remcos | 6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7

General

Target

6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
Size

483KB
MD5

fac1e01c499f5c75618351a8b1817899
SHA1

bcf16a474b653e859f53d813e4ea9409a921f4ac
SHA256

6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7
SHA512

57549f9fcd5a4a5b38e9a798439850fe6742c88c8475714cf35680dca8207191ebf961ba12568cdf7b3ae2c70bcf5dc19c7f66c00555a5d1f2c06adbad945315
SSDEEP

6144:QTz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccrIT4:QTlrYw1RUh3NFn+N5WfIQIjbs/ZBfT4

Score

10^/10

remcos zynova collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

zynova

C2

fishrmcupdate.duckdns.org:14645

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-VZ0MX9
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 8 IoCs

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

resource	yara_rule
behavioral2/memory/704-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3764-16-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1172-20-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3764-18-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/704-14-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1172-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1172-10-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/704-32-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3764-16-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/3764-18-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/704-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/704-14-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/704-32-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3948 set thread context of 704	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	98
PID 3948 set thread context of 3764	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	99
PID 3948 set thread context of 1172	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	100

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	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1172	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
1172	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
704	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
704	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
704	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
704	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1172	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3948 wrote to memory of 704	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	98
PID 3948 wrote to memory of 704	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	98
PID 3948 wrote to memory of 704	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	98
PID 3948 wrote to memory of 3764	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	99
PID 3948 wrote to memory of 3764	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	99
PID 3948 wrote to memory of 3764	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	99
PID 3948 wrote to memory of 1172	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	100
PID 3948 wrote to memory of 1172	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	100
PID 3948 wrote to memory of 1172	3948	6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe	100

C:\Users\Admin\AppData\Local\Temp\6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
"C:\Users\Admin\AppData\Local\Temp\6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Users\Admin\AppData\Local\Temp\6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
  C:\Users\Admin\AppData\Local\Temp\6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe /stext "C:\Users\Admin\AppData\Local\Temp\pizwkuufdxpdbfhkqtvyeqnz"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:704
- C:\Users\Admin\AppData\Local\Temp\6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
  C:\Users\Admin\AppData\Local\Temp\6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe /stext "C:\Users\Admin\AppData\Local\Temp\acfplmfgrfhqlmeoaeqapdiinuj"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:3764
- C:\Users\Admin\AppData\Local\Temp\6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe
  C:\Users\Admin\AppData\Local\Temp\6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7.exe /stext "C:\Users\Admin\AppData\Local\Temp\cekamfpafnzvnssaroctsiczojbznw"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1172

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=4236,i,12198811467968044966,17227406646827438786,262144 --variations-seed-version --mojo-platform-channel-handle=4328 /prefetch:8
1⤵
PID:4016

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\pizwkuufdxpdbfhkqtvyeqnz

Filesize
4KB

MD5
cda83eba5a004554ccdc061fd3df499c

SHA1
58ff2ecb9d47be10335e104896c87c62dc328523

SHA256
e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

SHA512
f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

Download Submit
memory/704-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/704-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/704-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/704-9-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/704-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1172-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1172-8-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1172-6-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1172-20-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1172-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1172-17-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/3764-11-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3764-16-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3764-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3764-15-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3764-18-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3948-35-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3948-40-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3948-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3948-39-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3948-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3948-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3948-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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