remcos | d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308

General

Target

d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
Size

1.1MB
MD5

7b8bf7f2c6e9b98839bbdafe0690a353
SHA1

e9f8dc02084674dd9f4d5ebb22f5f3ee5c040d04
SHA256

d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308
SHA512

b5cad596eae2e12058f805e021adf15eab04377f811fa06ce7b0ee87a5594f22fcf97b3be1003615ef98770bdc4e471e54b33b7c8e5bcd99d206cac02d0e56b1
SSDEEP

24576:eaTgKwZ14X27uUL3VM0kd+rkhfMsjgkAj2JE06J5N0F6:LTgdZOcuUL3xAx/8b2S7Z0A

Score

10^/10

remcos chinemerem discovery rat

Malware Config

Extracted

Family

remcos

Version

2.2.2 Pro

Botnet

chinemerem

C2

remcoss.onmypc.org:3765

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
r-8ET8H0
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
Remcos family
remcos

Executes dropped EXE 1 IoCs

pid	Process
2716	AboutSettingsHandlers.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2120-21-0x0000000000200000-0x0000000000389000-memory.dmp	autoit_exe
behavioral1/memory/2120-26-0x0000000000200000-0x0000000000389000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2120 set thread context of 1700	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2768	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1700	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 1700	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 2120 wrote to memory of 1700	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 2120 wrote to memory of 1700	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 2120 wrote to memory of 1700	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 2120 wrote to memory of 1700	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 2120 wrote to memory of 1700	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	30
PID 2120 wrote to memory of 2768	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	32
PID 2120 wrote to memory of 2768	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	32
PID 2120 wrote to memory of 2768	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	32
PID 2120 wrote to memory of 2768	2120	d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe	32
PID 2732 wrote to memory of 2716	2732	taskeng.exe	35
PID 2732 wrote to memory of 2716	2732	taskeng.exe	35
PID 2732 wrote to memory of 2716	2732	taskeng.exe	35
PID 2732 wrote to memory of 2716	2732	taskeng.exe	35

C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
"C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe
  "C:\Users\Admin\AppData\Local\Temp\d25efc17afb97e52ac1270b93b161fb427dde56e3e4eafbda37ce5c2356e9308.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1700
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemSettingsAdminFlows /tr "C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2768

C:\Windows\system32\taskeng.exe
taskeng.exe {0E8245C6-98A6-478F-A408-C31BC675EE8F} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe
  2⤵
  - Executes dropped EXE
  PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\UIMgrBroker\AboutSettingsHandlers.exe

Filesize
1.1MB

MD5
fd9141cb5fe5e8df15a842e2e6789973

SHA1
8a365fc7b9b0deef26f3f33d8861a3c372d60c5f

SHA256
c57d17e509fa3987203d028e9ac0ba13956fdb47796f57bf771b9ecdce4195ef

SHA512
4d295892d6908d27aa5d06832df0a935eabea5b4a63ae54e0818aa59fee565509a1e0c83b17cc4dafda2860354be2899649f0cf610b6c65dc8a4ab10412e4169

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
79B

MD5
6c13854a584495f16924c790b144ff37

SHA1
6a269a2817854505a374717e29468cf16d08a411

SHA256
8fb44133707e03c736e74fe54131be93017dc3158f1b3c9515e8244010080108

SHA512
ab2ca0891f84de76d8b202cebfedeb4d76aeb087212ab2a722bd8bee029f22263d76951baeed624cf3cfdba372754fa7224bb3378b416085279b1112a4cb214d

Download Submit
memory/1700-15-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/1700-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1700-5-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/1700-3-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/1700-20-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/1700-19-0x0000000000200000-0x0000000000389000-memory.dmp

Filesize
1.5MB

Download
memory/1700-14-0x0000000000070000-0x0000000000090000-memory.dmp

Filesize
128KB

Download
memory/2120-18-0x0000000002750000-0x00000000028D9000-memory.dmp

Filesize
1.5MB

Download
memory/2120-0-0x0000000000200000-0x0000000000389000-memory.dmp

Filesize
1.5MB

Download
memory/2120-21-0x0000000000200000-0x0000000000389000-memory.dmp

Filesize
1.5MB

Download
memory/2120-26-0x0000000000200000-0x0000000000389000-memory.dmp

Filesize
1.5MB

Download
memory/2120-2-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/2120-1-0x00000000000E0000-0x00000000000E3000-memory.dmp

Filesize
12KB

Download
memory/2716-33-0x00000000003B0000-0x0000000000539000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads