remcos | 6283c33ea65fdcb9a942dcbc1ce5df6d64676413accf26a58a0c625546313aa7

General

Target

17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.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/4620-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/5208-19-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/5208-17-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/5208-16-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/5200-15-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4620-14-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/5200-11-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4620-31-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/5208-19-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/5208-17-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/5208-16-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4620-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4620-14-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4620-31-0x0000000000400000-0x0000000000478000-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	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 5044 set thread context of 4620	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	98
PID 5044 set thread context of 5208	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	99
PID 5044 set thread context of 5200	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.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	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5200	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
5200	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
4620	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
4620	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
4620	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
4620	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5200	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5044 wrote to memory of 4620	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	98
PID 5044 wrote to memory of 4620	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	98
PID 5044 wrote to memory of 4620	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	98
PID 5044 wrote to memory of 5208	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	99
PID 5044 wrote to memory of 5208	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	99
PID 5044 wrote to memory of 5208	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	99
PID 5044 wrote to memory of 5200	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	100
PID 5044 wrote to memory of 5200	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	100
PID 5044 wrote to memory of 5200	5044	17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe	100

C:\Users\Admin\AppData\Local\Temp\17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5044
- C:\Users\Admin\AppData\Local\Temp\17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\qtxnjcuvnzzbmlfprzxm"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4620
- C:\Users\Admin\AppData\Local\Temp\17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\bvcxkuexbhrgwsbtbkjflma"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:5208
- C:\Users\Admin\AppData\Local\Temp\17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17261703069c45cd5df6e466e8c31f5e537b970dac3208cc7fdb309f35d75c43863801dd57521.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\lqpqlnpqwpjlygpxkvehozupsqz"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5200

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=3820,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=4384 /prefetch:8
1⤵
PID:4848

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\qtxnjcuvnzzbmlfprzxm

Filesize
4KB

MD5
cda83eba5a004554ccdc061fd3df499c

SHA1
58ff2ecb9d47be10335e104896c87c62dc328523

SHA256
e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

SHA512
f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

Download Submit
memory/4620-5-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4620-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4620-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4620-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4620-31-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/5044-38-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/5044-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5044-37-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/5044-34-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/5044-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5200-15-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5200-10-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5200-8-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5200-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5208-16-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5208-6-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5208-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5208-17-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5208-19-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

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