remcos | f0dd72c45946626cebbce21d47e79ba0cd8f15cf57cb5ae61d6ebdcb0b272ade

General

Target

17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
Size

482KB
MD5

e2a64a500166ee8b4c1261d3cecb89a4
SHA1

6f8694b271b2deba10c03fc7037eb02bf72bdf1a
SHA256

f0dd72c45946626cebbce21d47e79ba0cd8f15cf57cb5ae61d6ebdcb0b272ade
SHA512

32a7d868dfd2322d5508ec3fcc5dbc7945dacb379b7bc3bd9ec1a27323be893db9f04558b9710a16c8728527da5a94295ecca39fd68c8546a10b968b2add1e24
SSDEEP

12288:N13ak/mBXTG4/1v08KI7ZnMEF76JqmsvZQPS:Hak/mBXTV/R0nEF76gFZE

Score

10^/10

remcos zyn5 collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

zyn5

C2

sweetnessofbestthingsgivenbest.duckdns.org:14645

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-CXOW4E
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
Remcos family
remcos

Detected Nirsoft tools 8 IoCs

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

resource	yara_rule
behavioral2/memory/4028-16-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4028-25-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3452-20-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1132-14-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3452-12-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3452-8-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1132-7-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1132-27-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3452-20-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3452-12-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3452-8-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1132-14-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1132-7-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1132-27-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1412605595-2147700071-3468511006-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3296 set thread context of 1132	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	90
PID 3296 set thread context of 3452	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	91
PID 3296 set thread context of 4028	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	92

System Location Discovery: System Language Discovery 1 TTPs 4 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	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4028	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
4028	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
1132	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
1132	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
1132	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
1132	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4028	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3296 wrote to memory of 1132	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	90
PID 3296 wrote to memory of 1132	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	90
PID 3296 wrote to memory of 1132	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	90
PID 3296 wrote to memory of 3452	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	91
PID 3296 wrote to memory of 3452	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	91
PID 3296 wrote to memory of 3452	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	91
PID 3296 wrote to memory of 4028	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	92
PID 3296 wrote to memory of 4028	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	92
PID 3296 wrote to memory of 4028	3296	17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe	92

C:\Users\Admin\AppData\Local\Temp\17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3296
- C:\Users\Admin\AppData\Local\Temp\17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\ccxdngacmkcpzjt"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1132
- C:\Users\Admin\AppData\Local\Temp\17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\mwcooqkvisuubxpllv"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:3452
- C:\Users\Admin\AppData\Local\Temp\17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17388428447957df11df444c66f2aa2fc6aca96bc34e6a218b1c3044afde7b92597a4ed000836.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\pzpgpjdpwamhlddpdflqsf"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
4KB

MD5
e891266f106f82810b6f0e488a9c3009

SHA1
d5f83b092e47894866c180aaea7db3b4b0497b0a

SHA256
ad97a339bf4bb8d3da279bc966427f2815b46c82952769b64ca53bc81578df4f

SHA512
9512c397431ec8d0d5404b2a9baa89838bfe3eedced5144873167575990b12ba99295ac9f77e91d917afe4dc18223d7a0c0e21825b99bc7ed89c508db2fc3609

Download Submit
memory/1132-7-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1132-5-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1132-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1132-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1132-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3296-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3296-34-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3296-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3296-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3296-30-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3452-20-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3452-6-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3452-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3452-8-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3452-12-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4028-9-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4028-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4028-15-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4028-25-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4028-18-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/4028-16-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

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