remcos | 847f0f5e71d536638fbd6c3141b0508c9f3ae1e1e4e9619ebc4e65b627a7c5d4

General

Target

0125adef6e9eed738ebac6e35c21c5ea.exe
Size

482KB
MD5

0125adef6e9eed738ebac6e35c21c5ea
SHA1

ea37d0d7f4b5f9d8577ade5c1a2f9c6558c2ca2d
SHA256

847f0f5e71d536638fbd6c3141b0508c9f3ae1e1e4e9619ebc4e65b627a7c5d4
SHA512

49e6134cf459de8c9a778a511b03bd514b222c9c98849ffb1dffd315911eb095677ae4787132ec32a7cdaafffb68d44696ee2db55348c3c106b90a5a507549f7
SSDEEP

6144:STz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZBAXccrnT4:STlrYw1RUh3NFn+N5WfIQIjbs/ZBsT4

Score

10^/10

remcos volcanic eruption collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

VOLCANIC ERUPTION

C2

127.0.0.1:1282

www.naichihardware.com:1282

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
media
mouse_option
false
mutex
Rmc-N7BV4S
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/3752-10-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1760-16-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1380-22-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1380-15-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3752-13-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1380-12-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1760-23-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3752-33-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1760-16-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1760-23-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3752-10-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3752-13-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3752-33-0x0000000000400000-0x0000000000478000-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	0125adef6e9eed738ebac6e35c21c5ea.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2884 set thread context of 3752	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	99
PID 2884 set thread context of 1760	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	100
PID 2884 set thread context of 1380	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	101

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	0125adef6e9eed738ebac6e35c21c5ea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0125adef6e9eed738ebac6e35c21c5ea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0125adef6e9eed738ebac6e35c21c5ea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0125adef6e9eed738ebac6e35c21c5ea.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3752	0125adef6e9eed738ebac6e35c21c5ea.exe
3752	0125adef6e9eed738ebac6e35c21c5ea.exe
1380	0125adef6e9eed738ebac6e35c21c5ea.exe
1380	0125adef6e9eed738ebac6e35c21c5ea.exe
3752	0125adef6e9eed738ebac6e35c21c5ea.exe
3752	0125adef6e9eed738ebac6e35c21c5ea.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2884	0125adef6e9eed738ebac6e35c21c5ea.exe
2884	0125adef6e9eed738ebac6e35c21c5ea.exe
2884	0125adef6e9eed738ebac6e35c21c5ea.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1380	0125adef6e9eed738ebac6e35c21c5ea.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2884	0125adef6e9eed738ebac6e35c21c5ea.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 3752	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	99
PID 2884 wrote to memory of 3752	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	99
PID 2884 wrote to memory of 3752	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	99
PID 2884 wrote to memory of 1760	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	100
PID 2884 wrote to memory of 1760	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	100
PID 2884 wrote to memory of 1760	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	100
PID 2884 wrote to memory of 1380	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	101
PID 2884 wrote to memory of 1380	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	101
PID 2884 wrote to memory of 1380	2884	0125adef6e9eed738ebac6e35c21c5ea.exe	101

C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe
"C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe
  C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe /stext "C:\Users\Admin\AppData\Local\Temp\abgbzjjmidqeqam"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3752
- C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe
  C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe /stext "C:\Users\Admin\AppData\Local\Temp\dwluzbtgwlijtoazft"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:1760
- C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe
  C:\Users\Admin\AppData\Local\Temp\0125adef6e9eed738ebac6e35c21c5ea.exe /stext "C:\Users\Admin\AppData\Local\Temp\nqrmauehkuawduwdodundc"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1380

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=4400,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=4236 /prefetch:8
1⤵
PID:3896

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:\ProgramData\media\logs.dat

Filesize
144B

MD5
a10b2f3880489279bf94649557bc904c

SHA1
57b978b2e674959f739cf8fafee6cfabf6894db0

SHA256
1c9219ec6658d8e0c62ad6bf51d7d8bc6f66c9329d2c10b97ad7b4ba10b11995

SHA512
d0cbbacc99b1b799ec5134b52bca170a9b6c896c3f7cf044d9a27e85db79c2c1a373f2adbeb7ef210712d7cfdeb53b443b2c922c8bf7cf1830b18fd514f08ecc

Download Submit
C:\Users\Admin\AppData\Local\Temp\abgbzjjmidqeqam

Filesize
4KB

MD5
cda83eba5a004554ccdc061fd3df499c

SHA1
58ff2ecb9d47be10335e104896c87c62dc328523

SHA256
e384f4d46587646c6e0f9d2ee90b7bc57b49cea936b37cf8ab81ef3c4ce468ac

SHA512
f55ce20f0cf8b603fad765b889607f967c22d377fa4ac417ba1309d0aced9231e197bb4107d1c92bb99f51c04cc68ce26148727a8b694886710100c01f3de597

Download Submit
memory/1380-12-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1380-17-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/1380-22-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1380-15-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1380-11-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1380-6-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1760-16-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1760-14-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1760-4-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1760-8-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1760-23-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2884-40-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2884-36-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2884-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2884-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2884-39-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2884-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2884-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3752-5-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3752-33-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3752-13-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3752-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3752-10-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

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