remcos | 8cd895a47216b4c0e6e74ab6840a8beae3db80ef613bf8de36c39188f3f051a0

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08-09-2024 02:01

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General

Target

d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe
Size

486KB
MD5

d349344aeddcffd6bb3751a1982c4865
SHA1

965d572322839933f6ee816ac7a6ddfd54f4f3a1
SHA256

8cd895a47216b4c0e6e74ab6840a8beae3db80ef613bf8de36c39188f3f051a0
SHA512

4b52a91ff3de92dfdf768306cbc3b260ce858763f56fdeef36ab34ac8cf3261375418d2b2c32e510652cabfa03be23c92de64c43f9e43f1cfcce3f19fbdb0fb3
SSDEEP

12288:sdtogMHjAYaHRcvpP6ZJT6YashlM0JT6YashlM:+fMDPaHbb9ashlV9ashl

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

wazyremcos223.hopto.org:2420

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
dfs.exe
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
remcos_jhctjnehrmrexxu
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
sdvb
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat 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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
2512	dfs.exe
4208	dfs.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sdvb = "\"C:\\Users\\Admin\\AppData\\Roaming\\dfs.exe\""	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sdvb = "\"C:\\Users\\Admin\\AppData\\Roaming\\dfs.exe\""	dfs.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2760 set thread context of 4672	2760	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	103
PID 2512 set thread context of 4208	2512	dfs.exe	108

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 5 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	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dfs.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1088	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1088	PING.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4208	dfs.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 4672	2760	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	103
PID 2760 wrote to memory of 4672	2760	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	103
PID 2760 wrote to memory of 4672	2760	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	103
PID 2760 wrote to memory of 4672	2760	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	103
PID 2760 wrote to memory of 4672	2760	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	103
PID 2760 wrote to memory of 4672	2760	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	103
PID 2760 wrote to memory of 4672	2760	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	103
PID 2760 wrote to memory of 4672	2760	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	103
PID 2760 wrote to memory of 4672	2760	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	103
PID 4672 wrote to memory of 4948	4672	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	104
PID 4672 wrote to memory of 4948	4672	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	104
PID 4672 wrote to memory of 4948	4672	d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe	104
PID 4948 wrote to memory of 1088	4948	cmd.exe	106
PID 4948 wrote to memory of 1088	4948	cmd.exe	106
PID 4948 wrote to memory of 1088	4948	cmd.exe	106
PID 4948 wrote to memory of 2512	4948	cmd.exe	107
PID 4948 wrote to memory of 2512	4948	cmd.exe	107
PID 4948 wrote to memory of 2512	4948	cmd.exe	107
PID 2512 wrote to memory of 4208	2512	dfs.exe	108
PID 2512 wrote to memory of 4208	2512	dfs.exe	108
PID 2512 wrote to memory of 4208	2512	dfs.exe	108
PID 2512 wrote to memory of 4208	2512	dfs.exe	108
PID 2512 wrote to memory of 4208	2512	dfs.exe	108
PID 2512 wrote to memory of 4208	2512	dfs.exe	108
PID 2512 wrote to memory of 4208	2512	dfs.exe	108
PID 2512 wrote to memory of 4208	2512	dfs.exe	108
PID 2512 wrote to memory of 4208	2512	dfs.exe	108

C:\Users\Admin\AppData\Local\Temp\d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Users\Admin\AppData\Local\Temp\d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d349344aeddcffd6bb3751a1982c4865_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4672
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4948
  - - C:\Windows\SysWOW64\PING.EXE
      PING 127.0.0.1 -n 2
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:1088
  - - C:\Users\Admin\AppData\Roaming\dfs.exe
      "C:\Users\Admin\AppData\Roaming\dfs.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2512
    - - C:\Users\Admin\AppData\Roaming\dfs.exe
        
        "C:\Users\Admin\AppData\Roaming\dfs.exe"
        5⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of SetWindowsHookEx
        
        PID:4208

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3740,i,10369132178352108590,11047993562598554317,262144 --variations-seed-version --mojo-platform-channel-handle=4228 /prefetch:8
1⤵
PID:4272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.bat

Filesize
89B

MD5
ab3c3d91010c57e8c879591188929f32

SHA1
4b50e9d2e2d37a8cc5017452b8714ba90f5e3406

SHA256
07558212a32d8c3eb099c22d1b294667032b3043c6666ad80e77a27782f18ef1

SHA512
4327ec06ba856497622b1629c26036dad54ae60a79ffd7b3c376698616d447e6237f39bf6e30ca7d04d6e7035d2e86362ce2357ccbb83dfd316af0e533b43348

Download Submit
C:\Users\Admin\AppData\Roaming\dfs.exe

Filesize
486KB

MD5
d349344aeddcffd6bb3751a1982c4865

SHA1
965d572322839933f6ee816ac7a6ddfd54f4f3a1

SHA256
8cd895a47216b4c0e6e74ab6840a8beae3db80ef613bf8de36c39188f3f051a0

SHA512
4b52a91ff3de92dfdf768306cbc3b260ce858763f56fdeef36ab34ac8cf3261375418d2b2c32e510652cabfa03be23c92de64c43f9e43f1cfcce3f19fbdb0fb3

Download Submit
memory/2512-29-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/2512-28-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/2760-10-0x0000000074930000-0x00000000750E0000-memory.dmp

Filesize
7.7MB

Download
memory/2760-4-0x0000000005700000-0x0000000005756000-memory.dmp

Filesize
344KB

Download
memory/2760-6-0x0000000074930000-0x00000000750E0000-memory.dmp

Filesize
7.7MB

Download
memory/2760-7-0x0000000005AB0000-0x0000000005B4C000-memory.dmp

Filesize
624KB

Download
memory/2760-8-0x0000000005A70000-0x0000000005A82000-memory.dmp

Filesize
72KB

Download
memory/2760-9-0x000000007493E000-0x000000007493F000-memory.dmp

Filesize
4KB

Download
memory/2760-0-0x000000007493E000-0x000000007493F000-memory.dmp

Filesize
4KB

Download
memory/2760-11-0x0000000006D90000-0x0000000006DD2000-memory.dmp

Filesize
264KB

Download
memory/2760-1-0x0000000000C30000-0x0000000000CB0000-memory.dmp

Filesize
512KB

Download
memory/2760-2-0x0000000005B70000-0x0000000006114000-memory.dmp

Filesize
5.6MB

Download
memory/2760-3-0x0000000005660000-0x00000000056F2000-memory.dmp

Filesize
584KB

Download
memory/2760-20-0x0000000074930000-0x00000000750E0000-memory.dmp

Filesize
7.7MB

Download
memory/2760-5-0x0000000005860000-0x000000000586A000-memory.dmp

Filesize
40KB

Download
memory/4208-34-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-19-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-15-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4672-12-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads