remcos | e76a41afa56e1f181a5f870938a96080a15600c63735335b58df3cd021c163d4

General

Target

a3720759f7a642fd6a6693df27c30296_JaffaCakes118.exe
Size

131KB
MD5

a3720759f7a642fd6a6693df27c30296
SHA1

02f94dc2f13852e980f9623814e187722bc908ef
SHA256

e76a41afa56e1f181a5f870938a96080a15600c63735335b58df3cd021c163d4
SHA512

766f2def12916fc1a8231f9f67e6efbf035c5dd7342c2f87d691a9f2ff9bacb1013ebd798d2f3054ba014070aec9897b931faed4103207297dbafee0aa28d0ca
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKp: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

Executes dropped EXE 2 IoCs

pid	Process
2228	wn2ra4ohzdr.exe
2628	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
2168	a3720759f7a642fd6a6693df27c30296_JaffaCakes118.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	a3720759f7a642fd6a6693df27c30296_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2228 set thread context of 2628	2228	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	wn2ra4ohzdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a3720759f7a642fd6a6693df27c30296_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2628	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2228	2168	a3720759f7a642fd6a6693df27c30296_JaffaCakes118.exe	30
PID 2168 wrote to memory of 2228	2168	a3720759f7a642fd6a6693df27c30296_JaffaCakes118.exe	30
PID 2168 wrote to memory of 2228	2168	a3720759f7a642fd6a6693df27c30296_JaffaCakes118.exe	30
PID 2168 wrote to memory of 2228	2168	a3720759f7a642fd6a6693df27c30296_JaffaCakes118.exe	30
PID 2228 wrote to memory of 2628	2228	wn2ra4ohzdr.exe	31
PID 2228 wrote to memory of 2628	2228	wn2ra4ohzdr.exe	31
PID 2228 wrote to memory of 2628	2228	wn2ra4ohzdr.exe	31
PID 2228 wrote to memory of 2628	2228	wn2ra4ohzdr.exe	31
PID 2228 wrote to memory of 2628	2228	wn2ra4ohzdr.exe	31
PID 2228 wrote to memory of 2628	2228	wn2ra4ohzdr.exe	31
PID 2228 wrote to memory of 2628	2228	wn2ra4ohzdr.exe	31
PID 2228 wrote to memory of 2628	2228	wn2ra4ohzdr.exe	31
PID 2228 wrote to memory of 2628	2228	wn2ra4ohzdr.exe	31
PID 2228 wrote to memory of 2628	2228	wn2ra4ohzdr.exe	31

C:\Users\Admin\AppData\Local\Temp\a3720759f7a642fd6a6693df27c30296_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a3720759f7a642fd6a6693df27c30296_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2168
- 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:2228
- - 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:2628

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

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Downloads

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

Filesize
131KB

MD5
aff7b5a569b58cea56181e8453e3e06f

SHA1
5edcaa2e4943f1e201228f893640e83ca2e31dc7

SHA256
222aeb8b89c4947c21cbc8fd7f70d4454560cb20d46e5cd1eb6e8898dc3bbdfb

SHA512
fd76b4a7f279f5c7e01fc9caad714f8edd061f46fa02519aac50293c2fcbc35fed3a8f83168701b931e8db507177390e62fc3e2215259fcaabfdb837e4ba1969

Download Submit
memory/2168-1-0x0000000000FF0000-0x0000000001018000-memory.dmp

Filesize
160KB

Download
memory/2168-2-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2168-3-0x00000000004D0000-0x00000000004F0000-memory.dmp

Filesize
128KB

Download
memory/2168-12-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2168-0-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/2228-36-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2228-13-0x0000000000DA0000-0x0000000000DC8000-memory.dmp

Filesize
160KB

Download
memory/2228-14-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2228-15-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2228-37-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2628-16-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-20-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-31-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-32-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2628-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads