remcos | 3ebef7667a1f5a1e43bb40f8d141ab80a1b64109c82d16a5308ea608888b38f3

General

Target

17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.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 8 IoCs

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

resource	yara_rule
behavioral2/memory/1840-16-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2788-20-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1840-17-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2548-12-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2788-9-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2548-14-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2788-13-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2548-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1840-16-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1840-17-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2548-12-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2548-14-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2548-26-0x0000000000400000-0x0000000000478000-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	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4992 set thread context of 2548	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	87
PID 4992 set thread context of 1840	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	88
PID 4992 set thread context of 2788	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.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	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2788	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
2788	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
2548	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
2548	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
2548	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
2548	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4992 wrote to memory of 2548	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	87
PID 4992 wrote to memory of 2548	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	87
PID 4992 wrote to memory of 2548	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	87
PID 4992 wrote to memory of 1840	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	88
PID 4992 wrote to memory of 1840	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	88
PID 4992 wrote to memory of 1840	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	88
PID 4992 wrote to memory of 2788	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	89
PID 4992 wrote to memory of 2788	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	89
PID 4992 wrote to memory of 2788	4992	17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe	89

C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
"C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4992
- C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\jqdozisxhusnlwjscpkalkpjgmbb"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2548
- C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\tkjgabdrdckawdxwtzwcowkspsskfmuh"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:1840
- C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe
  C:\Users\Admin\AppData\Local\Temp\17254631443eae77db10019b6b965fab82d73f71d12f87665a437c5f6e94698ca7d178f318712.dat-decoded.exe /stext "C:\Users\Admin\AppData\Local\Temp\wmwr"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2788

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
025bdda6decdef7929abbc6a77d5c2a7

SHA1
cb8e2a3e44af680cb765afc59e0597d9e8e42346

SHA256
07785604f662ac11a3412ebb60e38c5c209bdf1893f7e631ea18f5e20a2c2fb5

SHA512
7b5a49c7578a92bf842edcc513d65854c4b80a804e9c484bc11c788f3105af69034d04ee44b118c374e61a6e99fa937e3fa1b1c124a2d091d71d19afd86d6d1f

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

Filesize
4KB

MD5
a7e181f6aa185be0ab0ca68b30406fe6

SHA1
58c86162658dc609615b8b6400f85c92506dfdc8

SHA256
c3071dc55b94db225d9c0f2c1b21c7e8f27dbfd168b85b7d618d8d19950e7ff2

SHA512
49969eb10e0bf7925940eb7374451f811658ef9ccfb83b86fb337c4d06c3ba17eb0181f598d9e0ec9ca25bfaf644209ac47b73d62ac924e73d03a4dcf8f8dd0f

Download Submit
memory/1840-15-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1840-16-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1840-17-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1840-11-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1840-4-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2548-14-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2548-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2548-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2548-12-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2548-6-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2788-20-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2788-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2788-9-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2788-18-0x0000000000430000-0x00000000004F9000-memory.dmp

Filesize
804KB

Download
memory/2788-8-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2788-5-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4992-33-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4992-32-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4992-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4992-29-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4992-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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