remcos | 943df694d18c31eba3477271af8be3ba54e003afd623d162705bf203ef0ab6ee

General

Target

d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe
Size

868KB
MD5

d4fa2d3197da723c8030147297b9e904
SHA1

1623b9fac1f027f328a4a567fec7f9517e8a9b5b
SHA256

943df694d18c31eba3477271af8be3ba54e003afd623d162705bf203ef0ab6ee
SHA512

24649db62837626affd681f7b20fce823dacd45d6207ffb7e100d61c65385bc69eb0fd412715129e1237160a849fb8ec566ce7b760174334e85715fa10ea0911
SSDEEP

12288:d5aTUxjQBT/48bXaGJdB38Krf7zpurlZFcHTn3mOJurGrel9VroDij:d53x0BTZbBVfXpQHETn3mO4ueJHj

Score

10^/10

remcos reed discovery rat

Malware Config

Extracted

Family

remcos

Version

3.2.0 Pro

Botnet

Reed

C2

ezfax2021.home-webserver.de:24133

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
iuis.exe
copy_folder
oiujhy
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
uhyg.dat
keylog_flag
false
keylog_folder
juhg
keylog_path
%AppData%
mouse_option
false
mutex
iuyhg-XOY14N
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
oiu
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4724 set thread context of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100

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	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4792	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe
4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4536	vbc.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4724 wrote to memory of 4792	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	98
PID 4724 wrote to memory of 4792	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	98
PID 4724 wrote to memory of 4792	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	98
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100
PID 4724 wrote to memory of 4536	4724	d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe	100

C:\Users\Admin\AppData\Local\Temp\d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d4fa2d3197da723c8030147297b9e904_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\smmtJKPRG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE63.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4792
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

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\juhg\uhyg.dat

Filesize
148B

MD5
a1a68b502cbf314e65767c609ee5d92a

SHA1
6c55348e9db5c2bafb76b2ec1d65862e24cbc875

SHA256
5b3b2ce8f48768f88a37b5617601fb1258b13a8a8f83041e651fab1990ee571c

SHA512
881a406f8c25ae4e12b0bc82b19483c975f90aaa74a56c8d805e4230bcbda6272d1464db36b70d2a067a603fcc1ce39a368d2907de48fdf061dc54b40abb2332

Download Submit
memory/4536-17-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4536-30-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4536-19-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4536-20-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4536-23-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4536-24-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4536-18-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/4724-5-0x0000000004D00000-0x0000000004D0A000-memory.dmp

Filesize
40KB

Download
memory/4724-9-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/4724-10-0x0000000006870000-0x000000000691E000-memory.dmp

Filesize
696KB

Download
memory/4724-11-0x0000000006920000-0x000000000699A000-memory.dmp

Filesize
488KB

Download
memory/4724-8-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

Filesize
4KB

Download
memory/4724-7-0x0000000005260000-0x000000000526C000-memory.dmp

Filesize
48KB

Download
memory/4724-6-0x0000000006230000-0x00000000062CC000-memory.dmp

Filesize
624KB

Download
memory/4724-0-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

Filesize
4KB

Download
memory/4724-4-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/4724-3-0x0000000004D60000-0x0000000004DF2000-memory.dmp

Filesize
584KB

Download
memory/4724-26-0x0000000074CA0000-0x0000000075450000-memory.dmp

Filesize
7.7MB

Download
memory/4724-2-0x0000000005270000-0x0000000005814000-memory.dmp

Filesize
5.6MB

Download
memory/4724-1-0x0000000000270000-0x000000000034E000-memory.dmp

Filesize
888KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads