remcos | 1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791

General

Target

1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791.exe
Size

139KB
MD5

c18ed22232aa0d8b06ddd20fabcea7af
SHA1

a4be87e0c083353de36a6c1bd531dbb8a2087f66
SHA256

1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791
SHA512

1582a6a57cc8ed4248e4936e0abc9c5bef0a0275c865b20a0f30e84d97faa1088e4ce365bb4361db75fdda6b0d292be1f35c7daa2e8abba5dddd7599aed69f86
SSDEEP

3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXhIHVSV:xP6/M+WLckOBhVmIYY

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

systemcontrol.ddns.net:45000

systemcontrol2.ddns.net:45000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
OfficeUpgrade.exe
copy_folder
OfficeUpgrade
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
Upgrader.dat
keylog_flag
false
keylog_folder
Upgrader
keylog_path
%AppData%
mouse_option
false
mutex
req_khauflaoyr
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
OfficeUpgrade
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
2224	wn2ra4ohzdr.exe
2792	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
1620	1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2224 set thread context of 2792	2224	wn2ra4ohzdr.exe	31

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	1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2792	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 2224	1620	1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791.exe	30
PID 1620 wrote to memory of 2224	1620	1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791.exe	30
PID 1620 wrote to memory of 2224	1620	1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791.exe	30
PID 1620 wrote to memory of 2224	1620	1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791.exe	30
PID 2224 wrote to memory of 2792	2224	wn2ra4ohzdr.exe	31
PID 2224 wrote to memory of 2792	2224	wn2ra4ohzdr.exe	31
PID 2224 wrote to memory of 2792	2224	wn2ra4ohzdr.exe	31
PID 2224 wrote to memory of 2792	2224	wn2ra4ohzdr.exe	31
PID 2224 wrote to memory of 2792	2224	wn2ra4ohzdr.exe	31
PID 2224 wrote to memory of 2792	2224	wn2ra4ohzdr.exe	31
PID 2224 wrote to memory of 2792	2224	wn2ra4ohzdr.exe	31
PID 2224 wrote to memory of 2792	2224	wn2ra4ohzdr.exe	31
PID 2224 wrote to memory of 2792	2224	wn2ra4ohzdr.exe	31
PID 2224 wrote to memory of 2792	2224	wn2ra4ohzdr.exe	31

C:\Users\Admin\AppData\Local\Temp\1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791.exe
"C:\Users\Admin\AppData\Local\Temp\1e3540baabf42245189b60b29a9bc799c35f6c4f6205f06c5efe449166cc0791.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
  "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2224
- - C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
    "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe

Filesize
139KB

MD5
d1e2251238fe314ba136d50db56effe3

SHA1
042fcb28df59ae3602db2875b03f1c0f5b6e01a4

SHA256
5432b0cf8f3129519338ea8560bfabe026e93f903c0363fd724ef0b708476ece

SHA512
a1ce2d33c47dcaa7e233e718e62d4ec288e3bec92f4b1210a280e0b300240c3f9fb308a0fe1efb7d8a6f2c5fc0ee66771ff4ebd72fcd6a6bac64459249684002

Download Submit
memory/1620-1-0x0000000001320000-0x0000000001348000-memory.dmp

Filesize
160KB

Download
memory/1620-2-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/1620-3-0x00000000006A0000-0x00000000006C0000-memory.dmp

Filesize
128KB

Download
memory/1620-12-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/1620-0-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/2224-33-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2224-14-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2224-15-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2224-13-0x0000000000870000-0x0000000000898000-memory.dmp

Filesize
160KB

Download
memory/2224-34-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/2792-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2792-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2792-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2792-17-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2792-20-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2792-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2792-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2792-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2792-16-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads