remcos | 3536f79b815a6d77e371df48abaec315c92ccec6e197e547440fa66629edd640

General

Target

BL-INVOICE SHIPPING DOCS.exe
Size

726KB
MD5

fdd9b67bd04d1768858f095d90d5dc88
SHA1

07c81bd427eecbd130e52351d99432b16bdc8d2e
SHA256

3536f79b815a6d77e371df48abaec315c92ccec6e197e547440fa66629edd640
SHA512

4356e6c1ad77ecb750ce4d720521da2113f69f6dfed113c306a0ef6681512cb356c39ecd1d0917d55990efbb7e8abfb796d48c0a77bb0742c75c480777a2b491

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-FFP6U6
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:

BL-INVOICE SHIPPING DOCS.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	BL-INVOICE SHIPPING DOCS.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	BL-INVOICE SHIPPING DOCS.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:

BL-INVOICE SHIPPING DOCS.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	BL-INVOICE SHIPPING DOCS.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	BL-INVOICE SHIPPING DOCS.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

BL-INVOICE SHIPPING DOCS.exe

description pid process target process

PID 2792 set thread context of 600 2792 BL-INVOICE SHIPPING DOCS.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

3456 powershell.exe
3456 powershell.exe
3456 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 3456 powershell.exe

description	pid	process	target process
PID 2792 set thread context of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe

pid	process
3456	powershell.exe
3456	powershell.exe
3456	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3456	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

BL-INVOICE SHIPPING DOCS.exe

description	pid	process	target process
PID 2792 wrote to memory of 3456	2792	BL-INVOICE SHIPPING DOCS.exe	powershell.exe
PID 2792 wrote to memory of 3456	2792	BL-INVOICE SHIPPING DOCS.exe	powershell.exe
PID 2792 wrote to memory of 3456	2792	BL-INVOICE SHIPPING DOCS.exe	powershell.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe
PID 2792 wrote to memory of 600	2792	BL-INVOICE SHIPPING DOCS.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\BL-INVOICE SHIPPING DOCS.exe
"C:\Users\Admin\AppData\Local\Temp\BL-INVOICE SHIPPING DOCS.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2792

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\BL-INVOICE SHIPPING DOCS.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3456

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
PID:600

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/600-130-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/600-140-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/600-131-0x000000000042FC39-mapping.dmp

Download
memory/2792-117-0x00000000055A0000-0x00000000055A1000-memory.dmp

Filesize
4KB

Download
memory/2792-118-0x00000000050A0000-0x00000000050A1000-memory.dmp

Filesize
4KB

Download
memory/2792-119-0x0000000004FE0000-0x0000000004FE1000-memory.dmp

Filesize
4KB

Download
memory/2792-120-0x0000000005080000-0x0000000005087000-memory.dmp

Filesize
28KB

Download
memory/2792-121-0x0000000004FB0000-0x0000000005042000-memory.dmp

Filesize
584KB

Download
memory/2792-122-0x0000000005D80000-0x0000000005D81000-memory.dmp

Filesize
4KB

Download
memory/2792-123-0x0000000005EC0000-0x0000000005F55000-memory.dmp

Filesize
596KB

Download
memory/2792-115-0x0000000000700000-0x0000000000701000-memory.dmp

Filesize
4KB

Download
memory/2792-125-0x00000000068B0000-0x00000000068B1000-memory.dmp

Filesize
4KB

Download
memory/3456-124-0x0000000000000000-mapping.dmp

Download
memory/3456-139-0x0000000008310000-0x0000000008311000-memory.dmp

Filesize
4KB

Download
memory/3456-128-0x00000000045E0000-0x00000000045E1000-memory.dmp

Filesize
4KB

Download
memory/3456-132-0x0000000007040000-0x0000000007041000-memory.dmp

Filesize
4KB

Download
memory/3456-126-0x0000000004440000-0x0000000004441000-memory.dmp

Filesize
4KB

Download
memory/3456-133-0x0000000007830000-0x0000000007831000-memory.dmp

Filesize
4KB

Download
memory/3456-135-0x00000000079A0000-0x00000000079A1000-memory.dmp

Filesize
4KB

Download
memory/3456-136-0x0000000007CF0000-0x0000000007CF1000-memory.dmp

Filesize
4KB

Download
memory/3456-137-0x0000000006AE0000-0x0000000006AE1000-memory.dmp

Filesize
4KB

Download
memory/3456-129-0x0000000007120000-0x0000000007121000-memory.dmp

Filesize
4KB

Download
memory/3456-127-0x0000000004440000-0x0000000004441000-memory.dmp

Filesize
4KB

Download
memory/3456-138-0x0000000006AE2000-0x0000000006AE3000-memory.dmp

Filesize
4KB

Download
memory/3456-141-0x0000000008100000-0x0000000008101000-memory.dmp

Filesize
4KB

Download
memory/3456-142-0x0000000004440000-0x0000000004441000-memory.dmp

Filesize
4KB

Download
memory/3456-149-0x00000000090D0000-0x0000000009103000-memory.dmp

Filesize
204KB

Download
memory/3456-156-0x0000000009090000-0x0000000009091000-memory.dmp

Filesize
4KB

Download
memory/3456-161-0x0000000009200000-0x0000000009201000-memory.dmp

Filesize
4KB

Download
memory/3456-162-0x00000000093D0000-0x00000000093D1000-memory.dmp

Filesize
4KB

Download
memory/3456-163-0x000000007EE30000-0x000000007EE31000-memory.dmp

Filesize
4KB

Download
memory/3456-164-0x0000000006AE3000-0x0000000006AE4000-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