remcos | c18c4e383f8776032ddb4b7e1782c5068469649b60dbb8f1fe1df2e32399161f

General

Target

UPSCBIJ99581770131.exe
Size

1.1MB
MD5

4e991fbca595be038bf07c2bec420e54
SHA1

7da7bef438d2a35ea39a59623b78d1c8871f2462
SHA256

43994b889ce86f1e9c546467c18d9dfa3cc1cec6f5b2dc88799ecb731e1bc43c
SHA512

b2ebcb9f58a019c3265d5e001897cb778444a5f8caa509fb3b14ee368cf553aeab27769453ca9164a86f12e2a531b68b96daf0d5df8dbcc9ee6d3027bd6d2c90
SSDEEP

24576:K1Cp6h1NhMue8erGEEdQqzGdGD3aCg9zTZCX7r3gps:BCRMP8erseqadd9xC3W

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

yayabeloo.duckdns.org:6847

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-VPA6N9
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1388 set thread context of 2356	1388	UPSCBIJ99581770131.exe	31

System Location Discovery: System Language Discovery 1 TTPs 2 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	UPSCBIJ99581770131.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	UPSCBIJ99581770131.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2356	UPSCBIJ99581770131.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31
PID 1388 wrote to memory of 2356	1388	UPSCBIJ99581770131.exe	31

C:\Users\Admin\AppData\Local\Temp\UPSCBIJ99581770131.exe
"C:\Users\Admin\AppData\Local\Temp\UPSCBIJ99581770131.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Users\Admin\AppData\Local\Temp\UPSCBIJ99581770131.exe
  "C:\Users\Admin\AppData\Local\Temp\UPSCBIJ99581770131.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
c3b221268323e9c358a046592f2f9c57

SHA1
fd8abf54e2b719937015f2aa2c2135ce1b7188e2

SHA256
d4203ad4db1508c527135e03e3b192d3a098501c3288b049442c6869a731f212

SHA512
0c1d1376ca8c65d70c83185966e4f8267d54fe3cd2a0ed023d2876bf8b7f82d851d3162fddab8d156061f52900c82d9d17f48e395aab71f317431fac950196ee

Download Submit
memory/1388-28-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/1388-1-0x00000000008B0000-0x00000000009DC000-memory.dmp

Filesize
1.2MB

Download
memory/1388-2-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/1388-3-0x0000000001EB0000-0x0000000001ECC000-memory.dmp

Filesize
112KB

Download
memory/1388-4-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/1388-5-0x0000000005D40000-0x0000000005E02000-memory.dmp

Filesize
776KB

Download
memory/1388-0-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/2356-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2356-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2356-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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