remcos | e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525

Analysis

max time kernel
298s
max time network
300s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
19/09/2024, 22:46

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General

Target

e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
Size

487KB
MD5

b5e38d0b7fcf5126d3c2477004b26b48
SHA1

3a7bf3b6ea2c4fcc73e054a608cab9c4a9fd90f5
SHA256

e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525
SHA512

7812f687598ec67ceabb5db2b912e0b2b38c66683f88a63682b1cb86b795e239b5a6fad2d1ab784ad9c2ee9264e8124eb2d98772886a25ad78b7ed9156cef3f0
SSDEEP

12288:nToUWtTuFecH/EILc6DVMGaqgOW7aWczfKbPHM/CJp:TobxUfE/TGX5PUvwi

Score

10^/10

remcos remotehost collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

103.198.26.25:96

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-IPUJM4
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 7 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/3688-22-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4564-26-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4564-32-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3732-34-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4564-30-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3688-21-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3688-36-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4564-26-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4564-32-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4564-30-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3688-22-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3688-21-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3688-36-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Executes dropped EXE 1 IoCs

pid	Process
2652	bin.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2768 set thread context of 3688	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	74
PID 2768 set thread context of 4564	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	75
PID 2768 set thread context of 3732	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	76

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	bin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
3688	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
3688	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
3732	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
3732	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
3688	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
3688	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe
2652	bin.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3732	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2768 wrote to memory of 2652	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	73
PID 2768 wrote to memory of 2652	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	73
PID 2768 wrote to memory of 2652	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	73
PID 2768 wrote to memory of 3688	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	74
PID 2768 wrote to memory of 3688	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	74
PID 2768 wrote to memory of 3688	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	74
PID 2768 wrote to memory of 3688	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	74
PID 2768 wrote to memory of 4564	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	75
PID 2768 wrote to memory of 4564	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	75
PID 2768 wrote to memory of 4564	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	75
PID 2768 wrote to memory of 4564	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	75
PID 2768 wrote to memory of 3732	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	76
PID 2768 wrote to memory of 3732	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	76
PID 2768 wrote to memory of 3732	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	76
PID 2768 wrote to memory of 3732	2768	e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe	76

C:\Users\Admin\AppData\Local\Temp\e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
"C:\Users\Admin\AppData\Local\Temp\e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2768
- C:\Users\Admin\AppData\Local\Temp\bin.exe
  "C:\Users\Admin\AppData\Local\Temp\bin.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2652
- C:\Users\Admin\AppData\Local\Temp\e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
  C:\Users\Admin\AppData\Local\Temp\e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe /stext "C:\Users\Admin\AppData\Local\Temp\afjbxztjuf"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3688
- C:\Users\Admin\AppData\Local\Temp\e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
  C:\Users\Admin\AppData\Local\Temp\e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe /stext "C:\Users\Admin\AppData\Local\Temp\lipuxkecinjld"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:4564
- C:\Users\Admin\AppData\Local\Temp\e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe
  C:\Users\Admin\AppData\Local\Temp\e7f2edf19292653d9a19efd3ef7c035b7cde5dba9a9c295bfae1918a2c834525.exe /stext "C:\Users\Admin\AppData\Local\Temp\vcueycoewvbpnxvue"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\afjbxztjuf

Filesize
4KB

MD5
aeb1356a0857995e1a148e8d8d75685f

SHA1
c1fd5f37ce9b0bc8ee2d0a4dc1be836287d42501

SHA256
a3a528a52dac30a3c0bc66975a4e9dc3afab2f0addc48a4ef1f1fa8d7d17d910

SHA512
5ee99d9262e4f024ba0cebb8732f1c81eaa5b4e40081da8aa8eb17697e73d04cc7af73a0bb1887fe8f3d903ba0079cdc66996561d281e53d16bee978fa33a0c2

Download Submit
C:\Users\Admin\AppData\Local\Temp\bin.exe

Filesize
266KB

MD5
3444544db4f734b7c1010cbb5346e543

SHA1
ab526ed65cac137a57fc6eb1b568ca3ca9c752be

SHA256
68321f6f080154e08ddc81d5e54ae699d5174a82b8c8818d0af1f072536128aa

SHA512
1d2d6913d5a4bc8cef69054fb1dfcc7459aecc43ec595a0abe0dcf752f759290e5537b351d8d02ef2ca698fd7a436fb11516d746d7cb11f3eb220647de80157d

Download Submit
memory/2652-57-0x0000000000F63000-0x0000000000FA3000-memory.dmp

Filesize
256KB

Download
memory/2652-56-0x0000000000F61000-0x0000000000F64000-memory.dmp

Filesize
12KB

Download
memory/2652-50-0x0000000000F63000-0x0000000000FA3000-memory.dmp

Filesize
256KB

Download
memory/2652-47-0x0000000000F61000-0x0000000000F64000-memory.dmp

Filesize
12KB

Download
memory/2652-48-0x0000000000F63000-0x0000000000FA3000-memory.dmp

Filesize
256KB

Download
memory/2652-16-0x0000000000F61000-0x0000000000F64000-memory.dmp

Filesize
12KB

Download
memory/2768-53-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-61-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-8-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-7-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-17-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-86-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-85-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-81-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-80-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-75-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-76-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-71-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-70-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-66-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-65-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-60-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-10-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-1-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-6-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-42-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2768-43-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-41-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2768-38-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2768-44-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-45-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-46-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-5-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-4-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-49-0x0000000000590000-0x0000000000615000-memory.dmp

Filesize
532KB

Download
memory/2768-3-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-0-0x0000000000590000-0x0000000000615000-memory.dmp

Filesize
532KB

Download
memory/2768-54-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/2768-2-0x00000000006F0000-0x0000000000772000-memory.dmp

Filesize
520KB

Download
memory/3688-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3688-18-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3688-20-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3688-21-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3688-22-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3732-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3732-33-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3732-31-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4564-32-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4564-26-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4564-25-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4564-30-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4564-23-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download