filesize
4KB

Download
memory/3772-129-0x0000000006DA0000-0x0000000006DA1000-memory.dmp

Filesize
4KB

Download
memory/3772-139-0x0000000007500000-0x0000000007501000-memory.dmp

Filesize
4KB

Download
memory/3772-140-0x0000000007D30000-0x0000000007D31000-memory.dmp

Filesize
4KB

Download
memory/3772-141-0x0000000007D80000-0x0000000007D81000-memory.dmp

Filesize
4KB

Download
memory/3772-142-0x0000000000C40000-0x0000000000C41000-memory.dmp

Filesize
4KB

Download
memory/3772-149-0x0000000008CC0000-0x0000000008CF3000-memory.dmp

Filesize
204KB

Download
memory/3772-156-0x0000000008CA0000-0x0000000008CA1000-memory.dmp

Filesize
4KB

Download
memory/3772-161-0x0000000008DF0000-0x0000000008DF1000-memory.dmp

Filesize
4KB

Download
memory/3772-162-0x0000000008FD0000-0x0000000008FD1000-memory.dmp

Filesize
4KB

Download
memory/3772-163-0x000000007E4A0000-0x000000007E4A1000-memory.dmp

Filesize
4KB

Download
memory/3772-164-0x0000000004383000-0x0000000004384000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads