remcos | 3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3

General

Target

17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
Size

482KB
MD5

a909ab87dce35334159062ae7c7802ba
SHA1

d3ad69bd800d12c5080898a93c040d805bbce24c
SHA256

3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3
SHA512

4635348d4911b1963e81f299db39f77fff35e279a423ceee44d12f1f9b53469071ed6a047789da3a51cf95f9d6ed20ae45ebbfab612b1ac6297613b48919b617
SSDEEP

6144:7Tz+c6KHYBhDc1RGJdv//NkUn+N5Bkf/0TELRvIZPjbsAOZZmAX4cr8T4:7TlrYw1RUh3NFn+N5WfIQIjbs/ZmTT4

Score

10^/10

remcos idemili akpu collection credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

Idemili Akpu

C2

closen.kozow.com:2404

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-P9VOBB
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 9 IoCs

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

resource	yara_rule
behavioral2/memory/712-11-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/712-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3204-15-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4584-25-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3204-22-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3204-16-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4584-10-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4584-9-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/712-27-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4584-25-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4584-10-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4584-9-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/712-11-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/712-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/712-27-0x0000000000400000-0x0000000000478000-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-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3916 set thread context of 712	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	88
PID 3916 set thread context of 4584	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	89
PID 3916 set thread context of 3204	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	90

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	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
712	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
712	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
3204	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
3204	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
712	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
712	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3204	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 712	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	88
PID 3916 wrote to memory of 712	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	88
PID 3916 wrote to memory of 712	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	88
PID 3916 wrote to memory of 4584	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	89
PID 3916 wrote to memory of 4584	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	89
PID 3916 wrote to memory of 4584	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	89
PID 3916 wrote to memory of 3204	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	90
PID 3916 wrote to memory of 3204	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	90
PID 3916 wrote to memory of 3204	3916	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe	90

C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
"C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
  C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\avoawyw"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:712
- C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
  C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\kxtsxrhcen"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:4584
- C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe
  C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.datdecoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\urydyjreswbic"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3204

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\remcos\logs.dat

Filesize
144B

MD5
75021d9eaf3e3ec8a15b5548e1bb162d

SHA1
7b795ce9b45a57c4b68e25dac8fb5854ba11113b

SHA256
34b8d57cf54416595116ba19a1ed527430d920f55ceb73dc2b57e51b23a78afc

SHA512
dc25a47654006225a54ca8501fa32dab0dc54e5d93299109850f2f09736f21b7d02b29d10d09c53bfbf0021c6ca877d9301e009388e9d267e024316d69cc044c

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

Filesize
4KB

MD5
16f4f7c4051f4bbdaa93a1ca80690065

SHA1
750cacbdd2d089a88119374560d6ac004954e90e

SHA256
6c4559e4413cccaeab73cad48ffd804506c95566e4d6a3f5ae64017a33ea6ec2

SHA512
cb0f68d393ad03a5c802a2978ff7b12e20911bac5e27200c2df16d5d3f63dfc2387c0cd1a9075d8e4ba9ae804a6b61225575e2f42b3ef024e863d5b172417964

Download Submit
memory/712-5-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/712-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/712-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/712-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/712-27-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/3204-16-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3204-14-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3204-6-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3204-20-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/3204-22-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3204-15-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3916-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3916-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3916-34-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3916-30-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4584-25-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4584-8-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4584-9-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4584-10-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4584-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

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