remcos | 8576cd1fa9a4fb395d946793d90eb941f86faddf5332db0cb932d2ffacb36562

General

Target

9668a095c38407db1c77847027ae577e_JaffaCakes118.exe
Size

131KB
MD5

9668a095c38407db1c77847027ae577e
SHA1

6aae64387909a4d50bf06a92ef50b2b40c79ccae
SHA256

8576cd1fa9a4fb395d946793d90eb941f86faddf5332db0cb932d2ffacb36562
SHA512

4d6a5bf9d17f9fb07f6a17c8a1e4b69a8bbf2b030bd4990ebb0efdf7788a7885f8662910555aee19c13275b17c457eaff25debdfaf83c858cfdaaf82f606fd92
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKD:xPd4n/M+WLcilrpgGH/GwY87mVmIXz

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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	9668a095c38407db1c77847027ae577e_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4020	wn2ra4ohzdr.exe
4956	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	9668a095c38407db1c77847027ae577e_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4020 set thread context of 4956	4020	wn2ra4ohzdr.exe	97

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	9668a095c38407db1c77847027ae577e_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
4956	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 4020	2696	9668a095c38407db1c77847027ae577e_JaffaCakes118.exe	92
PID 2696 wrote to memory of 4020	2696	9668a095c38407db1c77847027ae577e_JaffaCakes118.exe	92
PID 2696 wrote to memory of 4020	2696	9668a095c38407db1c77847027ae577e_JaffaCakes118.exe	92
PID 4020 wrote to memory of 4956	4020	wn2ra4ohzdr.exe	97
PID 4020 wrote to memory of 4956	4020	wn2ra4ohzdr.exe	97
PID 4020 wrote to memory of 4956	4020	wn2ra4ohzdr.exe	97
PID 4020 wrote to memory of 4956	4020	wn2ra4ohzdr.exe	97
PID 4020 wrote to memory of 4956	4020	wn2ra4ohzdr.exe	97
PID 4020 wrote to memory of 4956	4020	wn2ra4ohzdr.exe	97
PID 4020 wrote to memory of 4956	4020	wn2ra4ohzdr.exe	97
PID 4020 wrote to memory of 4956	4020	wn2ra4ohzdr.exe	97
PID 4020 wrote to memory of 4956	4020	wn2ra4ohzdr.exe	97

C:\Users\Admin\AppData\Local\Temp\9668a095c38407db1c77847027ae577e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9668a095c38407db1c77847027ae577e_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696
- 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:4020
- - 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:4956

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
d019e1492e7fb87cdbe5f0a58be5a546

SHA1
da467b479d46a0c9956a58c1e67ad5e2a6fb29ad

SHA256
087153d17658bb48c3a856a646c8b77deb2ef449d2cab6020d9b3bf7ff62a03c

SHA512
0d5db2cb9e6fa6c2f32cff2a1d2d76b339208d6f16e240c88711943cfde61deb47ba5866f737e6109ef28e983dcec4b7903d0f26af4f52fdaa1b87bf3986b62e

Download Submit
memory/2696-20-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/2696-3-0x0000000004C90000-0x0000000004D22000-memory.dmp

Filesize
584KB

Download
memory/2696-4-0x0000000004BF0000-0x0000000004BFA000-memory.dmp

Filesize
40KB

Download
memory/2696-2-0x0000000005330000-0x00000000058D4000-memory.dmp

Filesize
5.6MB

Download
memory/2696-5-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/2696-6-0x0000000004E70000-0x0000000004E90000-memory.dmp

Filesize
128KB

Download
memory/2696-1-0x0000000000200000-0x0000000000228000-memory.dmp

Filesize
160KB

Download
memory/2696-0-0x00000000750CE000-0x00000000750CF000-memory.dmp

Filesize
4KB

Download
memory/4020-35-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/4020-22-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/4020-33-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/4020-21-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/4956-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4956-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4956-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4956-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4956-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4956-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads