remcos | a217f639b91625bff1a888e42aafaf1d69a3b04bd4b4f83b29fa12b04903fd42

General

Target

PJ-24-PCBN0190.exe
Size

506KB
MD5

391eb6e1d6d588a51adc83ccf70fbaca
SHA1

e4154f4786be22e960fe94abd39caadbbcd29745
SHA256

7c5e6bd087ef9714cfaf90856d1db5a5cf8bab4d7f1688a214a4b3b90014476b
SHA512

bc5cf53b786e5752be814271c09d25cd16aa3a44ee0bec177465f8d5fdbaac8be82642fdfbbc6f0398aa815597ed27ba53a78a44cc2de25fc87aec905a248620
SSDEEP

12288:9o+VIWBonT8umPHsk2kpMkOFd9/vnUL5IyaXXPF:O+VIWCnT8dPskdq9/vUlGPF

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

38.132.122.173:2404

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-78GP4R
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

Loads dropped DLL 1 IoCs

pid	Process
2716	PJ-24-PCBN0190.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2292	PJ-24-PCBN0190.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2716	PJ-24-PCBN0190.exe
2292	PJ-24-PCBN0190.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 2292	2716	PJ-24-PCBN0190.exe	29

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 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	PJ-24-PCBN0190.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PJ-24-PCBN0190.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2716	PJ-24-PCBN0190.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2292	PJ-24-PCBN0190.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2292	2716	PJ-24-PCBN0190.exe	29
PID 2716 wrote to memory of 2292	2716	PJ-24-PCBN0190.exe	29
PID 2716 wrote to memory of 2292	2716	PJ-24-PCBN0190.exe	29
PID 2716 wrote to memory of 2292	2716	PJ-24-PCBN0190.exe	29
PID 2716 wrote to memory of 2292	2716	PJ-24-PCBN0190.exe	29
PID 2716 wrote to memory of 2292	2716	PJ-24-PCBN0190.exe	29

C:\Users\Admin\AppData\Local\Temp\PJ-24-PCBN0190.exe
"C:\Users\Admin\AppData\Local\Temp\PJ-24-PCBN0190.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Users\Admin\AppData\Local\Temp\PJ-24-PCBN0190.exe
  "C:\Users\Admin\AppData\Local\Temp\PJ-24-PCBN0190.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
a520bfbbb4cdfbbcb7fe597ebd4f9e25

SHA1
103f20baf305159a3e43caccc96b9a0b886cadd8

SHA256
6fd8b877e8ad524bce81f4487d60bca5f66ac31d64fa08458bb24cd6f0895b91

SHA512
b1c59daee36f639d8b6d31e1659d0f12bb187c67119eab86a84d5c2ce8520ac04d4af72a54098a4076a145962ca0a643d90e3ebb95f05ed8161b4a74d0b1bfe4

Download Submit
\Users\Admin\AppData\Local\Temp\nsoF73B.tmp\System.dll

Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
memory/2292-37-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-21-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-43-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-18-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-46-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-25-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-80-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-48-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-31-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-34-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-77-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-40-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-15-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-14-0x0000000077660000-0x0000000077809000-memory.dmp

Filesize
1.7MB

Download
memory/2292-28-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-52-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-56-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-59-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-62-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-65-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-67-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-70-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2292-74-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2716-12-0x0000000077661000-0x0000000077762000-memory.dmp

Filesize
1.0MB

Download
memory/2716-13-0x0000000077660000-0x0000000077809000-memory.dmp

Filesize
1.7MB

Download

Analysis

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