remcos | 3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3

General

Target

3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.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/5040-9-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4060-21-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/5040-18-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4060-15-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1872-14-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4060-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/5040-11-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1872-8-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1872-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/5040-9-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/5040-18-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/5040-11-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1872-14-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1872-8-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1872-26-0x0000000000400000-0x0000000000478000-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-1-5-21-355097885-2402257403-2971294179-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 728 set thread context of 1872	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	87
PID 728 set thread context of 5040	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	88
PID 728 set thread context of 4060	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	89

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	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4060	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
4060	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
1872	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
1872	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
1872	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
1872	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4060	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 728 wrote to memory of 1872	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	87
PID 728 wrote to memory of 1872	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	87
PID 728 wrote to memory of 1872	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	87
PID 728 wrote to memory of 5040	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	88
PID 728 wrote to memory of 5040	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	88
PID 728 wrote to memory of 5040	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	88
PID 728 wrote to memory of 4060	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	89
PID 728 wrote to memory of 4060	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	89
PID 728 wrote to memory of 4060	728	3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe	89

C:\Users\Admin\AppData\Local\Temp\3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
"C:\Users\Admin\AppData\Local\Temp\3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:728
- C:\Users\Admin\AppData\Local\Temp\3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
  C:\Users\Admin\AppData\Local\Temp\3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe /stext "C:\Users\Admin\AppData\Local\Temp\cduwmlniqvkudtjh"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1872
- C:\Users\Admin\AppData\Local\Temp\3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
  C:\Users\Admin\AppData\Local\Temp\3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe /stext "C:\Users\Admin\AppData\Local\Temp\mgaoneyjedcynzflzum"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:5040
- C:\Users\Admin\AppData\Local\Temp\3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe
  C:\Users\Admin\AppData\Local\Temp\3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3.exe /stext "C:\Users\Admin\AppData\Local\Temp\oafhowrdaludqotpifzghh"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4060

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
2de00d9cf6750e8c30f1446436a5fc35

SHA1
78af3bcfb37d191b4df83fe7cdc1302d111be399

SHA256
e040347a3d51a11e9adbfbefaba74bb09e89224115969a31a7a08f0a3105eab2

SHA512
52ff7f6f104ca79fc6b2d69eb45414d91dafa9e19d91e56f7612586a5cb9356049f9ceff3db2687cd9c0f62c958c1bb8141c262540a6fe53a7cacd3a557c3751

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

Filesize
4KB

MD5
a7e181f6aa185be0ab0ca68b30406fe6

SHA1
58c86162658dc609615b8b6400f85c92506dfdc8

SHA256
c3071dc55b94db225d9c0f2c1b21c7e8f27dbfd168b85b7d618d8d19950e7ff2

SHA512
49969eb10e0bf7925940eb7374451f811658ef9ccfb83b86fb337c4d06c3ba17eb0181f598d9e0ec9ca25bfaf644209ac47b73d62ac924e73d03a4dcf8f8dd0f

Download Submit
memory/728-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/728-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/728-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/728-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/728-34-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/728-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/728-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1872-8-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1872-4-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1872-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1872-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1872-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4060-21-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4060-12-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4060-6-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4060-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4060-15-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4060-19-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/5040-7-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5040-18-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5040-9-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5040-11-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/5040-3-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

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