remcos | 0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2

General

Target

0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe
Size

133KB
MD5

69df44cc9bf3615b052a09ad8c2d480f
SHA1

d4142650c5e3f97926e46ece00bf7cf3d1ec365e
SHA256

0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2
SHA512

feff75495ce185fe46947f5301f2b9ea5b57e9a09d217949ce12d99a1749e6f07561a3de49629708f5342ee3e8143b26aedcca160e09cbbd907fe32c97f2a6fe
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKP:xPd4n/M+WLcilrpgGH/GwY87mVmIXay

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
Remcos family
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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe

Executes dropped EXE 2 IoCs

pid	Process
836	wn2ra4ohzdr.exe
1072	wn2ra4ohzdr.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 836 set thread context of 1072	836	wn2ra4ohzdr.exe	83

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	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.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
1072	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4516 wrote to memory of 836	4516	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe	82
PID 4516 wrote to memory of 836	4516	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe	82
PID 4516 wrote to memory of 836	4516	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe	82
PID 836 wrote to memory of 1072	836	wn2ra4ohzdr.exe	83
PID 836 wrote to memory of 1072	836	wn2ra4ohzdr.exe	83
PID 836 wrote to memory of 1072	836	wn2ra4ohzdr.exe	83
PID 836 wrote to memory of 1072	836	wn2ra4ohzdr.exe	83
PID 836 wrote to memory of 1072	836	wn2ra4ohzdr.exe	83
PID 836 wrote to memory of 1072	836	wn2ra4ohzdr.exe	83
PID 836 wrote to memory of 1072	836	wn2ra4ohzdr.exe	83
PID 836 wrote to memory of 1072	836	wn2ra4ohzdr.exe	83
PID 836 wrote to memory of 1072	836	wn2ra4ohzdr.exe	83

C:\Users\Admin\AppData\Local\Temp\0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe
"C:\Users\Admin\AppData\Local\Temp\0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4516
- 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:836
- - 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:1072

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

Query Registry

1

T1012

System Information Discovery

2

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\raj4dkhhiap\wn2ra4ohzdr.exe

Filesize
133KB

MD5
bb3405db074cd4b3d5c71e47611406c9

SHA1
91021195d53d2fcc3314efa7068806aeaef4082b

SHA256
f540245fd2b4ca7e485d7dc484dae42c3a1d989185eee9550398d73c04ddcf73

SHA512
a365616bd8799aaf1f6ab8129c69b88b31d18c016d30e71b476fe511cafa37025db9eb98abdf30c37baf4ace064a6c6b86458e5db139e18f6311d31540743f1f

Download Submit
memory/836-35-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/836-33-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/836-22-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/836-21-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/1072-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1072-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1072-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1072-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1072-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1072-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4516-20-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/4516-0-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/4516-3-0x00000000054B0000-0x0000000005542000-memory.dmp

Filesize
584KB

Download
memory/4516-6-0x0000000005850000-0x0000000005870000-memory.dmp

Filesize
128KB

Download
memory/4516-4-0x0000000005580000-0x000000000558A000-memory.dmp

Filesize
40KB

Download
memory/4516-5-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/4516-2-0x0000000005B70000-0x0000000006114000-memory.dmp

Filesize
5.6MB

Download
memory/4516-1-0x0000000000AB0000-0x0000000000AD8000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads