remcos | 93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42

General

Target

93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42.exe
Size

134KB
MD5

604489f03ada0efe0e572dc243ec601f
SHA1

675dd6d71af11dfec2d1922e9a2e51677570ea67
SHA256

93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42
SHA512

d99e8406b27f2e3668f224db1b0d2a49db68bec3be67787f02b835cbfbf9b768ec89a3eebaecda1a80a2c4fd89806124403b0370479fae7c106c7e64bad96180
SSDEEP

3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXarMc:xP6/M+WLckOBhVmIqrMc

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-1-5-21-3218366390-1258052702-4267193707-1000\Control Panel\International\Geo\Nation	93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42.exe

Executes dropped EXE 2 IoCs

pid	Process
1352	wn2ra4ohzdr.exe
2944	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-1-5-21-3218366390-1258052702-4267193707-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1352 set thread context of 2944	1352	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	93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42.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
2944	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 692 wrote to memory of 1352	692	93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42.exe	94
PID 692 wrote to memory of 1352	692	93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42.exe	94
PID 692 wrote to memory of 1352	692	93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42.exe	94
PID 1352 wrote to memory of 2944	1352	wn2ra4ohzdr.exe	97
PID 1352 wrote to memory of 2944	1352	wn2ra4ohzdr.exe	97
PID 1352 wrote to memory of 2944	1352	wn2ra4ohzdr.exe	97
PID 1352 wrote to memory of 2944	1352	wn2ra4ohzdr.exe	97
PID 1352 wrote to memory of 2944	1352	wn2ra4ohzdr.exe	97
PID 1352 wrote to memory of 2944	1352	wn2ra4ohzdr.exe	97
PID 1352 wrote to memory of 2944	1352	wn2ra4ohzdr.exe	97
PID 1352 wrote to memory of 2944	1352	wn2ra4ohzdr.exe	97
PID 1352 wrote to memory of 2944	1352	wn2ra4ohzdr.exe	97

C:\Users\Admin\AppData\Local\Temp\93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42.exe
"C:\Users\Admin\AppData\Local\Temp\93ee28a5349ef6b05abf914e43b34333ca33bb24a36fcc07bec3f818fdadae42.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:692
- 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:1352
- - 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:2944

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
134KB

MD5
3d9434897e396bf8e1b5bb7c6176e845

SHA1
7790dd6bf726e8ae944e5fde3c31e84529631ed7

SHA256
1838c14ad976092465a281e1c77f6bc106a4fadc3578b168c2cf17f07030a29f

SHA512
cdffb546e89c647b0c936db051a89e38bb1d7da44cd11e5c3f95726b16569ddf300c869c8641090b5b7fdc1e1ea293cf6554e7a4282394e97c3b5fad906dfdba

Download Submit
memory/692-20-0x0000000074AC0000-0x0000000075270000-memory.dmp

Filesize
7.7MB

Download
memory/692-3-0x00000000055F0000-0x0000000005682000-memory.dmp

Filesize
584KB

Download
memory/692-5-0x0000000074AC0000-0x0000000075270000-memory.dmp

Filesize
7.7MB

Download
memory/692-4-0x00000000055C0000-0x00000000055CA000-memory.dmp

Filesize
40KB

Download
memory/692-6-0x0000000005970000-0x0000000005990000-memory.dmp

Filesize
128KB

Download
memory/692-1-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

Filesize
160KB

Download
memory/692-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/692-2-0x0000000005BA0000-0x0000000006144000-memory.dmp

Filesize
5.6MB

Download
memory/1352-33-0x0000000074AC0000-0x0000000075270000-memory.dmp

Filesize
7.7MB

Download
memory/1352-21-0x0000000074AC0000-0x0000000075270000-memory.dmp

Filesize
7.7MB

Download
memory/1352-22-0x0000000074AC0000-0x0000000075270000-memory.dmp

Filesize
7.7MB

Download
memory/1352-35-0x0000000074AC0000-0x0000000075270000-memory.dmp

Filesize
7.7MB

Download
memory/2944-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2944-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2944-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2944-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2944-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2944-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads