remcos | c962412a689204cd4b65e64c886e8d2a59ca7b5809e695326536b114932ede93

General

Target

d4bc82b37c773a6da7a252a666296531_JaffaCakes118.exe
Size

131KB
MD5

d4bc82b37c773a6da7a252a666296531
SHA1

d68248bef63169855ffe579b270adcd08e69703a
SHA256

c962412a689204cd4b65e64c886e8d2a59ca7b5809e695326536b114932ede93
SHA512

e8ac81a1dfa8b9851a2ab85b518f40ddeb55874da8b8064e25b82cd643fab9b4442c1da98f2faa34de1d9ef0dd3eafe0f4f5817cfb2c7c7c5ef5ad5504256896
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKk:xPd4n/M+WLcilrpgGH/GwY87mVmIX0

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	d4bc82b37c773a6da7a252a666296531_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4944	wn2ra4ohzdr.exe
3908	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"	d4bc82b37c773a6da7a252a666296531_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4944 set thread context of 3908	4944	wn2ra4ohzdr.exe	91

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	d4bc82b37c773a6da7a252a666296531_JaffaCakes118.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
3908	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5076 wrote to memory of 4944	5076	d4bc82b37c773a6da7a252a666296531_JaffaCakes118.exe	87
PID 5076 wrote to memory of 4944	5076	d4bc82b37c773a6da7a252a666296531_JaffaCakes118.exe	87
PID 5076 wrote to memory of 4944	5076	d4bc82b37c773a6da7a252a666296531_JaffaCakes118.exe	87
PID 4944 wrote to memory of 3908	4944	wn2ra4ohzdr.exe	91
PID 4944 wrote to memory of 3908	4944	wn2ra4ohzdr.exe	91
PID 4944 wrote to memory of 3908	4944	wn2ra4ohzdr.exe	91
PID 4944 wrote to memory of 3908	4944	wn2ra4ohzdr.exe	91
PID 4944 wrote to memory of 3908	4944	wn2ra4ohzdr.exe	91
PID 4944 wrote to memory of 3908	4944	wn2ra4ohzdr.exe	91
PID 4944 wrote to memory of 3908	4944	wn2ra4ohzdr.exe	91
PID 4944 wrote to memory of 3908	4944	wn2ra4ohzdr.exe	91
PID 4944 wrote to memory of 3908	4944	wn2ra4ohzdr.exe	91

C:\Users\Admin\AppData\Local\Temp\d4bc82b37c773a6da7a252a666296531_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d4bc82b37c773a6da7a252a666296531_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5076
- 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:4944
- - 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:3908

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
131KB

MD5
9d693962d8a1bfd3800a8ad3b7f54451

SHA1
4bbb6cee48fd7d7cb447a00486580c977c3b5252

SHA256
1700c5ba3b03a706fca79ca00ab761a3a3d50c45f1a28be6541fdeced4fad924

SHA512
cc19cef337c9b6047b5043b89008a3f1568ab645bca05c9fa806d56b8bbe2a805e6b47c53c3d582fb763131eb3c37d8de1d538aa289650ac57030b430580925e

Download Submit
memory/3908-31-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3908-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3908-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3908-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3908-27-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3908-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4944-21-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/4944-23-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/4944-34-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/4944-36-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/5076-20-0x0000000074AEE000-0x0000000074AEF000-memory.dmp

Filesize
4KB

Download
memory/5076-22-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/5076-0-0x0000000074AEE000-0x0000000074AEF000-memory.dmp

Filesize
4KB

Download
memory/5076-6-0x0000000004C80000-0x0000000004CA0000-memory.dmp

Filesize
128KB

Download
memory/5076-5-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/5076-4-0x0000000004AA0000-0x0000000004AAA000-memory.dmp

Filesize
40KB

Download
memory/5076-3-0x00000000049E0000-0x0000000004A72000-memory.dmp

Filesize
584KB

Download
memory/5076-2-0x00000000050D0000-0x0000000005674000-memory.dmp

Filesize
5.6MB

Download
memory/5076-1-0x0000000000020000-0x0000000000048000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads