remcos | 202f33d58a0f7ad48695fdf718cfd5cb8a93cf9d1c410e7a6cac51ad0407a6b0

General

Target

a55643dbed66c798227d37d5d67df6e4.exe
Size

2.3MB
MD5

a55643dbed66c798227d37d5d67df6e4
SHA1

0b12dbf8812476b60b5ccfa0c205de57271ed015
SHA256

202f33d58a0f7ad48695fdf718cfd5cb8a93cf9d1c410e7a6cac51ad0407a6b0
SHA512

48af1619628ce69855010b4bb443c0ef83b122defb9a8ce283983f5bec54590202dab34c656421e08ead89dd855faadae2967e264af50d0ce7537946354a3d61
SSDEEP

49152:5P0xhbiuRVWys96ZVEEA3TesKuRfxcIWKy1KBC7sUH1RCYxT1onu+Xj3n:yzPPWV96ZfIRJcIpyl71VMs1su+Xzn

Score

10^/10

remcos mondayhost bless rat

Malware Config

Extracted

Family

remcos

Botnet

MONDAYHost BLESS

C2

aryexpcrt.ddns.net:3216

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-6PETGK
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

Signatures

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

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:

a55643dbed66c798227d37d5d67df6e4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	a55643dbed66c798227d37d5d67df6e4.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a55643dbed66c798227d37d5d67df6e4.exe

description pid process target process

PID 4724 set thread context of 5092 4724 a55643dbed66c798227d37d5d67df6e4.exe a55643dbed66c798227d37d5d67df6e4.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 2 IoCs

Processes:

powershell.exe

pid process

3744 powershell.exe
3744 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

a55643dbed66c798227d37d5d67df6e4.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4724 a55643dbed66c798227d37d5d67df6e4.exe
Token: SeDebugPrivilege 3744 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

a55643dbed66c798227d37d5d67df6e4.exe

pid process

5092 a55643dbed66c798227d37d5d67df6e4.exe

description	pid	process	target process
PID 4724 set thread context of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe

pid	process
3744	powershell.exe
3744	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4724	a55643dbed66c798227d37d5d67df6e4.exe
Token: SeDebugPrivilege	3744	powershell.exe

pid	process
5092	a55643dbed66c798227d37d5d67df6e4.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

a55643dbed66c798227d37d5d67df6e4.exe

C:\Users\Admin\AppData\Local\Temp\a55643dbed66c798227d37d5d67df6e4.exe
"C:\Users\Admin\AppData\Local\Temp\a55643dbed66c798227d37d5d67df6e4.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4724

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwA1AA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3744

C:\Users\Admin\AppData\Local\Temp\a55643dbed66c798227d37d5d67df6e4.exe
C:\Users\Admin\AppData\Local\Temp\a55643dbed66c798227d37d5d67df6e4.exe
2⤵
- Suspicious use of SetWindowsHookEx
PID:5092

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3744-140-0x00000000051D0000-0x0000000005236000-memory.dmp

Filesize
408KB

Download
memory/3744-143-0x00000000063D0000-0x00000000063EA000-memory.dmp

Filesize
104KB

Download
memory/3744-141-0x0000000005EE0000-0x0000000005EFE000-memory.dmp

Filesize
120KB

Download
memory/3744-142-0x00000000075C0000-0x0000000007C3A000-memory.dmp

Filesize
6.5MB

Download
memory/3744-136-0x0000000000000000-mapping.dmp

Download
memory/3744-137-0x0000000002990000-0x00000000029C6000-memory.dmp

Filesize
216KB

Download
memory/3744-138-0x0000000005240000-0x0000000005868000-memory.dmp

Filesize
6.2MB

Download
memory/3744-139-0x0000000005160000-0x00000000051C6000-memory.dmp

Filesize
408KB

Download
memory/4724-134-0x0000000005090000-0x0000000005122000-memory.dmp

Filesize
584KB

Download
memory/4724-133-0x0000000005530000-0x0000000005AD4000-memory.dmp

Filesize
5.6MB

Download
memory/4724-135-0x0000000005030000-0x0000000005052000-memory.dmp

Filesize
136KB

Download
memory/4724-132-0x0000000000080000-0x00000000002D8000-memory.dmp

Filesize
2.3MB

Download
memory/5092-149-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/5092-144-0x0000000000000000-mapping.dmp

Download
memory/5092-145-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/5092-146-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/5092-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/5092-148-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

description	pid	process	target process
PID 4724 wrote to memory of 3744	4724	a55643dbed66c798227d37d5d67df6e4.exe	powershell.exe
PID 4724 wrote to memory of 3744	4724	a55643dbed66c798227d37d5d67df6e4.exe	powershell.exe
PID 4724 wrote to memory of 3744	4724	a55643dbed66c798227d37d5d67df6e4.exe	powershell.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe
PID 4724 wrote to memory of 5092	4724	a55643dbed66c798227d37d5d67df6e4.exe	a55643dbed66c798227d37d5d67df6e4.exe

Analysis

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